ruff seven Posted February 3, 2003 Share Posted February 3, 2003 Ford crossflow 1600gt 1972, could someone please give me valve clearances, contact gap / dwell angle and timing figures please Link to comment Share on other sites More sharing options...
Peter T Posted February 3, 2003 Share Posted February 3, 2003 Off the top of my head, valve clearances are 22" inlet, 24" Exhaust. Contact gap 25" I am sure Roger will be along soon to confirm other settings! Power Freak member! Link to comment Share on other sites More sharing options...
ruff seven Posted February 3, 2003 Author Share Posted February 3, 2003 thanks peter Link to comment Share on other sites More sharing options...
Old Septimus Posted February 3, 2003 Share Posted February 3, 2003 If it's a standard GT I think the inlet is 12 thou and the exhaust 22. Link to comment Share on other sites More sharing options...
Roger King Posted February 3, 2003 Share Posted February 3, 2003 Valve clearances depend on which book you read! If the cam is standard Ford we use .014" inlet and .021" exhaust (close to what Old Septimus says), but in truth a thou or so either way makes no difference to a Crossflow because of all the other components (pushrod, rocker, etc) that are bending and flexing. The figures of .022" and .024" are for the Supersprint version which neatly illustrates that valve clearances are dependent on the cam profile being used. So if you don't know the cam in your engine, you can't set the clearances and be sure that they are correct. Contact gap, dwell angle and timing are dependent on the distributor type fitted and therefore cannot safely be given without more information. Link to comment Share on other sites More sharing options...
ruff seven Posted February 3, 2003 Author Share Posted February 3, 2003 thanks roger, its actually running ford motorcraft rh contact set, and i do think its a standard engine, with a webber dg carb Link to comment Share on other sites More sharing options...
Roger King Posted February 4, 2003 Share Posted February 4, 2003 From memory (being an old bugger), the Lucas dizzy has a gap of .015", the Bosch .018" and the Motorcraft .025". Don't have the dwell figs in my head I'm afraid, but this might affect the gap depending on dizzy condition. At a guess, the timing would be 10 degrees BTDC at idle with the vac advance disconnected, but this is no guarantee. Sorry to say that the Motorcraft dizzies were famous for their poor quality. Edited by - roger king on 4 Feb 2003 15:43:05 Edited by - roger king on 4 Feb 2003 15:43:37 Link to comment Share on other sites More sharing options...
ruff seven Posted February 4, 2003 Author Share Posted February 4, 2003 thanks roger thats all the info i need Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now