Alusil rings

[87 clubsport]

Hi is anyone know where to buy alusil piston rings parts no 93019898601, for 3.2 .thanks

[Henry Schmidt]

I have never found a source for these rings. That is one of the reasons we never reuse Alusil pistons and cylinders.

[87 clubsport]

Thanks Henry, I found the part# in parts and technical reference catalog 911 1974-1989, on page 17 found part#93019898601 for KS piston, thats why I think if I found this rings in theory I can rering alusil. btw any one knows DEVES part#1980B is ok for ks piston?

[Henry Schmidt]

Originally Posted by 87 clubsport

Thanks Henry, I found the part# in parts and technical reference catalog 911 1974-1989, on page 17 found part#93019898601 for KS piston, thats why I think if I found this rings in theory I can rering alusil. btw any one knows DEVES part#1980B is ok for ks piston?

Your theory is sound, finding the rings is the issue.
As for Deves rings: I wouldn't use Deves rings in my lawn mower. I have never seen Deves rings work well in anything.

[87 clubsport]

very good info, thanks again Henry

[GBStu]

FYI,

I rebuilt my 3.0 due to a broken stud a couple of years ago and re-ringed my Alusil's with Goetz rings. It never did have the compression it should have and always burnt oil at start up. A couple of months ago, at my last DE event of the year, under hard accel it started to burnoil. The compression’s ware 80-100psi....the motor is currently apart in my garage awaiting a new set of 98mm Nikisil cylinders and JE pistons.
Stu
PS, the motor had about 95K on it before the rebuild and 10K on the re-ring Alusil's

[Aurel]

Originally Posted by GBStu

FYI,

I rebuilt my 3.0 due to a broken stud a couple of years ago and re-ringed my Alusil's with Goetz rings. It never did have the compression it should have and always burnt oil at start up. A couple of months ago, at my last DE event of the year, under hard accel it started to burnoil. The compression’s ware 80-100psi....the motor is currently apart in my garage awaiting a new set of 98mm Nikisil cylinders and JE pistons.
Stu
PS, the motor had about 95K on it before the rebuild and 10K on the re-ring Alusil's

Interesting. How did you prepare the cylinders surface, and how did you do the break-in?
I also rerung my 3.0L Alusils with Goetz rings and got good results, so far (3,000+ miles).

[GBStu]

I used Sunnen AN-30 paste and a regular hone with cotton shop rags over the three grinding sections and I ran it in quite hard.

Compression was about 145psi after run in and it degraded to 80 psi after my 12th DE in two years (about 8000mls).

Hope this helps, Stu

[Aurel]

Originally Posted by GBStu

I used Sunnen AN-30 paste and a regular hone with cotton shop rags over the three grinding sections and I ran it in quite hard.

Compression was about 145psi after run in and it degraded to 80 psi after my 12th DE in two years (about 8000mls).

Hope this helps, Stu

My guess would be that you took too much off the alusil coating during the prep work, and what was left of it wore down to nothing after two years. But with only 3,000 miles on mine, I cannot say yet that I did any better...time will tell .

Aurel