10:1 + turbo... tell me why/whynot
05-27-2011, 10:46 AM
#21
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A lower static compression ratio will allow you to add more total fuel and air into the cylinder without detonation. More fuel and air yields more power.
This is inconsequential if the detonation threshold of your chosen fuel is very high. e85 has such a high threshold for detonation that detonation is not a major consideration, but to anyone running pump gas it is very important.
This is inconsequential if the detonation threshold of your chosen fuel is very high. e85 has such a high threshold for detonation that detonation is not a major consideration, but to anyone running pump gas it is very important.
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05-27-2011, 11:02 AM
#22
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The stock 01+ VVT engines are 10:1....and I'm running 14psi w/2560 on pump with no problems....been doing so for years. When I had an engine failure last year, I was pleasantly surprised to find pretty much no signs on detonation when I pulled the head. To this day the failure is still a mystery and wasn't a catastrophic failure...no holed pistons, no pretzeled rods, no bent valves...it wasn't boost/tune/fuel related.
Once I get my hands on a squaretop IM, I'll be on the dyno and going for 290+rwhp on my stock engine...or whatever I can get from the 2560 at 16-17psi.
Once I get my hands on a squaretop IM, I'll be on the dyno and going for 290+rwhp on my stock engine...or whatever I can get from the 2560 at 16-17psi.
Output aside, an 8.5:1 motor is probably much safer and will live a longer life at the racetrack.
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05-27-2011, 12:05 PM
#25
B) I want a IM that is OE because I don't want to bother with cutting, welding and fitting. Not knocking the Honda hybrid IMs, I would do it, but I want to try the squaretop since it's a direct swap.
Honestly that argument is getting old Hussie. I know, as well as pretty much anyone on here with any sense, that there is a big difference between a track car and a street car. Honestly, most of the information posted here, and threads like this, pertain to street going steups...which 98% of us have. What works for years on the street is fine to discuss, which is what I am assuming this thread is aimed at. And if you don't think I'm hard on parts and break weird ****.....don't make me list of the oddball **** I've had to replace. As much as I wish the world was a racetrack, it simply isn't.
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05-27-2011, 12:53 PM
#26
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hustler is missing the argument where real race teams would run the ragged edge and just carry spare motors instead of worrying about how many race days it will last.
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