Wax,s 260z 2+2 long term build

[waxhead]

Here is a downloadable pdf that will show the details on how to do it

 

http://www.skyline-gtr.nl/RB30_DOHC_Guide.pdf

[Zeddophile]

Its the rb26 that uses the bigger studs and it thought I would have to change the rb30 block to fit the bigger studs but I spoke to rips about it he told me that his datsun race car uses the smaller studs on an rb26 head.

If he can do this then im ok with running the smaller studs lol

 

Generally speaking, a lot of cars the headbolts/studs aren't a close fit in the head anyway, so as long as there are decent dowels in place, and the head nut gets good clamping forces on the head, it shouldn't be a huge issue IMO. 

 

If you wanted you could get some sleeves made up to sit inside the holes in the head to bring the diameter down to the smaller studs....

[waxhead]

Yeah thats a good point you could make sleeves to do that

I wont be doing it myself but its a good idea if you wanted to do it

I will get a set of arp studs and just leave it with that

The head has 4 dowels in it

[garvice]

But it means your zcar will do this if you want it to

Which of course would be a very handy thing to be able to do

Especially if you own a tire shop.

[garvice]

I am surprised that you didn't go this route with your oil pan.

http://forums.hybridz.org/showthread.php?t=150085

 

[waxhead]

Yeah i looked at that

It looks awesome but this was just easier

 

[waxhead]

Got my rb30 off ebay

It cost me a mere $20 , so its all stripped down and will be off to get hot tanked on monday

Looking at the conrods you can see why there is no need to run forged rods in the rb30det engines

[RB30X]

It probably had over 200k on the engine but you'll still see the original honing marks. Seen it several times when stripping RB's.

[waxhead]

Yeah its looks like it will be ok

Im going to put new bearings and rings in it and call it done

 

[Zedman240®]

Wax, grabbed a pic of the Patrol sump fitted un-modified and what ground clearance you have...you can understand the need for the mod you did!

[waxhead]

Thanks for that

I was working on my engine today

I checked the sump versus an rb30 one other than the bulge being at the other end the capacity etc are all the same.

I finished the pick up and very happy with that

Next thing is to check the pickup for leaks but i don't see it being an issue

The Engine was sent off to be hot tanked today and hopefully will have it back on wednesday. ready to put back together next week

Still unsure as to what oilpump to run but thats hardly an issue

 

The panel beater is coming around tomorrow and he is going to spend a week on it, he believes he can get it finished with inside a week.

Tomorrow I will remove the engine (l28) finally and get it on a crate so i can ship it off to the buyer.( thanks for your patience)

So its all go at the moment, I have a few engine port jobs coming in as well so that will pay for the zg flares etc

[waxhead]

Well got into the car big time today

Dash is out so i can get behind at the rust

Well i will let the pics do the talking

 

[waxhead]

I found a bit of extra rust as well

In the heater duct but not to bad will be easy to fix

 

Im pulling the air con out is the old aircon worth anything

[Brabham]

Member Dave Dimo on here wants the aircon. See his post in wanted section.

[waxhead]

OK i will contact him

Thanks for that

[zzzzed]

Wow i feel better after seeing those last pics

I only just started fixing a spot of rust in almost the same spot.

I also fond some in the4 heater duct. I think i might have to cut the heater duct right out to fix  it

 

[waxhead]

Yeah its bit bad than I thought for a car thats supposed to been back to the metal

However it can be fixed I will post pics of it fixed in the next couple of days

I have had the back done under the car and we are getting on to the rest of the panels now

 

[waxhead]

I have been busy building some engines for other people so not much to report on car

But did start to reassemable the rb30, with the twin cam head

I also finished porting the rb26 head up so just have to recut the valves now and its ready to go

 

[waxhead]

MY diff turned up today

Man how heavy is a r200 it almost broke my back

Seems its a 3.7 diff im guessing that will be just fine

Well I have no intention of changing it just yet

[Scando]

Yeah they're bloody heavy compared to an R180 hey!  At least the weight is low and towards the back of the car though.  What size wheels are you running and what do you intend to rev the RB to?

[waxhead]

Hell yeah scando they are heavy, my back was hurting after that

 

The rb30 im planing on soft cutting at about 7000-7200 and hard cut at 7500

Im thinking with the reputation these engines have for torque that i will not have to rev its head off

Also with the 3.7 diff its going to be high geared so im looking to build a torque monster

The std cams will be staying in it so that it has a good idle and driveabilty , yeah i guess im getting old

[Scando]

I'm running a 3.7 with 17's and it pulls around 230km/h at 6000 rpm.  Even if you're running 15's or 16's you should still be able to cruise at 100 at under 3000rpm which is always nice for a road car.  A guy I race against runs a 25/30 in an R31 coupe and also runs a 3.7 with 17's.  It still pulls very well down low but it does have 592hp and 600nm!  He seems to think a 3.9 would be spot on but a Z is a lot lighter than a R31 so i'd say the 3.7 should be pretty good

[waxhead]

Thanks for that information

Im not looking to get quite that much out of my 26/30 but its good to know its a good combo

Your right this is going to be a streeter so will be nice to have the cruising ability

[Brabham]

Hey how are you going with the 30/26? I am thinking of going that way now...

[waxhead]

OK well engine is coming along nicely

Got the n1 turbos for it

Just drumming fitting everything and will put it all together in the next week or so

Just not sure in my head what colour to paint then engine yet

 

You can see the mount for the castlemain kit to fit the rb series engine into the 260z