Originally Posted by MINI-P (Post 1099152)

Dang, Jeff, why the hate, bro?

I made a little over 200 whp @ 10 lbs boost, 4 rib belt, stock internals on a powercard as well and never had an issue. Mine nor Jeff's cars are VVT. Don't know if that makes a difference. Now I did grenade a 5 speed transmission at that power. But that coulda just as easily been operator error as I was just learning to drive at the track.

You gonna yell at me too, Jeff? :party:

Originally Posted by good2go (Post 1100013)

The overlay always seemed like the lesser of evils if you were stuck with no auto-tensioner and a 4-rib setup, as you could retain more belt traction by keeping a larger nose pulley in conjunction with the overlay. Do you think that is not so?

Originally Posted by good2go (Post 1100013)

Hmm, I'm assuming you must have a BRP type kit then, right? I don't recall any 6-rib setup, let alone with an auto-tensioner, being available for the later generation Moss/TDR hotside kits, other than custom one-offs.

I am curious why that overlay pulley messed up your blower though. Were you already running a really small nose pulley when you added it, or what?

The overlay always seemed like the lesser of evils if you were stuck with no auto-tensioner and a 4-rib setup, as you could retain more belt traction by keeping a larger nose pulley in conjunction with the overlay. Do you think that is not so?

Originally Posted by jeff_man (Post 1100039)

6 rib is a waste of money unless you have no PS or AC. If you have PS or both stick with a 4 rib.

Originally Posted by Godless Commie (Post 1100059)

Overspinnning killed my blower. 150/65 mm pulleys, and 6K to redline rpms did it in.
For the record, we do not have 55mph speed limits over here, and I cruise at 100mph+ on the freeway.

Originally Posted by good2go (Post 1100074)

Hmm (again), that should have still been within the max recommended speed though. :dunno:

150 / 65.5 = 2.29 ratio X 7200 rpm(engine) = 16,489 rpm(blower)

vs. max recommended speed of 17,280 rpm

Did you raise the redline above the stock 7200?

Originally Posted by Leafy (Post 1099979)

C-C-C-C-C-C-C-C-COMBO BREAKER



Yes 200 is probably safe, since if I remember the MP62 data correctly at 200hp its requiring ~30-40 hp from the belt to drive it, so your rods, piston, and crank are experiencing ~240hp, but its only showing up on the dyno as 200.