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01-16-2019, 10:30 AM #1
What octane to run with 19cc heads
Just wondering what octane I should run with 19cc domes, engine is a 260 with stock deck heights, its has been ported to drag specs with geiger tec 19cc domes. Thanks for any input.
15.5 cobra 175 hp merc - sold
18 tahiti tiger O/B 200 hp merc - sold
19 STV euro - 2.5 merc DRAG
Seebold F1 tunnel - 2.0 F1/champ
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01-16-2019, 11:11 AM #2
c16
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nitro_rat, Dave Strong liked this post
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01-16-2019, 12:04 PM #3
mix with klotz bēnol for best smell if not best reliability...
Josh Peterson
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01-16-2019, 06:34 PM #45000 RPM
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Nascar Fuel 112 or 114
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01-16-2019, 06:56 PM #5
Not trying hijack but got sum ? How much cranking comp is that and what kinds hp is expected from stock heads? Will hp go up 10 ,20 ,30?
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01-16-2019, 09:32 PM #6
This kinda loaded question. But not know your exact style of boating. 110vp or 112 sunco is plenty. Timing set a 25 degrees You want have a problem if your squish is right
Nitrous is like a slut. u wanna hit it but you know there will be consequences.
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01-17-2019, 01:34 AM #7
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01-17-2019, 01:38 AM #8
Always start ahead of the game and work backwards to what the motor wants. It is far less expensive that way.
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01-17-2019, 06:33 AM #9Screaming And Flying!
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VP 112 is plenty of octane. Run your timing at 25 degrees
Erik Kiser
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Dave Strong liked this post
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01-17-2019, 06:45 AM #10
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01-17-2019, 06:47 AM #11
If your drag racing I’d also make sure your fuel system can support that if you haven’t already addressed that
Nitrous is like a slut. u wanna hit it but you know there will be consequences.
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nitro_rat liked this post
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01-17-2019, 09:30 AM #1215.5 cobra 175 hp merc - sold
18 tahiti tiger O/B 200 hp merc - sold
19 STV euro - 2.5 merc DRAG
Seebold F1 tunnel - 2.0 F1/champ
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01-17-2019, 09:35 AM #13
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01-17-2019, 09:46 AM #14
Vp doesn’t make 112. C12 Is the number. The standard vp110 will also be safe. I’d suggest a little more pump than the Bosch for drag
Nitrous is like a slut. u wanna hit it but you know there will be consequences.
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01-17-2019, 06:24 PM #15Screaming And Flying!
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I’m apparently not up on VP’s race gas offerings. I thought they had a basic 112 like Sunoco has. Either way 110-112 octane is enough
Erik Kiser
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