How long before KB eats my block
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From: longisland,ny
Originally posted by easterisland
My engine blew with a 3 lb lower pulley and a JL tuned diable chip(for the 3lb lower) back in october 2001. Does that means he was a bad tuner?
My engine blew with a 3 lb lower pulley and a JL tuned diable chip(for the 3lb lower) back in october 2001. Does that means he was a bad tuner?
No.... But IMO if your going to put a different blower on i would deff want some dyno time.....
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From: Stinkin Joisey
Originally posted by D Davis
I think what he's talking about, is how forcefull the boost comes on, eaton builds up , KB comes on all at once. so the Instant hit is more stressfull than the gradual. or something like that.
I think what he's talking about, is how forcefull the boost comes on, eaton builds up , KB comes on all at once. so the Instant hit is more stressfull than the gradual. or something like that.
**ding-ding-ding**
we have a winner
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From: Paradise
3800 miles, KB - 16lbs boost, 14 degrees timing, a/f levels at 12.1, shift point 5200 rpm, 93 octane, 496/562 and she is running strong.
BTW, my KB was installed at 500 miles. Unless she goes boom on the track I plan on a long and healthy life until the day I start to build the lower. Hopefully she will last till then!
D-Day
BTW, my KB was installed at 500 miles. Unless she goes boom on the track I plan on a long and healthy life until the day I start to build the lower. Hopefully she will last till then!
D-Day
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From: Paradise
Casper Lightning
3.20" reichard up top (2lb) with Metco idler set up and a JLP 9" or (6lb) on the bottom, gator belt.
Revolutions single file chip (Diablo), Willie Figueroa out of Miami is my tuner (he works at the Miami head office for Diablo)
I am extremely happy with my set up especially considering the power that I am generating on a conservative tune. Oh, and those power numbers were taken in 90 degree Florida heat. My bet is I am over 500 hp in the 50's and 60's cooler weather down here. I have to be cautious in the cooler weather, any thing under 60 degrees and the boost gauge is reading 18lbs even though I am set up for 16lbs.
D-Day
3.20" reichard up top (2lb) with Metco idler set up and a JLP 9" or (6lb) on the bottom, gator belt.
Revolutions single file chip (Diablo), Willie Figueroa out of Miami is my tuner (he works at the Miami head office for Diablo)
I am extremely happy with my set up especially considering the power that I am generating on a conservative tune. Oh, and those power numbers were taken in 90 degree Florida heat. My bet is I am over 500 hp in the 50's and 60's cooler weather down here. I have to be cautious in the cooler weather, any thing under 60 degrees and the boost gauge is reading 18lbs even though I am set up for 16lbs.
D-Day
Last edited by Dan_03Lightning; Jan 14, 2004 at 03:35 PM.
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From: Fl/Tenn
RDY2RACE, 01BlackL and grinomyte all make very good points. The engine doesn't care if the boost comes from an Eaton, a twin screw, turbo or procharger...the way boost 'loads' a motor or how 'forcefull' the boost comes in has no effect on engine life. Detonation and RPM kill engines, not boost. You can run 30 psi and not throw a rod, assuming the RPM's are kept low and it never detonates. Compressive loads on a conrod from boost (or nitrous) don't really tax a conrod whatsoever, its Tensile loads (RPM). When the crank journal snaps around, the cap screws stretch away from the rod cap and the bearing tries to spin in the big end of the conrod. This increases exponentially with RPM. Why do you think all quality rods are rated by RPM potential and not HP? This is also partly the reason you can run 50+ psi on a stock diesel engine, because they never see more than 2500 RPM or so. Your KB on a stock block will last forever with a good tune, just keep it below 5k or so.
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From: Tallahassee, FL
A more efficient blower compresses more air at the same PSI as a less efficient blower. This increased cylinder pressure (because of more air) is what destroys blocks because it is making more power.
it is really pretty simple, more air, more power, more cylinder pressure at the same boost level.
RPM affects it because the higher the RPM the higher the pressure as well as stated in the post above.
it is really pretty simple, more air, more power, more cylinder pressure at the same boost level.
RPM affects it because the higher the RPM the higher the pressure as well as stated in the post above.
Last edited by f150intally; Jan 14, 2004 at 05:23 PM.
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From: DETROIT, (formerly Eaton County, Michigan)
Originally posted by f150intally
A more efficient blower compresses more air at the same PSI as a less efficient blower. This increased cylinder pressure (because of more air) is what destroys blocks because it is making more power.
it is really pretty simple, more air, more power, more cylinder pressure at the same boost level.
RPM affects it because the higher the RPM the higher the pressure as well as stated in the post above.
A more efficient blower compresses more air at the same PSI as a less efficient blower. This increased cylinder pressure (because of more air) is what destroys blocks because it is making more power.
it is really pretty simple, more air, more power, more cylinder pressure at the same boost level.
RPM affects it because the higher the RPM the higher the pressure as well as stated in the post above.
yeah that is what I meant...
there will be more "air" in the combustion chamber and hence more stress on the engine.
Since all our engines are, is a giant Air pump.
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Originally posted by l-menace
there will be more "air" in the combustion chamber and hence more stress on the engine.
there will be more "air" in the combustion chamber and hence more stress on the engine.
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From: Grand Prairie, TX
SVT-sinister,
I'm sure you have gathered by now, that there are a number of different variables that can cause a motor (Lightning motor in this case) to let go. Whether it be due to excessive cylinder pressure, detonation, abusive driving habits, unsafe tune, excessive RPM's, etc...etc...etc...
Luckily, our motors were purposefully built for forced induction (a forged crank, and forged low compression(8.4:1) pistons). The connecting rods being the "weak" link. Throwing a more efficient blower on it does not automatically mean that the motor is going to self-destruct, as long as you're MINDFUL of your tune, boost levels(cylinder pressure) and driving habits.
You simply have to follow the guidelines that have been outlined in the above posts, and keep things in check. Just resist the temptation to get GREEDY, with the boost and power levels, and keep your driving habits in check. With 12psi out of the KB, and a modest list of bolt-ons, your L should easily make 450+rwhp. Goodluck!
Later,
Rob
I'm sure you have gathered by now, that there are a number of different variables that can cause a motor (Lightning motor in this case) to let go. Whether it be due to excessive cylinder pressure, detonation, abusive driving habits, unsafe tune, excessive RPM's, etc...etc...etc...
Luckily, our motors were purposefully built for forced induction (a forged crank, and forged low compression(8.4:1) pistons). The connecting rods being the "weak" link. Throwing a more efficient blower on it does not automatically mean that the motor is going to self-destruct, as long as you're MINDFUL of your tune, boost levels(cylinder pressure) and driving habits.
You simply have to follow the guidelines that have been outlined in the above posts, and keep things in check. Just resist the temptation to get GREEDY, with the boost and power levels, and keep your driving habits in check. With 12psi out of the KB, and a modest list of bolt-ons, your L should easily make 450+rwhp. Goodluck!
Later,
Rob