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Carbs HS6's have been retuned to give 4.7co and car is much more tractable. The vacuum pipe gong to the dizzy has hardly any suction. and if you put your thumb on the nipple (got to be careful here!) that goes into the carb, the same lack is there. How much should there be? because on tickover...

many thanks for your input. The car is going back in tomorrow as it is running very weak with a co reading of under 3. I have told them to put it back to just over the mot limit of 4.5 and to retime it then. I will repost after

Thanks for that, It is not fouling the manifold, the reson for 20dgrs is it will not run properly at a lower advance. It does not pink or run on and there is no 'back spit' I run on Shell Optimax plus valvemaster plus

??? The Rover V8 in my MG Costello is performing very well indeed, with no hesitation or misfire. HOWEVER when I sent it in today for some carb work I told them to check the timing and set it to 5dgrs btdc at 550 rpm. The garage told me that after using 2 different strobes they could only set it...

The cable is available from Brown and Gammons

Thanks for that. I am surmising that it is a 10.5 engine, but I can not find the engine number anywhere ( i have looked at all the designated places! The engine is fitted with 2x HS6 su's and not hif's with a rear rather than center manifold. My car is 1976, but BL would not suply Costello with...

I would be grateful if someone could tell me the average psi or bar on a compression test for a 74 high compression (10.2 to 1 I think) Thanks Robert

Gentlemen, sorry to 'hi-jack' your forum, but in my defence I did have 2 P6 3500s in the early 70s (an early one with air con, it had super vents in the bonnet, and a later one to std spec) incidently if they are still in use the first name in the log book will be GUS Transport. Anyhow, I have...