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Joined: Aug 2002
Posts: 1,210
Hard-core CEG\'er
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Hard-core CEG\'er
Joined: Aug 2002
Posts: 1,210 |
Flowbenchs really don't tell you all that much... Maybe half the story...
Bigger a hole will basically flow more which doesn't necessarily mean it will be the best
3.0 14.392@97.237 2.302 60ft
OEM 4-bolt LCA's $105 each
Watch me go
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Joined: Sep 2000
Posts: 9,602
Hard-core CEG'er
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Hard-core CEG'er
Joined: Sep 2000
Posts: 9,602 |
Originally posted by 96BlackSE:
Flowbenchs really don't tell you all that much... Maybe half the story...
Bigger a hole will basically flow more which doesn't necessarily mean it will be the best
Exactly.
Port velocity, shape, and the promotion of greater cylinder filling easily trump a flow bench's "max" cfm numbers. Sort of a kin to the whole peak HP versus power under the curve philosophy.
2000 SVT #674
13.47 @ 102 - All Motor!
It was not broke; Yet I fixed it anyway.
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Joined: Jan 2005
Posts: 110
CEG\'er
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OP
CEG\'er
Joined: Jan 2005
Posts: 110 |
I know this. There is supposed to be what they call a "wet" flow bench that measures port velocity. I'm looking into this. I'm more concerned w/ seeing the path the air will flow as of now.
Last edited by rac74; 10/20/05 11:09 AM.
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Joined: Aug 2001
Posts: 5,810
Hard-core CEG'er
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Hard-core CEG'er
Joined: Aug 2001
Posts: 5,810 |
Originally posted by 96BlackSE:
And what were the mods with 209hp? 
Most of the hybrid's have much much more mods than the oval port which put down 209hp... So its basically like comparing apples to apple pie
No they don't. Most of the hybrids have headers and exhaust. Remember, this was back in the day when the ovalports were rare or before they were available. We didn't have squat for these cars.
Unless there was an engine management system on it, which most can't afford, then they were fairly equivalent. The ovalport dyno's that show the most power are intake/headers/exhaust, same as the hybrids and both have SVT cams. The cams are a serious mod right there.
Th basic ovalport with SVT cams and basic exhaust throws down 190s. The hybrid with svt cams, some porting and basic exhaust throws down guess what, low high 180's low 190's. The porting doesn't need to be a huge amount. The only thing is the variability among who preps the heads.
Extensive porting will throw the hybrid up over 200 and proper porting with bigger valves and headers will push the hybrid well above. Bottom line is that they are about equal on average with the nod going to the ovalport if there is less prep work done. The ovalport is also easier to do and in the long run a bit cheaper for what you get.
After doing both types of conversions and dyno'ing both types, I'd pick an ovalport for an easier conversion, and definitely for forced induction so I wouldn't have to do hardly anything. For a high end NA motor or an turbo motor prepped for the max potential, it is really a tossup to me.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black
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