Hey guys

I m about to order my turbo kit but im stuck between t-78 and t-88

does anyone have a dyno graph ?

i ve been reading different capabilities from site to site. Any owners can give me any experience feedback?

Thank you

Con

 

Dont buy either one they are slow to spool
Garett has alot of options plus the rebuilds are alot cheaper/ faster since they have more distributers

 

Buy a newer style gt turbo, all of the vendors on this forum that sell turbo kits will have one to offer

 

i see, any recommendations that wuold be better than the t-78?
i ve heard that greddy spools up a lot quicker than the equivalent of garret

 

Where did you hear that? (Greddy website) LOL. The technology on those Mitsubishi turbos is very old.

 

rhdjapan website and also other websites
re-amemiya uses greddy turbos ... i wouldnt believe that they are old even if i dont know

 

A GT35R would be the power equivolent of a T78.

also, I believe Greddy turbos are made by Garrett.

 

Greddy are made by mitsubishi turbos and not Garrett

 

gt 40 would be closer to the T78
What kind of power are you looking to make? Pump gas or race gas?

 

I'm running the T88 34D and would not recommend it. Its a bad *** turbo, its just dated, there are much better options out there now. Its quite laggy on a 13B even with a 1/2 bridge.

 

“No school like the old school”

Speaking from experience I like my T78, 450rwhp with less than 20 PSI isn’t shabby.

I was also looking at GT35r kits but to be honest I was not impressed when I saw some in person. All the hype on the forum was also a bust being most of the HP numbers are good but not the “second coming “people expected. The Greddy is a very complete kit and not just a collection of various parts from different manufactures. I also went with a Greddy FMIC and you can decide if you like how well this kit went together.

[img=http://img80.imageshack.us/img80/3521/33001ow8.th.jpg]



The GT40r or RD85 are a better comparison to the T78. The GT35r is a nice turbo but I question the comment about price of rebuilds. A T78 will set you back $500 or so, I can’t imagine a new cartridge for a Garrett turbo would be cheaper? Do some searches on GT40r and RD85 both at great turbos.

Zinx is right about the T88, that’s a huge turbo and the majority of guys that run them drag race. T78 also tend to be strong on the strip, but guys like Fritz Flynn have been road racing T78’s for years with great results.

However I do agree about how the new turbo’s out perform the older non ball bearing ones, but I wouldn’t dismiss the old ones as an option. If they were so outdated they wouldn’t be selling them anymore.

You’re supporting mods, like fuel injectors, fuel pump, engine porting, ECU and the IC you have will have a big effect on how the turbo can perform. Tell us what else you have and what your HP goal is and what type of driving you will be doing. And dont forget 3/4 of the people that give advice here dont even have a single turbo Rx7

 

im trying to reach solid 550whp

i have full ported engine with ceramic ianetti seals ceramic coated manifolds
1600cc secondary /850 primary
3row SMIC ( thinking of getting a v mount
greddy rad
greddy oil coolers
Re-amemiya throttle body and AST
Aeromotive fuel pressure regulator and 280lh supra TT fuel pump


T-78 is a non ball bearing turbo?

its a pump gas but its 98 and 100 octane.. almost like the racing gas

 

rofl:

 

Garrett GT design where being used by John Deer and Detroit Deisel, Diesel engine heavey equipment manufacturers for years before it was introduced to pertol in ball bearing. Those wheel desings have been around almost the same time as mitsubishi TD series.

 

T78 are non ball bearing . I am shooting for 550hp at 25psi, and I think I am there once I turn up the boost. But untill I get my LSD, and race axels its not a good idea.

I think your better off with the T78 , R85 or GT40R to reach those numbers. Go "V" mount !!!!! I like my FMIC but if I did it again I would get a V mount. Your porting will help also. I recall a guy in MD "FDVirgin" ? that recently had PFS built him a half bridge , w/T78 and hes at 550hp+ at 20psi (I think )

Do you have two fuel pumps or just one ? Oh and all my numbers are on 93 pump.
Have you thought about removing your AC and PS ? I dont miss either at all, and its a hell of alot easier to work on my car now.

 

T04Z is another great option. Very fast spool, and is capable of high boost.

 

To4Z ftw! Absolutely awesome turbo!

 

doesnt the t04z spool at 4.5k revs?

 

a/c and PS stays on the car

my SMIC greddy 3 row gives quick response, a lot quicker than the FMIC ...i would never put the FMIC on my car with all that piping. i thinking of a Vmount as i have said

I only have one fuel pump the 280lph denso supra TT model

 

I had the T88 34D and loved it. Went 10.8's on 20psi and made decent power. Dan Schecter is still running the older greddy turbos and running in the 9s consistently.

The greddy turbos tend to smoke, I've seen a lot of them having to be rebuilt for smoking. Right now 2 of my friends who have Greddy turbos have to get them rebuilt. I sold one that I thought was not smoking, guess what, it was.

I really liked the T88 34D over the T78 but nowadays I would just get a newer turbo.

Anthony

 

Your going to need a gt40 or larger or the r85
That 1 supra pump is not enough for your goal, mine started to drop pressure arond 465whp with 850&1600 injectors

 

is there any bigger than 280lph?
or do i have to connect two?

i never heard of the greddy turbos smoking

 

Absolutely not! Depending on porting and A/R the T04Z will spool immediately.

 

what porting and A/R should i be looking then to spool up at about 3- 3.5k revs and be capable over 500whp with the t04z?

 

1. Large SP
2. 1.00 A/R T04Z
3. Plan either water/meth injection or running higher octane fuel
4. Very competent Tunner

Do these 4 things= 500+rwhp