67mustang302

I have March UD pullies, and I noticed a difference with them. No heating or charging issues, and that's in Bakersfield where this time of year the temp is routinely over 100F during the afternoon. With a 180* stat the engine never gets over about 185-190 whether sitting in traffic or pulling up 58 going into the mountains.

Overheating is an inadequate cooling system. Either the fan is poor, you have no shroud or it's not properly set, or your radiator is clogged or just too small. The pullies may have simply caused you to notice the problem when in traffic, or the pullies could have nothing to do with it and it's coincidental.

crocop

so do you mean that i dont have the power and amp set, thats what i ordered and it also says that on the box. i noticed a difference with the pullies, my car pulls harder with them, my only problem is that dam engine temp. i know that the pulley will slow down the water pump but with the difference in size of the 2 pullies and the increase in the engine temp. i think its more of a colling system problem.

HACKGT350

there are a very few out there that dont have problems with them but the majority have problems unless you have upgraded to the 3g alt and a better cooling system. other than that most people have problems with them and you see maybe 2hp at the wheels with them and to me thats not worth the trouble

crocop

hey guys sorry to bring this tread back but i wanted to ask something about the pullies.

about the charging issue, will this 130 PA alt. be ok with the under drive pully on it? is there a better way to go.

i know someone that has a volve 780(i think thats the car name) and he has a 3 core rad, he says its a bit thicker, will a bigger rad help me with cooling, also if i got an electric fan will the 130 amp with the underdrive pulley be able to support it?

Shelty

my car came with UDPS, unknown brand... but they are aluminum.... no cooling problems, but my amps do fall low when lights, heater and radio are on and the car is at idle, but nothing has shut off.... becuase of them...

67mustang302

With power pullies you'll prolly see some charge issues at idle under electrical load. My voltage runs at 14.8 and only drops under 14 when it's at idle with accessories running such as lights and/or the heater. It still stays around 12.5-13 volts, but I'm running a 140A alternator.

You need a good cooling system though with the proper fan. A slower turning water pump is actually better. It gives the coolant more time to absorb heat from the engine while in the cooling jackets, and more time to dissipate it into the radiator. That's why electric pumps run at lower static speeds. Fords are notorious for having inadequate cooling systems.

Hamutoff

I have the 3g and good electric fan/shroud and var controller
x2 on not using the 160^ tstat
I had issues with the engine getting HOT when all (3) UD pulleys on, I have the gano filter at first it caught junk then stayed clean - this before UD pulleys install... so I was running HOT it did not matter if sunny out or not.. this in SoCal btw, when I re-installed the stock larger water pump pulley it helped & the car would act as before the UD as far as heat.

The charging issue from UD crank + UD alt remained... even though yes brand new 3g with 0 AWG cable.. as soon as I put the stock crank pulley back on the charge indicator guage acted as before UD

yes this is looking at factory ford guages not super accurate but YES good for comparisions! ALSO the radiator would puke each day a quanity more with UD than without (I had disconnected the puke tank to test this as well as to clean out top scum on cooling liquid)
ALSO I could hear the 190 lph walbro fuel pump was not struggling at idle anymore... the tone would not drop when at a light W/O the UD

I must mention that I have a recent new ford repalcment water pump , and left a slightly larger pulley left on the alt so I had pulleys:
-larger alt (slows it)
-larger w/p (slows it)
-smaller crank (slows the whole system)

try using just the crank slow down pulley and make sure you have a good w/pump the edlebrock are supposed to be quite good

FORD TOUGH

Putting a bigger alternator on defeats the purpose of having under drive pulleys. The bigger alternator is going to turn harder so why not put the old pulleys back on and your car will charge fine and stay cool instead of getting a bigger alternator and radiator.

Portmaster

Bottom line is you installed an underdrive pulley set on a car that already had a marginal cooling system. It's getting some age on it and chances are wouldn't have been long before it had overheating problems anyway. You just enhanced an upcoming problem. Before you throw underdrive pulleys on anything you need to make sure it has a good radiator, water pump and alternator.

On a personal note I run underdrive pulleys on everything. I just make sure everything else is up to the task.

crocop

ok that fine, i have no problems with making upgrades. basically what im going to do is go to the junkyard and find a 2 core rad, something of good size, an electric fan,and by a alternator.

for the alternator what amperage should i get theres a 130 and a 200 and late model resto. i have a clarion cd player with 4 clarion speakers in the car, so with the elctric fan and the uder drive pulley on the alternator which one should i get?