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overheating II; upper hose
Topic Started: Jul 31 2011, 01:45 PM (632 Views)
yjcanibul
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installed new upper rad hose - same length shape as PO installed one

looking things over today now thinking I should cut 4 inches off this baby - as i could never fill the system to get air out since it extends well above rad

what the effect of air in the system - steam super heating ?

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57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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jyotin
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Taking a little out of the upper hose to cause a "gravity feed" to the engine is absolutely the thing to do.

One cannot fill the system completely if there is a built in air bubble.

Keep the correct pressure cap -- check the manual, I think it's 7 pounds??

I usually drill a small hole in the thermostat - I don't know if that does any good, but it feels like the right thing to do.

I'd bet that the overheating problem goes away with the trimmed up top hose.

j


It's just my luck that something good is going to happen to me today.
54 - 3B - down on the farm
67 - cj6 - former state of Alabama vehicle
?? - cj5 T98a - made from spare parts - Ford tractor blue
?? - cj5 T98a - made from spare parts - Jeep green
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oldtime
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X 2
Currently building my final F-134 powered 3B .
Rock Crawler using factory parts from the Willys Motors era (1953-1963)

http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new
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yjcanibul
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3.5 inches put it below rad top - ran a little better tonight too


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57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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Bob_webber
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looks good! i work on a lot of newer cars at work, and air locks are a major problem because the rads are lower than the heads. i was forced to buy a tool that pulls a vacuum on the cooling system. it squeezes the radiator hoses flat, and uses the vacuum in the system to pull the new antifreeze in. i don't know what the technical name for the tool is but the brand name is airlift.
53 3b, early cj5 frame (hurricane),2.43 ratio t case 26 tooth with 1 1/4" case (my own creation), late 60's c5 ross steering box, all range od, parts from a welder generator, and parts from about 9 different jeeps and counting. my every last penny and ounce of patients creates what we call the FrAnken B, the jeep that never was

bob, north east Ohio
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yjcanibul
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did a google on 'radiator airlift' Bob interesting tool

looking back the PO was running 100% antifreeze - pic of what I drained
out originally below - wonder if it was overheating for him too cause of crazy
long hose - us rookies need to question things - maybe 100% was a quick fix attempt

going to putt around this weekend before i claim case closed - thanks everyone
for replies

randy


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57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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yjcanibul
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round #2

set timing tonight, was bout 10 deg BTDC now 5, brought idle down
from 1100 rpm to about 700 too

sounds sweet now, kinda like a 'tiny' harley with manners ...

BTW hats off to those that do it by ear, i needed technology ( timing light, eng analyzer ) to get it set ...

however, sitting in garage idling for 30+ minutes while i fidled/fumbled
it was running hot again according to guage ... is this normal ?

no test drive yet - if this doesnt cut it i think drilling the thermostat hole is next
57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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Gunslinger
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Drilling the hole allows air to escape to the radiator while filling, prevents vapor lock. its a good thing to do. Next time it gets hot, check the coolant in the radiator with a meat thermometer, compare that reading to the gage, it should be similar within a few degrees. If its way off I'd consider changing the gage. I went through a couple before I found one that was fairly accurate.
1950 CJ 3a named Triple X, 1997 Cherokee Sport, Colt 1911 National match
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yjcanibul
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ok looks like I am good ,

upper hose fix allowed quicker exit into rad which was improvement,
but was still over heating, final fix and possibly worse cond seems to
have been timing way out (10d BTC);

57 3B : big speedo / Hurricane / YF 938 SD / IAY-4012 / T90 / D18 / 5.375 final drive / open diffs / Firestone 6ply Military NDCC / 12v Delco SI alt / Kayline Top / venting windshield / tub patched / "still fixing leaks one at a time"

89 wrangler : h/duty axles + 5spd / 200+hp 4.2L / arb locked / multiport fuel inj / warn hubs+winch / 1/4 mil km / fishing+trail riding / gets me to work
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