Ok- Here's my problem for the day. No matter what I do, or try, I cannot get the Herald to idle properly all the time. I have tried adjusting the carbs several times, the valves, everything I can think of. I still come out too rich. Oh- and the front carb is temperamental- very finicky about it's mix- a hair too much, stalls when dashpot lifted, a little too lean, same thing. Rear carb is happy, and takes a lot to aggravate to the point of stalling.
I have the Herald 12/50 engine with stock head and cam, set up with dual SU HS2s from a Spitfire MkII. Is my problem that the car breathes too well for this setup? The valves are larger than the Spitfire ones, and I believe the cam is somewhat different as well, being stock Herald. I am starting to think she is flowing too much fuel because of the high aspiration, therefore the constant rich state. I have rebuilt both carbs entirely, rebushing the throttle shafts & putting in new jets(black plastic, not red, if that makes a difference. I also am using the "AN" needles that came factory with the Spitfires) My options at this point are simple- remove the dual SU's and reinstall the stock B30PSE1; Redesign and modify the linkage to a progressive linkage- i.e.- run on the front carb only, until a certain acceleration level met, then the rear will cut in,(like a 4 barrel works).; Modify so only one carb is active. Ideas? Scott /// [EMAIL PROTECTED] mailing list /// Send admin requests to [EMAIL PROTECTED] /// or try http://www.team.net/cgi-bin/majorcool /// Archives at http://www.team.net/archive /// Send list postings to [EMAIL PROTECTED] /// Edit your replies! If they include this trailer, they will NOT be sent.
