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BillS: iron heads won't take as much boost as aluminium before knocking. And I'm not so sure a fuel cut on your motor when it starts to knock is a good idea under boost. That's a good way to start knocking more and melt pistons!
sigpicNew 2010 project (click image)
1994 3100 BERETTA. 200,000+ miles 16.0 1/4 mile when stock. Now ???
Original L82 Longblock with LA1, LX9, LX5 parts
Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.
sigpicHow to make High performance Emissions:
A "true" High flow converter, straight pipe.
Low/No flow EGR valve, block off plate.
Carbon canister and purge valve mod, place in large 30 Gallon can, cover, and place curbside, the city will do the rest.
PCV valve and vent tube, reroute to exhaust to dump where it belongs, on the ground. Or add breathers and let it all free.
Lowering the CR for boost is old school thinking and is a thing of the past.
That all depends on the amount of boost you want to run. If he is at 10.5:1 compression, then I wouldn't recommend any thing over 5 lbs of boost on a street vehicle.
BillS: iron heads won't take as much boost as aluminium before knocking. And I'm not so sure a fuel cut on your motor when it starts to knock is a good idea under boost. That's a good way to start knocking more and melt pistons!
When the injectors shut down, you don't get a lean run condition (which would trash pistons) you get a no run condition - the fire goes out and doesn't come on again until you lift off. Wondered what the heck had happened first time I hit that, believe me! Miller Woods used that system and it seems to work just fine - not that you are bouncing of the limit all the time.
That all depends on the amount of boost you want to run. If he is at 10.5:1 compression, then I wouldn't recommend any thing over 5 lbs of boost on a street vehicle.
I'm willing to risk as high PSI as I can get as long as the tune is within a safe territory. There really is no magic number seeing how every engine takes on detonation differently.
new issue.. my engine bay is smaller than i thought.. i dont even think its possable to mount one where the AC goes.. took a few measurements to compare to different chargers
sigpic 88 Beretta CL- 13.641@102.76mph (rwd LS1/t56 conversion in progress)
77 Celica GT- 3400/3500 swap in progress (engine from the beretta)
Talk to mars_man and see if he can get you some pics of his setup.
sigpicNew 2010 project (click image)
1994 3100 BERETTA. 200,000+ miles 16.0 1/4 mile when stock. Now ???
Original L82 Longblock with LA1, LX9, LX5 parts
Manifold-back 2.5" SS Mandrel Exhaust. Hardware is SS too.
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