R32 Suspension Geometry
R32 Suspension Geometry
Ok, so here's my project: I have an RB26DETT engine and transmission, I have the complete rear cradle and the front cradle from an R32 GTR, I have a 1986 BMW 325e to put this all in. I only really have one major problem, I'm not sure how to locate the pad that has the four studs on it, attatched to the uprights on the front suspension. A friend has the front clip from a GTS-T that he bought for the engine. I was hoping that the uprights were held in place in the same manor on the two cars, so I could use it as a reference, they both have the same (or similar) uprights, but the GTS-T's control arm is different. Does anyone have information on how I might be able to locate the stock GTR uprights, or if I could modify things so that the GTS-T's upper control arms and mounting locations might work? Also, I need to source the lower control arms and ball joints for the GTR front suspension, and the rear driveshaft and attachment bolts, as well as the ABS computer, ABS actuator unit, and the g-force sensors and of course, all the electronic peices would need to have the plugs still attached with about 6" of wire so I can make my wiring harnes.
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Tofubadguy
- Posts: 160
- Joined: Tue Mar 11, 2008 4:16 pm
- Car: 94' R32 GTR, Track Car
90' Silvia, w/ RB25, Track Car
90' 240 AWD LHD Coupe, RB26, in the works
99' 4x4 7.3 SuperDuty
04' 6.0L Excursion - Location: Phoenix-ish, AZ
- Contact:
Re: R32 Suspension Geometry (69trgt6)
The 86' is a cool car. Will be an interesting project.
It sounds like your going to make it AWD? Nice plan if so...! I'd have to say that it would be easier if you had wound up with the motor and transmission in a front clip as you could graft in the inner fender wells and 'coilover tower' to your Bimmer for a perfect fit for all the GTR suspension. Everything else up front is cross member mounted so you'd be good to go.
If you just want to know if the "Upper Link Bracket" (the part with the 4 studs) needs to go in a certain place in order to keep the "Upper Link" (the arm between the bracket and the "Third Link") at a certain angle, then I can tell you what angle my upper link is on my 94 GTR. The pivot center on the body bracket is right at 1 inch lower than the pivot on the Third Link. My car has been lowered a bit so I can imagine that it was probably fairly neutral from the factory to limit the amount of suspension load induced camber.
These parts are listed and have a decent drawing on page CH-220 to CH-222 in the factory service manual found here... http://www.nicoclub.com/FSM/rb...l.pdf
Here would be a good place to shop for a stripped front clip I would imagine. There are those folks that want an RB26 but are going with the 25 pan and transmission. You may just find all the suspension mounting sheet metal you need left over from someone else.
Maybe when your all done you can give the AWD 325iX's a real show.
Think about it... A German car, and a Japanese engine, heck all you'd need would be some fine Italian leather seats and you could call your car 'The Axis'!
It sounds like your going to make it AWD? Nice plan if so...! I'd have to say that it would be easier if you had wound up with the motor and transmission in a front clip as you could graft in the inner fender wells and 'coilover tower' to your Bimmer for a perfect fit for all the GTR suspension. Everything else up front is cross member mounted so you'd be good to go.
If you just want to know if the "Upper Link Bracket" (the part with the 4 studs) needs to go in a certain place in order to keep the "Upper Link" (the arm between the bracket and the "Third Link") at a certain angle, then I can tell you what angle my upper link is on my 94 GTR. The pivot center on the body bracket is right at 1 inch lower than the pivot on the Third Link. My car has been lowered a bit so I can imagine that it was probably fairly neutral from the factory to limit the amount of suspension load induced camber.
These parts are listed and have a decent drawing on page CH-220 to CH-222 in the factory service manual found here... http://www.nicoclub.com/FSM/rb...l.pdf
Here would be a good place to shop for a stripped front clip I would imagine. There are those folks that want an RB26 but are going with the 25 pan and transmission. You may just find all the suspension mounting sheet metal you need left over from someone else.
Maybe when your all done you can give the AWD 325iX's a real show.
Think about it... A German car, and a Japanese engine, heck all you'd need would be some fine Italian leather seats and you could call your car 'The Axis'!
Re: R32 Suspension Geometry (Tofubadguy)
Yeah, that's what I was thinking when I went to check out my friends stripped GTS-T front clip... But for some reason, it never popped into my head that I could put up a "wanted" post for stripped R32 GTR front clips... I'm glad that someone was thinking...
I do know that Christian Newman is also in the process of putting an RB26DETT into an E30... He's modified his to be RWD only, but he has a hell of a build going. It'll be some time before I'm able to build my engine to get big performance... I figure, one step at a time. It's going to be enough of a trick to get all the GTR driveline stuff in the E30 and get the ABS and AWD to work properly... And although I have the rear steering on the rear suspension cradle, I am going to eliminate that little feature...
If anyone does happen upon this post that has an R32 GTR front clip that they would be willing to donate (hey, I'm on a budget here... and I know that budget and car project should not be in the same sentence...) to my cause... Please let me know...
I do know that Christian Newman is also in the process of putting an RB26DETT into an E30... He's modified his to be RWD only, but he has a hell of a build going. It'll be some time before I'm able to build my engine to get big performance... I figure, one step at a time. It's going to be enough of a trick to get all the GTR driveline stuff in the E30 and get the ABS and AWD to work properly... And although I have the rear steering on the rear suspension cradle, I am going to eliminate that little feature...
If anyone does happen upon this post that has an R32 GTR front clip that they would be willing to donate (hey, I'm on a budget here... and I know that budget and car project should not be in the same sentence...) to my cause... Please let me know...