TRON Posted April 6, 2016 Report Share Posted April 6, 2016 I've been struggling with belt slip for a few months now, and I can't seem to narrow it down. I've tried using shorter Gates' belts and replacing the tensioner, cleaning the pulley, but it seems that after a week, the alt is covered in belt dust again and squeals when the engine upshifts. So I threw my stock alternator on and it was fine. I still have it on and after a 3 weeks its hasn't shown any signs of slip. So I want to try putting the stock pulley on the Mechman but i'm unsure if the stock pulley with have the correct alignment. Also will the alternator even turn on if its idling slower with the stock pulley? I'm not concerned about not making full amperage at idle, however. Quote Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s Link to comment Share on other sites More sharing options...
Nathan DM Posted April 6, 2016 Report Share Posted April 6, 2016 This would be something much easier discussed by giving us a call at 888 MECHMAN x202. What vehicle, engine size, pulley type, and alternator size do you have. Quote Link to comment Share on other sites More sharing options...
OrionStang Posted April 6, 2016 Report Share Posted April 6, 2016 I don't run Mechman, but on my alt, we switched the pulley back to the stock clutched unit and eliminated slip/squeal. Ninja'd-LOL^ Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
TRON Posted April 7, 2016 Author Report Share Posted April 7, 2016 This would be something much easier discussed by giving us a call at 888 MECHMAN x202. What vehicle, engine size, pulley type, and alternator size do you have. I have a 2007 Chevy Avalanche with the 5.3l engine. My alternator is the 270a, I can't say about the pulley size though. Quote Avalanche Alpine Type S comps Alpine Type S 10'' Alpine MPR-F300 Alpine MRX-M50 Mechamn 270 XS Power d3400s Link to comment Share on other sites More sharing options...
Miguels Posted April 7, 2016 Report Share Posted April 7, 2016 changing the pulley to stock size might render the alt useless at idle and you will have to rev the engine higher to get the rated amperage you need to look at the belt wrap around the alternator.. you might have to add a pulley to give it better belt wrap Quote my logshttp://www.stevemead...-my-new-set-up/my blow through loghttp://www.stevemead...future-updates/ 96 ss http://www.stevemeadedesigns.com/board/topic/164094-96-impala-ss-build/ Link to comment Share on other sites More sharing options...
Karkov Posted April 7, 2016 Report Share Posted April 7, 2016 Call Mechman but I would change the pulley back, it's that size for a reason. I know that it is smaller than stock. weird you have belt slip though, I had Mechman 370 Elite in factory place for a year and no slip then a DC Power dual bracket with the Mechman and no slip then the DC Power dual bracket and factory alt for a year and no slip. Maybe need new tensioner? smaller belt? IDK..... I used gates belt also Quote 2007 Chevy Tahoe (SOLD) 12 ~ FI Audio X series 10" w/BP option 2 ~ DC Audio 5.0K @0.67 3 ~ DC Audio 5.0K @1.0 2 ~ PPI 3 way sets (not installed yet) 1 ~ RF T400-4, 1 ~ RF T600-2, 1 ~ RF T600-4 4 ~ CT Sounds 5.25" Strato comps (rear fill only) 1 ~ XS Power D4800 1 ~ XS Power D3400 8 ~ XS Power XP3000 160 stock alt, Mechman 370 Elite, 185 DC Power 320+ Sq. Ft. Sound Deadener Pioneer AVH-X5500BHS Youtube: https://www.youtube.com/user/knfjdkghjudfhsgkjdhf/videos?sort=dd&view=0&shelf_id=0 Link to comment Share on other sites More sharing options...
Nathan DM Posted April 7, 2016 Report Share Posted April 7, 2016 You shouldn't be having slip issues. Call us and we will try to walk you through everything to figure out what is going on for you. 888 MECHMAN X202 Quote Link to comment Share on other sites More sharing options...
Ahmed Johnson Posted April 7, 2016 Report Share Posted April 7, 2016 Try a trailblazer belt. The 91.5 inch belt. I think it's the EXT not the regular TB with the smaller belt. If you go to a part store the number is like 920k6 or k6920 Quote Link to comment Share on other sites More sharing options...
Ahmed Johnson Posted April 7, 2016 Report Share Posted April 7, 2016 (edited) my bad, that's what I needed. You might want to try 915k6 first. That's 91.5 inches Edited April 7, 2016 by Ahmed Johnson Quote Link to comment Share on other sites More sharing options...
OrionStang Posted April 7, 2016 Report Share Posted April 7, 2016 Get a new tensioner with that new belt. Quote SMD Super Seller My Feedback Thread Link to comment Share on other sites More sharing options...
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