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banzaibaz
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 Posted: Fri Jun 29, 2012 7:32 pm |
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Joined: Wed Oct 20, 2010 8:37 pm
Posts: 285
Location: uk southampton
Car Model: ST205
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Was wondering if the lateral would benefit the 3S-GTE engine has anyone else done/looked/researched into this....
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TrackToyFour
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Posted: Fri Jun 29, 2012 11:58 pm |
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| Club Staff |
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Joined: Wed Jul 13, 2005 12:06 am
Posts: 4743
Location: Perth, Western Australia
Car Model: ST205
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I'm not aware of anyone looking into this on the 3S-GTE. The technique seems to be more common amongst the nitrous injection community. not sure of the benefits unless you are pushing the revs or boost.
For the uninitiated, gas ported pistons (vertical or lateral) are supposed to help with ring sealing. The ports provide a more direct path for cylinder pressure to get behind the top ring. Gas pressure helps force the ring out against the cylinder wall. In high rpm applications, gas porting helps thinner, lighter rings be more stable, reducing the tendency to bounce or flutter in the ring groove (which can break the seal).
_________________
Don
GT4DC Chairman
1994 Toyota Celica GT-Four ST205WRC JDM 269bhp @ 0.9bar
1994 Toyota Celica GT-Four Special GT 590bhp @ 1.8bar
1989 Van Diemen RF88/89 Formula Ford 1600
2008 Nissan Patrol GU 3.0L ZD30DDTi 154bhp
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