[Roadsters] cooling the intake?

[Andy Cost]

The water in the coolant is 190 degrees and the exhaust manifold is like 800
degrees.  The water actually cools the manifold since it is subject to
radiant heat from the exhaust manifold.  The carbs have the vapor bypass
which is supposed to help with vapor lock.  You might inspect it to see if
it is working properly.

Andy

-----Original Message-----
From: datsun-roadsters-bounces at autox.team.net
[mailto:datsun-roadsters-bounces at autox.team.net] On Behalf Of Daryl Smith
Sent: Sunday, August 02, 2009 12:13 PM
To: Ed Mitchell; datsun-roadsters at autox.team.net
Subject: Re: [Roadsters] cooling the intake?

I concur with Mike Hudson,
It sounds like the ignition coil overheating. Borrow a new(ish) coil and see

if that fixes the problem.

I also agree with Pete that water through the manifold is a good thing.

Daryl

----- Original Message -----
From: "Ed Mitchell" <edmitche at gmail.com>

> Ok...Dead Betty ROLLS  :-)  Sadly I look like a bobble head in a clown car
> driving it around with my 6'2" frame.(I'm blaming it in length...not
> girth)
> freakin' head sticks up 6" over the short windshield.(it's a midlife
> crisis
> gone bad) (do I get a "Do-Over"?)
>
> But.I digress.
>
> She runs for like 30\45 minutes...then it leaves me stranded
>
> It feels like vapor lock...like she's struggling to get air or fuel.so I
> put
> an electric fuel pump on.(as if that's a cure).and shortened my tubing to
> the carbs.but still.being left stranded 'till she cools down.  (darn
> redheads)
>
> My operating temp is roughly at 190deg.and I did modify ('cause I'm such
> the
> genius) the water pipes to the intake.actually.I omitted them.  As I did
> the
> interior heater box.
>
> Is it possible I'm getting too much heat at the carbs?  Is that water flow
> thru the intake manifold necessary?  And this is indeed my problem?
>
> Any input would be greatly appreciated
> Thanks
> Ed Mitchell
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