With the air pump removed, remaining belt tends to squeal and slip, with potential damage to the engine due to overheating, not to mention the annoying noise. What is the best way to handle this and why?

 

In Carl and Pratch's tutorial, they use another, smaller belt (3L220) which connects the e-shaft and water pump pulley. Since neither of these pulleys move for adjustment, it's a bitch to get the belt on there, but once you do it should help the problem.

Oh... *looks up and feels stupid*... I guess that's what you call a yoohoo belt... Prey-tell where did that name come from?

So I guess my vote is for the 3L220 Yoohoo belt!

Jon

 

Yoohoo is much cheaper and works, no need to get a double pulley unless you really want it.

 

I got both so I cant vote.

Jon, not sure how it got the name, but it was Rob Golden from Pineapple Racing who came up with it.

 

I found this link on the yoohoo belt:

http://www.1300cc.com/howto/how2/belt.htm

 

What's wrong with just running one single belt, I've never had any problems, just get a good quality belt and get it really tight with a bar underneath the alt.
I don't understand.

 

A single belt can slip at higher rpm's. Not a good thing. The double alternator pulley or yoohoo belt are basically just extra insurance that gives the driver peice of mind. Most of the time it is needed though.

 

What's wrong with a little slip?
little slip=more power
I have a dual belt pully not sure If I'm going to use yet or not, probably will. But there's no problem with running one belt, just get a good belt and make sure it's tight.

 

little slip = hotter engine

since the belt tends to slip more when the engine is at full operating temp, it does become a problem. Plus the noise IS annoying.

I went to a local NAPA store and they didn't have the yoohoo belt there, but there is ONE at the distribution center. They'll have it at the store first thing tomorrow and I'll go pick it up. Probably install it tomorrow night.

 

Hey, jorx81@aol.com, don't ask us what happened to your car when it overheats and dies. It really doesn't take much to overheat a car when its at operating temperature.

 

If mine ever sliped it was at startup when cold, and only sqeaked for a split second if at all. This always cleared up if I re-tightened.
A little slip at high rpm will not overheat your engine.
How are you guy's tightening your belts? Sounds like your not.
I take a 2' pry bar underneath the alt, pry as hard as my weak 125lb *** can and tighten the bolt, no sqeaks, no noticable slip, I've done this to several cars with absolutely no problems whatsoever, street&strip and my dirt track car. I've never had a belt wear excessivley either.
Just my expirience. I think a dual belt pully isn't worth the money and the only advantage is if 1 belt breaks.
Just replace the single $5 belt once every year.
If I had an electric fan I definetly wouldn't get a dual belt pulley.

I probably will use the yoohoo belt on my next dirt track car b/c i'm not going to run an alternator, it goes from main pulley to water pump pulley right?

 

Look man I'm not a complete ******* idiot, I'm telling you I've done this to several cars. One car that I ragged the hell out of daily, power shifting by the rev alarm daily and it NEVER overheated, and temp was ALWAYS consistent.
You guys that are having problems have shitty belts that aren't wide enough or you aren't tightening your belts enough. PERIOD.

 

I wouldn't go with a yoohoo belt. I got one when I took off my air pump, and it was a bitch to get on, but I thought it would be ok. Well, about a week later the water pump pulley basically exploded from the high tension of the belt, leaving it to rattle around on the shaft and generall screw up all the other belts. I luckily made it home without too much overheating, and was able to order a new pulley.

I now have just a single belt, and havn't had any slippage at all. Zero. And I didn't even get it that tight. Until I start overheating or getting slippage, I'm sticking with just a single. Why go with the extra expense?

 

Applause

 

I don't think anyone is calling you an idiot - BUT you should never "tighten the hell" out of any belt. You may not get any slippage across the water pump by doing that - but I can guarantee you that you're prematurely wearing out the bearings on both the water pump and altenator by doing that...

I suspect the replacement of one, the other or both will cost more than $5.

 

And I'll add this. Overtightening your belts will shorten your engine front bearing life gaoouranteeeed. The front extension shaft on a rotary is puny compared to the main part of the e-shaft. That extra tension from extra tight belts causes it to deflect upwards slightly. It is for this reason that belt tension is seroius business on a rotary. Every motor I've torn down showed evidence of this wear. The upper portion of the bearing was down to the copper, and thats not good for your engine. Ive personally never had a problem with the yoohoo belt. Nor till now have I heard of anyone experiencing a problem with one. Ones I have installed showed normal belt deflection once installed and werent tight enough to damage anything. Maybe you got a bad belt? Did you check it for deflection after you put it on? Maybe it was mislabled and was too small? They dont fall into the engine, but theyre not a real bitch to put on.

 

An electric fan will solve this whole problem and you gain 5 hp.

 

Good point and it will solve the belt squeal situation. BUT..... you wont have 2 belts driving the WP. Having 2 belts on that WP is good insurance on making it home on some dark rainy night.

 

syklone, what confuses me is when you said "high tension of the belt". I've got my 3L220 on and it seems to me to be a bit LOOSER than it should be... I've been worried that it won't grip properly 'cause it's got quite a bit of deflection. I'm swapping it out for the regular air pump and associated belt for the safety, but afterward I'll have to see. I definitely don't think it's too tight though.

Jon

 

I went with the dual set up.......Works great........
I wanted the extra protection and no slipping.....

 

I'll let you guys in on a little secret to getting the yoohoo belt on. Put it all the way on the main pulley, and push it on as far as you can on the water pump pulley with your hands. Now, go crank the engine for a sec, it'll pull the belt on the rest of the way

 

yeah, I remember reading that the yoohoo belts can kill your water pump bearing. I would just go with a dual belt pully and run 2 lower tension belts.

it just seems like it would cause less wear that way...

besides, a dual belt pully is only like 20 bucks... even less if you get one from a junkyard. someone posted a while ago that you could get one out of an 80's chevy van. dont remember what year and stuff, but that would be really cheap.

 

yep... I'm running higgi's dual pully personally...

I've had it on my SE for about 1 year and one of them broke...think i put it on too tight..but now im just running one...no slippage since, of course still run the 2nd belt for the extra protection.

Haven't tried the yoohoo belt so I dont have any say w/1st hand experiences...IMO yoohoo belt looks like it would work beautifuly...

WHATEVER way you go, AS Carl said BELT DEFLECTION SHOULD BE checked properly!

So either way you go theres no tension on of the bearings...


BTW- Carl how do you check for proper belt deflection?




-Ryan

 

Tightening the hell out of your alternator pulley with one belt can cause premature alternator failure. It ruins the bearing. If you intend to run an electric fan, one belt is fine. There is no slip because you remove the belt driven fan. If you want to keep the belt fan, the "yoohoo" belt is impossible to tension and does next to nothing. A duel alternator pulley is the way to go. Both the electric fan and duel alt pulley setup run around 50-75 dollars. I like the electric fan because its less load on the engine.
By the way, overheating rotaries is one of the leading causes of premature engine failure. Have fun with that slipping water pump belt if you decide to be cheap and not do anything at all....

 

I've had dual belts slip before with two different clutch fans. One turned out bad, but the other is fine. So what gives (pun)?

When a belt is spun at high RPM, what happens? It tends to go round (no pun). It actually pulls away from the waterpump pulley slightly. This makes the 20% contact even less.

The yoohoo belt is great because it has around 47% contact already, and then at higher RPM as the belt tries to go from an oval to a circle, it actually pulls tighter on the only two pullies it's wrapped around. I don't think it can ever slip under harsh racing conditions, let alone some spirited street driving. It was a racer's secret for a while (that's just a rumor as far as I know, but it does work, so that's good enough for me). It's also cheaper.

Tell me about the rabbits, George.