Classic Mustangs List Archive

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Mail From: Jason P. Ellis (email redacted)

I went home this weekend to finish up the working of my Mustang. This is
what happened and why I don't have it right now.
I need ideas on why it would overheat.

After I drove the car for 30 miles the temp rose to the p on the temp
gauge. The timing wasn't too advanced, it was a dry warm day. I am using
new cooling system stuff. The pump has a little more umph than the old
one. The only thing that I can think of is that the air/fuel mixture is
too lean. On the Holley carb. there are only 2 adjusting screws. 1. Idle
2. air/fuel. How can I adjust this properly so that it isn't too lean?
After I rebuilt it I screwed the 2 adjusting screw in all the way and then
back off 2 full turns....that is factory isn't it. It also seemed to use a
lot of gas.

I just can't figure out why it would over heat now and not when the head
was failing and I had to floor it all the time.

************************************************************
Jason Ellis
1966 Mustang Coupe
For a Good Time Call: (email redacted)

This read-only message was archived from a public mail list.
Mail From: wrk (email redacted)

When I put a rebuilt holley on my new 351W, I didn't check the
float level. I would get hot really fast. When I checked the floats,
they were way low. This can cause lean A/F. The two screws are
only for idle adjustment. They shouldn't affect A/F except when
idling. The next thing to check is your jets, (I think). In my case,
setting floats and advancing timing has my engine running cool again.
I don't know what you did to your heads, but I believe if they flow better
than before, they are probably leaning A/F out.

Russell Kumpe
(email redacted)
70 Grande 351W-4V

*********** REPLY PARTITION ***********

On 09/29/97, at 03:40 PM, Jason P. Ellis wrote:

>I went home this weekend to finish up the working of my Mustang. This is
>what happened and why I don't have it right now.
>I need ideas on why it would overheat.
>
>After I drove the car for 30 miles the temp rose to the p on the temp
>gauge. The timing wasn't too advanced, it was a dry warm day. I am using
>new cooling system stuff. The pump has a little more umph than the old
>one. The only thing that I can think of is that the air/fuel mixture is
>too lean. On the Holley carb. there are only 2 adjusting screws. 1. Idle
>2. air/fuel. How can I adjust this properly so that it isn't too lean?
>After I rebuilt it I screwed the 2 adjusting screw in all the way and then
>back off 2 full turns....that is factory isn't it. It also seemed to use a
>lot of gas.
>
>I just can't figure out why it would over heat now and not when the head
>was failing and I had to floor it all the time.
>
>************************************************************
>Jason Ellis
>1966 Mustang Coupe
>For a Good Time Call: (email redacted)
>
>