american zetec heads?
17-01-2007, 06:45 PM
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american zetec heads?
ive heard american zetec heads have 30% larger ports and larger valves, is this true? what cars do these come in? cheers
20-01-2007, 06:00 PM
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Re: american zetec heads?
Originally Posted by rst in progress
ive heard american zetec heads have 30% larger ports and larger valves.....what cars do these come in? cheers
Seriously Paul, american ebay? There was one for sale on here not long ago?
21-01-2007, 08:44 AM
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the 1 you are asking about are the ones I had.
very early developement heads from america circa 1990
inlet ports are massive compared to normal & inlet manifold is completely different with dual stage throttle butterflys in the inlet tract for low down torque & high end power
cliff uses 1 on the engine i sold him, I still have 1 as a spare
very early developement heads from america circa 1990
inlet ports are massive compared to normal & inlet manifold is completely different with dual stage throttle butterflys in the inlet tract for low down torque & high end power
cliff uses 1 on the engine i sold him, I still have 1 as a spare
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21-01-2007, 09:44 AM
#9
As Ian mentioned. I have one on mine.
I don't know the difference in the specs of the heads but when I took it to Field motorsport to have the engine built I was told by Tommy Field that it was a very good find for reasons along the lines of having bigger ports etc.
I don't know the difference in the specs of the heads but when I took it to Field motorsport to have the engine built I was told by Tommy Field that it was a very good find for reasons along the lines of having bigger ports etc.
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