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Thread: JWT high lift cams for turbo

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Posts: 31-40 of 63
2011-03-02 00:29:56
#31
Originally Posted by STRATTON
reese, you think its worth it for a few more ponies ?

stratton.


^First glance at the .020 lift yes , but probably not.

Originally Posted by STRATTON
Who the hell runs a ve with an oem header and stock intake.I ran s4s for more then 5 years, great cams. But u cant compare a de with cams to a ve.

When was the last time you say a de run 12s let alone mid to low 11s ?

Give it up man lol.

Stratton.


2011-03-02 22:24:52
#32
Originally Posted by MR-4Door-SR20DET


he did say "stock".

Originally Posted by Will
I mean the integral of the function that would define the area under the graph of power, even starting at 4500. i.e. the total summation of power, meaning the power stays up more consistently throughout the rpm range


WHAT?!?!? lol

i have no idea what you are talking about.
2011-03-02 23:58:57
#33
Originally Posted by vqman
he did say "stock".



WHAT?!?!? lol

i have no idea what you are talking about.


even in the 4500+ the VE is going to make more power, with a better curve. Werent there threads comparing dyno graphs at some point?
2011-03-03 00:26:20
#34
I think I'll call JWT and get their opinion on the High Lift S4's in a Sr20det head because a few of you guys seem to be purposely avoiding the subject.
2011-03-03 01:21:06
#35
I would like to know what they say, if you could post that please.
2011-03-03 01:24:10
#36
Originally Posted by Will
even in the 4500+ the VE is going to make more power, with a better curve. Werent there threads comparing dyno graphs at some point?


because of what Stratton said is true (no one that does a VE swap keeps a stock intake or header), this argument is pretty meaningless..

but, I like debating, even if I'm wrong I learn...

So anyway, the powerband above 4500 for an S4 cam equipped DE is pretty darn good looking.

stock VE compared to S4 HL with full bolt ons? we haven't even discussed if the DE is a highport or a lowport. the Lowport being the better flowing of the two. Does anyone have a dyno chart of a STOCK VE?

the only advantages (after VTEC kicks in yo) that the VE has on a dyno run over any DE is the much higher flowing head and higher compression... it doesn't have any other differences that would provide mo-power .. the better oil pump, oil squirters, and the better coolant flow through the VE head only help with durabilty/longevity by keeping the engine cooled better. agree or disagree?


again, I don't believe we have any dyno graphs of a completely stock VE (stock intake and exhaust manifold)..


high lobe of VE cam:
INTAKE -0.421 LIFT /264 DEG.DUR
EXHAUST -0.407 LIFT/268DEG.DUR


S4HL cam
INTAKE - 0.484" LIFT / 266 DEG.DUR.
EXHAUST - 0.484" LIFT / 266 DEG.DUR

the S4HL cam has 0.063 more inches of lift on the intake cam and 0.077" more lift on the exhaust cam than a stock SR20VE cam.

That's like the difference between a stock highport cam and an S4 cam.. good for about 15-20 hp, no?


for comparison sake, SR16VE-N1 cams have about 0.470" lift on both the intake and exhaust cam
2011-03-03 01:41:25
#37
140hp vs 187hp. That's a lot of ground to cover. Even if a de with full bolt ons did make AS MUCH peak whp as the stock. The point is that the ve would be making more power under the curve.

Id say 160whp is about right for a cammed bolted on de right? Well that puts it about 180hp which means that it may peak about the same as a stock ve... but like I said above.. and when a ve costs what your cams and header did. Why are we having this discussion. Idk
2011-03-03 02:36:05
#38
Originally Posted by NI
I think I'll call JWT and get their opinion on the High Lift S4's in a Sr20det head because a few of you guys seem to be purposely avoiding the subject.


I see no reason they would not be better
2011-03-03 03:33:46
#39
Originally Posted by cory
140hp vs 187hp. That's a lot of ground to cover. Even if a de with full bolt ons did make AS MUCH peak whp as the stock. The point is that the ve would be making more power under the curve.

Id say 160whp is about right for a cammed bolted on de right? Well that puts it about 180hp which means that it may peak about the same as a stock ve... but like I said above.. and when a ve costs what your cams and header did. Why are we having this discussion. Idk


the original discussion was started about a race between a stock VE and a fully bolted DE with S4HL cams, and the S4HL cammed N/A SR was alledged to have "ran with" the VE, all through 5th gear.

Originally Posted by SR20?
I ran mine like 8k miles on stock springs and retainers. Never had any issues. Took them in and out of my car like 3 times and even let my friend borrow them for his N/A SR20DE. His car (with S4HL cams) was side by side with a stock VE with those cams, all through 5th gear. He had other bolt ons too, of course.


Originally Posted by STRATTON
That ve must have been sick...

Stratton.


we're talking about a RACE, not the low end torque. I don't know who races below 4500 rpm in a DOHC 4 banger..



Does the VE have more driveability? better longivity due to the better cooling? yes and yes..
does the VE offer more bang for the buck? yes

but I don't think the VE had to be sick to be only side-by-side with a heavily modded DE.

I mean, that really is a testiment to how great the VE is; if a fully bolted DE with pretty aggressive cams couldn't take it.. ya know?

i just don't think "SR20?" was full of crap with his statement, nor do I think the VE was "sick".

-vq
Last edited by vqman on 2011-03-03 at 03-53-45.
2011-03-03 03:36:07
#40
waaaay to much N/A talk for the turbo forums..

sorry
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