Does anyone have any info/experience with this turbo? I was just wondering as it seems like it may be a good choice for my upcoming switch from twins. I am about to have my engine rebuilt and at least partially bridgeported. Just wondering if anyone knows some more about it. Thanks in advance. Laterz.



Zach

that is a HUGE turbo.... good for drag racing .... what are your plans for the car

I'm looking at a half bp FD, V-mount IC setup, Power FC, fuel system, all suspension work, pretty much all the goodies. I want to car to still be streetable when I have the boost turned down though. I am shooting for 475rwhp@15-16psi though. And I'd like to be able to set it higher when I'm running race gas as well. Pretty much just for drag racing. Auto-X isn't going to be a consideration. Even if it was, the half bp should spool that monster pretty quick. What's your take on it Vosko?? Also, you say it's big. But it's not bigger than a T78 right?? Thanx in advance bro. Laterz.



Zach

Well damn, if you only plan on running that 15-16psi, why get a turbo that has a peak efficency so higher??? Doesn't make sense to me, unless you want braggin rights......

I was going to look into a GT35/40 setup. However, I started hearing that they tend to break up power wise on the high end. Also, I was warned that a half bp motor might prove to be too much for a 35/40. I am looking for an alternative to that turbo. So it's the T04R, the T72BB, or maybe the T-51R Kai BB. And I never said that I was going to stop at 15psi. I just said that's what I want to run on pump gas. I will have a map for race gas and around 19 or 20 psi. I'm still wondering how much smaller this turbo is than a T78. Any help here guys?

T-04R or T-66 for the boost your running and plan on running.

What about the whp numbers I'm shooting for? Also, is the T66 a bb turbo? I know A-spec tuning is saying that they now have a T04R BB available, but that's the only place I've ever heard of that. The WHP numbers are very important to me since I'm shooting for a very low 1/4 time. Plus I'd be lieing if I said I didn't want some bragging rights with having the highest WHP 7 in the SC RX-7 club. The biggest reason is, I was looking at the Pettit Banzai package and I just feel that they want too much money for the product that they are supplying. Granted, that car is scary fast and gorgeous but hardly worth the $39,000 they're charging to do it.

The "Garrett" T72 is bigger than the "Mitsubishi" T78. The T66 is closer to the size of the T78.

Igy, thank you for the clarification. I am fully open to suggestion here guys. What turbo would be good for what I want and the kind of porting that I'm going to have on my engine? Like I said, I don't want a T78 and therefore not a T72 either. But I don't think that the GT35/40 would be able to satisfy what I am needing. Any and all help will be greatly appreciated. Also, I would prefer a ball bearing turbo. Thanx in advance.



Zach

T66 will work good, like jspec mentioned above

Well where should I expect to get full boost by on a half bp engine with either the T04R or the T66? That is another consideration for me.

your asking for a lot...streetability at one kilo on a BP engine, with top end pulling power and full boost with the lowest RPM's...

I don't want the lowest spool. But I don't wanna wait until 4500rpm either. I am figuring that with a half bp I should be able to spool one of the bigger turbo's fairly quick though. I'm mainly asking what rpm range do you think I should expect the turbo to spool. I do ask alot of my 7's, but they always deliver. It just takes patience when building the car. With as nice as your car is, you know what I'm talking about.

Should be around 5000 on either turbo with the 1.15 P-trim or the 1.00 Q-trim exhaust side. I personally ran the 1.15 P-trim 67-1 (between a T66 and T70)on a secondary bridge and had no problems with spool up. I think if you are looking for power at lower boost I would go with the TO4R. The T72 won't make anymore power than the TO4R until higher boost levels. You are correct in your worry about the 35/40. Did you know that the TO4R and 35/40 have the same compressor side? The 35/40 is ball bearing and the exhaust side is more restrictive, read not what you want on a bridge.

So the T04R with say a .84 A/R and a Q trim would be what I want or would I want to stay with a P trim even though I'm going to be half bp? I have always been told to go with a Q trim on heavy ported motors.

Believe me, 5000rpm's is not a problem. After you drive the bridge you will understand. The .84 Q is just going to choke the top end on the bridge. I would go with the Q-trim 1.00 for what you are shooting for. The only reason I went with P-trim is it was what I had. What do you rev to now 8000rpm, with the bridge there will be power till closer to 10,000rpm. I shifted at 10.5 in first, and 10 in every gear after, and it's going to want to go higher. You are not going to get 10yrs out of this motor if you drive it right. The bridge moves the power higher in the rpm range. I was reving to 10.5 with all stock seals and springs and no special clearancing or balancing. I also build my own motors, and if I blow one I just have to build another. If I was paying someone else to build my motor, there is no way I would run a bridge.

A half bp was not my first choice, but it's going to be what I need to produce the power that I want. A large streetport would probably still not be enough to spool one of the bigger turbos the way it would need to be. As far as building the motor, I can rebuild my own without a problem. I just can't do the porting yet. As far as simply rebuilding an engine, I have no problems doing that. So IGY you're saying something like a T66 or T04R with a 1.00 A/R Q trim would be about right and would have no problems getting me to the 475 to 500 whp range?? I would love to hit higher numbers once I tune to 18-20 psi, but the 15-17 psi range is where I want those original numbers to come from.

Innovative Turbo and Turbonetics can make you a BB T66 (or any turbo you want)

The TO4R only comes with a P-trim exhaust side, but can be changed to Q-trim. I would probably go with the T66 just because you can get ahold of one for cheaper than the TO4R.

How can I get a hold of Innovative?? I'm thinking that a T66 would be the right choice as well IGY. And if i can get it as a BB unit it would be great! That turbo won't have any problems with boost between 12-22psi right? Also IGY, I need to pick that turbo up with a Q trim exhaust side right?



Edit: I also just noticed something from a long time ago. JSpec thought that this was going into my FC. It's not! It's going into an FD chassis. The FC is going to be my daily driver. I am building this FD to prove a point!! Plus I miss my old FD so I'm building this one to replace it.

T66bb with a 1.00 AR Q-trim exhaust will be an excellent choice.

IGY, why didn't you mention the 68-1 yet? What turbo does that option come in? I'm guessing it's a variant of the T04 somewhere. Would that not be suitable for my needs or did you just forget to mention it?

One thing that I forgot to mention IGY.... A 1.00 exhaust size isn't available. Only .84 or 1.15 A/R. Is that going to make alot of difference. Also, I don't know how it will affect me. Is it going to take longer to spool or how does increasing your A/R affect the performance?

Smaller the turbine a/r the faster it will spool, but it will limit it on the top end/choke the motor.

Still no answers on my 68-1 question??

The 68-1 is in my opinion perfect for what you want. It will make just as much power as the T66 at lower boost, and then it will make more after 15psi. It is actually in between the T66 and T70 as far as how much air it pushes, but it does it at lower boost. I have a 67-1 which is the predecessor to the 68-1. The reason I didn't mention it is that most people complain about the price, because only Turbonetics makes it. I have also noticed that Turbonetics no longer has it in there catalog, so I assumed they didn't make it any longer. If you can find one and aren't worried about the price, this turbo will make you happier than the T66.





You should be able to get a 1.00 Q-trim divided housing or a .96 undivided housing. 1.15 is going to make you spool later and the .84 is going to choke the bridge(will probably rev to 9k pretty well, but will make less hp and have a smaller powerband).

BoostedRex, I am running a T-72 BB and unless You want to run at least 19 PSI dont bother with such a big turbo. It takes untill 4500 RPM untill You are spooled and then hang on. This big turbo is meant to be running at least 22 PSI and should be tuned for about 26 PSI. I am slowly working My way up to the low 20`s but am finding out My fuel is going to come into play. I have an extreem fuel setup with a sumped tank/10 AN lines and an Aeromotive 1000 HP pump/750cc/1600cc injectors and they are going to be maxed out before I can reach 25 PSI. I would get the T-66/1.00 exhaust BB which I think is the perfect size and run it at 18-20 PSI. It would kick but on the strip and still be fun to drive in the city. Be ready to upgrade Your driveline.

Sub-Zero,



With those injectors on a ported rotary, you should have enough fuel for 550RWHP @ 85% inj duty. Why don't you think you have enough? Does the Aeromotive flow enough volume at 66psi? The Bosch '044 does.



I bet your T72BB SINGS!



Tony

I think I've decided on the T-66BB unit. Everybody think that would be a good idea with a half bp? Just thought that I would ask. Laterz.



Zach

All this turbo talk is depressing me.. it just makes me want to go out and get a loan..

just drive your car and enjoy its streetable GLORY!!!! https://www.nopistons.com/forums/pub...#>/biggrin.png

That's the truth! I had days with the bridge that I just didn't want to drive it because I was tired of looking for cops!

That's the good part about living in SC. You don't have to worry about the cops. I do know what you're talking about though. I have had my days riding with my friend in his 10th AE that's half bp with a 62-1 @19psi. The cops messed with him alot until he reported one of the for harrasment. After that they haven't messed with him once. Hopefully I'll have some more news on my project as it gets closer to completion.



Hey Vosko, what kind of rear end setup do you recommend so that I won't have to replace it after avery few trips down the strip??

Yea, well I would definately keep it streetable. I'm probably going with a GT35/40 or something like that. I want some power but I gotta keep the quick spool up.

i saw a completely stock FD i could barely hear it. i was freaking amazed

i am running a stock 87-88 T2 diff . its VERY strong!!!!

I noticed that you're looking for a TII. I have an '87 with S5 tails. The info on it is in my signature and in the "garage." If you're interested, PM me and hopefully we can work something out. The car is located in Charleston, SC by the way.



Vosko, will the S4 diff bolt right up to our FD's? Thanks for the info on the diff by the way. Laterz.

yes it will!

Cheap turbo (see sponsor link at the top of the page) sells all the T series turbo's in BB or standard bearing versions. If you go with a BB turbo then the 1.15 housing should work well because the turbo will spool a little faster... For the power and boost your looking for the P-trim should work fine...