Mike,
The original (NA) spit came with a heat shield about one foot square. It is
an aluminum piece with a fiber type material bolted to it. It does, as the
name implies, and keeps the manifold heat away from the carb. When
converting to the dual HS4's, the original heat shield will not bolt up to
the manifold -- and if it did, the size would not be correct anyway. The
proper shield for twin carbs (standard for non-NA) cars must be used. Its
narrower and longer and shields both carbs from the manifold heat. It bolts
up between the head and manifold. I got mine in the UK, kind-of like a
sandwich of thin aluminum with a fiber type material in the middle.
I don't know if I'd feel comfortable running without the shield in place --
when stopped, without any air circulation, the bowls are probably getting
pretty hot.
Regards,
Ed Hamilton
----- Original Message -----
From: Mike Perry <mikep@michindust.com>
To: Edward Hamilton <hamilton@ptd.net>; <spitfires@autox.team.net>
Sent: Tuesday, September 21, 1999 8:34 AM
Subject: Re: heat troubles?
>
> HEAT SHIELD????!!!
> -----Original Message-----
> From: Edward Hamilton <hamilton@ptd.net>
> To: Mike Perry <mikep@michindust.com>; spitfires@autox.team.net
> <spitfires@autox.team.net>
> Date: Tuesday, September 21, 1999 8:17 AM
> Subject: Re: heat troubles?
>
>
> >Do you have the heat sheild in place?
> >
> >Ed Hamilton
> >----- Original Message -----
> >From: Mike Perry <mikep@michindust.com>
> >To: <spitfires@autox.team.net>
> >Sent: Tuesday, September 21, 1999 7:15 AM
> >Subject: heat troubles?
> >
> >
> >>
> >> Fellow listers,
> >>
> >> Since doing my carb transplant (dual hs4s), my spit has been running
> >better
> >> than ever, but with one circumstance causing me concern:
> >>
> >> When I get in traffic, the car will begin to hesitate, and sometimes
even
> >> backfire. Once I get back up to speed, everything works great again.
I
> >> don't actually have troubles with the motor temp, as it stays in the
> >normal
> >> range. Further details: the car does have headers.
> >>
> >> Am I sucking in air which is too hot, or perhaps are my fuel bowls
and/or
> >> jets heating up too much? Has anyone else suffered from this & come up
> >with
> >> a solution?
> >>
> >> Thanks
> >>
> >> Mike
> >>
> >>
> >
>
>
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