Dadson Racing: 2010 Revival
Posted 03 July 2010 - 11:42 AM
Posted 03 July 2010 - 01:30 PM
Posted 03 July 2010 - 01:40 PM
I dont know about legallity on the road, but on a race car this might be a solution? Try your local nut and bolt place for the rosejoints and long nuts, I brought some nut's the same only shorter for mine. you might need special tapered bolts between the rosejoint and the steering arm, they use them in openwheelers, clubmans, sprintcars, speedway stuff a lot. You can dial out some bumpsteer with setup as well. I've had the photo's awhile, sorry if they were yours...
I wanted to do exactly that mod, but I still have standard shocks and just didn't think that a rose joint would provide enough range of motion to not bind up. The engineer had the same thoughts so that's why I am persuing this other, much more difficult, route.
RB30x, the thermo switches come with a small, thin, square of rubber with a groove for the copper wire. The rubber sits between the wire and the radiator with the wire in the groove and the radiator hose seals around that, providing the seal.
It can take a try or two to get a good seal, so if you do get a thermo switch make sure you run the motor and check for leaks before driving off.
Posted 03 July 2010 - 04:18 PM
Posted 03 July 2010 - 04:41 PM
The bit I used with the copper wire was just a really thin (like 1-2mm) bit of some rubber tube I found lying around somewhere. Use a stanley knife to put a little groove in it for the copper wire and bob's your uncle. Just make sure the bit of rubber is really thin, otherwise you'll get leaks around the edge of the rubber square even tho it'll seal on the copper wire.
Posted 18 July 2010 - 07:01 PM
Well I got back from work last week and flew out on holiday the next day, but I arrived last night and got stuck into the car today before flying out again this week. Wow, this is getting hectic!
Today I took a look at making up a bug/stone guard for the radiator as I talked about last update and also had a crack at the headlight covers I bought 4 months ago. I’m not slow at things, honest….
Here is the radiator guard, simply some aluminium fly screen wire to keep the soft aluminium of the radiator safe. Believe me, you need something like this with the ally radiators! I folded the top underneath the rubber that seals the bonnet and down the bottom I simply used some zip-ties. A nice and simple mod that should be very effective.
And then after 2 hours to fit the driver’s side, and 10 minutes to fit the passenger side, the new headlight covers in all their glory with the new bug guard making a cameo appearance:
And how it should all look when the front wheels are back on the ground:
Tomorrow the car gets the tie-rods fitted after being picked up from the electroplater’s and then she’ll be driving again =D =D =D
Keep posted for the tie-rod upgrade, I’ll shortly post plenty of pics and part numbers to replicate the mod. I can confirm now that the mod works with the standard 14” rims, even with roll centre adjusters, and doesn’t bind over the full range of motion of the standard suspension!!
Posted 20 July 2010 - 08:44 PM
Well, HUGE success with the tie-rods today! I made a new thread over here:
That details the whole procedure. In short, it works a treat and fits with standard suspension AND wheels, even with TTT Roll Centre Adjusters. Here are a couple pics showing the final product.
Old vs new:
On the car:
Massive thanks to Dad for following this mod through after I had given up on it and was convinced it couldn’t be done!
Posted 21 July 2010 - 01:51 AM
I may have missed it but your 260Z is normal road registered?
Also have to ask and fingers crossed, did you get your headlight covers locally by any chance?
Posted 21 July 2010 - 09:15 AM
thanks for the encouragement! Nice to see another Perth boy on the forum. I rarely drive the car on the road, mostly to and from events and the odd Sunday but it does still have normal registration, yes.
The headlight covers i purchased from warren at AllZparts in Sydney. They were 120 or 140 and then add probably another 20 to ship them. I'm not sure how that compares to ordering from the states but i was at his shop and it was much easier to just pick them up than order stuff from America for the minimal difference.
I don't have his number on hand but if you call him he'll be able to help you out.
Posted 31 July 2010 - 11:13 PM
Well I'm offshore again and whilst this would normally mean no progress on a car build, Dad has been leading the charge!
Dad picked up a new battery and a 70amp 300zx alternator during the week to finally hit the stupid flattening battery on the head! Soo sick of batteries going flat on me!
The tacho stopped working and in typical fashion I get an email AFTER the dash has been pulled out telling me that the dash does NOT in fact have to come out to remove the alternator... I had a bit of a chuckle Turns out there was nothing wrong with the tacho tho, I suppose that is a good thing, but a bit strange.
While the dash was out tho Dad thought it would be a good idea to finally fit the second stage rev limiter from the MSD as a launch controller. A bit of soul later, literally shoe sole, this was rigged:
The MSD takes a 12v signal, triggered from the brake light switch on the clutch pedal, and engages a second rev limiter. In this case it's 4000rpm and Launch control!!! This could save some serious times at hill climbs because it will mean that I won't have to worry about balancing revs and throttle as well as handbrake and the timing light, just have to literally sidestep the clutch at the green light and be off.
Just to make things sensible, it also has a kill switch mounted in an empty spot on the centre console so that it can be disabled for on the track so that it doesn't affect ability to double clutch down changes properly:
This amazing little contraption should also mean it's possible to flat change at the drags without risk of over-revving the engine! I'll have a crack when I get home next week but I'm told that the car sounds pretty awesome banging on the limiter at 4k, imagine that, Launch Control in a 33 year old car!!
It was also my birthday yesterday and because I’m stuck offshore feeling sorry for myself I indulged in some retail therapy. I have these two little baby’s on the way from the states
I also ordered the Alcantara for the interior on Tuesday in solid black which is on its way from Germany as I type this so I’m hoping the suede steering wheel will tie the dash into the Alcantara trim that will be débuting in a zed for perhaps the first time in Australia! (Can anyone quantify that?!) I also got a lead on getting spray-on suede for the plastic panels in the hatch area. Still undecided on the dash, but I don’t want to over-do the whole suede thing so I’ll probably leave the dash and the centre console as they are, with maybe just a suede gear boot and gear lever cover.
Tomorrow is the first event since EASTER for the car, Dad is competing in the Regularity at Wanneroo Raceway in Perth. It's also the first event with the new suspension and radiator. Dad had a shakedown day yesterday at the track and the previous owner, who now has a 351 GT Falcon rekons the car is doing sub 70 second laps and given this guys experience at the track I have no reason to doubt him. Dad had nothing but amazing things to say about the new suspension setup right until he plowed it into the dirt at about 100kph…. He didn’t damage anything and I’m glad to hear that good sense and driving prevailed so he just went in in a straight line to avoid rolling the car after pushing too hard coming down the back straight into the last corner. I have heard from him that there is sand EVERYWHERE in the car tho and that it has taken most of the day just to clean it out.
So, I'm really hoping for good things during timed runs tomorrow at the event! Our current PB at the track is 71.7s, the same for the both of us. If we can take 2 seconds off just in suspension that would be mind blowing! I'll keep you all posted with the results, but if a little over $1500 can have a 2s reduction in lap times I would recommend the suspension mods to everyone.
Posted 01 August 2010 - 09:36 AM
Posted 01 August 2010 - 11:30 AM
No, this is poor man's "Launch Control". It probably shouldn't really be termed that at all, I just think it sounds cool
The MSD simply engages the second stage rev limit when it receives a 12v signal on a secondary wire. In this case we have wired it up to the clutch so that when the clutch is depressed, the limit is 4000 rpm and when the clutch is released it stops the 12v signal and the MSD reverts back to the original 7000 rpm limit. It will basically just be used so that when you launch at the drags/hill climbs that you don't have to use the throttle to control the revs, you can just hold the throttle at the percentage open that you want to get the best launch and the MSD will keep the motor at whatever rpm you set it at. I find that having to 'mash' the throttle off the line can cause severe wheelspin if not done properly and is a bit hit-and-miss. The snapped moustache bar will testify to what happens without enough revs at the drags and the outcome of axle tramp, this just makes it a bit easier to get off the line consistently.
I'll adjust the rev limit until I get the best launches but I suspect holding the throttle at around 50% with around 3500-3700rpm limiter will give great results.
Unfortunatly, there is no wheel sensor to limit rpm or any fancy electronics, just simply an on-off switch.
Posted 09 August 2010 - 10:31 PM
It’s been a while, but I’m back! Back in town that is, and no mucking around here!
To follow up on last week’s update, Dad made it to the track on the Sunday and got some times…. In the midst of all the excitement, a few things happened. In qualifying he was caught up in traffic and posted a 72.8s lap, very good. Following the event tho, Dad thought “Hmm 7k rev limit seems high, don’t think it’s supposed to be there…” and so adjusted it down to 6500rpm. Out for the second run and he thinks to himself “Hmm, rev cut seems early, oh well, keep going”, he comes in and lo-and-behold, the rev limit has been set to 5500rpm, not 6500rpm, and yet he STILL did a 71.8s lap, equal to his PB!! Talk about good suspension upgrade. Unfortunately the day didn’t get any better and on run number 2, the second stage rev cut played up and the car wouldn’t rev at all above idle and so Dad missed the event and then on the last event of the day he hadn’t changed the tyre pressures and yet the track was 20 degrees hotter so say hello to marshmallow tyres! Following the rev cut mishap Dad circulated at 71.8’s all day. Either way, an equal PB lap with a 5500rpm rev cut instead of 7000rpm and a loss of around 30 useable horse power, bring on super quick laps when the rebuild is finished!
Getting in to the swing of things after returning home from work, I dropped the car off at Osborne Park Service Centre today for them to pull the motor and give it a freshen-up. I wasn’t going to touch the motor other than deglaze the bore and new rings and bearings, but Tus rekons with all the advance the car is currently running that it means some more compression HAS to be on the list, plus a few other things, he thinks a 30hp gain is not unbelievable, how can I argue with that…. So much for leaving the motor alone, but hey, who’s complaining =D
Also went to the panel beater today and it looks like the car will be in his workshop in 4 weeks or so. In that time I have to fully strip it, clean it and get it sand blasted. I know right, I said “clean” the car before sand blasting, well, check out ‘rust proofing’ a car in England in the 70’s:
That, if you haven’t worked it out yet, is grease… It’s not pretty and it’s going to be a prick to remove, but hey, no rust! If anyone has any ideas on getting rid of the grease behind the suspension towers there we’re I can’t get in to, please fire away!!
To top off a few weeks hard work researching I went out today and bought a few things after working out what will and won’t fit on a zed. I started with a trip to rare spares and picked up some vents for the new guards that are coming from Alfa Fibreglass (If anyone has experience with them, please PM me, I’d like to know how much work I’m up for with new fiberglass panels, bonnet and hatch). Here is a pic of the vents on the car I salvaged them from:
Well I didn’t salvage them from THIS car, but they are off a HK Holden. They are 4 vents and will fit perfectly on the guard on the zed and being period correct is nice. I was thinking about getting some VE HSV vents/indicators but at $1000 a pair I was a bit reluctant! Now, just to work out how to fix a steel plate to a fiberglass panel…. Again, if you have ideas, thoughts are more than welcome!
While trying to nut that one out I also worked out which seats will fit in the zed without fouling on the door, the roll cage and will sit central in the cockpit! They would be the Sparco Sprint V, unfortunately, they are as uncomfortable as hell so I picked these up instead:
They are the Sparco Ultra (Tec) and are discontinued, but I found a store with a couple in stock so picked them up. The issue with these is that you sit higher than the seat I have, about 2 inches, so a head with a helmet on won’t clear the roof and the roll cage unless it’s solid mounted, but I guess that’s the price to pay to fit a seat central to the steering wheel in a zed with a roll cage. I’m not sure on the weight of the standard seat but the Momo currently acting as the drivers seat weighs 6kg and the new seats weight 7kg each, likely around 10kg less than the standard seat, for a weight saving of about 9kg total. For reference here is a pic of the new seats next to the Momo Rookie that it is replacing.
That is it for today. The car comes back on a truck on Wednesday and then I have the daunting task of pulling it to bits, cleaning it and sending it to the sand-blasters to get the shell of the car blasted and the remaining body panels soda blasted. Keep posted.
Posted 09 August 2010 - 10:42 PM
Posted 10 August 2010 - 11:33 AM
There are certainly plenty of reasons to get them, They are FIA approved, fire resistant material, fairly light, bottom and side mount, fairly wide in the bum room. The issue I had with them was that they are a tube frame construction. Now, it's not that it's made of steel that was a bad thing but that the seat base is sprung, not solid and so you find yourself sitting VERY low and then they have this big cushion right under your legs. That big cushion covers a steel bar and I can imagine that as the seat wears out, that cushion will expose the hard steel bar which would be very uncomfortable. I also didn't like the way my legs sat up on that cushion. Instead of having a solid base under your legs you sit on the sprung part of the seat on the back of your bum and then are unsupported until your legs are on that cushion, and considering the weight on that point load on your bum and your legs I could imagine on long trips that it would cut circulation and hurt.
Also, given how far away the peddles are in the zed and how close the steering wheel is, the fact that the seat forces you to have a large bend in your legs would mean sitting uncomfortably close to the steering wheel.
At the end of the day comfort is a personal preference and you need to find a store and just sit in a heap of seats, which is how I came to this conclusion. At the end of the day I was happy to spend another $200 a seat to get something more supportive and comfortable for when I do need to be in the car for long periods of time.
Posted 17 August 2010 - 11:13 PM
Wow, a busy few days! I can now sympathise with people who do not update their blogs for weeks and months at a time, if you’re busy working on cars it makes it hard to keep updates coming, lucky for me I’ve got tonight off so I can write up a bit of a post for you guys. I think I should start with a disclaimer: This will be one LONG post and apologies in advance for the 10,000 photos ahead.
After picking up seats on Monday I had a couple days off before the car returned to me on Wednesday minus 1 motor and so on Thursday I got started on striping the car. Along the way I took around 180 photos of things so that I know how it all goes back together! Even with all the photos I think it is still going to be one daunting task that I’m not particularly looking forward to going through. It will be worth it, don’t get me wrong, but it’s going to be a long way from pleasant.
I mentioned last update about the grease in the car, well it turns out to be even more ‘everywhere’ than I previously suspected and I’ve decided I don’t really want to do it! I did the ring around and found a guy who is willing to steam clean the car and rekons he can do it in 3-4 hours, did I launch at that offer or what. Just to show you guys what he’s up for check out the grease in the rear quarter panels again:
That is all the way through EVERY panel in the car! Don’t believe me, have a little look, a good look, at these pics and the hidden gold in the background:
I told you all that 100kg would be a walk in the park! It was pretty amazing actually watching the car transform from a low, sleek race car to ‘tank spec’ during the time I worked on it. I reckon the car has risen about 4 inches since I started just due to pulling the weight out of the car, it was awesome to watch transform! The doors, bonnet and guards had the biggest impact of course, but everything adds up for sure.
After a stressful day on Thursday the day was coming to an end and I had to admire what I’d done and also found some time for a little art work:
None too shabby for just a screw and a point and shoot camera.
I had a couple of surprise deliveries on Friday: My 8m roll of Alcantara in black and my new Momo, Suede covered steering wheel, but by far the most exciting was 4 boxes from Otomoto in Sydney. I ordered them on Tuesday afternoon and they were in Perth, at my door, by lunch time Friday, talk about amazing service from TNT. Sorry Otomoto, but shipping anything by truck across the country in 48 hours is still more impressive than having them ready for delivery 1 hour after payment is made, if not by much. But enough suspense, the pics we’ve all been waiting for:
Awesome! Of course I had to take a couple of clearance shots whilst I was at it. The fronts clear by a significant amount to the struts, which was rather surprising. Please remember that I have the commodore brakes and the rotors have more negative offset than standard brakes (out from the centre of the car, or away from the suspension to make it clear), so these pics won’t be representative of standard discs even tho I am still running standard suspension. I suspect it will JUST clear with standard brakes otherwise you would likely need a 3-5mm spacer to get things to fit.
I did some jiggling around and measured 5 1/12th inches of backspace (12.91cm)from the mounting face of my rotors, so that would explain why the 8 inch rims fit so well (8” rims with a +4 offest = 10.56cm back space, but the outer edge of the rim sits a bit further in than the tyre mounting face), clearance is around 8-10mm to the strut and I’m not suspecting any surprises when I put some 225 tyres on the rims. The outside edge of the rim on the other hand, that will need some adjustment:
With the suspension at full droop on a jack you’re looking at a rim that sticks out about 15mm past the guard. Even tho the rim will come inwards as the suspension slack is taken up a good roll will be required to fit these under without rubbing. The guards don’t need flaring, but I suspect more than just a normal roll and more like a ‘buff’ of the guards will be required, however, it should still keep the good looking lines of the car without spoiling anything like a flare does in my opinion. I have a suspicion that the guard in this photo has actually been pushed IN at some stage of its life because the guard on the passenger side of the car has more clearance than it even tho I haven’t rolled anything on the car.
Of course, nothing like so much of an issue on the rear, the struts clear by miles
As well as not causing any issue with the suspension at all
Although perhaps that is not really all that surprising considering I still used to run standard 14” rims on the street. With 17 wheels for the car now however, it’s time to work out what to keep and what to sell and I think the standard rims will find a new home given all the options that I have. Perhaps someone rebuilding/owning an original 260 might be interested in them to complement their otherwise complete car. Whilst not completely correct, these would also go great with an original 240z.
I’m just looking back now and regretting now not getting a pic of the clearance to the guards on the back, but I suspect it’ll be a better fit than the front, which is rather good, so no need to worry.
All in all, stripping the car was a rather rewarding experience, I finally feel like I know something about these cars that I didn’t before, especially the fact of how simple these cars are! I swear, a 10mm socket, a medium blade and Philips screw driver will have 90% of the car apart!
It was a trying exercise but I managed to fully strip the car in 4 days, so I was impressed with that given the amount of time I spent doing other things. My camera went flat on Sunday but I took this photo on Saturday night and you can see the progress I made in 3 days
Of course the experience wasn’t without it’s trials, I have found more rust than I was suspecting, including some at the back of the passenger frame rails that looks like it’s been patched badly in the past and a HUGE amount of surface rust in the drivers floor due to 3 years of a leaking door I could never track down to a point source and still eludes me along with the rust in the rear hatch that I knew was there. The dash hasn’t had the carpet cover taken off in years and it has blistered and boiled in the sun, so that’ll need extra attention to. I had a great time along the way tho and ingenuity won out over common sense a few times. One in particular I couldn’t let go and so took photos. I present to you the almost longest ¼” ratchet drive extension I’ve ever seen:
Suprisingly, this extension was fully self-supporting and didn’t actually need supporting without falling apart! And the reason for its construction, the pedal box:
Thankfully I didn’t have to resort to including the uni joints as extra extension as things would have got REALLY interesting if I’d done that, I think I almost broke the ¼” drive as it was using the ¼” to ½” adapters that I made up from a ¼”-3/8” and then a 3/8” to ½” adapter. It was effective tho, so that is something to say about the quality of the Sidchrome products I used!
Before I close out I would just like to say one thing: “Thank (Insert Deity name) for zip lock bags!” These have hopefully saved my existence when I have to put the car back together. I count around 50 bags all labelled for different parts of the car, all with identical looking bolts. Am I glad or WHAT that I decided it might be worth the effort. If there is anything I can recommend to future zed builders: capture and label all bolts, screws, washers etc so you know where they go again when you are done! The photos have also proved to be a life line in trying to work out what order those screws go in even tho I know what they belong to, just take photos of everything. If you think “Hmm, that could be interesting to put back together” take a photo, believe me I haven’t started putting the car back together yet and already I am very thankful for just a cheap point and shoot camera to keep a record of things.
Well, that’s it for now. This week I have to just do a few tidy up things, like scrape off all the tar from the cabin (YAY ) before the car gets steam cleaned next week. Then it’s fuel tank and brake lines out for sand blasting before going to the panel beater in around 4 weeks. Bring on the rebuild
Posted 18 August 2010 - 08:06 AM
Wheels look good. if you're not too fussed about the guard lips, the fronts lips can be trimmed and the guard pumped out without spoiling the lines. I've had this done to mine to fit 18x8" rims with -2.5mm offset. The rears needed to be trimmed and a small "eyebrow" flare off a Suzuki 4wd screwed to the rears to cover the wheels. Only adds about 10-15mm to the width but covers nicely and doesn't spoil the natural lines of a Z like a ZG flare does.
Posted 11 September 2010 - 09:37 PM
Well I'm back away for work again but before I left I (Dad) dropped the wheels at Wheels World for them to put some old rubber on so I can get the panel beater to sort out the guard rolling. I got an email today with about 17 photos of the new wheels on the car and since I'm having withdrawals I figured that meant I had to post them all, so apologies, as usually, for the affront of pictures.
I must say, seeing new parts ON the car instead of just scattered around bedrooms in the house makes me want to get it fixed and going ASAP. 10 points to whoever can spot the most rust spots tho I have more pics on the camera at home but in summary it's:
- Sills – Minor
- Doors – Minor
- Battery Tray – Few pin holes, but looks like it’s lost a wheel at some stage and pressed the panel up, so that will get fixed
- Firewall on drivers side – Pin holes
- Chassis Rails (Minor on passenger side at the end of the floor rail)
- Drivers floor – Pin holes
- Rear Hatch – A fair bit, but that has been growing for about 6 years, so not too bad considering
- Rear floor – Pin holes again
So yeah, the steam cleaning didn’t work very well, I couldn't get all the grease out of it yet, the tar is killing me, it still rusted and I'm unlikely to make Bathurst at this rate!!!
But, PICS =D
Did I say I have some wheels to sell? Cause I get the feeling that 17 for 1 car is starting to push it a bit.....
I’m not decided yet but I think I’ll pass on the black 5 spoke race rims. Stockies and 3 piece Japanese rims will stay as roadies.
Rolling Radius. I love how the 225/45/16 is about the same height as the 205/55/15, no centre of gravity or rotational axis change in height!
And yes, that is my latest work area on the dirt that used to be our front lawn Dad tells me I'm not allowed to damage the new driveway whilst making a mess removing all the tar.
Well that is about it for the next few weeks, I'm stuck away for a while and I'll be busy when I get back. Come on the second half (rebuild) of the zed! The new goal is to make the regularity series and win it next year
Posted 12 September 2010 - 11:47 AM
I vote for some clearance shots with the rubber on, exactly like you did with the rim before the rubber.
I've already got coilovers but still hesitant about 8" rims. Are they 16" or 17"
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