Re: bouncy timing mark...
Kevin;
I'm 73 years old and at times thought I'd seen it all until a new wrinkle shows up. I have a numbers correct AFB carb for my 63 that I bought from a fellow NCRS friend, and I've been playing with it for over a year now trying to sort out a lean surge condition. Each time I tear it down I find something else that could be the cause. I got to the point that I got the surge out and then I had a hard hot start problem with it. Fortunately, I have a later replacement model that works super well and I have to have it on most of the time just to enjoy my car on cruise nights.
When I first got my car back out of storage in 1976, I found the mechanical advance springs were weak and the weights rusty and gummed up. The engine would not idle down and was erratic, but would go like a banshi under WOT. I fixed the distributor and then tackled the original carb. The base gasket in the rebuild kit was incorrect and I had a vacuum leak. The engine ran badly as before with the ignition condition. I looked at the gasket, the manifold and the carb base and all looked ok, but a change to a new gasket was necessary to solve the problem. To this day I don't know why.
Stu Fox
Kevin;
I'm 73 years old and at times thought I'd seen it all until a new wrinkle shows up. I have a numbers correct AFB carb for my 63 that I bought from a fellow NCRS friend, and I've been playing with it for over a year now trying to sort out a lean surge condition. Each time I tear it down I find something else that could be the cause. I got to the point that I got the surge out and then I had a hard hot start problem with it. Fortunately, I have a later replacement model that works super well and I have to have it on most of the time just to enjoy my car on cruise nights.
When I first got my car back out of storage in 1976, I found the mechanical advance springs were weak and the weights rusty and gummed up. The engine would not idle down and was erratic, but would go like a banshi under WOT. I fixed the distributor and then tackled the original carb. The base gasket in the rebuild kit was incorrect and I had a vacuum leak. The engine ran badly as before with the ignition condition. I looked at the gasket, the manifold and the carb base and all looked ok, but a change to a new gasket was necessary to solve the problem. To this day I don't know why.
Stu Fox
What I did get out of it was how critical the vacuum advance is to the proper running of my L36 and how important driving style is to performance. A quick point of clarification, does the B28 have the best vacuum advance characteristics for my '66 L36?
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