Differences between G35 Attessa and older GT-R Attessa. Info needed.

[LS240]

Alright, so basically I just want to know all the important differences between the old GT-R Attessa systems with the RB26 and the newer systems in things like the G35x, which are powered by the VQ35. Little things like programming don't really matter to me, I just need to know the important bits about the mechanicals.

Is the bellhousing bolt pattern the same? If not, would I be able to use a bellhousing from the G35x to mate up to a GT-R transmission? I also need the specs on the distance from the bellhousing to the center of the front axles from both a GT-R and a G35x/M35x/FX35. If they're the same then mating a VQ35 to a GT-R drivetrain would be a piece of cake.

I know Top Secret built a VQ35-powered R32 GT-R and I believe JUN has a VQ35 350Z with Attessa, so I know this is entirely possible, but I would like to know the particulars on what's needed to make it happen. The reason I ask is a crazy scheme hatched in my head to stick a VQ35 and Attessa in an S chassis. Full Race already builds R14s with GT-R drivetrains so I know it's possible. It would actually be easiest to just use an R14 and do whatever is necessary to make the VQ35 work with the transmission. Sounds simple enough in theory. :coolugh:

Thanks for any help finding specs and info!
-Layne

[S14DB]

http://en.wikipedia.org/wiki/ATTESA

[LS240]

Ok, I'll ask a little more specific questions then. Does anyone have a diagram of Nissan bellhousing bolt patterns? Or can someone please explain the differences between the bolt patterns on different engines? Surely at least some of Nissan's engine families have the same bolt pattern. Are the VQ and RB patterns the same? How 'bout the bellhousing-to-transmission bolt patterns? Are those similar across Nissan's various transmissions?

Edit: Ok, so I just found out that the transmissions used for both VG and RB engines have the same bolt pattern for the center plate. In other words, where the bellhousing actually mounts to the transmission is the same, so you can use any RB or VG tranny with the bellhousing from either one. So now I need to know if the bellhousing bolt pattern on the VQ35DE is the same as a VG30? Also, did that same center plate bolt pattern carry over to the transmission in the 350Z?

Right now I see 3 possibilities. 1. The center plate bellhousing pattern stayed the same in the Z33 so I could just bolt a VQ35 up to the GT-R transmission. 2. The center plate pattern changed but the bellhousing bolt pattern on a VQ is the same as a VG, meaning I could use a VG bellhousing on the back of the VQ to mount it to the GT-R tranny. 3. Neither the engine nor the transmission center plate bolt patterns are the same between the VQ and the VG, or the RB for that matter, and it's time to start thinking about adapter plates or custom bellhousings. Phew.

[LS240]

Come on nobody even knows about the bolt patterns?

[fliprayzin240sx]

Come on nobody even knows about the bolt patterns?

Dood, you make it sound like we have G35s or GTRs in here. Your best bet honestly is go to Freshalloy and ask in there. Better yet, hit up a specific car forums and see if anybody have pictures of the housings or even the back of the engines so you can have an idea of the bolt pattern.

Anyways, considering how much fabrication you're gonna go thru, why are you worried about the bell housings? I think thats the least of your worries when and if you attempt this. Either way good luck with whatever you decide to do...:x:

[S14DB]

Your problem is going to lie in fitting the Front Diff and drive train.

[LS240]

Well my thoughts for the front differential are that since there were Attessa model cars with a VQ35 anyways, then I might be able to just use the oilpan from a G35x or similar, that is if a pass-through is required at all. Obviously this is dependant upon the distance from the tranmission to the front axles, but that distance should be variable with a custom driveshaft going from the transfer case to the front diff, so I could play with that as necessary to make it fit.

I'm just curious about the bellhousings as that would make the build a helluva lot simpler if using OEM parts was possible.

Of course, as you said, huge amounts of fabrication would be necessary anyways. I was thinking that if I were to go through with this at some point, it would be simplest to have a racing fabrication shop build an entire tube frame front end from the firewall foreward, using GT-R front suspension as Full Race does for their R14s. This would make everything simpler in the long run as it wouldn't be necessary to "modify" anything to fit. Instead that front end could just be built completely custom as needed to fit the mounts for all the components. It would also drastically reduce the weight on the front end. Win-win situation.

All of this works in theory, it's just a matter of having the money lol. I don't currently have it, but it never hurts to plan ahead.

[S14DB]

R14 Front suspension is custom.
http://www.full-race.com/r14/images/photos/_H0J9505.jpg
http://www.full-race.com/r14/images/photos/_H0J9503.jpg
http://www.full-race.com/r14/images/photos/_H0J9496.jpg
http://www.full-race.com/r14/images/photos/_H0J9517.jpg

[mikeorz]

Hi guys i dunno if you have abandoned this thread but i share the same interest in the bellhousings of various nissan engines/transmissions

In regards to the Jun 350z, they used a front from a Stagea with GT-R drive shafts for the rear, a holinger sequential gearbox and BNR32 transfer case. I guess some custom bellhousing is needed?

From my understanding all nissans(vq, rb, vg, sr) run the same bellhousing bolt patterns except BNR34 since it run a V160, so a rb in a supra swap would have been easy.

From what i understand you want to have a VQ in a R14?? it should bolt the bellhousing just fine, but if you want the 6-speed there is abit more you need to know.