That's a small turbo...
My 3B Coupe project - Total rebuild
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1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racerComment
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Well that's a bit of a blow, looks like the engine could be scrap
After the crank re-grind I fitted the new bearings and torqued up the main caps. The No. 4 bearing had somehow become crimped and was damaged. After fitting another set, I could only get to 40lb/ft on the mains before the crank become stiff and at 65lb/ft it locked up. Afte taking some measurements off the block is seems the block is bowed in the middle, meaning the main caps are ovaled, no. 4 being the worst. JP still has the cranks to see if that is salvagable, if not I'll be starting again.
P**sed off is an understatement
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1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racerComment
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Oh mate, that is ****!!!! Just go for standard ABY bottom end and get some enjoyment...
Tonks4x4 - The Land Rover SpecialistComment
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Have you had the main alignment checked? You might be able to get the block align honed. ARPs do crush the mains slightly, so if your mains are out of alignment it won't take much to eat all your clearance.Panthero Coupé quattro 20vt
Indigo ABY coupé
Imola B6 S4 AvantComment
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I was going to put my 3B engine back together and throw that in, but it needs about £400 worth of parts and then I'd have mess around getting the down pipe to fit.
I do have a spare AAT bottom end, but I'm just finding it hard to get motivated to do it all again!sigpic
1991 Audi S2 3B - 2.5 Stroker engine
1997 A6 2.5TDi quattro avant - C4
1976 RD250E / 350LC cafe racerComment
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****! Never seen that before on an I5 - whats the history on that block?
At least you've got to the bottom of that and the crank is good. Did you find out what the oil consumption issue was?
Panthero Coupé quattro 20vt
Indigo ABY coupé
Imola B6 S4 AvantComment
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Gutted for you, was looking forward to an update here!
I know how it goes... I've parked the RS2 because I can't be done with dropping the sump on my driveway at the moment! Think I'd take a bit of time out, gather bits, then hit it when you get the motivation.AUDI - saving Dad's from minivans since 1994
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