Offshoreonly.com - Vacuum gauge installation 500hp carb

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the deep

01-19-2013 02:04 PM

Quote:

Originally Posted by speedfever (Post 3851731)

I bought the boat last fall. At one time in its life it had blower motors and it had fuel pressure and vacuum/boost gauges that were left in the console but are not hooked up. I want to hook these gauges up so everything works.

I like it when they read on the BOOST side ! :evilb:

speedfever

01-19-2013 02:05 PM

Quote:

Originally Posted by MILD THUNDER (Post 3851734)

I may have some fuel psi electric senders available, might go mechanical on my fuel psi.

My fuel pressure gauges are Gaffrig 0-15 psi.

FIXX	01-19-2013 02:05 PM

if its a true hp500 use the port behind the carberator thats threaded into the manifold..

speedfever

01-19-2013 02:05 PM

Quote:

Originally Posted by the deep (Post 3851740)

I like it when they read on the BOOST side ! :evilb:

That would be nice........lol

MILD THUNDER

01-19-2013 02:06 PM

Quote:

Originally Posted by speedfever (Post 3851741)

My fuel pressure gauges are Gaffrig 0-15 psi.

mine too

the deep

01-19-2013 02:10 PM

Quote:

Originally Posted by mrfixxall (Post 3851743)

if its a true hp500 use the port behind the carberator thats threaded into the manifold..

That's the one used for the PCV valve bro . The one on the front side has a plug in it .

speedfever

01-19-2013 02:29 PM

I originally posted this question at 2:30 pm today. By 3:00, I have got a bunch of replies to help me with this. This is why this is such a great website !!!!!! Thanks everyone for the replies. It looks like I have several options to check out. I will post what I find.

speedfever

01-20-2013 12:30 PM

Quote:

Originally Posted by the deep (Post 3851725)

At the very top of the intake manifold in the front there is a plug , pull it out and screw in the proper size nipple . If you use the one on the carb make sure it is located below the throttle plates . Why do you want to measure vacuum ?

I found this plug. It is right under the baseplate at the front of the carb. 3/8 npt brass plug. This is the easy fix that I am looking for to hook the gauges up. I found the brass fitting that I need at Lowes.

Thanks for the tip
jeff

JoCo32

01-22-2013 06:18 AM

I have the exact same boat and setup. Fountain used the port under the front of the carburetor baseplate. Mine had 1/8" clear plastic tubing running to the guages. I removed it all so if you need anything let me know.

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