Off-Road Forums & Discussion Groups

Off-Road Forums & Discussion Groups (https://forums.off-road.com/forum.php)
-   Jeep-Short Wheelbase (https://forums.off-road.com/jeep-short-wheelbase/)
-   -   Cooling Problem. Any suggestions? (https://forums.off-road.com/jeep-short-wheelbase/88101-cooling-problem-any-suggestions.html)

**DONOTDELETE** 09-22-2001 05:20 PM

Cooling Problem. Any suggestions?
 
Ok,

I have a 84 CJ7 with a chevy 305, 3 core Jeep radiator with tranny cooler, and it made for a chevy config. I have a electric fan and a 160 thermostat. Its running around 210-220... WHY?

I would say that the fan is not big enough however I have used this fan before on my AMC 304 and never had a problem.

Any suggestions? Thanks.

84CJ7 SOA,35's,OnboardAir,Dual winches,Full Cage,Snorkels, and more
OverMost 4WD Club
JerseyWheelers Club

**DONOTDELETE** 09-22-2001 07:51 PM

Re: Cooling Problem. Any suggestions?
 
Sounds as if you are having a problem with the fan....possibly not enough air flow. Have you not checked the cap? Also have a look at the hoses to make sure that they do not collapse during throttle. I know this is general info but it is often the little things.

JpShp
http://www.jeep-shop.com



IN2DEEP 09-22-2001 08:19 PM

Re: Cooling Problem. Any suggestions?
 
How about the thermostat being too low temp? I would guess that the thermostat is opening, then remaining open, not allowing the water to sit in the radiator and cool.

Most stock applications run about 195 degrees plus it's summer time.

Plus it's a cheap easy test. Usually you can replace a thermostat in 30 minutes, the re-evaluate.

DREW
IN2DEEP 78 CJ5

**DONOTDELETE** 09-22-2001 11:37 PM

Re: Cooling Problem. Any suggestions?
 
JerseyWheeler,
You might also want to check your coolant mix (50/50 mix), and remove any grill cover (that will restrict air flows to your radiator). What is the CFM of your electric fan?
My problem with my stock 2 row radiator with Flex-A-Lite electric fans is only when I'm sitting in summer traffic jams. But, once I turn on my 3rd electric fan (10" 950CFM) and I could see my temp starting to stable or drop. You could say that I'm not getting enough air flow with tired 3 years old Flex-A-Lite fans. [img]/wwwthreads_images/icons/tongue.gif[/img]

Nycjeep88 [img]/wwwthreads_images/icons/cool.gif[/img][img]/wwwthreads_images/icons/smile.gif[/img][img]/wwwthreads_images/icons/wink.gif[/img]

Let's go baja in NYC and see how well your suspension holds up.... [img]/wwwthreads_images/icons/smile.gif[/img]

JeepnGreg 09-22-2001 11:38 PM

Re: Cooling Problem. Any suggestions?
 
how big of an electric fan are you using?

i would imagine since you are using a v8 you'd want 16 inches or so of fan, or maybe two smaller ones....



<font color=red>Jeep'n Greg</font color=red>
1985 CJ7 in pieces right now

CJDave 09-23-2001 08:23 AM

Re: Cooling Problem. Any suggestions?
 
[img]/wwwthreads_images/icons/crazy.gif[/img] Having owned a CRAPLOAD of 350 SB Chev-lays, I have come to understand that the engine does not "burp" well. The SBs have a tendency to trap air and not allow for the coolant to fill all of the engine/radiator spaces. FOR THAT REASON, some Chev-Lays return the heater loop to the top end of the radiator tank so the air can find it's way out and the engine can "burp". This can make the difference between cooling and not cooling on a hard pull like we just made with the 350SB powered "Super Puller".[img]/wwwthreads_images/icons/crazy.gif[/img]

CJDave
A Jeep Skunkworks run by Moonguys[img]/wwwthreads_images/icons/wink.gif[/img][img]/wwwthreads_images/icons/tongue.gif[/img][img]/wwwthreads_images/icons/laugh.gif[/img], buildin' the ultimate SNOJEEP!

**DONOTDELETE** 09-24-2001 08:12 AM

Re: Cooling Problem. Any suggestions?
 
Well, I'd agree with you but it worked great on the 304... Would there be a big difference with the 304/305? Thanks

84CJ7 SOA,35's,OnboardAir,Dual winches,Full Cage,Snorkels, and more
OverMost 4WD Club
JerseyWheelers Club

CJDave 09-24-2001 11:00 AM

Re: Cooling Problem. Any suggestions?
 
[img]/wwwthreads_images/icons/tongue.gif[/img] Well, what do you know! I was JUST reading the latest SUMMIT catalog and there is a Deadenbear item that helps a SB Shev-Lay "Burp" better. Here I thought that BURP was my own proprietory term.[img]/wwwthreads_images/icons/cool.gif[/img] I'm telling you, the problem is in the BURP, not the fan, or the radiator.[img]/wwwthreads_images/icons/crazy.gif[/img] If you are a smart Joyzee dweller, you will rig a burp line from an available plug on the front of the intake manifold to the top tank of the heater and try that![img]/wwwthreads_images/icons/wink.gif[/img]BTW.....burp lines are COMMON on industrial and stationary engines.[img]/wwwthreads_images/icons/smile.gif[/img] GET INDUSTRIAL!!!!![img]/wwwthreads_images/icons/crazy.gif[/img]

CJDave
A Jeep Skunkworks run by Moonguys[img]/wwwthreads_images/icons/wink.gif[/img][img]/wwwthreads_images/icons/tongue.gif[/img][img]/wwwthreads_images/icons/laugh.gif[/img], buildin' the ultimate SNOJEEP!

**DONOTDELETE** 09-24-2001 11:38 AM

Re: Cooling Problem. Any suggestions?
 
Dave,

I understand the intake part but what do you mean on top of the heater? Thanks.

84CJ7 SOA,35's,OnboardAir,Dual winches,Full Cage,Snorkels, and more
OverMost 4WD Club
JerseyWheelers Club

CJDave 09-24-2001 12:23 PM

Re: Cooling Problem. Any suggestions?
 
[img]/wwwthreads_images/icons/smile.gif[/img] If you are running a heater, return the heater outlet hose.....that's the top hose......to the radiator tank. On some Shivel-A radiators there is a 3/4" nipple for that purpose. You could have a port installed on your radiator if there is none. So the circuit is: OUT of the intake manifold....TO the heater....FROM the heater to the top tank of the radiator. All other hoses stay where they are.....you plug the port on the water pump.[img]/wwwthreads_images/icons/tongue.gif[/img] END of problems![img]/wwwthreads_images/icons/crazy.gif[/img]

CJDave
A Jeep Skunkworks run by Moonguys[img]/wwwthreads_images/icons/wink.gif[/img][img]/wwwthreads_images/icons/tongue.gif[/img][img]/wwwthreads_images/icons/laugh.gif[/img], buildin' the ultimate SNOJEEP!


All times are GMT -5. The time now is 04:09 AM.

Powered by vBulletin® Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.

User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2021 DragonByte Technologies Ltd.
Copyright 1994-2009, VerticalScope Inc. // Off Road forums & discussion groups sitemap
side by side | atv | dirtbike | snowmobile | sandsport | competition | land use | Jeep | Toyota | Ford | GM

 
For the best viewing experience please update your browser to Google Chrome