Valve guide clearance question
04-19-2019, 08:37 PM
#62
Registered
Anyone like me that worked on carb cars back with Tyrannosaurus Rex's and Pterodactyls ?
Anyway, dumb mid/late 70's cars had very low/retarded timing and could and did over heat very easily. Changed initial and rest of timing on many cars and wallah.....idle till the cows came home and watched everyone else overheat.
This is how I got performance BBC; in small cars to run fine fine in traffic...yes, even in Fox Bodies...oh wait, what ? LOl.
Anyway, amazing how even a handful of degree in ign timing can reduce idle and low speed coolant temp.
Anyway, dumb mid/late 70's cars had very low/retarded timing and could and did over heat very easily. Changed initial and rest of timing on many cars and wallah.....idle till the cows came home and watched everyone else overheat.
This is how I got performance BBC; in small cars to run fine fine in traffic...yes, even in Fox Bodies...oh wait, what ? LOl.
Anyway, amazing how even a handful of degree in ign timing can reduce idle and low speed coolant temp.
04-22-2019, 04:42 PM
#63
Registered
Thread Starter
Yes I thought about propping the hood open but just don't like the look. I installed a cowl a few years back to help with air flow plus needed the added height for intake and elbow.
I would have to check my cal but if my memory is correct I have 25* at idle- 950-1000rpm (with idle stabilization on 20-30* to control rpm).
I would have to check my cal but if my memory is correct I have 25* at idle- 950-1000rpm (with idle stabilization on 20-30* to control rpm).
04-22-2019, 07:31 PM
#64
Registered
Join Date: Jan 2007
Location: Murrayville Georgia
Posts: 1,851
Likes: 0
Received 928 Likes
on
337 Posts
dont know if it is possible with the computer you are running but could you set it up to advance the timing a few below a set rpm if the temp goes above a certain point. that is the way the old TCS (transmission controlled spark) system worked on early '70's cars. in high gear and/or above a set temp it would activate the vacuum advance to raise timing. in high gear it was for lower emissions and better economy and the temp would advance it so at idle if it got hot the added timing would help to cool it down.
04-22-2019, 07:58 PM
#65
Registered
Thread Starter
dont know if it is possible with the computer you are running but could you set it up to advance the timing a few below a set rpm if the temp goes above a certain point. that is the way the old TCS (transmission controlled spark) system worked on early '70's cars. in high gear and/or above a set temp it would activate the vacuum advance to raise timing. in high gear it was for lower emissions and better economy and the temp would advance it so at idle if it got hot the added timing would help to cool it down.
