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Discussion Starter #1
I have a turbo teryx and was wondering if i should think about running av gas, any suggestions would be really appreciated.

Thanks
 

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How many #'s of boost are you running and what is your compression ratio? Also what altitude are you running at?
 

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Discussion Starter #3
How many #'s of boost are you running and what is your compression ratio? Also what altitude are you running at?
Running 15 maybe 20 compression is 8:1 and i am running at 3000 feet mainly
 

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Discussion Starter #5

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15 to 20Lbs, I do not think 100LL is even close to enough, you will probably need C12 or C14 and need to retard the timing a bunch. You could try it but if it starts to detonate it could cost ya $$$$$.

Is your machine up and running? If so what are you running now? Also what injectors are you running?

Casey
 

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Discussion Starter #7
15 to 20Lbs, I do not think 100LL is even close to enough, you will probably need C12 or C14 and need to retard the timing a bunch. You could try it but if it starts to detonate it could cost ya $$$$$.

Is your machine up and running? If so what are you running now? Also what injectors are you running?

Casey
I was running 11 pounds on stock engine with no timing so i dident thing it would really be a problem mcx has secondary injectors on top of facotry injectors so i got lots of fuel
 

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Another thing you could consider is water/methanol injection, some people prefer this over race fuel but it also adds another tank and system to maintain. Not sure what the stock rods will take you might want to upgrade to aftermarket rods. Also check with MCX to verify their turbo is still in its map @ +11 Lbs. These V Twins require a lot of air @ the RPM's we spin. You might have to upgrade the turbo if you want to run that much boost. Also you should upgrade to forged pistons (if you haven’t already).

Casey
 

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To answer your original question, I would recommend 100LL @ anything over 10LBS. Might be over kill but would be cheaper than destroying a motor.
 

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Discussion Starter #10
To answer your original question, I would recommend 100LL @ anything over 10LBS. Might be over kill but would be cheaper than destroying a motor.
well most of mcx kit run 11 pounds on stock engines on pump gas i have been running that for over 800km and i have upgraded the rods already. I think i am going to just run it at 15pounds with av gas to be safe cant see that being to big of deal
 

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Let us know how it works, make sure you watch for signs of detonation. It will kill cast pistions fast.

Casey
 

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No AV Gas! :badidea: Aviation fuel has additives (such as a form of antifreeze) that is no good. It's tempting due to the fact that it's usually a little cheaper than race fuel.
If you've done all that work .. spend the few extra bucks and buy the right gas. You can usually find 100ish octane low-lead on a pump very easily
 
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