My first HG failure was at 21.75Psi (1.5 bar) too with 10mm ARP studs.
In my opinion these 10mm ARP studs are okay for a safe tune and conservative boost level.
But it's on a knife edge build. A little bit too much cylinder pressure, and the heads are lifting and burned HG are the result.
It would be very interesting which fasteners he use in this race engines.
Maybe he used some ARP L19 custom studs. And 1400 HP from 24 PSI on a 4 liter engine is awesome. Respect to his head work.
Cam specs, head porting, intake Turbos etc would be interesting too.
Nice to hear from you!
Yes you are right, this monster is so much fun to drive. I had a smile on my face every time I pushed the throttle down. Hahaaaa.
And I'm very sad the HG failed again. I hope we are on the right way to make some big numbers with other head studs now.
Some of you know my 1UZ twin turbo Supra MK3 build a few years ago.
Now I'm searching for some stronger head studs.
But a little story advanced...
I upgraded the mains with ARP studs and the head studs was 10mm ARP in the first build, too.
After a head gasket problem (Cometic...
Oh, great numbers with only 16psi! That's awesome!
Which cams do you have?
Ok. Good idea to split the intercooler.
I know that radiator problem and fixed it with the hydraulic fan. But your idea is a lot better if you have enough room for a side mount setup.
Man, I love this monster! Absolutely great work!
I'm happy to see some more pictures and results...
Is there a big difference in IAT between the old intercooler setup vs the new side mounts?
How much Boost do you running? 26.8 psi at the Dyno, right?
Hm, I think the T56 is a good&strong transmission?:confused:
Maybe you need this mod, to be sure there is oil on the input and counter shaft every time.
I killed my R154 input shaft gear and counter shaft too. In my opinion it's caused of low oil level in the front of the transmission...
Oh man... Your project is so f...ing awesome!! I love this custom build up. I know it from my own project, it takes so much time and hard work to realize your ideas. Enjoy it and have a lot of fun with you amazing car!
BTW, what is your experience with the T56 Magnum? I'm planning to buy it...
I've done a little bit research a few month ago, and if I'm right, the T56 Magnum shifter position should be approximately in the same place as the R154. But the overall length is a lot more.
What I found on YouTube is very interesting.. Check out this mod on a T56, which you can copy for...