1963 Skylark, 215 rebuilt engine, was bored out, .30, properly cleaned, no issues with blockage. 160 thermostat, idle mixture not an issue. Transmission rebuilt as well. All new hoses etc, so no issues there. Pertronix ignition and an aftermarket edlebrock carb with a 3/4" spacer for butterfly clearance in manifold.
Driving, runs 180 no issue and on the highway a bit below. Can cruise around town and it will stay below 200.
Have bumped up timing a bit around 5 degrees and that seem to help, it improves acceleration which was nice.
So when it sits running for about 5 minutes, it starts to creep up to 210 and 220, once I get air flow and drive it comes down. I am not sure how high it will go but it seems it will keep going.
210 220 I don't believe is terrible, but I am concerned if I sit too long at a few lights or traffic, it's going to go higher. So my goal is to figure out how to get it to stay below 200 even in a traffic situation or long lights and stop and go.
I have done so far;
- Aluminum radiator
- Replaced the 4 blade with a 6 blade.
Some thoughts and questions;
- Being the original design in 1963 of the fan spacing to the radiator, which is very close, I wonder if the new 6 blade fan is less efficient then the orig 4 blade fan??? Wondering if the 6 blade fan is designed to be further from the radiator then it is now.
- These cars did not come with a fan shroud, is a universal shroud worth trying?
- I was considering if all else fails, trying two small 10" electric fans, thoughts if would do the trick?
Thks all!!!
Rich
Driving, runs 180 no issue and on the highway a bit below. Can cruise around town and it will stay below 200.
Have bumped up timing a bit around 5 degrees and that seem to help, it improves acceleration which was nice.
So when it sits running for about 5 minutes, it starts to creep up to 210 and 220, once I get air flow and drive it comes down. I am not sure how high it will go but it seems it will keep going.
210 220 I don't believe is terrible, but I am concerned if I sit too long at a few lights or traffic, it's going to go higher. So my goal is to figure out how to get it to stay below 200 even in a traffic situation or long lights and stop and go.
I have done so far;
- Aluminum radiator
- Replaced the 4 blade with a 6 blade.
Some thoughts and questions;
- Being the original design in 1963 of the fan spacing to the radiator, which is very close, I wonder if the new 6 blade fan is less efficient then the orig 4 blade fan??? Wondering if the 6 blade fan is designed to be further from the radiator then it is now.
- These cars did not come with a fan shroud, is a universal shroud worth trying?
- I was considering if all else fails, trying two small 10" electric fans, thoughts if would do the trick?
Thks all!!!
Rich