Gas Flowing or Port and Polish??

[DanClio]

Which do you guys think is a better gain for the money out of, Gas flowing or port and polishing??

Not quite sure of the differences...

 

[edde]

I think there the same, gas flowing just means using a machine to work out flow rates porting and polisng etc is the modying of bits of the engine.
Best ask BenR or stan* though they'll know more.

 

[stan*]

both are generic "terms" for modifying the ports to improve gas-flow. polishing is often mistakenly used, as there is little polishing....the major work is the re-shaping of the ports. polishing is the final exercise on the exhaust ports and chamber...it contributes very little to the overall performance gain.

PM me for more info/prices

 

[BenR]

A million people use a million terms for what is essentially a modified cylinder head, so feel free to call it anything you want as a head specialist will know what your referring to.....within reason, ask him for beans on toast and you'll get just that.

Modification of cylinder heads is a highly specialised area and there is a grat difference between people who do average headwork (the majority) and jaw dropping headwork. Reputations can be misleading as i know many 'experts' in the field of cylinder heads and most of them i wouldnt give a tractor to.

Polising is a left over term from the 70's.......i dont know any decent specialist that polishes anything at all.

 

[stan*]

i always polish....no harm in it. but yes, its typically un-necessary

 

[BenR]

i dont like polishing ex and chambers due to the carbon thickness variations it leads to. The correct finish will support a uniform and self cleaning carbon layber which enhances combustion quality, thats just what i do and like.

 

[Fred@BTM]

where did you learn Ben? (serious question for a change!!)

 

[stan*]

i dont like polishing ex and chambers due to the carbon thickness variations it leads to. The correct finish will support a uniform and self cleaning carbon layber which enhances combustion quality, thats just what i do and like.

fair point i guess

 

[BenR]

where did you learn Ben? (serious question for a change!!)

i learned ben back in asia, its quite common for most oversea nationals to learn ben........infact, i dont know where i would be today without knowing ben, ben is the best..........

ladies love ben aswell, so knowing ben greatly helps in that department.

 

[Fred@BTM]

ben has an inferiority complex because he's only 5ft2

 

[adehook006]

to ben r

if you were having you head reworked, and you couldnt do it your self name 3 other places in the uk you would trust

 

[Andy GDI]

to ben r

if you were having you head reworked, and you couldnt do it your self name 3 other places in the uk you would trust

very good question

 

[Andy GDI]

there is this bloke at the local chip shop

 

[BenR]

erm...........

That is near impossible to answer.

Cylinder head specialists only really specialise in a few heads, or a marque. It takes lots of time to develop and continue developing a head, its not a matter of someone just being a good flow specialist, it takes time, testing and more time, lots of thought and sparks of eureka.

Someone who is s**t hot at a cosworth head will be almost usless on a honda because they follow entirely different port design theory.

However most great head people will be able to make any head flow better, but like i said, alot of the specialists make heads which would convince me to stick with std items.

 

[Dan@SJM]

Chris H on retro-renault, Stan*

 

[stan*]

aye theres plenty of s**t work/workmanship out there.....