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Nigel Tufnel Wannabe
 
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Join Date: Sep 2011
Location: Channahon, Il
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WTB:1986 944 Turbo Block

Just got the head off of my 1986 944 Turbo and found deep scratches (dare I say gouges!) in two of the cylinders. I don't think that they are repairable although I am going to have a Porsche Shop look at it. I'd rather find a solid used block with good cylinders that is reasonably priced and within 200 miles or so of Chicago. Anyone have a lead? Thanks!
Old 01-13-2012, 04:39 AM
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Old 01-13-2012, 05:03 AM
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tchudy, both US Chrome and Millennium Technologies are fairly near Chicago (in WI) and they can rebuild with either alusil, or nikasil process. I believe it runs around $800. Any local Porsche shop will have to source out this machining work anyway.

I found this same issue on my 86 turbo block. Turns out it's hard to find a non-scored turbo block. That being said, you can easily convert any late 2.5L NA block to a turbo by drilling and tapping for one oil outlet to the turbo.

I'm selling my 86 turbo block in Ohio..but it has scoring like yours although I know these shops can fix it. If you can afford the shop fees I'd go that route. Then you can keep your pistons, etc, and just put in new rings. A lot of the used blocks floating around may run and even look OK but they are often tapered and or scored.
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Old 01-13-2012, 10:53 AM
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How deep is too deep for the gouging. I am looking at a car with the engine out and you can feel the scratches with your fingernail but I wouldn't call them gouges more like decent scratches. How much is too much?
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Old 02-18-2012, 08:51 AM
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I have one if you still need one. I haven't looked at it in a while but I don't think there were any scratches at all. Let me know and I will get back to you.
Later.
Old 03-15-2012, 05:25 AM
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I have a couple of blocks if still looking
Old 03-16-2012, 01:15 AM
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Nigel Tufnel Wannabe
 
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My machine shop guy says he thinks the block is salvageable so I'll put the hunt for a replacement block on hold for now. Thanks for your responses.
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Old 03-16-2012, 08:44 AM
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is a turbo block and n/a block the same block? i have a friend in va whos selling one.
Old 06-08-2012, 04:57 AM
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I have not installed yet but I had similar. I sent pistons to swain and had the skirts coated as well as tops. Then block honed to accept them.

Maybe an option.
Old 06-08-2012, 08:11 AM
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