One of my bearings is going bad and I isolated it to what I would call the Idler Pulley. It is left of the water hose. Anyway, I looked up idler pulley for a SRT6 and saw that Gates makes one so I went and purchased it. The part # is 38082. The pulley is 63.5MM. Looking at the pulley that is currently on there, this looks way too small. Before taking the belt off and cover off the pulley, does anyone know the size pulley that should go there?

Thanks,

Glenn aka Marine05

 

Hey Glenn I don't know offhand, but I can go and measure mine for you, if you indicate which pulley it is, as there is a small idler pulley under the supercharger also.

 

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sc idler pulley is 65mm, i believe and plastic.The idler pulley steel and 90mm. Tensioner and idler are the same. Search site there are photo"s and a lot of info on subject.

 

It is the pulley just to the left where the water hose goes into the engine, It has a bolt going into it. Looks like a 15MM size ratchet would fit. I tried posting a picture here, but didn't have any luck. It is a jpg file but it won't upload. I inserted the picture in a Word File and attached. Sorry for the poor quality I used my phone and flashlight.

Thanks,

Glenn

 

That is the idler pulley and is 90mm as Texas T said. Not sure what the Gates part number is for a replacement. A 100mm replacement is Gates 38002.

 

Guess you got the answer Glenn, hope you manage to get one before the weekend !
If you get stuck I have one of my LET pulley set that you could use temorarily, but I'd have to check the diameter, as I think it is smaller, and I don't know if you'd get the belt tensioned correctly.

 

Gates Pulley

 

Thanks everyone. I guess I will have to take this darn thing apart and bring it to a part's supplier. Everyplace I checked online, keeps on showing the smaller pulley size (The one that sits just to the left of the Super Charger).

Hopefully I can get this done before our GTG this weekend!

 

So I will close out this thread by telling everyone that more than likely you have to get an Idler Pulley from a MB Dealership. I searched high and low online and everytime I searched for an idler pulley, it showed the smaller ribbed pulley. I took the 90MM pulley off and went to the MB Dealership. As soon as the Parts Guy saw it, he said "Looks like you need an idler pulley." The MB dealership had one in stock. It was a little steep ($84 bucks), but my research time cost more than that. I put the pulley on this evening and am ready for the GTG tomorrow.

Looks like a nice day in Houston/Galveston.

Thanks Everyone!

 

sorry i was so late to this thread. 56$ on parts.com you just have to type in the part# and it comes up. i had the # but didnt see the thread until now

 

what is the part number for the pullies the supercharger idler as well as just the idler, I think I'd just feel better replacing both instead of one now and one in a few months

thanks

 

the small idler pulley next to the s/c is 1202000470
the larger idler pulley and the tensioner pulley are the same. 1122020119
go to parts.com and use the part # search under m/b

 

so should i replace all three at the same time, what is the main point of failure?

 

when i did mine all three plus the s/c bearing were in the process of failing. its cheaper to replace than repair the damage caused by a seized bearing. since then i have been testing a psk from needswings for the c3 setup. it replces these pulleys with larger pulleys and a longer belt to slow the pulleys down

 

ok first off where are you finding all these parts numbers second if it's a trade secret what is the part number for the supercharger bearing?

 

part # are stamped on the pulleys. the larger idler pulleys have the # on the big washer
the number for the s/c bearing is 32BD45DU its a nsk bearing. got a deal form a member here on a group buy.
http://www.hpashop.com/product.sc;js...&categoryId=58

 

ok I ordered the new bearing, 3 pullies, a new intercool pump, and a new belt. I think I should be good for a while

 

not sure if your stock or not, but i have had real issues with the small idler next to the s/c. 3 pulleys in 1 yr. my suggestion is keep a close eye on all of them and dont overtorque them