JRSC belt sizes revised and corrected!

After doing some research, I noticed that the ever so famous belt size guide by Holden is slightly off. I noticed it after seeing that on his guide the stock ac belt was listed as 31 inches but when you go to an autoparts store and give your car information, the actual belt size is 33.2 inches or 845mm. I checked this on four different websites and has been confirmed.

In his guide it states that the stock belt for the crank to alt is 33 inches when in reality it is 31 inches. I also verified this on four websites.

The power steering information is correct though.

Btw, the sites were autozone, pepboys, dayco.com, and goodyearbeltsandhose.com.

Also, a little more research led me to the car that uses the 35.5 inch belt that is needed on some of these applications. Go to an autoparts store and ask for the power steering belt for a 98 honda crv 4 wheel drive vehicle. It is 35.4 inches or 900mm. Belt sizes will differ from each other depending on the brand, so adjust accordingly. Dayco's tend to run a bit smaller gatorbacks are pretty much on point so you may have to get a belt that is smaller and get the next lower or higher one. If you can, try to compare the original belt that is on the car so you can see how the new belt will compare against that one.

Enjoy the show folks!

Stock Belt Sizes
AC = 33.2" = 845mm
PS = 36.5" = 930mm
Alt. = 31" = 785mm

6psi JRSC Belt Sizes
AC = 33.2" = 845mm
PS = 36.5" = 930mm
Alt. = 31.5" = 800mm
Blower = 24.5" = 620mm

9psi Stepper
AC = 33.2" = 845mm
PS = 36.5" = 930mm
Alt. = 31.5" = 800mm
Blower = 640mm

10psi JRSC with CRV Pulley Belt Sizes
AC = 34.7" = 880mm
PS = 35.5" = 900mm
Alt= 33.5" = 850mm
Blower = 24.5" = 620mm

8psi JRSC with Blower Pulley Belt Sizes
AC = 33.2" = 845mm
PS = 36.5" = 930mm
Alt= 31.5" = 800mm
Blower = 23.4"-24" = 595mm-610mm

For the CRV pulley set up you can get a belt that is 33.2-33.5 or 845mm-850mm for the alternator to crank.

For the CRV pulley set up you can get a belt that is 34.5-35 or the 880-890mm for the ac compressor to the crank. I find it is best to use the ac belt from a 94-01 acura integra ls which is a 34.7 inch or 880mm belt.

Brought to you by Racerx159 [img]biggrin.gif[/img]

<font color="#a62a2a"><font size="1">[ May 30, 2005 04:08 AM: Message edited by: racerx159 ]</font></font>

<font color="#a62a2a" size="1">[ June 11, 2005 09:27 PM: Message edited by: racerx159 ]</font>

hrmm, can someone confirm this?


ive been using holdens org sizes and ive been running fine, other then the charger belt coming off at high rpms over 7.5

well, the belt slipping is another issue altogether. As far as the sizes, this was actually tested by me while at my mechanic's. I was bored and he had a lot of time and we verified it with the million belts that I had. As for Ac belt with the crv pulley, maybe the fact that our ac system comes with a very adjustable idler pulley. I just wanted to point out that the stock belt sizes he had on there were not what our gsr cars recommend. I wouldn't give out something this big without doing extensive research. Go to autozone, pep boys, any auto parts store and ask for a belt for the ac system on a gsr and they will give you one that is around 33.2 inches long. Not 31 inches. A couple of tenths of a mm is not that much of a difference but two whole inches is. So if the stock belts are wrong then what's to say that the others aren't? That's exactly why I did the hands on research last week and posted it. I'm running the belt setup for the crv to ac that is 35 inches right now from dayco.

i would have to say that holden's sizes were a good refrence point instead of trying to re-invent the wheel. they were not the sizes that i needed though for my applicaion.

does anyone have a link to holdens belt lengths?

Can anybody help me with belt lengths for my 1998 gsr?

my setup
stock crank pulley, MVM stepper pulley, stock pulley on jr blower. Need lengths for napa (gates) brand
belts.

Alternator= ?
Blower= ?

<font color="#a62a2a" size="1">[ June 02, 2005 03:05 PM: Message edited by: Grado ]</font>

If you search under mvm pulley then you might get the belt size. the 9 psi stepper might or might not be jim's stepper pulley setup so try that. Jim knows what size his belt is.

I tried pm'ing Jim a few days ago but he hasnt responded. I havent seen him post much as of late. Can you help me located that thread, search funtion is bizzare here.

I believe it's one of the ones that I listed. I just don't know if its the 8 psi setup or the 9 psi stepper pulley setup. JRCivic definitely knows, give him a call at mvm. The number is in alabama I think.

1-205-661-3600

Ask for Jim.

Quote:

---

Originally posted by Grado:
does anyone have a link to holdens belt lengths?

Can anybody help me with belt lengths for my 1998 gsr?

my setup
stock crank pulley, MVM stepper pulley, stock pulley on jr blower. Need lengths for napa (gates) brand
belts.

Alternator= ?
Blower= ?

<font color="#a62a2a"><font size="1">[ June 02, 2005 03:05 PM: Message edited by: Grado ]</font></font>

---

<font size="2" face="Verdana, Helvetica, sans-serif">if i had my regular gsr setup I would be able to give you some belts but since I've got the CRV crank..... things are a wee bit different.

Something is not right here. Maybe it has to do with the fact that I have a B18B. The belts included with my kit are:

4PK840 and 4PK590.

That is because the ls crank pulley is smaller than the crv pulley and bigger than the gsr.

LS is bigger than a GSR, but smaller than a CRV. Now what size of belts would be needed with an LS/RS with JRSC and a CRV pulley?

I would imagine that its the same as the gsr with crv set up since the only difference between the ls and gsr engines are pretty much the power and the crank pulley sizes. Going with the crv set up for the gsr is the same as going with the crv setup on the ls. So just get a 850mm or 33.5 inch belt for the crank to alternator. Enjoy.

Lots of good info here. I would like to add some part numbers to this thread for the CRV pulley based on the information and lengths above.

Gatorback belts
Power Steering - GTR-4040355 (35.5")
Alternator - GTR-4040332 (33") .5 smaller
Air Conditioning - GTR-4040347 (34.75") .5 smaller
Blower - GTR-4040245 (24.5")

Napa belts
Power Steering - NBH25040350 (35.62") .12 bigger
Alternator - NBH25040330 (33.62") .12 bigger
Air Conditioning - NBH25040345 (35.12") .38 bigger
Blower - NBH25040245 (25.12") .62 bigger

I will be ordering the Napa belts above and will update what I find out after the install.

<font color="#a62a2a"><font size="1">[ June 12, 2005 07:54 AM: Message edited by: 98BlackTeg ]</font></font>

<font color="#a62a2a" size="1">[ June 12, 2005 07:56 AM: Message edited by: 98BlackTeg ]</font>

Just finished my install B18B with CRV crank pulley and here are the belts that I used.

Air Conditioner - Bando part #4PK870
Blower - Bando part #4PK590
Power Steering - Dayco part #5040355
Alternator - Dayco part #5040345

Sorry to drag up a old thread but is there any local stores like autozone etc that would carry the 590mm belt? I tried a couple hole in the wall stores with no luck.

http://www.goodyearbeltsandhose.com/products.html

Go to that website and look in the where to buy section by zipcode and call them. Ask them for you belt size in mm and inches, just in case.

Called the autozone they had listed and I found the 595mm gatorback belt instead of the 590 bando. Seems like its smaller than the bando 590 I guess the bando was stretched out.lol Thanks!!

yeah, I think gatorbacks tend to run a little smaller, but that size will suffice. Get two.

I already went and bought only one. Little fucker cost 18 bucks.lol The car is for sale right now anyway. Thanks for the help though man!! Much appreciated!!

Hey thanks again for the info! Got her on this morning and shes boostin like brand new again. I always thought my gauge was off. Nope musta been the bando belt slipping. [img]graemlins/thumbs_up.gif[/img] [img]graemlins/thumbs_up.gif[/img]

i know this is late, but the reason my belt was rolling over is because the supercharger idler pulley was too far out, about 2mm too far out. so i shimmed the spacer to fit, now my car holds belts tighter + more boost. it is still rolling over in 4th gear around 8200. happens everytime like clockwork. im gonna try to figure it out this week so jim can really tune my car. 210whp @ 9psi were the last results, im looking to get 230+ with a new exhaust setup.

That's good to see. I just tuned my crv crank set up and I'm at 235 whp. Not gonna go any further till I get my water injection done in the spring.

do you guys know..what sould be the best compression ratio for an b18c motor at 10 psi is 10.5/1 is ok or do i need less....

i am curently running a b20b v tec whit 85mm bore and 8.5/1 compression..and running the b20b crank pulley..and only 7psi du to my big bore and low compression..dyno result 213hp 161ft/t at 8200rpm...

now i want to built a b18c with proper compression ...doest any body has dyno result...

thanks civic sc