I don't understand why cr would limit power. If he couldn't maximize his turbo, that's one thing. He should be able to run 2-2.4 bar on his gtb with stock compression so long as his head stays put AND he should make more power than a lower cr setup. Am I missing something here?Jason i think you might find that your CR is too high for 300hp. Should have used the 2.0 PD 8v pistons which would have helped a little.
Either way it will be interesting to see your results
What? Who the heck is that, and why don't we all know about it?I know of an ALH with studs and really close to stock CR running 38 psi on race tuning (RC7) with no coolant issues...
Just because you didn't hear about it doesn't make this a joke, there is no joke he's talking about MAXRPM's car do a searchWhat? Who the heck is that, and why don't we all know about it?
"Near" stock CR? Why would you build for such high CR and then run 38 psi....? RC7 exists? Is this a joke?
38psi, >19:1 CR and a comparably crazy amount of fueling is going to produce stupid high PCP. Coolant issues would be low on my risk list, after piston cracking / meltdown, losing rear main seals, and throwing a rod through the block....
Oops sorry I was a little ruffDude, I wasn't being inflammatory, just curious. I know about maxrpms car, but to my knowledge no one has talked about RC7 and / or 38 psi. Did I just miss it?
Man, I didn't know the 2260 could safely tolerate 38 psi... now I am scared for his durability. yikes.
Even in stock applications with 3.0L displacement some GTB2260 are requesting 25 psi, it's not the one commonly used, though.shizzler said:Man, I didn't know the 2260 could safely tolerate 38 psi... now I am scared for his durability. yikes.
Which one is it?Even in stock applications with 3.0L displacement some GTB2260 are requesting 25 psi, it's not the one commonly used, though.
Good friend of BoraChris, head started lifting at 2.2bar. Chris Bora was using a standard 130 engine. Bobby is ARL 150 engine, pistons are different slight, CR might be different, not 100% what the difference is.My cylinder head isn't stock, but would be interesting to see what real effect it has. I am using the PD150 bolts so hoping I keep the head down on the block nicely I believe Chris' head was lifting at 2.5 bar - I am at 2.2 now and have had no water loss whatsoever.
Bump for clarification.Johan,
I see your sig had GT2260V and R783's. Rub87 commented on "GTB" and others had said you used 1100HF's for this. Can you clear the air a bit? I *think* this result was achieved with a GT2260V and Firad 1100HF's, correct?
--edit-- any details on your airfilterpanel?
According to his profile Johan has not logged on to the forum since June, I pm'd him a couple of months ago and had no reply either.Bump for clarification.
Johan is busy busy busy as allwaysAccording to his profile Johan has not logged on to the forum since June, I pm'd him a couple of months ago and had no reply either.
Johan is busy busy busy as allways
I'll give him a hint...
drove his 285bhp Lupo this weekend... it's insane !
JW
Johan is busy busy busy as allways
I'll give him a hint...
drove his 285bhp Lupo this weekend... it's insane !
JW
FWD... I think he has a 4motion rear axle... but don't know if he is still planning on putting it on...Is it 4motion or FWD?