ls vtec turbo
Junior Member
Joined: Mar 2005
Posts: 322
Likes: 0
From: Connecticut
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...
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...
well when mine falls apart i'll let you know but after 4 years with no problems it may be awhile!! oh and by the way i'm still using ls rod bolts, just torqued to gsr specs!!
again if you haven't built one then maybe you shouldn't comment on it, especially since you seem to think that it adding an oil line!!
WHEN YOU MODIFY ANY MOTOR, YOU ARE DOING THINGS TO THE MOTOR THAT WEREN'T INTENDED BY THE FACTORY. Anything you do to any motor outside factory spec can screw it up if you don't do it right.
so when you've finally built your first motor then come and talk to me or at least come with the correct information so you don't look like an ass!!
Last edited by primetime; Mar 1, 2007 at 05:11 AM.