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Old 02-07-2014, 03:16 PM   #21
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Originally Posted by MINI-P View Post
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?
**** YOU!!!!!!!1 and stuff

My track rat is a 99 but the street car that I bought the charger for originally was a 02

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Originally Posted by good2go View Post
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?
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.
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Old 02-07-2014, 04:43 PM   #22
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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?
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.
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Old 02-07-2014, 04:46 PM   #23
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Originally Posted by jeff_man View Post
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.
How and why?

You can have AC and/or PS AND have a 6 rib setup.
I did.
(I say "I did" because I removed my PS and converted it to electric. No more belt driven steering pump.)
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Old 02-07-2014, 05:30 PM   #24
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Originally Posted by Godless Commie View Post

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

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?
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Old 02-07-2014, 07:45 PM   #25
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Well I suppose that does answer my question. Thanks everyone. I didn't consider that bit about the 150 overlay for more belt traction. Interesting idea. I shall have to research this.
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Old 02-07-2014, 08:26 PM   #26
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Originally Posted by good2go View Post
Hmm (again), that should have still been within the max recommended speed though.

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?
Ya the amount of high rev track time TDR as put through a mp62 with very little maintenance leave me to believe it was something else that made it fail. I have put 20k hard miles on mine and never had a problem. About to open it up and regrease as it's 5 years old now.
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Old 03-19-2014, 03:15 PM   #27
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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.
The MP62 actually only needs 20-25 hp at that level.

CAPA : Eaton Superchargers
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