VQ35de swap

[malevy]

Originally Posted by delorean502

I wonder what the chances are of some douche bag coming by and removing your oil filter. Or loosening it just to piss you off.

Why would someone do that to ME?? I am so well liked.

[presicion26]

Originally Posted by blee1973

Yea I'll have to consider the SR20DET. I have seen some very fast cars with modified versions of that motor. I have a good friend who has a lot of experience with that motor also.

Does anyone think I will be able keep the original tranny? Or am I better off just replacing it while I'm down there? If so, which models would be a good replacement?

Supposedly the Renault Tranny on the D can only handle 325HP....or so Ive heard.....

[malevy]

Originally Posted by presicion26

Supposedly the Renault Tranny on the D can only handle 325HP....or so Ive heard.....

Accepted limit is 300HP. Legend Industries learned of this limitation and was planning some trans modifications for the 1984 Turbo option.

Derek Bell in the UK has a number of performance parts that will work in our transmissions, including a one-piece input shaft. It is the coupler on the input shaft that is usually the first thing to break. Another option is Toby (DPNW, now DMC-NW) who has a replacement (stronger) coupler that he sells. These items will raise the max HP/Torque the gear box can handle but at some point something else will give. Some say that the coupler is a "fusible link" in the trans, to protect more expensive parts.

Either way, when I investigated the route of beefing up the stock Renault transmission, the cost was incredible! And that was back when the US/UK exchange rate was not as bad (for the USA) as it is now. It was a bit more work, but turned out to be less expensive to go with the Porsche 915 box. Even though Porsche is expensive, it was still cheaper than the alternatives. There are also lots of Porsche resources in the USA, not so much for Renault.

The most expensive single component of my VQ35 swap was the transmission. It also added some interesting problems to solve. Tom and I spent more time trying to work out the transmission issues (Placement, level, shift linkage, clutch setup) than the engine. If we could have used the stock Renault box, the swap would have been much less complex.

If you are staying under 300 HP, it may be worth while to have a custom adapter or bellhousing made to mate the VQ to the Renault box. One of the problems you will have is the short input shaft. I had a few ideas on how to solve that problem, but decided to go with the Porsche setup because there was a ready-made adapter I could buy to mate the VQ to the Renault.

The up side is, I can potentially add lots more power to my car (with more money) and not worry about the 300HP limit.

[82DMC-12]

you are so right about the tranny. upgrading the UN1/369 renault tranny is way more than getting a porsche one. I found a very rare g50/50 turbo transmission with LSD for a realy good price. The going rate for those are 7K to 12K. They can handle 800hp just fine. The regular g50 transmission is good for 450hp. porsche is the way to go for the price. The only thing i did not like about the 915 tranny is the problems they have with syncrose going bad.

[malevy]

Originally Posted by 82DMC-12

you are so right about the tranny. upgrading the UN1/369 renault tranny is way more than getting a porsche one. I found a very rare g50/50 turbo transmission with LSD for a realy good price. The going rate for those are 7K to 12K. They can handle 800hp just fine. The regular g50 transmission is good for 450hp. porsche is the way to go for the price. The only thing i did not like about the 915 tranny is the problems they have with syncrose going bad.

I am told the G50 will not fit in the DMC frame without some major frame modifications. The 3 rotor Mazda conversion used the G50. Based on the photos I have seen of other G50 and 915 conversions in DeLoreans, the axles do NOT line up correctly because the output shaft on the Porsche are higher up on the trans, so the entire assembly need to be lower in the frame for the axles to line up properly.

[82DMC-12]

i'm hopping that will go to my advantage because of the high inline 6. i've got my plasma cutter and welder ready!

from these pics it looks the same to me.

http://www.motormeister.com/suz/trans/clutch_trans.htm

[malevy]

Originally Posted by 82DMC-12

i'm hopping that will go to my advantage because of the high inline 6. i've got my plasma cutter and welder ready!

from these pics it looks the same to me.

http://www.motormeister.com/suz/trans/clutch_trans.htm

Measure twice, cut once.. I image the VQ35 is shorter than an inline 6, and I can not fit the engine cover on there because it is too tall. As you can see from the photos, I cant go any lower either.

The 90deg PRV is a very short engine, even with that mess of an intake.

Engine placement will depend on where the trans fits for the drive axles to line up. Once you get the trans set, you are stuck with where everything else ends up!

[82DMC-12]

I plan to make the trany to engine fitment as short as possible. I'm planning on using the bellhousing from the supra tranny and cutting and welding the two together.

This is why i love this engine.

http://videos.streetfire.net/video/Fast-Supra_71278.htm

[malevy]

Originally Posted by 82DMC-12

I plan to make the trany to engine fitment as short as possible. I'm planning on using the bellhousing from the supra tranny and cutting and welding the two together.

Why do all that work? Kennedy may have an adaptor for that engine to a porsche trans.


either way, I think you may have a height problem.

[82DMC-12]

No one makes an adapter, i already asked all the companies.

I did some measuring from my buddies engine and i've got plenty of room with a few inches to spare. He has a 240sx with a 2jz, and that thing will put you back in your seat to the point you can't pull your self forward.