LOW COMP PISTONS?

CVH and Zetec tuning, suspension and braking mods.
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LOW COMP PISTONS?

Postby Fez Si Boy on Tue Nov 25, 2003 2:41 pm

Whats the difference with these type pistons?
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Postby ianFRST on Tue Nov 25, 2003 6:20 pm

basically they have a dish or sum type of effect on the top, where as normal piston are flat. creating a lower compression.

they are also stronger i think :-?

again. i no nothing :lol:
No longer a FRST owner, or even a Fiesta owner :(
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Postby heeman10 on Tue Nov 25, 2003 9:01 pm

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Low compression pistons lower the compression during the compression stroke :lol: Stupid sentence :rolleyes: Basically, the fuel mixture can get so hot from squashing it (Take a bit of Boyles' theory work....P1V1/T1 = P2V2/T2) that it detonates before TDC, so low comp pistons allow correct ignition, and a better ignition too :) Ahh good old A level Physics :bonkers:
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Postby nosworth on Tue Nov 25, 2003 9:07 pm

which means u can run more boost without making an oily mess of your engine...Yay!
Fear is standard brakes
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Postby Fezzy Turbo on Wed Nov 26, 2003 9:58 pm

You learn about low comp pistons in Physics ?? :o

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Postby heeman10 on Thu Nov 27, 2003 12:09 am

Just remember Boyle had some useful things to tell us about the behaviour of gases in compression :p My physics teacher was a simple man...once worked out bullets travel at 18 m/s :rolleyes:
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Postby heeman10 on Thu Nov 27, 2003 12:10 am

Just remember Boyle had some useful things to tell us about the behaviour of gases in compression :p My physics teacher was a simple man...once worked out bullets travel at 18 m/s :rolleyes:
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James .:. 193bhp/245lbft Zetec Turbo Mk3. Click sig for conversion thread + videos .:.
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Postby moulder on Thu Nov 27, 2003 6:19 pm

I definitly never learnt about about that stuff in A-Level Physics but I did fail it afterall. :rolleyes: :D
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Postby KEVFRST on Thu Nov 27, 2003 10:41 pm

Them aliens moved on from crop circles I c. :lol:
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Postby heeman10 on Sat Nov 29, 2003 2:58 pm

KEVFRST :Them aliens moved on from crop circles I c. :lol:


:lol::lol:

Oh and btw, please excuse my double-posting on this thread and one or two others, uni internet doesn't like FT :rolleyes:
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Postby Fez Si Boy on Mon Dec 15, 2003 3:41 pm

Can you get these pistons for a Fiesta Si 1.6 engine?
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Postby Jur on Thu Dec 18, 2003 2:20 pm

Fez Si Boy :Can you get these pistons for a Fiesta Si 1.6 engine?


You can, but you will only loose power..

low compression pistons are made for Turbo engines to run higher boost.

For an atmospherical engine higher compression gives more power (with a certain limit off course)
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