twosmoke Posted April 26, 2010 Share Posted April 26, 2010 . Quote Link to comment Share on other sites More sharing options...
fuel Posted April 26, 2010 Share Posted April 26, 2010 160psi suggests the comp ratio is as low as 8:1 Quote Link to comment Share on other sites More sharing options...
twosmoke Posted April 26, 2010 Author Share Posted April 26, 2010 . Quote Link to comment Share on other sites More sharing options...
shizzl Posted April 26, 2010 Share Posted April 26, 2010 my n/a mazda is stock 8:5 comp ratio, hmmm turbo time i think then.. Quote Link to comment Share on other sites More sharing options...
Brock-Lee Posted April 26, 2010 Share Posted April 26, 2010 google suggests 8.5:1 Wouldve been my first port of call EDIT: wiki backs this up with a range from 8.3 to 8.5:1 Quote Link to comment Share on other sites More sharing options...
mikuni Posted April 26, 2010 Share Posted April 26, 2010 Just turbo it regardless? Quote Link to comment Share on other sites More sharing options...
twosmoke Posted April 27, 2010 Author Share Posted April 27, 2010 . Quote Link to comment Share on other sites More sharing options...
Dr Danger Posted April 28, 2010 Share Posted April 28, 2010 Not 100% on SR's, but externally, a turbo motor should have an oil drain running back into the block on the exhaust side if it's a turbo. Obviously blocked off if the turbo has been removed. Would be strange to remove a turbo and put NA stuff on. Werid stuff happens though I guess. Quote Link to comment Share on other sites More sharing options...
Hemi Posted April 28, 2010 Share Posted April 28, 2010 Not 100% on SR's, but externally, a turbo motor should have an oil drain running back into the block on the exhaust side if it's a turbo. Obviously blocked off if the turbo has been removed.Would be strange to remove a turbo and put NA stuff on. Werid stuff happens though I guess. block or sump??? . *edit* also they could be like ca's where the oil feed is still in the block but blocked off by a fitting . Quote Link to comment Share on other sites More sharing options...
Ranter Posted April 28, 2010 Share Posted April 28, 2010 Na when adding turbo on Sr's you need to make a oil drain and feed. Also na S13 spec has the throttle body low like the turbos. I'd assume its na and check/clean/replace air flow meter Quote Link to comment Share on other sites More sharing options...
drftnmaz Posted April 29, 2010 Share Posted April 29, 2010 yea check the block for the water and oil feeds, in a n/a they are just not drilled and tapped but pedistall is still cast into block... my old det had about 160psi(8.5to1) when warm, and my de+t (9.5to1) has about 185psi when warm what colour injectors you got? they look like red/pink in that pic? which is n/a, purple if turbo... also what ignition system has it got? coil packs or dissy? pistons are dished in DET, and domed in DE Quote Link to comment Share on other sites More sharing options...
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