Coolant temp increase after "YooHoo" Belt install
08-26-10, 04:00 PM
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Coolant temp increase after "YooHoo" Belt install
So after some time of having a slipping belt i decided i would buy a yoohoo belt from pinnapple racing. Well that one blew on me. so i looked into other belts and came across the napa belt part number 3L220.
People have said this to work.
Before hand even with the slipping belt my coolant temps were usually on the fairly low side.
Now after i have installed the napa belt i have noticed more often then not that the temps are a bit higher than before.
For the most part the needle sits almost straight down on the temp gauge.
Can anyone give me some suggestions as what the culprit might be.
thanks in advance.
People have said this to work.
Before hand even with the slipping belt my coolant temps were usually on the fairly low side.
Now after i have installed the napa belt i have noticed more often then not that the temps are a bit higher than before.
For the most part the needle sits almost straight down on the temp gauge.
Can anyone give me some suggestions as what the culprit might be.
thanks in advance.
08-27-10, 02:37 AM
#3
That's because only yahoos run yoohoos... Not one race team in the US runs a yoohoo... Buy the good gates belt and properly tighten it and it won't slip. Mine doesn't slip at 8000rpm on the dyno, your's shouldn't either. Get a dual belt pulley and do it right if you want reassurance.
08-27-10, 11:44 AM
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What I did is I gutted the air pump and used the stock size belt. This enables me to tension the belt properly and allows for some manufacturing slop in the belt, which will happen.
I would suggest this method, or if it bugs you, try to obtain a tensioning pulley.
A dual pulley won't fully solve the issue because one belt will always be slightly more loose than the other. The dissimilarities in belt length due to manufacturing cause this issue. Even Gates belts have given me some troubles.
If you have a weber carb, you'll have to hack at the airpump to get it to fit. Otherwise, it should work out fine. The air pump hardly weighs anything with it gutted.
Just some thoughts...It didn't cost me anything to do it this way and I didn't have a hard time getting the belt on either. My coolant temps after letting the car idle stationary for about an hour was consistently 1/2 way. With some air moving over the radiator it drops.
It could also be a coincidence...Maybe your fan clutch is going bad? Maybe you did something at the same time that caused your engine to run hot?
I would suggest this method, or if it bugs you, try to obtain a tensioning pulley.
A dual pulley won't fully solve the issue because one belt will always be slightly more loose than the other. The dissimilarities in belt length due to manufacturing cause this issue. Even Gates belts have given me some troubles.
If you have a weber carb, you'll have to hack at the airpump to get it to fit. Otherwise, it should work out fine. The air pump hardly weighs anything with it gutted.
Just some thoughts...It didn't cost me anything to do it this way and I didn't have a hard time getting the belt on either. My coolant temps after letting the car idle stationary for about an hour was consistently 1/2 way. With some air moving over the radiator it drops.
It could also be a coincidence...Maybe your fan clutch is going bad? Maybe you did something at the same time that caused your engine to run hot?
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08-27-10, 03:34 PM
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That's because only yahoos run yoohoos... Not one race team in the US runs a yoohoo... Buy the good gates belt and properly tighten it and it won't slip. Mine doesn't slip at 8000rpm on the dyno, your's shouldn't either. Get a dual belt pulley and do it right if you want reassurance.
08-27-10, 06:07 PM
#9
When you use "dual" belts you get a "Matched" set of belts. However in the over 20 plus years of having these cars I have never had slippage with a single belt when I was not running the Air pump.
[quote=whistlepig87;10185710]
A dual pulley won't fully solve the issue because one belt will always be slightly more loose than the other. The dissimilarities in belt length due to manufacturing cause this issue. Even Gates belts have given me some troubles.
[quote=whistlepig87;10185710]
A dual pulley won't fully solve the issue because one belt will always be slightly more loose than the other. The dissimilarities in belt length due to manufacturing cause this issue. Even Gates belts have given me some troubles.
08-27-10, 11:35 PM
#11
That's because only yahoos run yoohoos... Not one race team in the US runs a yoohoo... Buy the good gates belt and properly tighten it and it won't slip. Mine doesn't slip at 8000rpm on the dyno, your's shouldn't either. Get a dual belt pulley and do it right if you want reassurance.
yoohoo belt when the alternator belt snapped on me. I am 95% sure if I had dual
belts I would have taken them both out.
To each their own/more ways to skin a cat/etc
08-28-10, 06:31 PM
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OK, so I guess a dual pulley is perfectly fine...I've bought plenty of "matching" gates V belts to be used on a dual pulley drive system on a welding positioner at work and they never were exactly matching, but if this works out for you guys, all the power to you. I was just offering a reasonable alternative that wouldn't cost anything. Lots of things will work, do what you think is best!
08-28-10, 08:58 PM
#14
If they were true "Matching cut numbers" as indicated by the "exact" number on the belts. Then you had a issue with your equipment, not the belts. 
OK, so I guess a dual pulley is perfectly fine...I've bought plenty of "matching" gates V belts to be used on a dual pulley drive system on a welding positioner at work and they never were exactly matching, but if this works out for you guys, all the power to you. I was just offering a reasonable alternative that wouldn't cost anything. Lots of things will work, do what you think is best!
08-30-10, 10:14 AM
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Yep, I sent him an email about it...I was splitting hairs on an issue I encountered in an industrial setting that really doesn't apply to automotive issues. +- 1/16th of an inch in belt cuts isn't a big deal for an alternator drive, but it is for what I encountered. I implemented my method based on experience in another engineered setting, and comparing apples to oranges just doesn't apply here.
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