are you using kevlar belts?

 

I dont believe they're kevlar. We're trying to get some polymer chain belts that will fit.

 

my brother is doing the same thing right now that u are doing with the vortech with his procharger. its been really hard to keep belts so he go alot wider kevlar belts and got the them custom fitted in and is looking to run about 18 lbs now. hes not done yet and the cars getting some bodywork now but hopefully ill be able to post up some info in a couple weeks. good luck with your project

 

Were you still at 15psi ? And some thing else I was thinking about , Is the cog pulley thats bolted to the crank pulley , the same size as the crank pulley ? Or is it smaller ?

 

New Pics:

 

XS Engineering in Huntington Beach, CA.

 

No, we upgraded to a 18psi pulley. It looks to be the same size as the crank pulley. Boog - it looks like the cog pulley is around 3-4inches away from the radiator.

 

Have you gone to wider - better belts ? Or just not reving so high ? Car looks great !!!!!!!!!!!!

 

I thought I saw that kinda fuel set-up somewhere. My buddy owns the silver Z with the SGP motor, PE TT, & similar fuel set-up. Those guys are good. I'd have them do my car but I don't have that type of $$. Anyways, I ran into one of your buddies at the bar last night & I told him I wanted to run you sometime. Forget the HP, I'm more concerned about the TQ. I'll be at the Huntington meet, can't wait to see that thing in person. Peace

 

Well at least Vortech is doing something (albeit not very publicly) about the obvious belt squeal issue.

 

Belt squeal issue ?????

If your belt squeals it's to loose !!!!!!

 

That, I know. But having to tighten it every few weeks is really not the best solution. The second pulley idea should help a lot I would think.

 

After the first couple of times . I havent had to tighten mine much at all . Everyone acts like its a big deal for a 5 minute job

 

To me though, it is something that we shouldn't have to do at all. Doesn't matter if it takes 5 mins or 5 hours. I just think that Vortech could have designed it better.

 

Man I feel your pain, both Procharger & Vortec suffer from the same issues with high boost applications. Good luck!

 

No, we havent' gone to wider belts yet, but i'm thinking thats the plan when I take it back to Vortech in a couple weeks. We did reset the rev limiter from 8000 to 7200 which has been fine so far, no belt breakage. Thank you!

 

how much boost at 7200rpm ?

 

After we shredded a dozen belts at high boost on both Ktaylor's car, and trefling's car...posted above...I am convinced that the Kevlar reinforced belts are the ONLY way to go. We tried medium, loose, and tight adjustments on the belts, and they all snapped as we approached 500whp. Alignment was perfect.

KTaylor showed me the thicker and wider kevlar belts. They look like a part off an M1 Tank. KTaylor can probably put you in touch with the supplier, or maybe Vortech has another source for them.

 

I can,t see why you Vortech Guys don't use My Belt/Pulley redesign. I'm Making 12.5lbs of Boost, Works Fine........ One (1) adjustment in 15,000+ MILES. Never Squeals. Never Boost Loss. Before this I was adjusting the belt every 100 Miles. Not saying this would work for 18+ lbs of Boost, But I think this design with 10 rib pulleys would do the job.



Please See thread
Vortech Belt Slip/Noise Solution
https://my350z.com/forum/forced-induction/94422-vortech-belt-slip-noise-solution.html

 

TIMROD
Not saying your idea isnt a good one , or wouldnt help a little . But the belt slipping issue at higher boost levels [ 13psi and above ] is going to happen regaurdless of how you have the pulleys set up . With the stock set up , Im getting belt slippage at 13psi @5900rpm to redline . Before I went to the bigger IC . The belt started slipping at 13psi @ 6300rpm to redline . A serp belt with our kit will not grab after 13psi . The PSI between the blower and IC I would think would be 2 to 5 psi higher .