Total seal rings do they work in Nikasil cyl?

[slow car]

Hi i am refreshing a 3.4 with custom JE 12.5:1 com the rings that were sent are Total seal. Double top ring .
Are they the best for the job?
Race use only.
Do they bed in on use Mahle Cyl ?
Honing tips?
Thanks

[Walt Fricke]

I've used total seal rings with iron cylinders, and also with aluminum ones Nikasiled. I liked them, though I can't claim to have quantified any performance advantage. Leakdowns were always around zero.

I'd contact the Total Seal folks - they can tell you if these rings are right for Nikasil. Or contact J&E. I suspect Total Seal has more than one type of ring material, depending on the cylinder. Their special deal is the two piece ring which doesn't leave a gap.

[slow car]

Thanks Walt, I have just sent Total Seal a email.

[faapgar]

Total Seal rings are fine with Nicasil.Usually the end gaps are filed for fitment.Fred

[Jeff Alton]

We used their ring packs in Nicasil plated cylinders, good results. The set up we used had a gapless Second ring.

They were super friendly and responsive to our inquiries.

Cheers

[slow car]

I Got a reply and i am amazed how much end gap these rings need .026" for 98 mm Cyl WOW.
Looking forward to the end results.
Yes Total Seal were very friendly and quick to respond. great to see.

[VFR750]

Also used total seal rings on nikasil plated alusil cylinders with JE pistons. Also used the gapless, 2-piece second ring. 6000+ miles and measured 1-2% leak-down

I set my rings to the Porsche manual gaps. 0.008-0.016”. Much smaller gap than recommended by JE.

You may want to question 0.026” gap as that is close to a worn out ring according to Porsche

Others can comment on this, but my logic is air cooled cylinders grow a lot more than water cooled, hence the need for tighter gaps. And you don’t zing a cold engine. I did what Porsche recommended. Worked.