Supercharger guys, what do you think about sand blasting pulleys?
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Supercharger guys, what do you think about sand blasting pulleys?
I am getting my car ready to go to GRD for a re-tune next week. I am swapping my 3.12 out for a 2.87 but I am concerned with belt slip. I already have the GTM pulley upgrade but I'm still worried as I had some slipping issues last summer. I don't want to drive 6 hours, get it on the dyno and then have to deal with this problem. My friend has a sand blaster and I was thinking about sand blasting the grooves of my new pulley for added protection against belt slip. What do you guys think?
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Would think some additional friction will be gained but it may also lead to earlier belt failure and likely lot more belt dust getting into the Vortech filter..Someone posted this in the past. Don't remember who or results..
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Thanks guys. The Timrod method looks like it would help reduce or eliminate squealing I have with my power steering pulley right after I start my car. I have included a link the shows the stock and Timrod setups so thanks Nexx for bringing that up. I have tried belt dressing Quamen but it seems to only be a temporary fix. I assume the agricultural equipment dressing would work better but I'm not sure where to begin to find it but that's what the internet is for. I'm going to go ahead and sand blast my pulley then and I will post some follow up pics and a review.
Here is the link that shows the different belt setups: https://my350z.com/forum/forced-indu...e-vortech.html
Here is the link that shows the different belt setups: https://my350z.com/forum/forced-indu...e-vortech.html
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Have you thought about keeping the 3.12 on the front and switching out the supercharger pulley to a 28tooth? you will get the best of both worlds.. more grip on the front side and more boost!!
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stay with the stock 32/28 cog setup, install the 2.87 serp " sand blast the ribs on the 2.87 pulley " install the timrod pulley kit and you will yield the best results. prepare yourself though! you will be making alot more boost. i was hitting 14 psi at 6600 rpm with the sc-trim. my boost comes in a little quicker with the Si-trim but max boost is about the same. i am also at 2100 ft above sea level so you may see a little more boost pressure.
Last edited by JET MECH; 04-08-2009 at 04:32 PM.
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stay with the stock 32/28 cog setup, install the 2.87 serp " sand blast the ribs on the 2.87 pulley " install the timrod pulley kit and you will yield the best results. prepare yourself though! you will be making alot more boost. i was hitting 14 psi at 6600 rpm with the sc-trim. my boost comes in a little quicker with the Si-trim but max boost is about the same. i am also at 2100 ft above sea level so you may see a little more boost pressure.