67 L71 Carburetor temperature

[Kerry A.]

Re: 67 L71 Carburetor temparture

You aren't kidding they get hot. Is that a standard carb base gasket or a phonelic spacer? I've installed phonelic spacers on mine and it helped a bit but nothing to write home about. I don't know what's going on with my car. Except for blocking off the heat risers like you did, I've tried all of the suggestions on the board and more. Although I did make a little headway yesterday when I adjusted the float levels. Thank you for your information. It's very much appreciated.

[Frank D.]

Re: 67 L71 Carburetor temparture

The phenolic spacers help but blocking off the intake risers are the most effective workaround I've encountered, and, verified with an I/R heat gun taking cab bowl temps... Heat soak/percolation is a persnickety, annoying problem as is vapor lock.

[Tom G.]

Re: 67 L71 Carburetor temparture

Kerry, per your comment 'gasping for gas' #5. Are you sure your gas cap is venting properly? A 45 minute run would burn more than a couple of gallons and cause a vacumn in the tank. Might affect fuel pump pressure at idle.

[Kerry A.]

Re: 67 L71 Carburetor temparture

Tom, That's very good question. I have a spare cap that I can try. At this point I'm willing to try just about anything. If it ever stops raining here in Wisconsin I plan on testing it again as I did make adjustments to the float levels. I will keep you posted. Thank you for the input.

[Kerry A.]

Re: 67 L71 Carburetor temparture

I hate to pull the intake but if all else fails that might be the next step. Of all of my years with not only Corvettes, I've never experienced such an irritating issue. Even my 64 GTO tri-power has never given me this kind of issue.

[William F.]

Re: 67 L71 Carburetor temperature

I have the 1967 Chevrolet shop manual which covers my '67 Corvette but I don't have the shop manual in the photo that is specifically for Corvettes. Where can I buy one?
thanks

[Duke W.]

Re: 67 L71 Carburetor temperature

Beginning in 1966 all pass. car model lines were combined into a set of manuals - Chassis Service Manual (CSM), Chassis Overhaul Manual (COM), and Body Manual, so you need all three to cover all service/overhaul procedures for your specific model year from 1966-up. For example, the procedure for removing and installing a starter motor is in the CSM, and overhaul of the starter motor is in the COM.

Prior to this all Corvette service/overhaul procedures including the body was covered in a single manual - ST12 for solid axle models and the 1963 Corvette Shop Manual for '63 models along with '64 and '65 Supplements to cover changes for the '64 and '65 model years.

They should all be available at the NCRS store, various Corvette parts vendors, or the publisher, Helm, Inc.

Duke

[Frank D.]

Re: 67 L71 Carburetor temperature

Prior to this all Corvette service/overhaul procedures including the body was covered in a single manual - ST12 for solid axle models

Uh - not quite.....the C1s generally required the year specific Passenger Car Manual to cover all the bases with common components; like generators, starters and brakes...

The ST-12 will only refer you to that manual for those items...

[Kerry A.]

Re: 67 L71 Carburetor temperature

Duke, I have the CSM and COM but I'm not clear what you mean by the "Body Manual". Unless it's under a different name I don't see it in the NCRS store. Helm only goes back to 1969. Checked Corvette America but there isn't a manual called "Body Manual". Instead of continue browsing websites in the blind I thought I'd reach out to you for more information. Thank you.

[Duke W.]

Re: 67 L71 Carburetor temperature

The 1963 Corvette Shop manual covered all body service information, but the later CSMs, COMs, didn't. So I'm pretty sure there was a separate body manual for each year after 1965 that covered all pass. car models, including Corvette. Maybe someone else can confirm, but maybe it's out of print.

If you can't find one for your model year the '63 Corvette Shop manual is probably the best that you can do. The body was basically the same through '67 with only relatively minor changes. Things like the window and vent window mechanisms were essentially the same for all C2s.

Duke

[Kerry A.]

Re: 67 L71 Carburetor temperature

Thanks Duke.