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Baja Forums -:- AzBaja.com Members -:- Projects and Builds -:- My 69 project
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My 69 project
Tell us about your Project, Were you at in tyour build. Post Pictures etc.
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The following users give thanks for this topic 51BUG50 - Mon Nov 07, 2016 09:23 AM
Azdrtdog
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Post Post subject: My 69 project
Posted: Thu Aug 13, 2015 04:06 AM
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Looking at pics again, the ducts look like the were fighting the fans if the were on the engine side pushing air up and duct was pushing down?


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Dalton
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Post Post subject: My 69 project
Posted: Thu Aug 13, 2015 02:59 PM
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I good at 120 degree as long as I stay under 55 mph. it takes about 20mins at 65 -75 MPH to start to over heat. My fans are pullers


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Dalton
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Post Post subject: My 69 project
Posted: Thu Aug 13, 2015 03:02 PM
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I tied a bunch of strings to the back of the car to see what the wind was doing what it is I have a back draft issue at 55+mph


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Dalton
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Post Post subject: My 69 project
Posted: Thu Aug 13, 2015 03:04 PM
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I knew it was going to be an issue when I put the water pumper in.. I hoped that with the big radiator it would solve the issue. but the heat wont go away it just stays at the back of the car at 55+mph


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Dalton
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Post Post subject: My 69 project
Posted: Thu Aug 13, 2015 03:05 PM
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now I am using a radiator 1/3 the size of the one I am using and putting it into the air flow and I am willing to bet that I will have solved my issue.


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Azdrtdog
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Post Post subject: My 69 project
Posted: Thu Aug 13, 2015 03:34 PM
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I hope so, sounds like you have tried everything at this point. I had the exact same problem you are having now and could only run 55 or so, sounds like you plan to put the rad up front which is better for weight distribution any way. But just out of curiosity have you checked the lower hose temp when the motor is 210-220? Just seems like that giant radiator would be impossible to over heat with an aluminum 4 cyl. I realize air flow is important but that looks like it could cool a cast iron v8 with little problem


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Dalton
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Post Post subject: My 69 project
Posted: Fri Aug 14, 2015 01:56 AM
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No have never checked the lower hose temp yet.. this is car 4 that I have tried with not putting the radiator in the air flow... in all cases the problem was solved with changing the air flow some how.

I am going to put it on top of the car...


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Azdrtdog
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Post Post subject: My 69 project
Posted: Fri Aug 14, 2015 03:03 AM
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Outlet water temp is the key piece of this puzzle, I have a 16" square 2 core aluminum that gets no forced air with a single 14" puller with a proper shroud that never gets close to 210, dig the rail by they way! I see you have the same style radiator setup on it, what motor? I didn't find a pic that really showed it. Judging from muffler in was guessing a V motor of some sort, does it have the conventional placed therm up top? There is an inline thermostat housing avail if you want to try and put it up top and remove the factory but there kinda $$ but it will keep the motor warmer in winter for heater core


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. A little grinding and some paint makes me the welder that I aint. 1TONHOE

Last edited by Azdrtdog on Fri Aug 14, 2015 03:47 AM; edited 1 times in total
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Dalton
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Post Post subject: My 69 project
Posted: Fri Aug 14, 2015 02:59 PM
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No have never checked the lower hose temp yet.. this is car 4 that I have tried with not putting the radiator in the air flow... in all cases the problem was solved with changing the air flow some how.

I am going to put it on top of the car...


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Azdrtdog
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Post Post subject: My 69 project
Posted: Fri Aug 14, 2015 04:34 PM
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I can see you have shut down and are finished listening to practical input, still don't see how you came to the conclusion you had creep when you don't even know if the radiator return temps are.


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Dalton
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Post Post subject: My 69 project
Posted: Sat Aug 15, 2015 01:16 AM
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no ... not "Finished listening to Practical input" just frustrated and running out of hot weather for testing. I will get an output temp this weekend it will be good and hot on Saturday!


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Azdrtdog
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Post Post subject: My 69 project
Posted: Sat Aug 15, 2015 03:17 AM
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I know exactly how you feel, I went through the same fight. In my case flow was the only issue and I found this out with a temp check, I understand why it does it and I believe if the water was returning at 180 the therm would stay wide open and allow proper flow but when it returns at 120-130 it created a cold pocket around therm that choked off flow and allowed the block to get hot at higher speeds. I really hope this helps to get yor problem solved, I know my first thoughts were cooling when I was fighting mine


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Dalton
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Post Post subject: My 69 project
Posted: Sat Aug 15, 2015 02:24 PM
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9mo. out of the year I can push it hard with out any radiator creep ... but when it gets around 105 deg on up it cant dissipate the heat ... two weeks ago my AC went down and it was 112 deg on the way home. when I started to over heat I turn on the heater and was able to make it all the way home with out overheating.. I only have about one more month for R&D before the temp drops below 105ish.. The hotter it is the shorter distance on the HWY I need to drive before the problem starts to service.

its going to be good and hot today. Wink


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s1053.photobucket.com/...%20project




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Dalton
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Post Post subject: My 69 project
Posted: Sat Aug 15, 2015 02:25 PM
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9mo. out of the year I can push it hard with out any radiator creep ... but when it gets around 105 deg on up it cant dissipate the heat ... two weeks ago my AC went down and it was 112 deg on the way home. when I started to over heat I turn on the heater and was able to make it all the way home with out overheating.. I only have about one more month for R&D before the temp drops below 105ish.. The hotter it is the shorter distance on the HWY I need to drive before the problem starts to service.

its going to be good and hot today. Wink


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Click here to see more photos of My 69 Baja project:


s1053.photobucket.com/...%20project




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Azdrtdog
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Post Post subject: My 69 project
Posted: Sat Aug 15, 2015 05:58 PM
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thefactoryfiveforum.co...en-tracked
I found this looking around this morning and it kinda describes what I felt was going on


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Last edited by Azdrtdog on Sat Aug 15, 2015 06:02 PM; edited 1 times in total
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