Greddy T-88
 

What kind of power is the T-88 capable of? what rpm does the full boost come in at? Can the T-88 fit in the RX-7 without major problems? Thanks please reply

1FAST7

Re: Greddy T-88
 

The T-88 is a bad ass turbo. It can make huge hp. Ari Yallon has the T-88 on his car that went 9.58 in the quatermile. I believe he made 649 hp with that turbo. Also, if you are into import drag racing. Steph Papadakis ran this turbo on his tube frame civic becoming the fastest FWD drag racer in the world. There are 800 rwhp supras with this turbo so yes BIG HP can be made. There is a T88 kit for the 3rd gen but I dont know what year 7 you have. If you have a FC 87t2 - 91t2, then you can get crispeed to make you a T-88 kit for your car. You can email me for more details at gregfullwood@hotmail.com

yea, i have a 1994 Mazda RX-7(FD3S) twin turbo. I wanted to know if it would fit without and problems? And, does this turbo lag alot?

1FAST7

You are talking about a huge turbo, so yes the lag is significantly more than stock, There are also variables you have too take into consideration as far as spool up. Are you ported?

A T88 is kinda overkill. Alot of people have reached the 9 second category with smaller turbo's. Not saying it's bad, I've got the T88 kit on my FD. Just thought you'd like to know that a smaller turbo maybe what your looking for. (it would be much more streetable considering spool time.):eek:

what turbos do you suggest T-78, T04E, T04S, etc.?????

please reply asap

1FAST7

I have the T-78 setup
 

I have a bigger streetports and at 10psi this turbo seems lag and boost began to built up at about 3500rpm and beyond. If you have this turbo, you are looking for more boost to spool the turbo and the right fuel to accomodate it. I would not recommend you the T-88 because lag will be significant and it seems that ported is the way to go with these large single turbo. I know a friend who had the Greddy T-88 with stock seals and not ported and he told me that lag is very sigificant. I would say that T-78 is probably the biggest turbo you can go for street and anything bigger you will have more lag and not streetable. You might want to go with the Apexi IHI RX-6, T04s or something that size.

sorry but im kind of new to this single turbo upgrading. What company is the best? Ive heard a lot about greddy... Is there turbos that dont lag as much as the T-78 and give out about the same HP at the same psi????

1FAST7

Alot of people in Texas tend to agree the T-66 turbo is the best street turbo to get. There are several RX7s and Supras using it making really good numbers. The HP is just a little less than the T-78 i think but the lag is less as well. Rotary Performance could help you out I would talk to Pluto on here im pretty sure he has a T-66 and he was making 582 HP with NOS and 480 without.

Re: Greddy T-88
 

The T-88 turbo is a huge turbo..fits in a 3rd gen without much problems...this turbo should only be used for drag applications only

what about the triple k numbers? I've heard less lag then T-78

Ari actually runs a t78 on his car. I've seen him at IDRC events at LACR a couple of times and talked to his pit crew or whatever you call them...really nice guys. Anyways, if the t78 is big enough for him, it's probably good enough for just about anyone.

I have a T-78 on my 3rd gen and I'll say that for as big as the turbo is, from a dead stop there's not much lag*. If you're ruinning down the street say, at about 60, and punch it, there's a moment of hesitation, then BLAM, it hits like a sledge hammer :)

I think the T-78 is perfect for the street.

* I do have a 9.5 # aluminum flywheel that may aid in the quick spool of my T-78.

Forgive me if I'm wrong......it seems like that noone ever talks about any of the other factors in turbo size.....like manifold,lightened flywheel,gears,thermal coatings,backpressure. I always hear about the T-88 is too big without any other thoughts on why.....am I wrong or confused?

I guess you can see that I'm partial....yes I have a T-88 with a lightened flywheel and thermal coating and all the other bells and whistles. On my friends car the lag was really not that bad at all with a nonported motor.....just my $.02

i may be getting the T-78 turbo kit. does the turbo kit come with other accesories, if so what are they(such as BOV, intake, piping, etc.). What about flywheels. I want to upgrade mine and with a much better one. which one? thanks

1FAST7

T-88 is TOO BIG !
 

How many RX7 owners with T-88s are making 500-550 RWH or more and drive it everyday ?

Ari has run a Greddy T-78, hybrid T-78 and possibly a T-88 since Greddy is a major sponsor * but* with Nos he could afford to run bigger (mainly A/R).

1FAST7: How much horsepower are you planning on making ?

Depending on your motor, fuel system and intercooler a T-66 or a Greddy T-78 would be big enough for a street driven RX7.

Then again if you're planning on running 20psi or less the To4
60-1 and 62-1 are awesome !! easily capable ~450 and ~500 RWH with full boost early in the rpm .....no waiting for 5krpm+ for sign of life :D

Yeh !!! there's many Supras that make outreagous HP with big turbos, but that's peak !!! when they run in the 1/4 (some of them) -their trapspeeds never match their dyno HP numbers.... WHY ???

There's many RX7s making alot HP with smaller turbos. Combination is the key.

John D.
'88 10th Ann Ed T-II
10.80 @ 130mph
11.1 @ 129mph

For everyday use your right ....a T-88 is a little big......but then again it comes down to what your combination is. The 62-1 or the 60-1 are really close in size to the T-88. The compressor side is the same size but the wheel is a little smaller and you can vary your A/R sizes alot. It's all in how you build your car.....do you build it to what everyone is trying to sell......or do you do research on what actually works and design your own kit for what kind of driving that you want to do.

Most people seem to be into the "how much power did you get on the dyno"? When they need to be into the "what's your power and torque curve look like and what's your combination and driving habits"?

The T-78 is a good choice to go with on the street.....it's real close to the 60-1 or the 62-1. You just need to look at how efficient the turbo is at what boost level your trying to achieve and again what combination you have and what you might be thinking of in the future. No need on spending alot of money more than once if you don't have to..........like I have done:0)

1FAST7: The T-78 kit will come with all the hardparts for the conversion.....the BOV,wastegate,piping. You just need to look into a front mount also for better daily driving(IMO).

I have the JUN chromoly flywheel in mine .....I have talked to alot of people who would agree it's a really good one. I'm not really big on alum. or going really light....but that's for the way that I drive.

If you want to get a flywheel or clutch.....PM me and I'll give you the # of a shop that will be really helpfull to you. Very knowledgeable on these things and very helpful......

There's quite a difference between a T-88 and a To4
(60-1 or 62-1) ! both on the compressor and exhaust side.

Once you go with a single turbo upgrade of that caliber then I assume you're serious about making horsepower and the dyno will be the way to tune and get the facts. Not only peak hp but horsepower and torque curve throughout the whole rpm.

If your dropping a T-88 in your FD for the looks and to brag about having a big turbo then that's ok with me too.

Turbo compressor really depends on hp levels you're planning on making and as far as the exhaust side it's really tricky....it really depends on your application....drag, road race.....

John D

I agree with John here.

Here's my take on the choice of turbos.

< 20psi

Apex IHI 6, Garrett T60-1, Garrett T62-1, Garrett T04S


21-25psi

T-64, T-66, Greddy T-78,

26-29psi

T-70, T-72, Greddy T-88

>30psi

T-100, Thumper, Y2K, HKS T-51R......


I have been running both the T-70 and T-66 on my car. It seems that the T-66 generates a bit more heat when running more than 24psi of boost. My car is now fitted with T-70 and use the T-66 as a spare when needed or driving on the street.

pluto, the psi's you are showing, are they reliable at those levels of psi? or is that just pushing it??? thanks reply

1FAST7

I've got a T-66,62-1,T-78,T-88 and a few others around the shop so I'll go measure them today to see how different they are and how close they are.

If dropping the T-88 in for bragging is for me......no, how about cause it was givin to me. If I had to buy I would probably get the T-78 or the 60-1.(with the right wheel and A/R)

If I'm just confused then OK......but I guess we'll find out on the street class circuit next season when I'm out there. If I'm wrong then I won't do anything worth a shit.....but I think I'll do pretty good. You Texas guys are pretty tough.....but we'll see:)

We are doing a auto. supra right now and using a 62-1 with a special wheel and a couple different A/R's to see which one will work best with the auto on the street without having to change the stall right now. The turbo we have is good for around 600-700hp and still be efficient. At around 24psi+-

Pluto......you said you side with John. What exactly did he say to disprove what I have said? I also know what turbo's are capable of what......also .....isn't that a very vague reference point on buying a turbo. What boost it's good up to.....there are quite a few other factors that have to be looked at rather than just high boost.

Are you Texas guys coming out to the World Finals in Cali. Sept. 28-29th? I'd like to meet you and get a look at what combination your running with. You hit 582hp on the dyno right? What is your best time now? What weight is your car at? Sorry if I'm asking alot of ??....just trying to learn a little:)

Guess this thread is getting a little off course.....sorry.

1fast7: keep looking around at different turbo kits....don't buy what other people at these shops sell because there car ran a 9sec. 1/4. Find something that will work for your driving and still be upgradeable if you decide to change that style. You might be happy looking at the kit from XS engineering.:D

My T-78 kit did not come with a BOV. I had to buy it separately.

silvr94r2: A good setup on an auto Supra TT is a T04R with a .58 Good for 500+rwhp and can get full boost around 3600 rpm. Damn thing just squats and goes :cool:

I never said anything about you being wrong. The reason why I use boost level is because it's easier to understand. Instead of getting into the efficiency, flow, timing combination. It's easier to just use one variable to describe their optimum operating boost level. I have never said that any of these turbos can't be used for higher or lower boost level, I just think that these turbos can operate at it's full potential at the boost level I mentioned above. Of course, these are just my opinion and does not reflect to the actual fact of what they can do.

I'll be in the Worlds finals (pomona) that weekend. Looking forward meeting you there.

So far, my best time is 10.61@135mph on drag radials and I'm hoping to beat that in the finals. :) My car weights 3050lbs w/ me (170lbs) in it so it's definately not light. :)