stangeba

Have you verified the pressure with a known good gauge?

Thanks Ian! Perhaps part of the reason I have never changed from points and condenser is I didn't know if my tachometer would still work. My car runs great, like always. Last problem I had was bad spark plug wires causing a misfire under load. When checking resistance, 6 of 8 wires were too high and the coil wire was high. Bruce

Do the points replacement systems allow the factory tachometer to function properly? Second to that, does a GM HEI (that many here use) allow the tachometer to work properly?

It's a points replacement system. It's NOT HEI so there is no gain in spark voltage. If it fails, where can you get replacement parts quickly?

My brother in-law, the retired Chevy engineer, didn't think the 80 PSI was causing it (although that is a bit high) or the 1 turn. He asked if 80 was a true reading with a good gauge and that it wasn't a 0 - 80 PSI gauge that was maxed out and running even higher. As to the 1/2 turn after zero lash (that I have always used) he said 1/4 or 1/2 or 1 or 2 even 3 turns would work the same on an OEM valve train system. Sorry I couldn't be of more help. The problem he had with his Pontiac OHC 6 (also could happen on a Vega OHC 4 Cyl) can't happen to our Chevy OHV V8 engines (or Ford or Chrysler) because of the valve train design.

Too much oil pressure can do this. Be careful that your oil filter doesn't blow out. I have a call into my brother in-law a retired Chevy engineer. This just happened to his 67 Firebird with the OHC 6 cyl after a rebuild. The oil pump blow off valve was sticking. You should see the oil filter! Bruce

Welcome! Too much oil pressure? Adjusted too tight? Give us more information, engine, cam & lifter brand and age. History on the engine. Bruce

Nice! I just have an old envelope someplace with lot's of receipts in it.

I've been using it for ?? years, since the first week it was released. Got so sick of IE and it's sloooow loading. I use G-mail all the time now also and like it. Bruce

I think I remember my 71 having the made in Canada Maple Leaf on the left door. Bruce

Don't have em, never did. Bruce

My first thought was the coolant spraying all over the engine got into the dist cap or somehow caused condensation to form inside the cap. When running it is cross firing and arching all over (perhaps from the wire boots too) the place. Look for sparks in the dark when the engine is under load anywhere near the plugs, wires and cap. Good luck. Bruce

This may be unbelievable to all of us but I worked on a low mileage Lincoln back in the 70's that had a bent crankshaft caused by the owner spraying the entire can of carb cleaner into his 460 4BBL. After emptying the can into the carb, with the engine OFF, he attempted to start the engine, but since fluid doesn't compress, like air, it hydraulicked the engine. Bruce

I believe the two (4) larger brackets are for the bumper. The smaller set I don't recognize. Bruce

Great! Good news.

tried it just now Wed 4:30 PM

Not sure but it sounds like the booster diaphragm may be leaking or the check valve isn't "checking" like it should. The check valve is the easier thing to check and or replace. It's a one way valve that keeps vacuum in the booster for one or two applications after the engine shuts off. Bruce

Cool! Everyone should check this on their vehicle (including me) Bet it doesn't help the fuel economy. ha ha

Here is a link that may help with the secondary lock out feature. Lock Out

Make sure the Carb is actually opening all the way or getting "Wide Open Throttle". There could be a problem with the cable or peddle or too thick of carpet on the floor or a thick floor mat or bent linkage. With help from someone else, with the engine OFF, push the peddle to the floor and hold it there while you see if, in fact, the lower mechanical part of the secondaries are fully open, by using your hand to try to open it further. The top flap won't open so don't be concerned about that. Now that I wrote this, I want to go check my WOT to see how my new carpet may have affected it. To the rest of you reading this, have you checked your W.O.T. lately? Bruce

You know it's not opening because......... low power or you can't see it open when revved up or??? I still assume you are talking about the top (vacuum operated) plate not the (mechanical) bottom. Many re builder's do a very poor job of rebuilding carbs. Just because it's a fresh re-build doesn't make it good. Bruce

You know it's not opening because .... I assume you are talking about the top (vacuum operated) plate not the (mechanical)bottom. I first thought the same thing, the choke / secondary "LOCK OUT" was holding them closed. This happens when the choke is even slightly closed. What about the vacuum brake / dash pot on the passenger side of the front of the carb, does the linkage attached to it allow for free travel? Any binding or sticking in the top secondary plate? Bruce

I just checked my speed and got: 11.45 Mbps download and 1.06 Mbps upload speed. I read the Upper case M is different than the lower case m for amount of data (Mega v.s micro? something) Is that any good? Do I need a better 4 BBL carburetor or something?