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dexter1002

Gti6 Block

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dexter1002

Hi there,

 

Im after a bit of advice regarding my gti6 block, the engine seemed to have ran fine when i was using it, but i decided to strip it down and give it a freshen up as im boosting it.

 

When i removed the head i found score marks on number 1 cylinder wall (looks like it had dropped a valve at some point), would you say this is now un serviceable?

 

I bought another block which turned up yesterday and the cylinder walls are all pitted due to the pistons being sat in the same position for what looks like a long time.

 

Any help would be greatly appreciated... Thanks

post-22246-0-70096900-1488402444_thumb.jpg

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dcc

if you haven't bought pistons yet, maybe go 0.5mm overbore and reuse the block?

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dexter1002

Haven't got pistons, as i was going to use the originals, just new rings. It may be worth getting forged but a lot more cost involved unfortunately.

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petert

Now it's apart and you've seen it, you're mad not to fix it, given the relatively small amount of work and dollars required.

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mmt

Did you get the block honed?

 

I have a block with the same issue. Only mine seems a little bit worse.

 

How much Can a cylinder generally be honed if I Would want to use the old pistons. The guy at the machine shop suggested to hone My block 0.02 mm. I just doubt that that is enough to get rid of the pitted walls. Is there a general rule on maximum honing if one want to stay with original spec pistons.

 

Thanks.

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