Hey guys...been doing a lot of research for the last few days, but I can't seem to find any definitive answers to what I'm looking for. It turns out I need a new motor and possibly turbos, and I figured this was the time to possibly go single. To give you an idea of what I'm looking for, I want something reliable first and foremost, something that will put out b/w 350 and 400 rwhp with fairly conservative tuning, mainly street driven with occasional track events (road racing, not drag).

ANY input is appreciated, and pointing me in a direction that sells it for a good price is even more appreciated!

Thanks!

 

R85 www.kgparts.com

 

I was / am in the same boat, what I definitly didn't want to loose was the speed at which the twins spooled up, since going Non-Seq. with a second bearing beeing bad, I don't get full boost untill 5-6k rpm... and THAT sucks...
Having also owned a very well working twin system, I wanted the response, but without running at the ragged edge of reliability of going 400 RWHP on twins...

After doing a lot of searching, and talking to a lot of rotary experts, from US, and Austrailia.. I decided on a GT35-40. Ball bearing setup... there are several people selling them here, and from what I've read they seem very reputable, I'm personally holding out for a custum manifold made overseas, and this will allow me to retain my stock smog pump, and with the ignorance in Ca. as to rotaries, specifically FD's... I might actually pass emission with a single / GT35-40. I won't find out for another 2 years, since I'm smogging it with the standard twins etc...

But that was a big concideration... and according to specs, 35-40's run on the ragged edge at around 600 hp... so 3/4 is a nice safety margin for me, as I am trying to go for 400 - on pump gas (450 with 100 oct.
gas)....

I hope this helps...+

 

doing a single turbo will end up costing you about 4000 more than fixing your stockers

new clutch
more fuel
intercooler ect.

 

Interesting...what do you guys think of the T04R setup? Good one being sold used...

I already have a stage III clutch on there, a medium M2 IC, so I figure I'll need to upgrade fuel pump, maybe bigger injectors. I currently have a PFC on its way.

Thanks for the all the input guys!

 

definitly need bigger injectors, fp, resistors and rail

the best advice i can give you is to buy a kit and not try to peice one together..

Im peicing mine together and its a damn pita cause no one has the flanges for the wastegate/ oil fittings/ an adapters ect..

ive been peicing it together for about a year and if everything goes right i should have all the parts by wednesday

to4r is kinda small, but still enough to break your diff..

i say go 35/40, although ive never been in a car with that kit. I know that turbo is a peice of gold

 

T04 is Old technology, 1970-1980 and it's a Disel turbo.
GT35-40 is 1990's Formula 1 Tech... before they outlawd turbos on F1 cars...

 

allenhah, consult with GD at osdesigns, he is in the bay area and has extensive experience with single turbos. We currently have 4 white FD's all with single turbo setups that run great and make a lot of power.

 

T04r is a fine turbo, might be older but the 35/40 hasnt proved better. That and the t04r is alot easier to rebuild then the gt35/40 if problems were to occur. I love the T04r, spools to 14psi by 3800rpms and pulled crazy

 

is it a HKS T04R? there seems to be alot of "copies" of that paticular turbo where people call it a "T04R" ask the guy if its HKS T04R or one thats similar to a T04R. A HKS T04R is big $$$$$$$

 

Well shoot...why don't I just give you guys the ad:

Link

I don't know the guy, but it sounds like a good deal. What do you guys think?

 

its not the HKS, its a little different then most due to the exhaust housing, people can attest to me as a person and the setups that I go with. Im selling to go bigger.

 

i disagree with the part about the T04r being easier to rebuild. I know someone that had to rebuild his and the cost of the rebuild was almost as much as buying a whole new compressor unit! It totally defeats the purpose of having a rebuildable turbo when the cost is just as much as a new one. But I do agree with you that it makes good power and spools fast

 

350-400rwhp? rx6 all the way.... its pricey, but spools as quick as stock twins and is capable of just around that power range... plus its soo nice and smooth......

 

Ive had one rebuilt for a customer about a year ago and the cost was $300

 

If you want a T04R - then call Precision and get a PTE67 - as it's the identical turbo for much less. Rebuilds are about $300.

 

What about a T-66 ? Anyone know about these ??

 

PT turbo's are not identical I've had both a PT 35R and a Garrett GT35R in my hands far from the same.

 

From everything that I've heard the PTE67 wheels are replicas of the T04R - I can't speak to any of the others - just the 67.

Again I can't say for sure - but the dynos look very very comparable - and many reliable sources have told that the wheels are indeed replicas.

But who knows - HKS turbos are just ridiculously priced.

 

You 'gotta, Pay to Play !

 

Hahhahaha....true true.

Right now, I'm thinking of the Gotham Racing GR63 kit, which is supposed to spool really quickly and maybe the Greddy T04E. The RX6 is cost-prohibitive at this point.

 

yo talk with steve or nicko at a spec i just got my gt35/40 kit and dam!! it fits perfect dope *** exhaust manifold down pipe tial wastegate and its so streetable im shooting for 390on 93 pump mybe 400+on race gas on the stock motor www.a-spectuning.com

 

I tried contacting them since last week but no response. I'm looking to buy a turbo setup NOW, so I think I'm going to go for the XS Engineering T04e setup from Jason at RX-7 store. I've been doing some research and the dyno charts seem to reveal that this is the kit that I'm looking for at the right price.

 

HKS turbos are way overpriced of that you are spot on. They are essentially Garrett GT series turbo's rebadged. HKS sometimes has different sizing in A/R but it is the same.

 

When did you try to contact the shop?