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| Registered Join Date: Jul 2000 Location: Australia 
					Posts: 38
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				3.0sc Re-ring advice
			 
			Guys, I'm addressing broken head studs that were discovered when my car was PPI's by a prospective purchaser. Engine oil use is not excessive by any means and engine compression is good apart from teh cylinder with the broken head stud. It was my intention to change the rings (114,000 miles) while we are there. I have the KS pistons. I was told that putting in new rings would take a long time to bed-inn because of the alusil liners. Am I wasting my time? Many thanks Jim | ||
|  02-04-2008, 02:02 AM | 
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| Registered Join Date: Mar 2006 Location: Philadelphia Pa 
					Posts: 1,275
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			There is a thread that Wayne wrote in reguards to Alusil liners, the bottom line was that they can't be re-ringed. I did however get a very positive responce from Charles @ LNengineering that was about the possibility of replating the alusil cylinder with Nikasil or Ni-com so it could be re-ringed I am currently trying this idea as I just sent a set out. I will get back to you with the results in the mean time give Charles a call
		 
				__________________ 1997 911 Carrera Cabriolet 66 912, 67 912 Outlaw 65 Ac Cobra reproduction 2012 Audi A8L 1999 Ferrari 360 Modena | ||
|  02-04-2008, 03:31 AM | 
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			Any idea on the cost of replating alusil cyls?
		 
				__________________ 1983 911 SC 2015 Volks GTI 1991 Volks GTI 2011 Nissan Juke 1992 Nissan NX 2000 | ||
|  02-04-2008, 12:55 PM | 
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| Registered Join Date: Oct 2001 Location: Momence, IL 60954 
					Posts: 1,911
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			I've also successfully machined the tops of the ce-grooved to a step on the tops of the cylinders to take a copper gasket which then also allows the cylinder to be taken out to 98mm. Cost is roughly the cost of a set of QSC cylinders, but then at least you are starting with a nice German casting and the same plating we use on the Nickies cylinders we manufacture.
		 
				__________________ Charles Navarro President, LN Engineering and Bilt Racing Service http://www.LNengineering.com Home of Nickies, IMS Retrofit, and IMS Solution | ||
|  02-04-2008, 03:45 PM | 
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| Registered Join Date: May 2003 
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			I've personally re-ringed one set of Alusils and re-used the old rings on 3 other race engines. Had no problem with any of them. Your mileage is not excessive. I'd measure your ring land clearance and ring end gaps to see if you can or should re-ring. I will probably stay with Alusil from now on because of the price.  -Andy 
				__________________ 72 Carrera RS replica, Spec 911 racer | ||
|  02-04-2008, 06:32 PM | 
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| Registered Join Date: Apr 2006 Location: Newcastle, WA 
					Posts: 966
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			I read that Superman on this board re-ringed his alusils without problem. John Walker knows that car very well and speaks very highly of the engine. But I have also read that that is a bit risky.
		 
				__________________ James 1969 911E Slate Grey 1981 911SC Wine Red 1997 911C4S Ocean Blue | ||
|  02-04-2008, 09:01 PM | 
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| Registered Join Date: Mar 2006 Location: fair oaks, CA 
					Posts: 193
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			What do you tell the 944 and 928 guys?  Throw away your block because it's Alusil.  I think the Alusil cylinders get a bad rap.  An engine builder whose bread and butter and is putting his name on the line might not want to gamble on Alusil,... it depends on your level of expertise, financial status and if you are willing to take the cance on new rings or reuse the old ones. Sorry, I just had to give a differing view. I have had good luck reringing Alusil 944 motors, not 911 cylinders, so take it for what its worth. 
				__________________ '82 911 previous: '86 951 '72 914 | ||
|  02-05-2008, 10:02 AM | 
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				Re-ring Alusil
			 
			I re-ringed my Alusil cylinders on my 3.2 with great success.  My mechanic, with 20 plus years of experience building Porsche engines, says he has done it many times without problems.  This is assuming the cylinders and piston are in-spec. Mark 
				__________________ 1987 Carrera MoTec 3.8L Transplant, 993TT Brakes 2006 M3 Competition Package 2007 997 GT3 - SOLD | ||
|  02-05-2008, 10:15 AM | 
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| Registered Join Date: Jul 2000 Location: Australia 
					Posts: 38
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			Thanks to all for the replies. regards Jim | ||
|  02-05-2008, 09:23 PM | 
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| Registered Join Date: Jul 2003 Location: Valencia Pa. 
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			I have also done it two different times on a 3 litres, with fairly good results.. The latter of the two let out a littlle larger belch of smoke upon startup than I liked, but oil consumption seemed to be normal. I think that the general consensus is that it is a crapshoot. If if is your own motor, I guess all that you loose is  your time, and a gasket set, if it does not work. Good luck .  Fred 
				__________________ No left turn un stoned | ||
|  02-06-2008, 03:23 PM | 
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				__________________ 1983 911 SC 2015 Volks GTI 1991 Volks GTI 2011 Nissan Juke 1992 Nissan NX 2000 | ||
|  02-06-2008, 03:49 PM | 
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			I too re-ringed my 3.0 Alusil cylinders and they have performed well with minimal oi consumption.   Rick | ||
|  02-06-2008, 06:20 PM | 
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			If one does re-ring the pistons using the KS cylinders, would you use  the stock rings?  And would that be the standard ring sets sold her by our host or the rings JE Pistons sells? Would like to know thoughts about this. Thanks. 
				__________________ Ed Paquette 1983 911SC 1987 944S 1987 944 Manual (Donated to the Nat. Kidney Foundation) 1987 944 Automatic (Recently sold to another Pelican) | ||
|  02-06-2008, 08:35 PM | 
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| Registered Join Date: May 2003 
					Posts: 3,346
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			I use stock Goetz rings. I know they are available at EBS, but are probably available at Pelican. They seem to be the same rings for Alusil and Nickasil.  -Andy 
				__________________ 72 Carrera RS replica, Spec 911 racer | ||
|  02-07-2008, 10:02 AM | 
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			Thanks, Andy.  Sounds as if you have had good luck with the Alusil cylinders too.  I am thinking about a purchase for a 3.0 so I'm on the fence right now with the decision.
		 
				__________________ Ed Paquette 1983 911SC 1987 944S 1987 944 Manual (Donated to the Nat. Kidney Foundation) 1987 944 Automatic (Recently sold to another Pelican) | ||
|  02-07-2008, 04:02 PM | 
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			If you are interested in a really good read on Alusils and re-ringing.  Check out this link.  It goes on forever but there is a lot of good information. I used the Goetz rings as well. Rick Re-ring Alusils? | ||
|  02-10-2008, 05:29 AM | 
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			Thanks, Rick...I will start reading that thread.   
				__________________ Ed Paquette 1983 911SC 1987 944S 1987 944 Manual (Donated to the Nat. Kidney Foundation) 1987 944 Automatic (Recently sold to another Pelican) | ||
|  02-12-2008, 04:25 PM | 
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