Is this right?

[robo]

This is on piston heads advertised at 1000hp. Is this a grenade engine?

http://www.pistonheads.com/sales/3511513.htm

Bob

[twinturbo]

A well built engine of that era should last a few thousand miles.

Even the old Ford cosworth used to run 540BHP in RS500 Race Spec and over 630 in qualifying spec and that was a crappy design!

The old M12 1.5L BMW engine was good for 1500BHP in the right trim ;) ;)

A small capacity High output engine is always going to be more stressed compared to a similar design large capacity engine.

But modern tolerances, stronger build means that higher power can be achived with better reliability..


But 1000BHP from a 4Pot is not going to give you 10's of thousands of trouble free miles though. But it's not what it's for!

TT

[alga]

1000 hp from a 2.3l 4-pot? Bollocks!

[twinturbo]

http://fastestcosworth.com/

Look under "engine". That's on what is effectivly an old pinto with a 16V head.

TT

[robo]

Last time I read about a super test on four or five chipped cossie sierra`s they were all pushing 500+ hp and four of them had terminal engine damage before the test was over. I know things have moved on but 1000hp??????

Bob

[twinturbo]

The engine in the 1st link is not a sierra engine.

But I am saying that you can get serious power out of a well built engine, even one with an old design.

The Sierra I have linked to is very well know, it even made a Fool of Tiff Nedell and a Twin Turbo Lotus Esprit ;)


Look at a volvo B5xxx or B4xxx series engine and it has a bottom half of the block incorporating all the main bearings so the whole bottom end is one piece and the caps can's shift.. That's a serious improvement to longevity and power handling.


Most "untimely" failures on a well built turbo performance engine are down to external failures, someone tweaking the boost or soaring IAT's.

TT