[BFix] NASCAR Aluminum Radiator Size

Mon Apr 28 10:18:14 MST 2008

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 
   To: u100 72 ; 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:        .hmmessage P {  PADDING-RIGHT: 0px; PADDING-LEFT: 0px; PADDING-BOTTOM: 0px; MARGIN: 0px; PADDING-TOP: 0px } BODY.hmmessage {  FONT-SIZE: 10pt; FONT-FAMILY: Tahoma }      Where does the rear cross-over go to?

---------------------------------
       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

               .ExternalClass .EC_hmmessage P {padding-right:0px;padding-left:0px;padding-bottom:0px;padding-top:0px;} .ExternalClass BODY.EC_hmmessage {font-size:10pt;font-family:Tahoma;}          
       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          Christensen 
         To:          u100 72          ; Fix          Bronco 
         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            72 
           To:            Fix            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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