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I think that Mazdatrix or Racingbeat cataloges or manuals use the solution of omitting the gasket, machining the indent for the o-ring a bit deeper and using a thicker o-ring. This was also covered in Tracy's conversion manual.
I used a wood 3/4' foster bit (if I remember correctly) (yeah, I'm cheap).
If you clean the mating surfaces of the front cover and iron with alcohol and use gray RTV, I doubt you'll see a leak there (let it sit for 1/2 hour before you tighten the bolts completely. On the other hand you may have problems getting the cover off the next time if you clean it with alcohol before applying the RTV.
Good luck.
Finn
On 8/26/2012 10:11 AM, Chris Barber wrote:
My oil pressure has dropped again. I am jumping to the conclusion it is that pesky front cover O-ring. I know I was meticulous with installing it last time. While it may be something else, I doubt it. I had the pressure valve fall into the pan a couple of years ago and it is now safety wired in. Perhaps it is the oil pump but it seems so simple and not prone to failure.
So, to make this more than a vent, as I know mostly how to address this....contrary to the evidence that I am having to screw with it again, is there any words of wisdom y'all would care to share. Since I will at least have the front cover off (should be able to do do with engine on the plane) would this be a good time to replace the oil pump. It has not been replaced in the past do it is many years old with an unknown number of miles. Is there a "better" oil pump out there than the turbo version offered by Mazdatrix that I should ponder?
I may have the oil ring and plastic retaining ring already if I can find them. Just gotta find the time to crack into it. Then to continue my turbo diagnosis. Great power without intercooler (even though I found no restriction, but it is a super cheap intercooler from eBay) and blow off valve or even N/A. Obvious limited breathing with the cheap intercooler and blow off valve
TIA.
Chris Barber
Houston
Sent from my iPhone 4
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