1961 G12 jetting mystery

tpeever · Post by **tpeever** » Wed Sep 21, 2011 2:20 am

quote:
Further thought on this subject.

There should be a 1/16" heat insulation spacer between the carb and manifold. Its absence could cause partial fuel evaporation when hot which might explain the symptoms of lean running.

Paper gasket between spacer and manifold, just the carb "O" ring between carb and spacer.

Yes, that is more-or-less how it is currently set up but I do not have a paper gasket between spacer and manifold. Is this necessary? The spacer I have is about 1/8" thick and is like a gasket.

petert120r · Post by **petert120r** » Wed Sep 21, 2011 11:14 am

Sounds about right. Paper gasket ideal but not vital.

greasemonkey62 · Post by **greasemonkey62** » Sun Sep 25, 2011 11:04 am

quote:
Further thought on this subject.

There should be a 1/16" heat insulation spacer between the carb and manifold. Its absence could cause partial fuel evaporation when hot which might explain the symptoms of lean running.

Paper gasket between spacer and manifold, just the carb "O" ring between carb and spacer.

yes mine has the insulator spacer fitted too, she is running like a dream just now