Richmond VA...I Rebuilt my 302...Need help getting it running - Vintage Mustang Forums

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post #1 of 2 (permalink) Old 10-06-2015, 10:56 AM Thread Starter
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Richmond VA...I Rebuilt my 302...Need help getting it running

As the title states, I'm in Richmond, VA and I could use a fellow VMFers help.

I rebuilt my 302 block on my 67 coupe and i'm getting popping through the carb, fouled plugs, and no starting conditions. It's a .030 over rebuild, reused hydraulic flat tappet lifters (yes, all lifers went in same locations) and reused cam.

So, the basics......ignition, fuel, timing, compression.

1) ignition - I have spark at each plug, replaced coil because the spark was orange. I still have a predominantly orange spark as opposed to blue. I don't know how true to life the color test is, but if it's true my spark is more an orange. I replaced points and set to .020 with feeler gauge. Using old dizzy, wires, and new autolite 45's. turned engine over a few times in the dark to see if i'm getting visible crossfiring between wires, saw nothing.

2) fuel - new 600cfm holley working great. jets spray into primary venturi nicely, and fuel pressure regulator set to 4.5psi. fuel is new.

3) timing - firing order 1-5-4-2-6-3-7-8 on my 72 block. Double and triple checked wires, all is correct. I am not 180 out as I found compression stroke on #1 with my finger over plug port. I didn't use a timing light, but i guesstimated when the piston was at or nearest to top of stroke and marked the balancer accordingly.

4) compression - compression readings are 142,165,142,148,150,154,155,155. not too consistent i know

Any ideas? I certainly hope the cam isn't wiped. i used high zinc oil from Lucas for initial start up, but that shouldn't matter anyhow as i was liberal with pre-assembly lube and the cam and lifters are already mated as they are used. I'm thinking I may have a large vacuum leak at the front or rear of the intake manifold. How can i verify this without getting the engine started? I would LOVE for some on-site help if anyone lives close and has a bleeding heart and is hungry for some Pizza Hut I live 15 minutes from the RIC and I live off the Bottoms Bridge exit of I-64 exit 205.
I'm not a beer guy, but I'll get you some soda too
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post #2 of 2 (permalink) Old 10-06-2015, 12:17 PM
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Location: Colorado Springs
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Have you readjusted the valves? No guarantee that's the problem, but I have seen the exact symptoms you describe resolved by adjusting the valves. The inconsistent compression numbers also suggest the valves may not adjusted properly.

Currently working on a 1970 Mach 1 project. See it here:
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