[BFix] NASCAR Aluminum Radiator Size

Mon Apr 28 11:41:04 MST 2008

Are we talking about just p[utting a cross-over between the two sides at the
back of the heads, or also T-ing in a line that feed into the retirn line
from the hot water heater? 

I've done the latter and noticed I can run a bit higher advance (about 5
degrees) with this installed. never head of just tying the two sides
together. 

Michael J. Kupec
mkupec at blueovalcorral.com
http://www.blueovalcorral.com <http://www.blueovalcorral.com/> 

They say that the mind is the first thing to go......
        I can't remember what the second thing is...

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From: bfix-bounces at broncofix.com [mailto:bfix-bounces at broncofix.com] On
Behalf Of ts
Sent: Monday, April 28, 2008 1:18 PM
To: EBE
Subject: Re: [BFix] NASCAR Aluminum Radiator Size

With the 302 in my Ranchero I had a temp gauge at both ends of the driver's
side cylinder head. The temp of the coolant at the rear of the head was
consistently 15*-25* warmer than the front of the head.
All the cross over can do is make the temp. difference the same for both
heads. There is no way that it can increase cooling to that end of the
cylinder head.

I then added tubes to the intake that joined the front and rear water ports
of the heads. The difference dropped to under 10* and the engine become less
inclined to ping under any condition.

philmoulton at comcast.net wrote: 

Very true but it is a easy fix to get rid of that hot spot.
as far as flow. a clean good flowing radiator (I do like the Ron Davis one
that I have- And I beleave are being sold by some of the major Bronco
houses)
Also a high volume waterpump and a GOOD Radiator cap.  The easiest bang for
the $ is a good Radiator cap.

Phil Moulton
cell  503-236-0060
philmoulton at comcast.net

----- Original Message ----- 
From: ts <mailto:ntsqd at yahoo.com>  
To: u100 72 <mailto:u10072 at hotmail.com>  ; mail at broncofix.com 
Sent: Monday, April 28, 2008 6:55 AM
Subject: RE: [BFix] NASCAR Aluminum Radiator Size

Doesn't matter. All that rear cross-over CAN do is equalize the temps and
coolant pressure btwn the cylinder heads. They do NOTHING for aiding in
coolant flow.

u100 72 <u10072 at hotmail.com> wrote: 

Where does the rear cross-over go to?

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From: philmoulton at comcast.net
To: cat44 at telus.net; u10072 at hotmail.com; mail at broncofix.com
Subject: Re: [BFix] NASCAR Aluminum Radiator Size
Date: Sun, 27 Apr 2008 22:24:54 -0700

Best thing one can do to cool a 351w is have that back crossover open. some
aftermarket intakes have it open, some just have the places for drilling and
tapping it and installing a crossover hose.

Phil Moulton
cell  503-236-0060
philmoulton at comcast.net

----- Original Message ----- 
From: Erik  <mailto:cat44 at telus.net> Christensen 
To: u100  <mailto:u10072 at hotmail.com> 72 ; Fix Bronco
<mailto:mail at broncofix.com>  
Sent: Sunday, April 27, 2008 7:35 PM
Subject: Re: [BFix] NASCAR Aluminum Radiator Size

Spend a lot of time at 180MPH, do you?  There's not much in 'ass-car that is
relevant to a 4x4, or anything else, for that matter. 
  Seriously though, as much frontal area as you can manage is a good thing.
too thick, and you are not as efficient, but frontal area will always be a
help if you sacrifice nothing else to gain it.
 Even more important, optimize your fan and shroud, and coolant flow. 351's
are said to have an issue at the back of the heads? not sure, as I've never
dealt with it first hand, but there is a cure (someone else who has dealt
with this feel free to expand on this)

Erik

----- Original Message ----- 
From: u100  <mailto:u10072 at hotmail.com> 72 
To: Fix  <mailto:mail at broncofix.com> Bronco 
Sent: Sunday, April 27, 2008 7:27 PM
Subject: [BFix] NASCAR Aluminum Radiator Size

Hello All,
Does anyone know what the dimensions the radiators most NASCAR teams are
running?  I am curious because (while I could care less about an
aluminum/copper radiator debate) I am looking to put even more cooling into
my truck due to the fact that I have a 351 versus the 302.  With the 302/5.0
there was never a cooling issue in the slightest like most people that run
one.  After the 351/5.8 there are times that I wish I had more cooling
surface especially out here in the Southwest desert climate.  What I am
looking into are the 27 1/2" or 31" universal units that you find the
"roundy-round" guys use.

Thanks,
Matt

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