Delsolcrazy
Junior Member
So would it be worth it for me to get the head on my b20b ported and polished or should i just save my money and get a v-tec head.
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Originally posted by Blanco@Nov 21 2004, 05:02 AM
VTEC even.
What are your goals for your engine? Though I'm building a D16, my deciding factor in going with a VTEC engine is the different lobe profiles and some attempt at keeping gas milage.
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Originally posted by civicious@Nov 21 2004, 02:21 PM
Who would say that vtec isn't good for boost?
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Originally posted by sohcslammer+Nov 22 2004, 03:26 PM-->civicious@Nov 21 2004, 02:21 PM
Who would say that vtec isn't good for boost?
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Road racers. Try road racing a VTEC turbo and having the VTEC engage around a turn....
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Originally posted by UDT+Nov 22 2004, 05:49 PM-->Originally posted by sohcslammer@Nov 22 2004, 03:26 PM
civicious@Nov 21 2004, 02:21 PM
Who would say that vtec isn't good for boost?
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Road racers. Try road racing a VTEC turbo and having the VTEC engage around a turn....
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Yeah i thought about that, i mean in a sence it would seem to me that Vtec would have almost the same effect a turbo has when it kicks in, just not quite as strong, though im willing to bet on even the strongest N/A Vtec engines they dont find it to be to big a problem when it enguages, im sure the power increase isint so much that the tires cant over come it.
though lower the enguagement some and im sure you will never find yourself out of Vtec very often if at all.
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Originally posted by Calesta@Nov 22 2004, 06:38 PM
If you're good at tuning, you can smooth out the VTEC transition so much that you don't feel it at all. That's how I prefer my VTEC engines- I can only hear the VTEC crossover- I never feel it.
Also, on a road race only car, you're not using the low range of your engine's power band at all, so running a non-VTEC head lets you have a much simpler engine setup. It's easier to tune because you only have one cam profile, you have fewer items bumping against each other (lower friction), you have fewer lobes (less mass) on the cams... there are lots of advantages to running a non-VTEC setup on the track. That's why they make VTEC killer cams. I wouldn't want to run a setup like that on the street though.
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Originally posted by sohcslammer+Nov 22 2004, 05:48 PM-->Calesta@Nov 22 2004, 06:38 PM
If you're good at tuning, you can smooth out the VTEC transition so much that you don't feel it at all. That's how I prefer my VTEC engines- I can only hear the VTEC crossover- I never feel it.
Also, on a road race only car, you're not using the low range of your engine's power band at all, so running a non-VTEC head lets you have a much simpler engine setup. It's easier to tune because you only have one cam profile, you have fewer items bumping against each other (lower friction), you have fewer lobes (less mass) on the cams... there are lots of advantages to running a non-VTEC setup on the track. That's why they make VTEC killer cams.  I wouldn't want to run a setup like that on the street though.
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Is there anything you DON'T know?
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Originally posted by UDT+Nov 22 2004, 08:06 PM-->sohcslammer@Nov 22 2004, 05:48 PM
Is there anything you DON'T know?
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How to suck a noodle in his nose and out his ass?
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Originally posted by Arachnid@Nov 23 2004, 12:30 PM
don't bother with porting until you get some pimp cams. and most if not all the bolt-ons to allow for that free flow.
unlike calesta there's a reason i go vtec and that's to feel it so imo i'd set vtec higher just cause IT'S VTACC YO!!!
sohcslammer you're running a sohc? if y8 should do some porting if z6 should do some porting then you'll have all the flow you'll want. if turbo'd d then porting will make good power. a good porting job will/should always make more power.
porting a turbo set-up is for efficiency. porting n/a is for breathing at higher rpms. but if done correctly then powerband will rise on both. imo
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How much will I benefit from porting the head? And what's the difference between port and polish and just polish?
Originally posted by 92b16vx@Nov 23 2004, 01:33 PM
How much will I benefit from porting the head? And what's the difference between port and polish and just polish?
Porting is altering the combustion chambers shape, polishing is smoothing out the existing surface.
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Originally posted by 92b16vx@Nov 23 2004, 11:33 AM
How much will I benefit from porting the head? And what's the difference between port and polish and just polish?
Porting is altering the combustion chambers shape, polishing is smoothing out the existing surface.
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Originally posted by MikeBergy@Nov 28 2004, 04:01 AM
And he doesn't know anything about CALIFORNIA. .
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