6psi klde

mitmaks · Post by **mitmaks** » August 23rd, 2005, 9:38 pm

how much approximate hp am I looking at with 6psi on kl-de?

PATDIESEL · Post by **PATDIESEL** » August 24th, 2005, 2:03 am

Probably around 220-250, depending on engine management and other factors.
Scientifically, and without any factors such as friction, 12 Lbs. of boost doubles the out-put of a motor.

babyblueMX3 · Post by **babyblueMX3** » August 24th, 2005, 8:09 am

PATDIESEL wrote:Probably around 220-250, depending on engine management and other factors.

yeah those numbers look decent.

bmwm3guy · Post by **bmwm3guy** » August 24th, 2005, 9:25 am

PATDIESEL wrote:Scientifically, and without any factors such as friction, 12 Lbs. of boost doubles the out-put of a motor.

Wouldn't it be 14.5lbs? 1 Bar = 14.5lbs so in order to double the air coming into the motor, you'd need 14.5lbs of boost.

babyblueMX3 · Post by **babyblueMX3** » August 24th, 2005, 9:35 am

I think that would be correct Eric
since the absolute pressure is 14.7 (0 manifold pressure)if you add another 14.7 psi (manifold pressurE) you double the air entering the engine.

jschrauwen · Post by **jschrauwen** » August 24th, 2005, 3:35 pm

Judging by the info available on PT boosting a DE is not such a good idea due to weaker internals, specifically the bottom end. I think they mentioned that you'd be flirting with danger anything over 6psi. I believe a ZE bottom end is a little stronger for something like that or rebuilding the bottom end of a DE as in the case of Spinkx79. FWIW

babyblueMX3 · Post by **babyblueMX3** » August 24th, 2005, 3:44 pm

jschrauwen wrote:Judging by the info available on PT boosting a DE is not such a good idea due to weaker internals, specifically the bottom end. I think they mentioned that you'd be flirting with danger anything over 6psi. I believe a ZE bottom end is a little stronger for something like that or rebuilding the bottom end of a DE as in the case of Spinkx79. FWIW

the ze bottom end is the exact same as the DE bottom end (minus the pistons shape)

PATDIESEL · Post by **PATDIESEL** » August 24th, 2005, 4:16 pm

Thanks for the correction on 1 Bar. I knew that, but don't know why I posted 12Lbs.

MX-3 Money · Post by **MX-3 Money** » August 24th, 2005, 4:24 pm

wow, we got a science lesson going on here.

mitmaks · Post by **mitmaks** » August 24th, 2005, 8:02 pm

what about kfze, good choice for boost? I can pick up one locally cheap $300

jaydog5678 · Post by **jaydog5678** » August 25th, 2005, 4:17 pm

We have a member here in Atl. that has a DE bottom end with ZE heads and cams. He's running about 7 lbs of boost through his Mitsu turbo on stock injectors with no problems so far. I don't think there is any difference in the bottom end besides the comp. ratio. They both (ZE,DE)_ have forged cranks and rods. Strength really is not an issue at low boost below 10 lbs. The correct fuel and ignition timing will allow you to run a higher boost on both engines.

A KF has the same forged internals, minus the pistons but it still has the 10 to 1 comp like the ZE.