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Quote </td></tr><tr><td id="QUOTE">Quote: from WeST on 4:20 pm on Feb. 5, 2002
A cheap alternative to running higher compression is to get your 5-Speed DOHC and swap in some pistons from a SOHC into your car. It will increase it to 10.5.1(could be wrong) and give about a 5% gain. Not alot but its alot ezier and cheaper and if you run higher compression then that on the street then have fun stopping and going out of the way for 103 octane gas every time you need gas. Its just not very practical for a daily driver. Even with the higher compression I would run a higher octane like 95, and in states like mine that is hard to find. You will have to stock up on octane booster for when you fill up.
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i dun want 2 go against a mod but.........are you sure that you can take pistons off a soch and put it in a doch because the soch is 3 valves per cylinder and the doch is 4 valves per cylinder, the valve relief on the soch pistons should be different then the doch pistons...so the exhuast valves would line up and will hit.......
edit: west bought the idea that ka pistons are not domed....if thats true then there is no problem <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/biggrin.gif" border="0" valign="absmiddle" alt=':D'>
(Edited by wherezmytofu at 5<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/wow.gif" border="0" valign="absmiddle" alt=':0'>8 pm on Feb. 5, 2002)