standard boost?
#1
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standard boost?
Please help.
Could someone please tell me what standard boost is on cosworth engine as im turning my stage 1 mk2 escort down to standard to see if i can live with it.
Thanks Mac
Could someone please tell me what standard boost is on cosworth engine as im turning my stage 1 mk2 escort down to standard to see if i can live with it.
Thanks Mac
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whats the most boost a stage 1 can handle with alloy rad and 500cooler. Mine currently peaks at 20 and holds 16 but my mechanic said he can change the preload on actuator to get about 24psi?
#7
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You can't just simply wind the boost up, unless you have the fueling avaliable, in other words it's 'mapped for it'.
There is a whole lot more involved than what's been said, for example the standard injectors need to be changed, plus you would need a 3 BAR MAP sensor and a -31 actuator (If you don't already have the latter) and a remap (Chip).
In other words you would need to go for a stage 3 setup OR the likes of a 'Gunship'.
I mean this in the nicest possible way, but leave any tuning work on these cars to people who understand and know how they work (Tuner's in other words), what you have been told is totally incorrect!
Generally speaking stage 1 is about 15PSI, the standard MAP sensor can only 'see' 1 BAR of boost pressure!
Other things like a decent HG is fitted should also be verified.
Martin
Last edited by martysmartie; 28-04-2012 at 12:50 PM.
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#9
I don't believe standard injectors can keep up with 20 psi. I run 19 psi peak on T3 and I have Bosch greens. Cosworth standard injectors on Stage 1 usually see maximum of 15 psi. On Stage 2, as said, you need Bosch 803 (green) injectors, 3 bar MAP sensor, -31 actuator and for extra security, stronger head gasket.
I wouldn't risk running 20 psi boost with standard injectors, you might get the mixture too lean and blow up the engine. Fit greens and required chip for it to be safe!
I wouldn't risk running 20 psi boost with standard injectors, you might get the mixture too lean and blow up the engine. Fit greens and required chip for it to be safe!
Last edited by Cossie92; 28-04-2012 at 04:01 PM.
#11
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Only 1 PSI.
The standard injectors arn't so much the problem, you can run near stage 3 power with them with the 'Gunship' conversion but they are at the limit, the main difference is it's mapped for it, unlike your current calibration!
Plus the standard MAP sensor, as I say can not 'see' that sort of boost pressure.
Martin
The standard injectors arn't so much the problem, you can run near stage 3 power with them with the 'Gunship' conversion but they are at the limit, the main difference is it's mapped for it, unlike your current calibration!
Plus the standard MAP sensor, as I say can not 'see' that sort of boost pressure.
Martin
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