replated, maybe? I was wondering the same thing.

Read the entire thread. Alusils are not coated.

I am quite familiar with alusil technology. I have never heard of re-glazing, I would like to find out exactly what 1fastredsc had done.

Here is some of the latest that I have heard from the gurus.
I called and talked to Henry about my alusils and he said that the main problem with them is that you can not just use any rings with them. In his experience he said that the dealer was the only one that typically had them and that they were around $500 a set (Yikes!). A real wise man who is very open with his experience on the phone as well as on line. Thanks Henry.

I then talked to the "old timer" in Canada, Larry Taylor and he was such a blast to talk to. Real funny guy that is also very wise. He had not heard of alusil referred to as such. He called it T-390 hypereutechtic alluminum sillicone. He explaned the art of "lapping" in the cylinders via the methods revieled with in this thread and said that he had been doing it for years. He also mentioned the ferrite coating that is on the alusil pistons. He did differ, however, on the rings. He said that you have to use chrome rings (I may have mixed up this point, someone will chime in) and that he could get them for me for my set. I will be communicating with Larry further because he also knows a lot and gives it freely.

What I would like to find out about is the whole grape hone thing. What has happened on that front of the revolution.

I hope that this contributes something to this epic thread.
-Mike

Larry did my cylinders and suplied tthe rings. I believe I still have the boxes if anyone wants to know part no.'s.

I used the Goetze rings with success.

Paul,
I want to know the part numbers!
Thanks,
Mike

I used Goetze rings as well! 500miles on the rebuild so far and shes running strong.

Pelican Part # H-103-963-00

Bump - PBH, did you find your part numbers? that would be good to record here.

Goetze Part No.

2.7L,150/175 PS
911/S 08/74-07/77
90x1.5+1,75+4 mm Std.


Sold as Federal Mogul 08-319800-10.

Please do not come back and tell me these are wrong....

so those are chrome rings, right?

I'm sorry i don't know the proper terminology for it. It's that process where the walls are scuffed and then layered with that paste that some of these gentlemen here have spoke of. I didn't do it though, i sent them out to be done.
EDIT: I also used Goetze rings, cost me about 220 for the set. And i cross referenced the number on my PET and it said they are rings for the late model sc's and carreras.

No idea, I just trusted Larry....

ok, thanks for the response, PBH.

Here is more info:
I just called MotorMeister as they advertize that they sell rings for the alusil cylinder. The guy there said that you can only use Deves rings with alusils that have been done with the Sunnen method. He said that you can only use Goetze with "like new" cylinders. I asked why and he said that the surface would not be perfectly "flat"...what? He then said that you need to hhave your pistons treated due to the coating that we have already discussed here. This is the first time that I have heard this, has anyone else? They offer the complete service with pistons, cylinders, and rings for $495. Does this extra factor seem to make sense? I also tried to find out what the rings were made of, like chrome, and the guy would not tell me. He just said that "you need to ues Deves, it doesnt matter what they are made of."
Anyone have anymore info on this?
Thanks,
Mike

Sunnen is the name of a company that makes machining equipment, lapping is the name of the procedure, and most of us have used goetze rings with no problems. I think the "scientists" at motormeister are pulling your leg dude.

"I think the "scientists" at motormeister are pulling your leg dude."

I agree! I talked to Larry Taylor in Canada again yesterday as well. I like talking to him because he looks at this stuff not only from a machinist stand point, but from a metalurgist stand point as well. He said that you must use chrome plated (at least) with the alusil (T-390) as softer metals will not stand up to the silicon. Consequently, Larry uses the Goetze rings as, PBH stated. Larry said that he didn't particularly care for the one piece oil rings that come with the Goetze and would like to find a three piece ring to use as it would offer better oil control. Oddly enough, my rings were the three piece type. The rings on my engine looked like the ones on my TIV engine...!? I have had luck with my engine in that the DAPO upgraded some things, but didn't seem to assemble it very well...all of the head nuts were like 5lb of torque.
Larry has a toll free number if you all want to call him: 866-859-3293

Are the rings that we are using for our alusils, the Goetze, the same ones used in the nikasil?

hmm... Motormeister vs a guy that knows what he's doing? hmm.... how I can I possibly decide? Oh the agony of this decision....

"hmm... Motormeister vs a guy that knows what he's doing? hmm.... how I can I possibly decide? Oh the agony of this decision...."

Exactly. I just wanted to post all of the info that I have gathered so that others will have a chance to steer away from the BS and make an informed decision. this post was very timely for me as I am doing my engine now. It is amazing how many different ideas about the alusil there still are. The guy at MotorMeister at first said that the cylinder was made of all aluminum untill I schooled him with the info I learned on this thread....still tried to talk me into the extra services though..

See first few pages on this thread for more info regarding Goetze rings. I work with the guy responsible for Goetze ring specs & put my faith in what he said in terms of being able to re-ring Alusils (plus all the other great info which came out of this thread). I've now covered 1600 miles since rebuild and it's running better than ever, with virtually no oil consumption...