Y2A

Greddy T-67 25G VS. HKS GT3240

Which Turbo is bigger?

Which Turbo is capable of producing more HP?

Does anyone have the possible max HP of each of the Turbos?

Which has a quicker spoolup?(less laggy)

Overall, which Turbo is better and which one would you go for?

There was a post comparing the HKS 3037S VS the Greddy 25g, but I wanna know how the 25g compares to the 3240 since the top two cars(both EVOs) on the Tsukuba circuit in Japan run a 25g(Jun EVO 5 - 1st place) and the 3240(HKS EVO 7 - 2nd place).

94AWDcoupe

iTrader: (125)

I have been running the 25g for almost a year now and have been researching for a better turbo. First advice. I love this turbo and is working extremely well with my setep. But don't consider the 25g unless you are increasing the displacement, IMHO. You can look at Mike Welch dyno graph of the greddy kit on EVO 8 on the AEM forums. He just made 518whp. Engine is stock save 272 cams and studs. He likely would see 30 more hp with headwork. But the graph to me looks awful laggy. I think the 10cm exhaust was a poor choice. The 8cm will spool quicker and can support well into the 500s. Staying with the stock intake would likely spool the turbo sooner with minimal if any loss on top. The stock intake rocks and when a tuner does a back to back test and post the results you will see. Some tuners in Miami have been seeing 550whp from this turbo on the 2.0 for years. Very popular down there.

Onto the 25g or HKS3240? I e-mailed Norris Designs with these questions: What is the most WHP you have seen from the 25G? What would the hp increase be by switching to a HKS3240 with no other changes? How would the spool be compared to the 25g?

They answered: 460WHP. 50WHP. 200rpm sooner.

I would be weary of using a 3100$ HKS3240 on my car simply cause there is no garrett cartrige available to fix the turbo if it gets hurt. HKS is the only one using a gt32 BB turbine. I have almost killed my 25g twice. The first time was on the intial install. I was clocking the compressor housing and the snap ring was not all the way back in. The compressor housing popped off at 6000rpm on the first test drive. I have been running a compressor clipped 25g from day one Just yesterday I was test driving the car and at 25psi an intercooler hose blew off. The air pressure releasing from the intercooler blew a hole right through my aluminum intake pipe I couldn't believe my eyes. Lucky not shrapnell reached the turbo! **** happens and turbos DO get hurt even when you are careful.

Guru

iTrader: (6)

Actually Garrett DOES have GT32 cartridges availble but why not use a Garrett GT35R? I use them and get 500 whp easily with great spool up and incredibly efficiency and reliability. They are full ball bearing and use standard T3 flange. Best part is the cost which is less than half of what the HKS costs.

nabit

In a mag I have they have a company that got 470whp out of a gt32 @26psi w/ apexi s-afc II, mas pipe, cat-back exhaust,NEW o2 housing,bigger injectors, hks 272 cams.FMIC,WALBRO PUMP,ams intake for boltons....

Then W/ the same stuff they changed to a gt35r and made 366@14.5psi, 400@18, 440@22, 480@25 and a big 525@29psi...

I like the gt35r and the setup they used, just put your boost control at 14.5 or so for normal driving and then when you want to rip crank it to the 29psi, and just hold on!!!!

Yes I know don;t believe everything you see in a magazine, but then the same goes for the internet...

94AWDcoupe

iTrader: (125)

Garrett sells gt32 cartridges. They dont sell gt32r, the ball bearing version. Only through HKS. The gt35r may be a bit laggy for my taste. The only person who can provide great spool up info on the turbo is Gary Andriotis. He switched from a to4e-60/stg3/63 to a gt35r. the car picked up 900rpm lag. The 60trim fully spooled at 3900, the gt35r fully spooled at 4800. In my opinion a good street turbo has to be cranking at just over 4000rpm. If you have to wait till 5000 its not fun on the street. First gear becomes useless for anythig but a drag race start.

Y2A

damnit, I forgot to mention getting a stroker kit with the turbos So how much will a Jun or Tomei stroker kit aid the spoolup of either the 25g or 3240? I heard bad things about the toda kit thats why I didnt mention them .

nabit

From info from the mag above they state that they experienced 100rpm more lag on the gt32 and 600rpm lag on the gt35r w/ the boltons listed...So about the same experience...

TOMEI EVO 7

bump

Crazy4Cars

iTrader: (1)

I know in person the guys at Jun and when I was there, I asked them about it and they said to me that, they use that kit, because they are sponsored by Greedy. I also talked to them about it and they told me this: According to him this is pretty much the comparasion give or take a little here and there:

T67=HKS3040
T78=HKS3240

Y2A

Yeah I made a post about the T78 and asked how well it worked on a EVO, instead I got only 1 informative post from one of the vendors and all the other posts were flames against me . Even if the comparison u made between the HKS and Greddy turbos arent as accurate, some people still need to grow up .

robertrinaustin

iTrader: (5)

MZM in Austin is in the process of installing the T67 kit from Greddy. The car should be running this week and I'll see if I can get a dyno to post and list of mods for everyone to review.

Crazy4Cars

iTrader: (1)

There is no need to wait: Here is the dyno from RRE running the
T67

https://www.evolutionm.net/forums/sh...threadid=55862

Y2A

bump

TOMEI EVO 7

bump

Crazy4Cars

iTrader: (1)

Bump for what??????????????????????????????????????????