Thread: ls vtec turbo
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Old Feb 28, 2007 | 09:26 AM
  #9  
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mberndt
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From: Allentown PA, - Phila, PA
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[QUOTE=primetime;3393367It's pretty clear that you have never put an ls/vtec together because it's way more than "slapping" a vtec head onto an ls block. And the only thing you have to do to make it a reliable daily driver is use GSR or Type R rod and crank bearings because they were DESIGNED for extremely high rpms from the factory[/QUOTE]

Wow, you must be a psychic... LOL

You are right, I have never and will never build an LS/VTEC because I know it is unreliable, period.
If it's "way more" than slapping a head on an LS block, explain what this "way more" is???? An extra oil line? Please...

The fact is the LS was not DESIGNED for high rpm use, so it will fail prematurely...
Just to illustrate what I'm talking about when I say DESIGN, I mean that for example the rod cap bolts in the LS Do not get torqued nearly as high as those in both B18C and B16A engines. Torque on bolts = clamping force... So right away you can see that the LS was not intended to be used at high rpms, because the increased momentum will cause more stress on the bolts...
In case you didn't know, momentum is dependent on 2 variables...
M= 1/2mv^2
So, you can easily see that the momentum is most easily affected by the velocity of the rotating mass... Go twice as fast and you got 4 times the force... Get it yet?

So if you wanna run you LS/VTEC at 8k rpms, go ahead. it is only a matter of time that you will ruin the motor...
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