Pettit Rebuilds

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09-19-2005, 09:13 AM

#21

sweet7

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Join Date: Jun 2003

Location: Stacked outside you're trailer door

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I think I'm probably gonna do 3mm seals. It can't hurt.....can it?

09-19-2005, 09:44 PM

#22

Rob x-7

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Location: Amityville, New York

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Quote:

Originally Posted by The Ultimate 7' post='760242' date='Sep 19 2005, 05:12 AM

In a NA application 3mm seals (with proper engine maintenance) will last over 200,000 miles. GSl-SE baby.

I got 150k+ on my stock NA and have no reason to belive it would not make it past 200k no problem, I dont really see any reason for 3mm seals on a NA engine?

09-25-2005, 05:49 PM

#23

The Ultimate 7

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Join Date: Oct 2003

Posts: 69

Quote:

Originally Posted by Rob x-7' post='760489' date='Sep 19 2005, 07:44 PM

I got 150k+ on my stock NA and have no reason to belive it would not make it past 200k no problem, I dont really see any reason for 3mm seals on a NA engine?

Truthfully they are over kill however, I think the key to long life is the structurally more stable 2 piece design. I hate the 3 piece seals. Once the top piece gets thin with high mileage, they have a tendency to flip out of the rotor grooves. Plus they carbon freeze easier than the 2 piece. Also the slightest detonation destroys them on higher mileage situations. My NA 91 vert had a rebuilt Mazda reman engine when I bought. The car only had 70k on it with 10k on the rebuild. The rear rotor had no compression. NA rotary's aren't suppose to blow apex seals that early. The car now has 134k and the rear seals are blown again. Car had perfect maintenance too. No oil leaks or over heating with 12k fuel filter and spark plug changes.