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6 cyl Bristol cars Type 400 to 406 - restoration, repair, maintenance etc

403 Carburation

 
 
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Old 10-03-17, 04:37 PM
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Join Date: Sep 2010
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Default 403 Carburation

Finally got the car back but now need advice on carburation.

The triple Solex were (I assume) re jetted to 100B spec when the updated cam was fitted by Bristol and ran cleanly.

Following the rebore it now has Cosworth pistons of approximately 9.5:1 compression and the carburation is no longer clean, particularly at higher revs (3,000+ approx.).

Can anyone suggest what jetting I should use in the Solex carbs with 9.5:1 pistons?
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