Hot Running Windsor based 427 FFR Roadster

[Cobranut]

It may have been 40. It's been years since I adjusted it, as I've only driven it twice in the last two years, and would have to check my notes to be sure.
I know I did have to limit the centrifugal advance quite a bit so I could run more initial. Otherwise it would run hot, and the idle was a lot more lopey.
I run a Crane ignition control, which retards timing a bit during cranking, allowing for more initial advance.
My motor is 12.5:1 compression, and runs 110 octane race fuel.

Originally Posted by DanEC

Do you mean 40 des total? It would be unusual to run a distributor with only 10 degrees (crank) centrifugal advance. Keith Craft recommended 40 deg total for my low compression motor but I'm running 15 initial and 37 total right now.

[BOBOCobra]

What does the temp do when you are driving on the highway? Get it out when it is cool like this, get it on the highway, watch your temps before, during and after and report back. 210-215 is not going to damage much. Keep it below 225 and go for a ride in order to troubleshoot.

[BOBOCobra]

Also, what is your crank pulley and WP pulley diameters?

[crawleyscobra]

Anyone think that a degas tank might help.

I believe I have the same motor as Rhunt and have the Forte Degas tank. I know it sure made burping the system a lot easier.

[jhv48]

So, what solved the problem?

[jhv48]

Here it is!


OK now have fixed hot running 427 Windsor. Heres what happened:
1.) checked and double checked and bled all air from cooling system. Rasied front of car and still had a small amount of air. 2.) Purchased 427 Surge tank from Cobra Restorers (CR) in GA and this has eliminated any air. Very nice component from CR , ecxcellent workmanship by Jimmy at CR!) Purchased laser temp. gun and verified temperatures were around 180 to 190 deg F with a 180 deg F thermostat. Still getting high gauge readings even after all this work on Smiths water and oil temp. gauges. Pull sending units and measured resistance at ambient and in boiling water against Smiths resistance values. Found both transducers were out of line with charts. Order two new transducers from Nisonger and decided also to replace my 30 year old Smith gauges with new stepper motor Smith gauges. Installed new transducer and gauges and all now works perfectly. Temperatures running now at 180 to 190 and when fan comes on the temp actually drops just like it should. Thanks to all for suggestions and ideas .... problem now solved.

[Dwight]

Thanks for post the solution. Most guys never post if they fixed the problem not. They leave everyone hanging. Problem no solution.

Thanks

Dwight