Odd engine behavior after first shutdown of the day

[Sledge]

Skip: the cool plate assy was just too tall, insufficient underhood clearance.

And the reason my 3/32 allen did not loosend the butterfly screws is because they are actually T10 Torx. Duh. Still, I am unable to break them loose to adjust butterfly clearance. They're really in there!

eschaider: I'm not ignoring you. When budget allows it will be EFI'd.

Cheers

[eschaider]

Originally Posted by Sledge

...eschaider: I'm not ignoring you. When budget allows it will be EFI'd.

Cheers

Not a problem, Bill. I didn't think you were, The Dick and Jane stuff just popped into my head for some reason and I had to use it partly for comic relief and partly because it did shed some light on the important considerations in the decision process.


Ed

[Gaz64]

Originally Posted by Sledge

Skip: the cool plate assy was just too tall, insufficient underhood clearance.

And the reason my 3/32 allen did not loosend the butterfly screws is because they are actually T10 Torx. Duh. Still, I am unable to break them loose to adjust butterfly clearance. They're really in there!

eschaider: I'm not ignoring you. When budget allows it will be EFI'd.

Cheers

If you have T10 Torx button head screws, they are unlikely to be peened over.
They can be tight, but a GOOD quality bit will loosen them.
How about some pics of what throttle body blades and screws you have?

[jhv48]

I tried everything that’s been suggested here. Even swapped out the baseplate of the carb (it contains the butterflies) to no avail. You’ll chase your tail for years trying to eliminate the vaporizing (Boiling)but the only way to get rid of it is to move to a state that doesn’t mess with the boiling point of its gas or swap to pressurized fuel injection.
Now you know why you always see the hoods open when cobras stop for lunch.

[cycleguy55]

Originally Posted by Gaz64

If you have T10 Torx button head screws, they are unlikely to be peened over.
They can be tight, but a GOOD quality bit will loosen them.

Perhaps, but if they have Loctite on them they may need a bit of heat to loosen.

[Sledge]

Gents: after a closer look, the butterflies were not hanging up in the base plate. After ensuring the fast idle screw was off the fast idle cam, the throttle would come right back to idle. I'm not sure what else I did that might have affected the return to idle issue but it is acting normally now.

As for the crap California gas, I've built a short hood hold-open rod to allow the heat to escape, and have wrapped the fuel lines at and near the carburetor with heat shielding. Not pretty but appears to be effective. Yes a pain in the neck but better than dealing with the fuel vapor. I also obtained two small battery powered fans that I can aim at the carb and fuel lines on hotter days to help move the hot air out.

Not ideal but it works. The only investment was in the fans. The other stuff was in my pile of accumulated but unused or repurposed cobra stuff.

[cycleguy55]

Originally Posted by Sledge

Gents: after a closer look, the butterflies were not hanging up in the base plate. After ensuring the fast idle screw was off the fast idle cam, the throttle would come right back to idle. I'm not sure what else I did that might have affected the return to idle issue but it is acting normally now.

As for the crap California gas, I've built a short hood hold-open rod to allow the heat to escape, and have wrapped the fuel lines at and near the carburetor with heat shielding. Not pretty but appears to be effective. Yes a pain in the neck but better than dealing with the fuel vapor. I also obtained two small battery powered fans that I can aim at the carb and fuel lines on hotter days to help move the hot air out.

Not ideal but it works. The only investment was in the fans. The other stuff was in my pile of accumulated but unused or repurposed cobra stuff.

Good to hear things are back to normal. Hope it stays that way.