[Tigers] Holley PSI

[Mark Rense]

Jay, a significant amount of the heat coming off the muffler is radiant
energy, the heat shield really helps to block that and keep the pump
temperature lower. The best shield would be mounted about an inch above the
muffler, this will block the radiant heat, direct hot air away from the
pump and also allow air flow at speed to cool the muffler and the shield.

I have a high flow Holley pump on one of my Tigers and it hangs down
several inches below the original pump position but with a heat shield
installed there is no issue with overheating.
Bugz

On Wednesday, January 22, 2014, Jay Laifman <jay.laifman at gmail.com> wrote:

> The Carter mounts exactly the same, if not a little higher than the stock
> one, because it has a smaller ID.
>
> I'm not quite sure what type of heat shield would do anything.  Heat rises.
>  So once the heat hits the shield, the only place it has to go is still up.
>  That said, Dr. Mayf indicated that the air flow through there should help
> keep the heat flowing out - except of course at idle!
>
> Maybe the right type of shield would work as a heat sink and hold some of
> the heat from idle until the air comes through again when the car gets
> moving.  But, this is a lot of conjecture on my part.
>
> I know the real answer is to move the pump down and back, like on the back
> side of the spare tire hole.
>
>
> On Wed, Jan 22, 2014 at 12:19 PM, <genepadgett at comcast.net <javascript:;>>
> wrote:
>
> > Just a reminder to put some sort of heat shielding between the pump and
> > muffler if you do not already have some.  The carter and most other pumps
> > will hang down much closer to the muffler than the SU and suffer
> shortened
> > life due to the high heat soak without some sort of shielding.   Good
> idea
> > to do that even with a SU installed.
> > Tim Ronak did a very nice article on all of this in the CAT Tiger Tales a
> > few years ago.
> >
> > Gene
> >
> > ------------------------------
> > *From: *"Jay Laifman" <jay.laifman at gmail.com <javascript:;>>
> > *To: *rfraser at bluefrog.com <javascript:;>
> > *Cc: *"Tiger's Den" <tigers at autox.team.net <javascript:;>>
> > *Sent: *Wednesday, January 22, 2014 1:58:06 PM
> > *Subject: *Re: [Tigers] Holley PSI
> >
> > Thanks!  According to Carter, it's 30 gph.
> >
> > But, I'm going to have to try Tom's Conejo Grade test - at least a few
> > times, just to make sure.  :-)
> >
> > Jay
> >
> >
> > On Wed, Jan 22, 2014 at 10:49 AM, Ron Fraser <rfraser at bluefrog.com<javascript:;>>
> wrote:
> >
> > > Jay
> > >         You should also look at the gallons per hour number.
> > > Stock SU pump is about 2 psi with 15 gallons per hour.   15 gph will
> > > support
> > > about 200 hp engine.
> > >
> > > I believe you are OK as long as your pump delivers at least 15 gph and
> > the
> > > pressure is at least 2psi.
> > >
> > > If it run well your good; if it runs poorly, the system needs work.
> > >
> > > Ron Fraser
> > >
> > > -----Original Message-----
> > > From: tigers-bounces at autox.team.net <javascript:;> [mailto:
> > tigers-bounces at autox.team.net <javascript:;>]
> > > On Behalf Of Jay Laifman
> > > Sent: Wednesday, January 22, 2014 1:35 PM
> > > To: Tiger's Den
> > > Subject: [Tigers] Holley PSI
> > >
> > >
> > > I just checked Holley's web site.  My carb: the 465 CFM Four barrel,
> > should
> > > have 6 psi at idle and 4 psi at top speed.
> > >
> > > I don't think the Carter I had goes that high - as I bought it for my
> > > Porsche 912.  I'll check it with a gauge this weekend.
> > >
> > > Jay
> > > _______________________________________________
> > >
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