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Posted by: JStroud Sep 12 2014, 08:36 AM

Started tearing down my 2.7 for a rebuild, the cylinders are a combination of mahle and KS. they're also Alusil and not in very good shape.

So, I'm looking for a GOOD used set, with nickasil cylinders and matched CIS pistons, or a reasonably priced new set.
2.7 with CIS.

Anyone got some laying around?

Thanks,
Jeff

Posted by: Luke M Sep 12 2014, 09:14 AM

Hi Jeff,

I have some 2.7 cis p/c's laying around.
I'll dig them out later today and look them over.
I'll take some pics of them too.
If you want pm me on this.

Posted by: koozy Sep 12 2014, 05:14 PM

I also think I have a known good set. Let me know if you need to consider a second set and I will pull them for photos.

Posted by: JStroud Sep 13 2014, 08:45 AM

Thanks for the replies, Edited the first post, looking for a complete set with nickasil cylinders and matching CIS pistons.

My understanding is the alusil cylinders can't be reused, or honed.

Thanks,
Jeff

Posted by: Mark Henry Sep 13 2014, 06:39 PM

QUOTE(JStroud @ Sep 13 2014, 10:45 AM)

Posted by: Peashooter Sep 19 2014, 02:43 PM

I have a set of P/C's for a 2.7 CIS. They are in great shape. PM me for photos if interested. I put a euro set in my engine.

Posted by: rick 918-S Sep 19 2014, 05:29 PM

I had a 928 block bored out from 4.7 to 5.0. The block is solid alusil. The trick is the pistons have to be made to run in alusil bores or they will gall the cylinders. Pistons for alusil bored have a special iron coating as I understand. (or some kind of surface treatment) My only option was 32 valve 928 pistons notched for 16 valve heads. Now the 911 may have piston options the 928 guys don't have due to popularity.

Posted by: flmont Sep 19 2014, 09:12 PM

I rebuilt a 3.0 a few years back and they had the Alusil P/C's,...I did the ball honing method finished with a lite scotch brite pad ,...the rings must be for the Alusil's Cyl. and my engine and had great comp. and leak dwn numbers,... FM

Posted by: Peashooter Sep 22 2014, 07:53 AM

Pics sent!

Posted by: JStroud Sep 22 2014, 06:30 PM

QUOTE(Peashooter @ Sep 22 2014, 06:53 AM)

Posted by: rudedude Sep 24 2014, 07:44 AM

The alusil cylinders can be nikasil treated and honed for "normal" pistons.
Ask Len Hoffman.

Posted by: JStroud Sep 24 2014, 11:11 AM

I have found that out in my research, however I'm running CIS, I need CIS pistons.
Looks like I found a set, search is over. Thanks Bill.


Jeff