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-   -   Kolbenschmidt or Mahle Test? (http://forums.pelicanparts.com/911-engine-rebuilding-forum/318557-kolbenschmidt-mahle-test.html)

criv911 12-14-2006 06:08 AM

tech1, I'm considering a rebuild of my 3.2 as a result of worn valve guides. My questions about specs were in reference to if the cylinders were bored out and if the piston was in some way more or less expensive then what I may be using[98mm and 10.5 to 1 using twin plugs and the motronics]. In other words the cost you quoted was below what I had found. So I was hoping that you might share those aspects of your rebuild. Are you now telling us that the price you quoted is unavailable to all of us, if so then your post was irrelevant.

tech 1 12-14-2006 09:25 AM

I don't think the price that US chrome charges me is anything special.It was $972.00 to bore,plate,and hone to size.I'm sure if you call JE they can direct you one of their distributors that can give you a fair price.If the piston is what JE refers to as a shelfed piston(meaning it is in stock and on the shelf) they are usually less money.I have a friend of mine that owns another shop and he has been using CP pistons lately and is very happy with them.You might give them a try,they are orange county calif.and you can find them on the web.Hope this helps,Tim.

criv911 12-14-2006 08:46 PM

tech1, thank you very much that was helpful. I have not heard of CP pistons can you give me some info. I built a 2.5 motor some years back and used weisco with some success, but I haven't heard much about them lately.

tech 1 12-15-2006 07:22 PM

Hey CRIV911, I like wisecos too,however they are no longer located in calif. where I am,so I don't due as much business with them as I once did.So here's the scoop on CP pistons, 1902 McGraw ave. Irvine,Calif.92614. Phone (949) 567-9000. Let me know how it goes. Tim.

Flat Six, Inc. 12-20-2006 03:26 PM

I have excellent luck re-ringing alusil.

No hone, just scrape carbon from TDC.......and use Goetz rings only.

tech 1 12-20-2006 08:24 PM

Hey, I have good luck at reringing them too......but.......If you are changing pistons,and they require a closer tolerance, converting them to Nilasil is the best method I've found yet.However I have not tried any of the chinese cylinders yet.Tim.


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