perf-list-digest Friday, August 21 1998 Volume 01 : Number 065



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Ford Truck Enthusiasts - Performance
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In this issue:

FTE Perf - Re: Cooling
FTE Perf - engine cooling
RE: FTE Perf - Re: Temps
FTE Perf - more cooling stuff - after the last pull
Re: FTE Perf - more cooling stuff - after the last pull
RE: FTE Perf - more cooling stuff - after the last pull

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Date: Thu, 20 Aug 1998 08:14:26 -0500
From: lordjanusz juno.com (Paul M Radecki)
Subject: FTE Perf - Re: Cooling

>I fail to see the convection current theory in the internal engine
>cooling
>system flow.
>IME The pressure in the block can easily reach past 60 PSI (MOROSO
>Pump)under
>3000 RPM. That kind of pressure (or any) when combined with flow will
>c*ancel
>out the convection flow. The pressures in the head over the combustion
>chamber and around the exhaust port can reach multiple hundreds of PSI
>if
>the coolant should flash to steam; which can and does happen even on
>street
>engines.

I'm no expert, but I do know that the latest nuclear submarines operate
their reactors on convection cooling alone (pumps are too noisy). You'd
have to engineer the h*ll out of it, but I'd venture to propose that a
convection cooled truck engine is possible **in theory**. Just my .02,
lordjanusz

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Date: Thu, 20 Aug 1998 09:09:23 -0500
From: balusek aud.alcatel.com (Danny Balusek)
Subject: FTE Perf - engine cooling

I've been following the thread about different engine cooling
theories and techniques and picked up on a comment that one
person made about drilling holes in a stock thermostat. Seems like the
results would depend on a multitude of variables like horsepower,
average RPM, ambient temperature, and engine modifications.
I've heard other people talk about doing this but they never explained
the theory behing it.

There must be something to it because I have a 2.9L Bronco II
and the stock thermostat has an extra 3/16" hole with a one way
check ball in it. I always wondered what this was for.


All comments appreciated,
Danny B.
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Date: Thu, 20 Aug 1998 10:42:24 -0400
From: Sleddog
Subject: RE: FTE Perf - Re: Temps

reverse flow is helpful sometimes i understand, but getting front/back flow works very well to improve the cooling.

went to another pull on tuesday night. see post for that about cooling.

sleddog

- ----------
From: Steve & Rockette[SMTP:canzus seanet.com]
Sent: Tuesday, August 18, 1998 1:41 PM
To: perf-list ford-trucks.com
Subject: RE: FTE Perf - Re: Temps

At 10:08 AM 18/8/98 -0400, you wrote:
>too bad mine is filled with concrete past those holes.
>
>sleddog
>
>-----
> The real trick would be to use the expansion plug holes for
>cooling,
>

Okay, how about cooling the heads first???

Steve & Rockette...Lifes a beach
'63 F100 Longbox
'94 Taurus SHO - SWMBO's new car!!
and since most are listing all thier cars:
'72 Capri - Rockette's Toy, aka - SWMBO
'73 Capri - My Toy / Daily Driver
'73 MGB-GT Our Toy
'70 Torino GT My "New" Car


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Date: Thu, 20 Aug 1998 11:14:17 -0400
From: Sleddog
Subject: FTE Perf - more cooling stuff - after the last pull

ran a pull up in harford pa on tuesday night. actually, got to run twice!
was going to put a set of 94/84 jets in, but all i could find was 97's and
88's. these are big jets my freinds! (was 70/80. well actually, was 70/80
written on bowls, but was 72/82 inside!)

so, put them in before the pull and guess what. 2 things came up. one, it
runs cooler. alot cooler! plus, it was a cool night. i started runs at
180 or so, and finished at under 210.

the mixture was still lean though. it glowed the pipes the whole way, and
very bright.

thinking now, that this carb will never be able to flow the juice enough.
looks like i will need a MUCH bigger one. also, run up to 6000 rpms. i
really think the carb is restricting it. it should pull much more
especially with the low final gearing i had with the tires i used.

I think i may be able to keep it all cool with this electric pump, if i can
get the jetting right. perhaps some other things may be required in the
future, but for now i'll wait on running lines from the back of the head.

i ran against super stock trucks (not street legal-mine has a inspection
sticker) and took out a few of them. didn't place, but feel confidant with
its's performance. i know what i need to do. will also go bigger tire for
the last few pulls.

sleddog


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Date: Thu, 20 Aug 1998 08:23:41 -0700
From: Keith Srb
Subject: Re: FTE Perf - more cooling stuff - after the last pull

At 11:14 AM 8/20/98 -0400, you wrote:
>ran a pull up in harford pa on tuesday night. actually, got to run twice!

So, where are the Pictures???? :)

Later
Keith
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Date: Thu, 20 Aug 1998 11:50:18 -0400
From: Sleddog
Subject: RE: FTE Perf - more cooling stuff - after the last pull

i am working on getting some. nancy took a few, but it was with a
disposable camera. on tuesday, we got some vidoe footage, but noone had a
camera. :(

anyway, i have been so busy lately, that even if i had them in my hands -
no time to scan them yet. i have even been deleting most of my mail
without reading. soon, i hope to have more free time.

sleddog

- ----------
From: Keith Srb[SMTP:herbie ford-trucks.com]
Sent: Thursday, August 20, 1998 11:23 AM
To: perf-list ford-trucks.com
Subject: Re: FTE Perf - more cooling stuff - after the last pull

At 11:14 AM 8/20/98 -0400, you wrote:
>ran a pull up in harford pa on tuesday night. actually, got to run twice!

So, where are the Pictures???? :)

Later
Keith
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End of perf-list-digest V1 #65
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