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Author Topic: Watchout using VP 110 with 927  (Read 1313 times)

Offline RUn2it

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Re: Watchout using VP 110 with 927
« on: March 21, 2019, 09:38:09 pm »
Harry Klemm use to recommend avgas for 2 strokes, then backed off as he discovered the avgas has no heavy end/ long chain/high aromatics and has a high paraffin content. I tried avgas/premium pump 50/50 in the XP Seadoo mod as I couldn't find race fuel, no matter how rich or lean I set it the plugs were always gray. I didn't have heat or deto problems but it was slow accelerating, didn't launch hard as it would with race fuel. It felt like it had pump gas with octane boost, all octane boost does is slow the burn, retard the flame front so it doesn't deto. Sure, it doesn't deto but you don't get your $ worth of all the high $ parts and work you put into the engine, and once you ride something really quick anything less is ... boring x boring. Oh yeah, the R+M/2 is actually the AKI of pump gas, the anti-knock index. If you get gas at AMPM I'll tell you how to spend more for gas per gal and save you $ at the same time, Check your mileage with a tank of whatever "octane" you use from AMPM then go to Chevron and get the same 87 or 89 as AMPM. I've been told by people that I said this to that they got between 30 and over 100 miles more per tank. And 1 of the persons I told this to was 1 of the fastest Trophy truck drivers and had the most wins and championships in the Mickey Thompson stadium series back when. He says when he goes by an AMPM now he want's to yell at the customers "YOU MORONS" LMAO!

PS AVGAS 100LL and non aviation 100LL don't use the same method for calculating the "octane" rating

 

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