Engineering masterpiece: Modified 'Integrale' piston

Road-race engines and ancillaries - general discussion
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Guy Croft
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Engineering masterpiece: Modified 'Integrale' piston

Post by Guy Croft » March 2nd, 2011, 12:52 pm

Just for interest - hey - could be one of a 'GC' series - to illustrate the kind of fabulous junk I get to play with, this a 16v Integrale 'donor engine' (not!) that came in recently.

The std (class size unknown) piston set has been taken from a Delta 1600 ie and then machined with a bowl like the Integrale 16v (no valve reliefs though!) and all the cylinders sleeved to accept them. Then on fitting the professional building the unit discovered to his horror that the skirts hit the oil sprays....

I trust you will forgive the giant photo which exhibits the workmanship admirably I think.

Other beauties include the sump 'bolted' to the oil pump housing with self-tapping screws (because the old bolts had broken off inside), half the bearings run, the cylinder head coolant galleries corroded to death..

Another good reason for being very circumspect about buying a 'used engine'. Or even accepting one gratis! By the time you have stripped it and discovered the entire thing is scrap you've wasted the best part of a whole day.

and other short stories......

GC
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Integrale piston conversion.JPG
quick where's the angle grinder??
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Nobby
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Re: Engineering masterpiece: Modified 'Integrale' piston

Post by Nobby » March 2nd, 2011, 2:29 pm

Good Lord!

There, I Fixed It – Redneck Repairs™
Chris Burgess
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4v6
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Re: Engineering masterpiece: Modified 'Integrale' piston

Post by 4v6 » March 2nd, 2011, 9:31 pm

I thought for a moment that i could top that Guy, but i was wrong.
Is that a factory approved piston modification i wonder?
Tony Warren. GC #96.

WhizzMan
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Re: Engineering masterpiece: Modified 'Integrale' piston

Post by WhizzMan » March 3rd, 2011, 6:24 pm

Nice "modifications" on those wrist pins as well. Did he use a sledge hammer to slam them in?
Book #348

Guy Croft
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Re: Engineering masterpiece: Modified 'Integrale' piston

Post by Guy Croft » March 3rd, 2011, 6:57 pm

Golly - yes, never noticed that. Well done! Could be some anti-rotation device. Or better still a means of making a loose pin into a tight one.

They are still on the rods which are being junked.

GC

nabihelosta
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Joined: December 14th, 2010, 5:37 pm
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Re: Engineering masterpiece: Modified 'Integrale' piston

Post by nabihelosta » March 3rd, 2011, 8:32 pm

Hey guys! I think I shall send you some pics of BMW "race" engines I encounter here in Lebanon on daily basis.
Have you, all of you, ever seen, a cut, shortened, then tig-welded, connection rod? I bet not in your dreams!!!
Pics are to come soon!!
HORSEPOWERunlimited

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