Hi Everyone, I'm currently in the process of switching my '70 Mk3 from the single Stromberg to the twin SUs. Here's what I've done so far:
- Bought a used Mk3 dual SU manifold - Bought two used SU carbs from a '69 Mk3 - Bought a rebuild kit from Burlen Fuel Systems in the UK (including throttle shafts and throttle butterfly discs) - Rebuilt the carbs with above kit - Ordered K&N filters - Ordered an EC valve & hose, mounting bolts, new intake/exhaust manifold gasket from SpitBits So I think I've got a good foundation and the next steps I am guessing are the following: - Connect my existing (non-cable) throttle linkage and cable choke linkage to the new carbs once they are installed - Route new fuel hoses between the fuel pump and carbs and between the front and rear carb. - Tune and synchronize the rebuilt carbs. Questions I have... - Can I adapt my existing throttle linkage, or do I need to find a used linkage from a '67-'69 Mk3? - The needles and piston in the suction chamber rise and fall smoothly into the new jets, but don't settle all the way down -- there's still approx. a 1/4" to 1/2" gap between the bottom of the piston and the bottom of the carb throttle body. Is this correct, or are the jets or something else out of alignment? - The only two external linkages that came with the carbs I bought was A) a connection between the front carb and rear carb's throttle linkages and B) a mystery linkage which looks to connect the linkages that push the jets up or down. Is there anything else I need? - Do people generally recommend the Unisyn tool. or is the mechanic's stethoscope method of tuning reliable? Once the carbs are synched, should I pull out my ColorTune and adjust the mixture further or just not mess with it? Thanks! Adam '70 Spitfire Mk3 PS -- Just received Joe Curry's '70 Mk3 front badge restoration kit today and it looks great! Thanks Joe! __________________________________ Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree *** http://www.team.net/the-local *** *** unsubscribe/change address requests to [EMAIL PROTECTED] or try *** http://www.team.net/cgi-bin/majorcool *** http://www.team.net/mailman/listinfo *** Archives at http://www.team.net/archive *** Edit your replies!
