belt help - Honda Forum / Acura Forum

crucifudge · 06-09-2007, 10:15 PM

I've just installed a JRSC on a d16z6 on a 93 del sol si. I've had the car running but i'm having problems with my belts.

The car first came with a used 3 rib bando (what the 96-00 cars use) while the 92-95 use the 4 rib. I decided to test it with the 3 rib belt and when i started it before I could get out of the car and look it had jumped from being properly seated inbetween the JRSC's pulley's 4 ribs to being seated off center like ^ ^ V ^ V ^ V as opposed to ^ V ^ V ^ V ^. This belt broke after 38 miles, snaping across all three ribs with a very loud pop and the alternator light comming on.

I thought maybe the belt was old or maybe the 3 ribs were messing it up, so I went out searching for a 4 rib, couldnt find one, but asked bando and they said if I bought a 5 rib I could cut one rib off and be alright. I bought a cheap autozone belt, cut off one rib, pretty straight, but maybe a 1 to 2 mm varience either way, and installed it, let it run for 5 mins and re-tensioned it to 90 lbs. (however if felt much loser then the 3 rib belt that was 90 lbs. 3 ribs would deflect maybe 1/4 to 1/2 an inch, the 4 rib would deflect 1/2 to 3/4) This belt also jumps to the side not landing on the first rib of the jackson racing pulley

Everything ran fine till 37 miles later, it begins to feel like the belt is slipping, there is a liquor store (the only place to stop) about two miles down the road so I figure I'll pull over there, the belt slips maybe 5 times in those two miles, and about 100 yards from the liquor store the alternator light comes on again. This time I pop the hood and the belt has sheared down to two ribs and there are little rubber slices split from the side. The two ribbed belt has streched quite a bit and now cant hold tight on the pulley assembly.

I'm trying to find out why my belts are dying so quick. My alternator pulley has a small dent in the end of it, witch I'm thinking might be putting extra stress on the belt, I had an alternator belt on there for 30k miles with no problems, but thinking maybe the routing before had 2/3rds of the alternator pulley with a belt and now only 1/4 has a belt touching, increasing the amount of pressure put on that bent area. When I install it it doesnt seem to be jumping off the alternator pulley, but havnt had a good look and dont feel like buring through god knows how many more belts to find out.

AcidLotus · 06-09-2007, 10:26 PM

I hate those cheap autozone belts. They suck balls. Spend the extra money and see if you can buy the proper replacement Bando belt from JR.

crucifudge · 06-09-2007, 10:39 PM

thats what i was hoping it was, there wasnt a bando place near here and I didnt feel like waiting for one to arrive

How are napa belts? I have them for my other belts and they feel well made and seem to hold up.

ksniperfox · 06-10-2007, 07:46 AM

i had a similar problem with going through belts quickly. but not that quick lol. it was because i had the wrong size. if i remember correctly, i think the right size was a 780 or 785k4, or a 778k4 on my new pulley setup. and nobody stocks that shit or can order it.

so what i did was, check www.dayco.com for the closest match(i cant remember what belts i used for which pulley combos-i had 2 puley upgrades.).i ended up ordering a 778k4 and a 774k4 or some shit, incase one was too large i had the other smaller one, but look for your right size in the 4 ribs and adjust tension accordingly after you get it. then call them. they dont ship to private, but business. but what they did was hook me up with a guy with a business license or whatever, but ships them immediately to the individual from dayco. his name is BJ and he is located in chicago. ask for his phone number. he is a friendly guy and will take your CC info over the phone. i had my belts in 2 fuckin days!

ksniperfox · 06-10-2007, 07:51 AM

also, you arent over tightening them are you? make sure you can turn the belt 90 degrees by hand. is this with the stock crank and 3.8' blower pulley?

crucifudge · 06-10-2007, 08:02 AM

I was using a 480k4 belt on the 4 rib, the 3 rib was a 4pk1220 or about 48.03 inches. I had tried a 4pk1211 (47.6 inches) and that was too small to fit on.

turn the belt 90*? I thought it was only supposed to deflect 1/2 inch, or be 90 to 100 lbs. with a tentioner

stock pulleys all around.

crucifudge · 06-10-2007, 08:43 AM

somebody on honda-tech said that having a y8 snout pulley (witch i have) will not work with a z6. They said the y8 pulley doesnt sitck out far enough, and the z6 sticks out farter and has 4 ribs (including pictures), meaning I would need to get that new pulley to fix the problem, this sound right?

daveb91 · 06-10-2007, 01:06 PM

Yeah that was me I think you have the wrong kit for your car you have a offset problem not a actual belt problem like the others have said. Check you allignment and see you should visually see it if its the wrong kit.

ksniperfox · 06-11-2007, 12:27 AM

yeah i had a 480k4 belt on my stock setup. it should work.

i upgraded to a larger d16y8 crank pulley and smaller 3.2' blower pulley. my new belt size was 475k4 i think.

but the y8 pulley works fine.

crucifudge · 06-11-2007, 06:52 AM

heres the problem, my pulleys line up like this:

pushing the y8 twords the block and causing the belt to jump over and align with the alt and crank.

one way a person fixed it was switching to the z6 pulley.

daveb91 · 06-13-2007, 07:40 PM

Quote:

Originally Posted by ksniperfox

yeah i had a 480k4 belt on my stock setup. it should work.

i upgraded to a larger d16y8 crank pulley and smaller 3.2' blower pulley. my new belt size was 475k4 i think.

but the y8 pulley works fine.

Its not his pulley he has the wrong manifold. Kit was made for a different nodel there are two styles of d series JR manifolds one has a different offset to allow more room. He needs to either get the right manifold or shim his Blower pulley.