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overheating
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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Sat Jun 18, 2011 2:48 am    Post subject: Reply with quote

Looks like basically what I said folks agree with.

Double the radiator thickness if possible since you are restricted.

Use water wetter

High pressure cap.

I was thinking along the lines of an air dam under the car like the f- bodies and vettes which could make a difference. Good point Dave.

Mechanical pump will move more water. Just at an idle the electric might have an advantage. I would go with the other mods before that.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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10sec.et
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Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Sat Jun 18, 2011 1:15 pm    Post subject: Reply with quote

well, the "water wetter" is no longer an option. it already had it in it but i think the antifreeze kept it from working as well as it should have. now the issue is that the shop owners drag car just got a new radiator (a well known name brand) and filled the system with distilled water and "water wetter" (not Redline but another brand). he made three rounds at the Super Chevy races in Dallas. when he parked it in the pits the radiator was leaking like you shot it with a shotgun. the radiator manufacturer said it was caused by the "watter wetter". i call BS but unfortunately thats not my call to make.

the radiator in the car is almost 5" thick. no way to get a thicker one. nothing bigger will fit in the space available without reengineering the front of the car. this radiator came with fans and shrouds already made for it. its supposed to be good for 800 HP.

i told them to get a better cap but i think there were too many things going on and it didnt get ordered. next week it will definitely get a good cap.

at this point, the air dam is looking like the best option. theres a flat panel that can be swapped for a scoop right under the front of the radiator. i think im waiting on parts monday so, if nothing takes priority, i will make a scoop/air dam for it.

thanks for all the suggestions. ill let you guys know what i figure out next week.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Sun Jun 19, 2011 12:25 am    Post subject: Reply with quote

Sounds like you covered your bases.

Water wetter with just water killing a radiator? That does not really make sense. If it was stated in the warranty not to use it that would be one thing but after the fact is BS. I understand it wasn't your call to make just my 2 cents on the mater. I use it in the Chevelle with anti-freeze diluted or mixed to -10F. More water than 50/50. Works so well I don't even get enough rise in temps to produce pressure. Cap is good just has so much capacity it runs chilly all the time. The new motor might be different we will see.

Let us know what happens with the Willis.

Cheers

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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SMOKEmUP
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Joined: 30 May 2002
Posts: 3169

65097.54 points


1979 Chevrolet Camaro

PostPosted: Sun Jun 19, 2011 2:15 am    Post subject: Reply with quote

Paul P wrote:
Looks like basically what I said folks agree with.

"'Wile E. Coyote - Super Genius'"

Big Grin

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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Sun Jun 19, 2011 11:36 am    Post subject: Reply with quote

SMOKEmUP wrote:

"'Wile E. Coyote - Super Genius'"

Big Grin


Ouch that hurts.... Poke retard

If we were dealing with a Hemi Roadrunner it would fit even better.

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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SMOKEmUP
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Joined: 30 May 2002
Posts: 3169

65097.54 points


1979 Chevrolet Camaro

PostPosted: Tue Jun 21, 2011 11:28 am    Post subject: Reply with quote

Sorry Paul...couldn't resist.

Back on topic.

Is it possible the radiator is too thick and not able to pull enough air through it?

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I challenge you to push yourself.
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af2
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Joined: 01 Sep 2003
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Location: grassvalley, ca
71227.76 points


1933 Willys Coupe

PostPosted: Tue Jun 21, 2011 8:02 pm    Post subject: Reply with quote

10sec.et wrote:
af2 wrote:
10sec.et wrote:
willis is a 41

You keep calling it a Camero! Shocked


Confused Camaro?????


Willys!! Laughing
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Paul P
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Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Wed Jun 22, 2011 1:22 am    Post subject: Reply with quote

af2 wrote:
10sec.et wrote:
af2 wrote:
10sec.et wrote:
willis is a 41

You keep calling it a Camero! Shocked


Confused Camaro?????


Willys!! Laughing



No matter what its called it is still overheating. self-satisfied smirk

_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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af2
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Joined: 01 Sep 2003
Posts: 5558
Location: grassvalley, ca
71227.76 points


1933 Willys Coupe

PostPosted: Wed Jun 22, 2011 9:29 pm    Post subject: Reply with quote

This is pissen me off big time!!!
I have pics somewhere of 2 40 and 41's that ran 180** in traffic with 1 being a 12.5:1 427 and 2 being a 6-71 blown 392.
Both systems ran through the 3x2 frame and back.
My Uncle's with a blown 327 runs the same set up. I only have a picture of the front and you can't see the plumbing to the frame rails.

I wish I had digital cameras when I was building these cars!
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10sec.et
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Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Wed Jun 22, 2011 10:35 pm    Post subject: Reply with quote

we havent had a chance to mess with this thing all week. still trying to finish up other cars. finish two and three more show up. a good problem to have i suppose.
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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10sec.et
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Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Sun Jun 26, 2011 2:06 am    Post subject: Reply with quote

i spent half the day today fighting this thing. bottom line is NOTHING makes any difference.

first of all, the "watter wetter" in question was actually Royal Purple's Purple Ice. supposedly there is some issue with mixing it with distilled water. thats what killed the radiator in the race car and i just flushed all of it out of the Willis. we have to put distilled in the Willis because of the Vintage Air warranty. the Redline Water Wetter is the ticket for that. it WILL NOT harm the cooling system. keep that in mind if youre putting coolant system additives in.

to summarize, it runs 190 idling in park with the hood open. 210 when driving at highway speeds. as soon as you stop and idle, the temp goes up to 220+. this is with ac off. after driving it two miles, turning around and coming back to the shop, it was slightly above 220. i turned the ac on and temp quickly started to rise to over 230. i let it idle and even put a fan directly in front of the radiator. it barely dropped the temp 5. i have tried building a air dam/scoop, adjusting timing, with/without a t-stat, made a restrictor with a 3/4" hole in place of the stat, tried running the heater. all attempts still end the same. i did notice that when its idling and it gets to 190, it will stay there until you touch the throttle. when rpms come up the temp does too. it climbs just as fast as oil pressure from idle (thus the reason i tried a restrictor). the radiator is an AutoRad unit that was designed for this car. we gave them the specs on the car and they built the radiator. the core is approximately 13x5x23. im not yet ready to condemn the radiator. this problem just seems too weird. ive never had this much trouble before. monday im going to pull the water pump and see what i can see. the engine was painted after it came back from the dyno and everything was plugged off with foam at that time. im wondering if a decent size chunk of foam is clogging something or moving to just the right spot when the coolant flow speeds up.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Paul P
Member


Joined: 15 Aug 2002
Posts: 2404
Location: Townsend, Mass.
81616.60 points


1971 Chevrolet Chevelle

PostPosted: Sun Jun 26, 2011 10:58 am    Post subject: Reply with quote

With the cap off and the restrictor in can you see good flow in the radiator? I know that the radiator is not the highest point and it might not be a good idea but when it is cool is it possible to just verify? I think you will find it soon flow could be the issue at this point. Cheers
_________________
2001 Focus 2.0 Zetec
stock cams, bolt-ons and tune
15.63@87 MPH 1/4mi

1971 - Chevelle 408 SBC N/A
6.86@102.5 MPH 1/8mi
10.78@122 MPH 1/4mi
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10sec.et
Member


Joined: 29 Mar 2006
Posts: 3473
Location: Houston,Texas
346658.74 points


1969 Oldsmobile Cutlass

PostPosted: Sun Jun 26, 2011 2:14 pm    Post subject: Reply with quote

radiator cap and t-stat are top front center of the engine and the way the housing is made, i cant really see down inside. i will take a look at that before i take it apart since its one thing i havent tried. thanks.
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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Skunkworkx
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Joined: 02 Sep 2007
Posts: 352
Location: Harford Co. Maryland
10318.16 points


1968 Chevrolet Camaro

PostPosted: Sun Jun 26, 2011 6:56 pm    Post subject: Reply with quote

Maybe the lower hose is collapsing ?

grasping at straws here Embarassed

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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Sun Jun 26, 2011 10:56 pm    Post subject: Reply with quote

I had a situation a couple years ago where the pump was a serpentine running a V belt that did a similar thing. The pump impeller was backwards.

Not saying the same BUT!!! Is the pump metal plate there?
Just another uneducated guess! Confused
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