I have been chasing a problem with my TT engine for a few weeks now - started as a knock on 6, so I stripped the bottom end out with the car on the ramp to investigate

 

Sure enough, No 6 big end bearing was shot... even though it was a very "new" ACL and the rest were fine. I concluded the crank was scored and needed a fuller investigation, so out came the box, and everything else to pull the crank.

 

Took it to my engine builder who inspected and concluded that the journals were still in limits and after a polish could be used.

 

Yet the mystery of why no 6 was shot when the rest were fine bugged me.

 

After some really careful inspection I have concluded that at some point before I owned her, a mystery bolt must have found its way into the bottom end, been clunked by the con rod, hit the bottom of the no 6 cylinder (there is a witness mark of threads "stamped" into the wall at the very bottom of the bore - looks like m6) and bent the cheek of the conrod making the big end slightly oval and pinching the bearing causing massive heat and premature wear.

 

I have been trying to get this car on the road for so so long, and done so much to her, to now find this is really depressing.. I don't know if I can trust anything about the internals at this point. Plus I get smoke on the over run which is suggesting valve seals - even more work...

 

I am so fed up at this point.

 

My options seem to be:

 

strip out the top of the engine, remove piston to get the rod and cap to a machine shop for boring or replacing and change the valve stem seals - which will take weeks of weekends.

 

or

 

does any one have a half reasonable manual TT engine that I can quickly stick in to get me on the road, and then I can build up a really decent engine in slower time to stick in later

 

or

 

take up cross stich and forget about it

My wife does cross stitch, I bet she can stitch a mean looking engine for you, lol

 

Sorry about the issues your having but press on and don't get too disheartened about it.

Thats always the hard choice to make and has to be financially viable, sure you could stick a secondhand engine in there and it will be fine or you could still end up with problems.

If you can get another engine cheap enough, its worth doing and as you say you will have time to rebuild your old one.

I would be inclined to buy another zed cheap like one recently sold on ebay, engine was good, body was shot and probably cost you as much or less as another engine.

Bigh on here has a decent engine for sale,usually youll find the furthest bearing away or near as dam it is the first to fail.

how about my car... engine is a beast (Jimmer, Jeff & Noz can confirm) but needs new torbos...

 

you could strip and sell the rest (or use whatever you wanted), it currently has 12 months MOT & 4 months Tax.

What's it like to get sump off in situ x member dropping etc ?

 

 

 

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