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Old 09-14-2009, 08:28 PM   #223
TitaniumTT
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Sean, nice catch on the timing. How is it that you have 577 miles and I have 2200? And in that time I pulled and half rebuilt a motor? You're slacking my friend

For the comp - I made 100-110 psi with those housings before the Goodyear fiasco. That day she made 90-100. After a trip to DGRR and back the comp climbed back to 113. I think she needs more miles, especially with used housings.

Pre-mix - I would listen to Idemitsu, actually I sorta am. I've spoken to a bunch of people who have followed thier rec's and have had nothing but great results. Personally, I'm running ~1/4oz per gal (502:1) in the tank and then the OMP injecting the same Idemitsu. It comes out to be ~1/2oz+ per gallon (256- :1) especially when I'm hard on it. Running @ 1 oz/gal (128:1) is a good thing to do if you're pretty spirited and not using the greatest pre-mix. 4oz/gal (32:1) is just silly IMHO. Marine O/B's run all day long variably between 50:1 and 200:1. I dare say that the loads that are placed on the main bearings, rod pins, and piston rings etc etc etc are FAR more than what an apex/side/corner seal will ever see. Personally if I wasn't using my setup, I would be @ Idemitsu's rec @ 256:1.

Also, think about how much sump oil that a rotary burns. These are pretty crude numbers but hear me out. A quart every 3000 miles is "normal," so lets just say that you're burning a qt every 1,000 miles. Ok, so you're using 32 oz of oil every 1000 miles. How much gas are you using? How about 15mpg? Ok, so in 1000 miles you're burning 66.67 gallons of gas. 66.67 gals = 8533 ozs. So that equates to 266:1 of SUMP oil on "average"

The funny thing is I didn't even plan that out by working numbers backwards.

If anything Sean, I would run 128:1 during the breakin. After breakin's and dyno's are done with, I would reduce it to 256:1 or thier rec'd 1/2 oz/gal.
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Last edited by TitaniumTT; 09-14-2009 at 08:32 PM. Reason: I'm a grammar Nazi & missed a capital letter
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