Log Style VS Header Style? - Boost Forum

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Log Style VS Header Style?
Tuesday, August 09, 2005 12:28 PM
ok, just like the title says, Log Style VS Header Style, which manifold is better? what are the pro's & con's of both!?



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Re: Log Style VS Header Style?
Tuesday, August 09, 2005 1:01 PM
Log style = cheaper, and possibly more heat retention.
But, it creates more backpressure in the manifold, so depending on the cam, you could have a better chance for reverse flow.

Header style = better flow, less backpressure, higher gas velocity.
But also more expensive, needs more bracing, more materials, more R&D time, and possibly more heat loss.


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Re: Log Style VS Header Style?
Tuesday, August 09, 2005 1:15 PM
yeah its all heat and pressure.




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Re: Log Style VS Header Style?
Tuesday, August 09, 2005 6:52 PM
OHV notec wrote:Log style = cheaper, and possibly more heat retention.
But, it creates more backpressure in the manifold, so depending on the cam, you could have a better chance for reverse flow.

Header style = better flow, less backpressure, higher gas velocity.
But also more expensive, needs more bracing, more materials, more R&D time, and possibly more heat loss.


Wow, beautifully said!




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Re: Log Style VS Header Style?
Tuesday, August 09, 2005 11:07 PM
don't forget, log style = space saver

got limited space? we got log mani =D





Re: Log Style VS Header Style?
Tuesday, August 09, 2005 11:39 PM
equal length manifolds are not only beautiful to look at, they are marvels to me. i know what it takes to make one. plus they work better for high boost.




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Re: Log Style VS Header Style?
Friday, August 12, 2005 11:01 AM
thnk you all for your input!



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Re: Log Style VS Header Style?
Saturday, August 13, 2005 9:58 AM
MaximumBoost.net wrote:
OHV notec wrote:Log style = cheaper, and possibly more heat retention.
But, it creates more backpressure in the manifold, so depending on the cam, you could have a better chance for reverse flow.

Header style = better flow, less backpressure, higher gas velocity.
But also more expensive, needs more bracing, more materials, more R&D time, and possibly more heat loss.


Wow, beautifully said!

Hey man, I keep clicking on the link to your site and it's not working. Is it down temporarily?

I wanted to see some pics for log-style ECOTEC manifolds, w/ external wastegate. Do you have those? Just wanted to look that's all. lol.


Adrock, you rock so well
Re: Log Style VS Header Style?
Saturday, August 13, 2005 11:03 AM
Id say the saem, for low boost say 10psi and under a log mani will do just fine.

But if your looking for max power and high boost then an equal length header design is the only choice, becuase at high boost the log will cause flow problems and loss of power.


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Re: Log Style VS Header Style?
Sunday, August 14, 2005 8:49 AM
Quote:

equal length manifolds are not only beautiful to look at, they are marvels to me. i know what it takes to make one.


I agree!! To add, for those who may not know, many "header" style manifolds are not "equal length" manifolds. Although this isn't as important when boosted, it's still nice to what you're paying for is what you're getting when you're shopping for parts.

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