MyEnquiringMind Posted October 23, 2013 Share Posted October 23, 2013 That is a really beautiful car mate... well done... Cheers, Jarrod. Quote Link to comment Share on other sites More sharing options...
jamo240 Posted October 24, 2013 Author Share Posted October 24, 2013 Thanks chaps....I love the color too...not original, but I reckon it works on the shape well. Cheers Jamo Quote Link to comment Share on other sites More sharing options...
dat240z Posted October 26, 2013 Share Posted October 26, 2013 Hi mate, nice build. Ive also done the RB swap and have a slight vibration too when under light load. very mild but when feathering throttle in 4th or 5 th you can here the vibration a little more....is that similar to your issue? R200 also? Quote Link to comment Share on other sites More sharing options...
RB26DETT Posted October 26, 2013 Share Posted October 26, 2013 Keen to hear how this pans out, I have a rb26 in mine and when on the dyno the guys says there is a vibration at higher rpms, need to bring it back to investigate. Might look on hybridz to see if any other guys with rb conversions had similar? Quote Link to comment Share on other sites More sharing options...
zzzzed Posted October 26, 2013 Share Posted October 26, 2013 Mine has an rb20det but does not vibrate. Quote Link to comment Share on other sites More sharing options...
dat240z Posted October 26, 2013 Share Posted October 26, 2013 I wonder if us vibrating RB guys are all running r200s? Quote Link to comment Share on other sites More sharing options...
jamo240 Posted October 27, 2013 Author Share Posted October 27, 2013 Hey chaps..yes, I am running the R200 diff. I will let you know what I find....I am comfortable there is an answer....uni joint driveshafts aren't rocket science. I am pretty sure it is just a front/rear joint angular conflict. The angle checks with the special tool will tell the story. I don't think it is related to load (ie diff angle changing due to torque reaction), as I can get the vibration even at light load/high vehicle speed, whereas full load at lower speeds creates no vibration. Dat240Z: Yes, that description of the vibration is similar in my car....you can get it under both load and trailing throttle, but the characteristic/sound/feel changes slightly....it is related to speed...for example I can go to say 120km/h down a hill and get completely out of the throttle and the vibration is still there...it is a function of the driveshaft speed, not the load. Cheer, Jamo Quote Link to comment Share on other sites More sharing options...
zzzzed Posted October 27, 2013 Share Posted October 27, 2013 I wonder if us vibrating RB guys are all running r200s? Mines a r200 lsd Quote Link to comment Share on other sites More sharing options...
RB26DETT Posted October 27, 2013 Share Posted October 27, 2013 Mine is an R200 with a KAAZ LSD centre. I can't comment on when it happens as the workshop tuning my ECU told me and I haven't really driven the car to know myself. Quote Link to comment Share on other sites More sharing options...
dat240z Posted October 27, 2013 Share Posted October 27, 2013 Hey chaps..yes, I am running the R200 diff. I will let you know what I find....I am comfortable there is an answer....uni joint driveshafts aren't rocket science. I am pretty sure it is just a front/rear joint angular conflict. The angle checks with the special tool will tell the story. I don't think it is related to load (ie diff angle changing due to torque reaction), as I can get the vibration even at light load/high vehicle speed, whereas full load at lower speeds creates no vibration. Dat240Z: Yes, that description of the vibration is similar in my car....you can get it under both load and trailing throttle, but the characteristic/sound/feel changes slightly....it is related to speed...for example I can go to say 120km/h down a hill and get completely out of the throttle and the vibration is still there...it is a function of the driveshaft speed, not the load. Cheer, Jamo Yeah it sounds like we are all in a similar boat. My vibe is almost undetectalbe 1st/2nd/3rd. 4th/5th on light load seem to be most noiticeable.... Easy fix im sure... relatively... Quote Link to comment Share on other sites More sharing options...
TBOWGN Posted October 28, 2013 Share Posted October 28, 2013 Jamo, I'm sure it's in your post but what size rims do you run and what are your suspension specs? What would you recommend for an RB setup? Quote Link to comment Share on other sites More sharing options...
jamo240 Posted October 28, 2013 Author Share Posted October 28, 2013 Hi TBOWGN I run 17x8's on mine. 235/40R17 tyres. Suspension is King springs on shortened legs with Koni special D shocks. Adjustable spring perches which once set I have never adjusted again! I am happy with those tyres, although 225 would be ok too. I had to roll the guards to get them to fit too. I run Dunlop Direzza Z1's and they hook the RB up very well. I have about 450 BHP (not sure what that is in rear wheel kilopascals I am afraid). Cheers, Jamo Quote Link to comment Share on other sites More sharing options...
zzzzed Posted October 28, 2013 Share Posted October 28, 2013 335 kw Quote Link to comment Share on other sites More sharing options...
jamo240 Posted October 28, 2013 Author Share Posted October 28, 2013 You know what I'm thinking Mick.... How can one man know so much.....? Jamo Quote Link to comment Share on other sites More sharing options...
zzzzed Posted October 28, 2013 Share Posted October 28, 2013 Haha google Didgital Dutch unit converter Quote Link to comment Share on other sites More sharing options...
zzzzed Posted October 28, 2013 Share Posted October 28, 2013 http://www.digitaldutch.com/unitconverter/power.htm Quote Link to comment Share on other sites More sharing options...
jamo240 Posted July 16, 2014 Author Share Posted July 16, 2014 OK chaps....after some time off the car, I finally got a hold of an angle cube to figure out my driveline vibration. I checked the Universal joint angles, and as I suspected, the diff pinion angle was sloping up toward the front, making the pinion and trans output shaft 2.5 degrees out of parallel. Maximum permissible angle for joint misalignment is 0.5 degrees (note this is NOT the angle the joints can run at, but the DIFFERENCE in angles they are running at as a pair). So, I dropped the gearbox crossmember 5mm, and the differential front cross member (the one that holds the front mount) 15mm. That got the parallelism to 0.25 degrees. I didn't worry about alignment in the lateral plane at this stage, only the vertical plane. Took it for a road test and all sorted...whereas the vibration reliably turned up at 100km/h and up before, this time I went to 160km/h and no sign of any vibration at all. So...I will call it sorted. It's a bit of mucking around to refashion the diff crossmember to drop the mount that far, and it also means the torque reaction strap mount has to be re-made to ensure it is applying a restraining force to the diff housing against torque reaction in the lowered location. Anyway....while it was never a problem when the L series was in the car, there certainly was misalignment present, that once corrected, eliminated the vibration....something to think about if you are having problems with your RB installation. In other breaking news, I found that the front bushes on my rear lower control arms were shagged (they are urethane that I washed in thinners, and that seems to have attacked and degraded the material). Soooo.....does anyone have a set of lower control arm front bushes, or a complete set of original rubber or urethane? Cheers boys n girls Jamo Quote Link to comment Share on other sites More sharing options...
KatoKid Posted July 17, 2014 Share Posted July 17, 2014 Good to hear you got this sorted...slacker! Quote Link to comment Share on other sites More sharing options...
jamo240 Posted July 17, 2014 Author Share Posted July 17, 2014 Thanks Dave! Yes....slow to get it done but boy has it improved the ride to not feel speed constrained! The RB can just do it's thing now... Quote Link to comment Share on other sites More sharing options...
C.A.R. Posted July 31, 2024 Share Posted July 31, 2024 (edited) 10 years! Time flys... Jamo drops into my shop with his Z a few months ago. Unfortunately he'd clipped a wombat with it which had shattered the spoiler and damaged the RH front guard, and he wanted to know if we could fix the guard and paint it. Not a problem. In July he dropped it off. Jamo had fixed the fibreglass spoiler himself, but the guard had a crease in it, so we tapped the crease out and then prepped it for paint. Straightening the guard: Feathering the paint back: Base coat: Clear: The Z got a cut and polish, then we reassembled it: Edited July 31, 2024 by C.A.R. gav240z, 77260Z, AndBir and 2 others 5 Quote Link to comment Share on other sites More sharing options...
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