i know i don't own a bronco but i have always liked them and i guess you can say that i kinda have ford envy being i put a 351w and np435 in my jeep. any way i have a problem keeping the thing cool. i rebuilt the motor and it only has around 10,000 miles on it. i have a 4 row radiator(jeep), the timing is right, and i don't have any fluids or oil anywhere it doesn't need to be. i live in north texas and it doesn't like these 100+ temps that we have around here during the summer. any ideas? any help would be greatly appreciated.

brian wilson
80 cj5 "high 5"
stretched to 100" wb
351w/np435/d300/d44/d60/detroits/4.56/35ss/bdlocks

What year is the motor? Does it have the right water pump for the year and belt set up?A 302 water pump and the wrong serpintine belt set up will not circulate the water right.

this very well could be my problem. i had to modify the brackets for the altenator and p/s pump. this also means i don't run the stock belt configuration. do you have any suguestions on how to fix it without returing exerthing back to stock? it wouldn't fit in the stock form and this is why i modifies the mounts. your help is greatly appreciated.

brian wilson
80 cj5 "high 5"
stretched to 100" wb
351w/np435/d300/d44/d60/detroits/4.56/35ss/bdlocks

Do you have a shroud? is your fan spaced properly? is the fan pulling enuf airflow through the radiator?

Did you fill the radiator and get all the air out? isthe rad cap the highest point of the system. If not you might have an air bubble in the engine.

Do you have a thermostat in? this sometimes slows the water which can help and let the radiator cool more.

Is the engine running lean? this can cause them to run hot.

Just some ideas for starters.

Good, luck,

- Dan

99 4Runner (wifes grocery getter)
My Bronco is sold.
What trail rig will be next...

dan-h, yes i have checked all of this and i have a thermostat(new), rad cap is higher than anything else, engine doesn't seem to run lean but how could i tell for sure? my floats are set correctly and it runs perfectly even at high rpms. thanks for the help

brian wilson
80 cj5 "high 5"
stretched to 100" wb
351w/np435/d300/d44/d60/detroits/4.56/35ss/bdlocks

mudpony, i check the way i have my belt run to the water pump and it doesn't seem too far from where it was origionally. i had to modify the alt. bracke so i could stay with a gm alt like the jeep was wired for and that was it. the belt runs around the water pump, altenator, and one of the largest diameter slots on the crak pully. the only other thing that i can think of along those lines is would it make a difference if the water pump spout was towards the driver or the pass side. mine points to the drivers side to match the jeep rad but i know that different 351w pointed different ways. any idea?

brian wilson
80 cj5 "high 5"
stretched to 100" wb
351w/np435/d300/d44/d60/detroits/4.56/35ss/bdlocks

No idea wether the spout direction would make a difference?My original thought was with the belt configuration it has the pump spining the wrong way.How hot is the motor getting anyway?

on 100+ degree days it will get up to 210-215 on the road and 230 off road if pulling high rpms for a period of time.

brian wilson
80 cj5 "high 5"
stretched to 100" wb
351w/np435/d300/d44/d60/detroits/4.56/35ss/bdlocks

checkout this thread. similar problem, similar items, may give you some more ideas.

http://www.pirate4x4.com/ubb/Forum3/HTML/000144.html

- Dan

99 4Runner (wifes grocery getter)
My Bronco is sold.
What trail rig will be next...

dan-h, that guy and i are having the same problem. i can't wait to see what his is and maybe it'll be the same thing. i have checked all of the things those people have suggested too.

brian wilson
80 cj5 "high 5"
stretched to 100" wb
351w/np435/d300/d44/d60/detroits/4.56/35ss/bdlocks