[NastyStang113]

I finally got one of VMP's new pulleys for the Roush TVS. It allows the use of the stock crank pulley and water pump pulley. No more running the Steeda UDPs which means no more broken water pump pulleys. I broke two in the course of a couple months. Apparently they can't take the load and abuse. I'm currently running a 3.25" blower pulley, stock crank pulley, stock water pump pulley, and a 90mm idler directly below the blower. The pulley uses a press in hub and than the pulley bolts to the hub. So, pulleys can be swapped fairly easy.

I suspect due to belt wear and how much dust it was putting off that it was probably slipping quite a bit with such a small blower and crank pulley. Another good thing about the pulley is that I really can't see the belt coming off of it. This set-up should also create more belt wrap so there are no issues of it slipping currently. I'm going to be putting a brand new belt on it and watch how it wears very closely to see if there was a problem previously. I'll post in a couple of weeks about how that turns out. I'm very happy with the set-up and can't wait to try some more things out in the future!

Steeda Water Pump Pulley Damage

First time:



Second Time:



3.25" Pulley & Hub.



VMP Pulley Tool I used to remove the 2.65" pulley and install the new 3.25" pulley:





Hub Installation:









Previous Set-Up Dyno - 506 rwhp / 475 rwtq @ 10 psi:



New Set-Up Dyno - 524 rwhp / 502 rwtq @ 11 psi:

[mustangdave]

Sweet! Do you think the Steeda failures were from the added stress of the blower, or are they just poorly made?

[Wind-Farmer]

mmm sexy! Lets see some videos!!!!

[NastyStang113]

Originally Posted by mustangdave

Sweet! Do you think the Steeda failures were from the added stress of the blower, or are they just poorly made?

I'm sure it's from the added stress of the blower, especially the load when downshifting hard. Both of these times were after downshifting to either 4th or 3rd at "highway-ish" speeds and than running up into 5th. I can't blame Steeda because they didn't build it for this but my issue is that the stock water pump pulley holds up to anything you throw at it.

[anthony05gt]

I would think it should have held up considering the stocker holds up to the abuse.

[Stryfe8822]

524RWHP! WTF! how do you keep that much power from spinning? What are your track times?

[NastyStang113]

Originally Posted by Stryfe8822

524RWHP! WTF! how do you keep that much power from spinning? What are your track times?

Nitto NT555R 305/35/20s. It ran 11.87 at 119 mph with a 1.76 60' time back when I had 463 rwhp and a stock clutch. I haven't been able to get to a track with good track prep.

[Stryfe8822]

Well that is awesome!

[lightblade]

Why not go with an overdirve crank pulley while your at, good for more boost and less belt slip.

[NastyStang113]

Originally Posted by lightblade

Why not go with an overdirve crank pulley while your at, good for more boost and less belt slip.

Exactly. Good for boost. I don't need anymore of it.

[forensicsteve]

Really good times for a big 20 inch wheel and Nittos. Thought about getting something a little stickier than Nittos?

I haven't been able to get to a track with good track prep.

You know when our track is well prepped.......all sorts of things start breaking on the cars....mostly rearends, transmission, clutches....lol

[NastyStang113]

Originally Posted by forensicsteve

Really good times for a big 20 inch wheel and Nittos. Thought about getting something a little stickier than Nittos?

Yes. I'm going to be ditching this wheel and tire set-up for something else and running the Nitto NT05 315/35/20s and 275/35/20s on the street and than probably some Holeshots and slicks for the track than it's on ..