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Jeep-Short Wheelbase All discussion of short wheelbase Jeeps: CJ, TJ, YJ and JK

 
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post #1 of (permalink) Old 05-22-2007, 10:28 AM Thread Starter
I Might Just Know What I'm Talking About
 
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Getting to Know Your Jeep

A lot of the questions on this board are generated because someone thinks something is wrong with their jeep....with one of the common ones being how hot is too hot.

I'm a firm believer in getting under the jeep and looking at things...taking pictures..etc. When I did my SBC swap, it took plenty of pics of the jeep as I tore it apart...those came in handy as I started putting it back together.

Now that the swap is done and I'm driving it, I need to figure out my baseline...in other words, what is ok and what is not. I changed a lot of things and I want to make sure that I'm not running borderline on something.

Take this morning...I hooked up my OBDI scanner and monitored my engine temp while I drove to work. I did both fwy and city streets and I did not turn on my electric fan. I realized real quick that the engine has the wrong t-stat in it...on the fwy it never got over 184. I can tell when the t-stat opens because I get a warm blast of up up through the big hole where the tranny is. This 186 might explain why I think my MPG is not where I thought it should be. It was also good to see that I never got over 200 deg on the street while sitting at lights and the fan not running...it also means that my stock CJ temp gauge is basically about right.

I am also carrying around a 2 gal jug of gas...and letting my tank run dry...I want to see where my gas gauge really reads when I run out of gas....and I want to see how well that electric fuel pump mounted on the frame rail will operate at these low fuel levels...including re-priming the fuel system when I run out.

All part of getting to know my jeep......

AKA DDawg16
84 CJ7, SOA, 5.7LTBI, 4L60E, 35"x12.5, 4.10 gears, F/Det, R/ARB, Full Roll Cage,
D44 Flat top in progress...
Link to my Frame up Restore
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post #2 of (permalink) Old 05-22-2007, 11:57 AM
Way Outta Control
 
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However... the siphon tube best be up off the bottom of the tank or you can suck debris into the fuel pump and cause it to die... a common problem with electronic fuel pumps (unless...like mine... you filter the fuel before it gets to the pump).
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post #3 of (permalink) Old 05-22-2007, 12:08 PM Thread Starter
I Might Just Know What I'm Talking About
 
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My filter is after the fact....but the tank is clean and I have a good screen on the pickup...
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File Type: jpg Fuel Pump and Filter Small.jpg (84.0 KB, 4 views)

AKA DDawg16
84 CJ7, SOA, 5.7LTBI, 4L60E, 35"x12.5, 4.10 gears, F/Det, R/ARB, Full Roll Cage,
D44 Flat top in progress...
Link to my Frame up Restore
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