getting s/c pulley machined down today
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From: Orlando FL
CLK55 AMG
getting s/c pulley machined down today
I'm getting milled down to 69mm, what kind of gain do you think ill get? I'm hope for 10+ HP and around the same tq. It's my birthday present. I wanted to go with a c3p pulley but can't find them anywhere! Hope to hear back from you all
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PLAID
I am thinking with a tune that you would get 30-40 HP, not just 10.
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My AF's were all wrong when I installed my Code 3 SC pulley about 30 months ago. Not only that, I shredded a belt since the original pulley's grooves were so aggressive to prevent slippage.(he subsequently fixed that problem) . Anyway, the engine was lean and Jerry retuned it to run a bit on the rich side. I wouldn't do a Code 3 pulley or a shaved pulley without a tune, despite Brandon's original assertions back in March 2008 that you didn't need a tune for it??
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From: Orlando FL
CLK55 AMG
should i be worried about this? i will be getting a tune in a month or so and i will go with jerry, but i dont want to severely damage the car. im having it done by a local machine shop
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02 C32 AMG
like stated above, sometimes the grooves on the earlier c3 pullies may have caused wear and tear and broken belts. inspect the grooves carefully after it's machined down
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From: Orlando FL
CLK55 AMG
thank you jturkel, im was worried about it for a little while but i feel a little better. im getting it back right after school tomorrow 
so im a little excited too. i didnt go down to the c3p size (65mm) because i heard you needed a new bearing??
so im a little excited too. i didnt go down to the c3p size (65mm) because i heard you needed a new bearing??
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02 C32 AMG
regarding a bearing, i suppose you could possibly need a new bearing since it will have a smaller circumference and will therefore spin more quickly, but i'm not familiar with the specifications or capacities of bearings on the oem or code3 s/c pulleys
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2002 c32 AMG 2012 c250 Coupe
You should also replace the bearing while you have the pulley off.. Do you mind sharing the price with the rest of us..? Haven't heard of anyone else doing this to a c32.. Good luck..
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regarding the grooves in the c3. i have a first gen c3. the grooves run horizontal to the belt . this was to ensure better grab. and it did! shredded some belts due to the sharp edges. after the pulley wore in no more issues. never hurt a belt on mine with 19 psi boost logged. the parallel grooves should be the same depth as oem when machined down.
you might want to hollar at rob at needswings and order a c3 pulley saver kit. bigger idler pullies by 10mm and they spin slower so less bearing wear. inc. belt wrap also. oem idler by s/c was replaced 3 times in 1 yr with c3. after psk not a single pulley failure
you might want to hollar at rob at needswings and order a c3 pulley saver kit. bigger idler pullies by 10mm and they spin slower so less bearing wear. inc. belt wrap also. oem idler by s/c was replaced 3 times in 1 yr with c3. after psk not a single pulley failure
Last edited by 320 dreamer; Oct 14, 2010 at 08:38 PM.
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From: Orlando FL
CLK55 AMG
i wanted to be unique in modding the car and this is one way to do it! i will definatley share with everyone my outcome. i dynoed last at 330.2whp and 327.4wtq, i will be getting an after dyno soon
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From: Orlando FL
CLK55 AMG
I got it back today and wow, it really made a difference I'm very happy with the outcome. The only thing is I'm noticing some rubber residue on the outside of the pulley. Idk if it's slipping a little or the groves are wearing to the new size? I did a check to see if it was slipping by holding the brake like a break stand but only reving to 1700 rpm and it didn't slip?? Any ideas?
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A teal Vespa with tassles and glitter. You know you're jealous.
Very curious about who did your machine work. I was just thinking about doing this to mine as well this weekend because I can not find the C3 pulley anywhere. I had not heard of anyone doing this though. Keep us updated because if this works for you I will definitely be machining mine down.
Andrew
Andrew
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From: Orlando FL
CLK55 AMG
Very curious about who did your machine work. I was just thinking about doing this to mine as well this weekend because I can not find the C3 pulley anywhere. I had not heard of anyone doing this though. Keep us updated because if this works for you I will definitely be machining mine down.
Andrew
Andrew
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C63 AMG, P30
wow, this is sick! I really want to do this. If it only costs a around $60 at a local shop I'd be stoked. Could I machine it down to 65 mm like the code 3 and then get a tune immediately after?
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2002 C32 AMG selling
Turning down the Stock SC Pulley
Tom2112 measured the pulley dimensions over on the crossfire forums...
http://www.crossfireforum.org/forum/...tml#post609606
Been discussing what the minimum mm is that the stock sc pulley can turn down too. I'm thinking 68mm at best without better evidence. I've read of a keen forum member that has machined down to 66.8mm.
Any thoughts?
Last edited by positronicC32; Jul 26, 2011 at 09:37 AM.
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C63 AMG, P30
wow thats a good find (the pic). I'll want to go lower than 69 mm because I'm going to get a tune at the same time. I want to go as low as possible without compromising structural integrity.
