David_Wallis

Assuming max revs of say 7500 / 8000

What power do you think the block would try and split and possibly spin a bearing?

assuming the heads are secured well

David

David_Wallis

**** me, my grammar bad in title post of this one.

john banks

Won't it be a rapidly reducing (and worse than linear) mean time between failures rather than a sudden catastrophe? ie pick your engine life and risk profile and then decide?

David_Wallis

Im just thinking out loud sort of..

Youve decided that your limiting yourself to 450 ish..

My gearbox looking a Jun's site can take 600..

so do I limit myself to 600 or run over 600??

David

MurrayZA

I've heard of high output engines spitting out the head gaskets.
Warped blocks too (not with closed deck blocks tho)

S,M,G

I think your best bet is to fabricate a metal container under the car, then at least you can catch some of the bits, you could also put some steel bars along side the liners to try and hold back the inch of bore distortion with your 18 bar of boost and a bucket over the exhaust pipe with a pump init to put the oil back in the engine. Weld the two block halfs together, run it air cooled and weld the heads on....sorted.
Steve

wrrjones

they usto have the head gasket probs on cossies and turbo,d GSX suzis a friend of mine usto build mad bike engines andnever used a new block liked seasiond ones allready been stress releived and usto sort it with steel rings to compress the head gasket ... chris

C

LMAO @ steve/SMG

Wonder what mine is too come to think of it

Norris/JUN reckon the block on an Evo is good for 800bhp

Almost tempting to test that theory lol

David_Wallis

steve.. your so funny...

done those pistons yet?

it was a serious question

Chris... do it

C

David - I want mine to last more than 5 mins tho

David_Wallis

?

Well I guess Im safe with 550?

David

Andy.F

I think Rod at Axis racing is running a few 2.4 engines at 2.2bar on a big garrett with a 150 nos shot, that must be 600+ I would guess ? Depends on the use ? 1/4mile you can get away with loads, trackday use is far more punishing.

David_Wallis

Thats what I thought, do you know if they use std block bolts?

David

Andy.F

Not sure ? He never mentioned uprated block bolts in his emails. HUGE head studs though ! (which you will already have I'm sure)

You will find him on NASIOC, (Axis power racing) look under Vendors for sale, he has a deal on complete 2.4 bottom ends just now..........mmmmmmm

David_Wallis

14mm

Pavlo

I have seen some use ARP studs on the block, but they were no bigger than standard, could be in higher tension though.

Did I scare you?

It might be worth dowelling a journal or two to help keep things in line?

Paul

David_Wallis

Just a thought paul..

food for thought not so much scared..