Msd Vacuum Advance Hose Size

These msd vacuum advance mechanisms are designed to replace the vacuum advance chamber on the msd hei distributor.

Msd vacuum advance hose size.

Find msd ignition 8463 msd vacuum advance mechanisms and get free shipping on orders over 99 at summit racing. Now switch the vacuum advance to a direct source of vacuum and again check the idle rpm. You can t fix stupid but you can fix ignorance 62 chevy ii turbo 6. 7 32 on 1 4 5 32 on 3 16 etc.

Not sure of the size but it is smaller than american vacuum advance hose. Most automotive vacuum hoses use 1 32 smaller id than the od of the hose nipple to make a tight fit. At idle the engine needs additional spark advance in order to fire that lean diluted mixture earlier in order to develop maximum cylinder pressure at the proper point so the vacuum advance can connected to manifold vacuum not ported vacuum more on that aberration later is activated by the high manifold vacuum and adds about 15 degrees of spark advance on top of the initial static. What port do i hook the distributor line to.

Number 724 16 is a vacuum advance unit that will pull 16 degrees of vacuum advance maximum. Msd streetfire distributor edelbrock carb. We ll bet money the rpm increased. Here s my set up if it helps.

I have been reading up on it. Seems to be a debate on full or timed vacuum. Starts hg vacuum is measured in inches of mercury mercury has the chemical symbol hg thus manifold vacuum is measured and referred to as hg. Do not forget to plug the original vacuum advance hose.

They are made of steel and feature cadmium plating for maximum durability. 10 5 1 355 and here are the cam specs. I went to napa and purchased next to the smallest slightly larger than windshield washer hose. Figure 5 advance stop bushing chart.

I have looked online and found that there are different sizes. What size vacuum line do i need. Seems like finding an answer to that is pretty tough. Vacuum advance control unit will pull in at its maximum i e.

Does anyone know what are the correct vacuum lines i should get and where i can order them. Plug the vacuum advance into a ported vacuum source and check the idle rpm. I am needing to get vacum lines for my holley 4160 and i am using a vacuum advance mopar performance distributer.