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Location:
Brisbane
Registered:
February 2003
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Re: whats involved in lowering compression?
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Sat, 26 March 2005 16:21
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mine maxes at 13psi - but anything over 5psi required water injection to control combustion
as noted earlier, compression is at 7.4:1
the detonation/pinging issues comes from:
fuel exploding instead of burning
fuel burning from multiple points in the chamber instead of outwards from the spark
ignition fires to early - for amount of fuel/air being shoved into engine
suggestion: seeing as you're going carbi & stock ignition, you could try the following:
-water injection thru the carbi (mine was setup that way) with a simple pressure switch to turn on a pump (high flowing windscreen sprayer will suffice), will need experimention with nozzle.
-remap dizzi to lower overall mechanical advance and have the curve end before boost starts
-adapt a cordia turbo boost/vacuum dizzi advancing thing (name?) so when under boost, you retard the timing
seeing as you are racing you will want cold air to the carbi - the setup you've got sound very much like my own (which is changing to EFI with FMIC) and the air temps were excessive.
if you're after stromberg (CD175) already setup (e.g. right needlesize i think) to suit a turbo, PM me 
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| | Subject | Poster | Date |
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whats involved in lowering compression?
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Rumble | Sat, 26 March 2005 05:32 |
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Re: whats involved in lowering compression?
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mideon_696 | Sat, 26 March 2005 05:48 |
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Re: whats involved in lowering compression?
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4agte | Sat, 26 March 2005 06:17 |
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Re: whats involved in lowering compression?
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jesseT18 | Sat, 26 March 2005 07:33 |
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Re: whats involved in lowering compression?
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towe_001 | Sat, 26 March 2005 12:13 |
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Re: whats involved in lowering compression?
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thechuckster | Sat, 26 March 2005 12:34 |
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Re: whats involved in lowering compression?
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Rumble | Sat, 26 March 2005 10:38 |
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Re: whats involved in lowering compression?
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jesseT18 | Sat, 26 March 2005 11:50 |
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Re: whats involved in lowering compression?
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Rumble | Sat, 26 March 2005 14:16 |
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Re: whats involved in lowering compression?
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thechuckster | Sat, 26 March 2005 16:21 |
