Other things we did to the Caddy were to fashion a heat shield to protect the carburetor from the exhaust crossover pipe immediately behind it, and to install a COOL-CARB gasket which is two aluminum plates with a sandwiched poly-core to minimize heat transfer from the intake manifold. ![]() We did this during the 2015 Glidden Tour in Oklahoma city with temps in the 100 - 115 range while driving the 1941 Cadillac which is extremely prone to vapor lock, and never experienced the issue at all (while many others succumbed to the dreaded vapor lock). This will cause your engine to smoke, and to give the appearance of "burning oil", because it really is the case, but don't believe your friends who tell you that your rings are worn out - it is only the Diesel mixture. When I cannot get No-Ethanol gas during a Tour, I use the LOWEST OCTANE AVAILABLE, and ADD 10%-15% DIESEL - readily available ! Driving the '88 'Vette to central Florida last month for a Region Tour, we paid as much as $4/gal for No-Ethanol in the Florida Panhandle, and $3/gal in the Orlando area at Wa-Wa Stations. Here we generally pay $2.29 for pure 87 octane when normal gas is around $2/gal. I've been very lucky to have good access to No-Ethanol gas locally, but my PureGas App does help when travelling. T-shirt days she would run along for 20 minutes and then I'd be limping home as she back-puffed thru the intake and ran like crap. My car ran great any time it was less than 60 outside. I'm wondering if anyone else out there is having trouble with carburetor, ignition and valve type symptoms and at a loss as to the cause. I had fit a heat shield at the onset, but eventually, after multiple roadside "sit-and-cools-offs", made a much larger shield and now she runs along fine. The Zenith, being much wider, sat fairly close to the exhaust manifold drop leg. ![]() My problem arose from my fitting a different carb to the manifold, a big iron Zenith, in place of the dreadful Schebler air-valve monster that was on there. This stuff begins to bubble at 160 degrees. ![]() Apparently, the new blends of fuel have a much lower boiling point than even just a few years ago. After spending the past few months chasing a periodic "running lean" condition with my 1928 Chandler, I finally surmised that she was experiencing vapor lock, due to the temperature of the cast iron carb.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |