stock 1998 525sc
01-13-2003, 07:11 AM
#2
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26sonic,
The manufacturer clearly states that they require 92 octane... The initial compression is only 7.5:1, however, if you start spinning them it starts to increase that number and hence the need for 92...
Tnx, Karl
The manufacturer clearly states that they require 92 octane... The initial compression is only 7.5:1, however, if you start spinning them it starts to increase that number and hence the need for 92...
Tnx, Karl
01-13-2003, 05:11 PM
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Tony......for you it don't mater. When do you ever put gas in a boat 
LOL
Just kidding LOL
Yes 92 is absolutely necessary. It is very similar to my engine but I am running higher compression and a deferent cam. The best thing to do with that engine is to either install a intercooler or rip off the 177 blower and install a 6:71 . The 177 works great and does the job but they produces a ton of heat that can lead towards pre detonation. So The higher octane fuel the better. I always keep octane additive with me if I have to re fuel with 89 octane. I went with the 177 because I wanted to keep the motor under the hatch and I found a great deal on it I couldn't pass on. Now I went and got the intercooler I Have to cut the hatch anyway. If I had to build the engine again I would of just went with a larger blower from the start.
I hope all is well , I haven't seen you guys in a while , Let me know if you guys want to go to John's for his super bowl party.
Paul
LOL Just kidding LOL
Yes 92 is absolutely necessary. It is very similar to my engine but I am running higher compression and a deferent cam. The best thing to do with that engine is to either install a intercooler or rip off the 177 blower and install a 6:71 . The 177 works great and does the job but they produces a ton of heat that can lead towards pre detonation. So The higher octane fuel the better. I always keep octane additive with me if I have to re fuel with 89 octane. I went with the 177 because I wanted to keep the motor under the hatch and I found a great deal on it I couldn't pass on. Now I went and got the intercooler I Have to cut the hatch anyway. If I had to build the engine again I would of just went with a larger blower from the start.
I hope all is well , I haven't seen you guys in a while , Let me know if you guys want to go to John's for his super bowl party.
Paul
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