Procharger Install Prep

me2dumb4college · October 11th, 2011, 10:40 AM

Hi all,

So I took my Mustang to Evolution Auto Care for them to make sure I have everything I needed for my Procharger install on my 01 GT Convertible.

They said the blower looked pretty good, and I have everything I needed for them to put it on; however, they suggested I replace the Harmonic Balancer since mine was showing a lil wear on the rubber.

I did a little research and the Powerbond SFI seems like a good brand, but am unsure as to what size I need.

Eagle2000GT · October 11th, 2011, 11:03 AM

According to Innovators West the stock size is 6.5".

For reference: A 10% overdrive pulley is 7.25" and a 15% overdrive pulley is 7.5". A 10% underdrive pulley is 5.875".

me2dumb4college · October 11th, 2011, 01:22 PM

What should I expect to spend on a new one? I take it there's no way to replace just the rubber?

Eagle2000GT · October 11th, 2011, 03:03 PM

I had to replace my crank pulley because the previous owner had installed underdrive pulleys. I think I paid $250 at a dealership. What are your plans? How much boost are you planning on running this year? Do you intend to add more boost later? If so it might be better to get the $440 Innovative West 10% overdrive crank pulley. It allows you to generate more boost with larger supercharger pulleys. But if you're running a stock motor it might be too much right now.

For example, a P1SC generates approximately 12 psi witn a 3.4" pulley and a stock crank. You can get the same thing with a 3.85" pulley (normally an 8 psi pulley) and a 10% overdrive crank pulley. Both spin the blower at 46,000 rpms at 6000 engine rpms. (P1SC max blower rpms is 62,000.) There is a lot less risk of belt slippage with a 3.85" pulley.

me2dumb4college · October 11th, 2011, 03:29 PM

me2dumb4college · October 11th, 2011, 03:36 PM

The pulley has to be a 3.60, I'm guessing 6-8psi? I don't really want to go crazy on a stock block and I don't have any plans to upgrade the internals, but I do have the 42 injectors and high flow pump just in case I change my mind.

Eagle2000GT · October 11th, 2011, 03:41 PM

If your P1SC pulley is 3.6" then you will most likely be making around 10 psi. I'm making 9 psi with a 3.7" pulley. You would not want to run that supercharger pulley on a stock motor with an overdrive pulley.

me2dumb4college · October 11th, 2011, 03:56 PM

My bad, it's the 3.85, i just went out there with a ruler...

WickedSnake00 · October 11th, 2011, 04:01 PM

Just going to throw this out there-
If you step up to a larger crank pulley, you may want a larger alternator pulley. Some people go with a much larger crank pulley w/o changing the alternator, and then wonder why they're frying alternators left and right.

me2dumb4college · October 11th, 2011, 04:08 PM

Originally Posted by WickedSnake00

Just going to throw this out there-
If you step up to a larger crank pulley, you may want a larger alternator pulley. Some people go with a much larger crank pulley w/o changing the alternator, and then wonder why they're frying alternators left and right.

I do run a system in the car... got a capaciter for 2 10's and 4/2 chan amps for all door speakers... there's still prob a large draw on the alternator

Think I should stick with the stock size pulley?

WickedSnake00 · October 11th, 2011, 04:40 PM

Originally Posted by me2dumb4college

I do run a system in the car... got a capaciter for 2 10's and 4/2 chan amps for all door speakers... there's still prob a large draw on the alternator

Think I should stick with the stock size pulley?

It not so much about the draw as the physical constraints of the alternator itself. Much like your engine there's a certain RPM limit before damage starts occuring.

If you are inclined to keep it at the factory RPM, make sure the ratio of your crank pulley to alternator pulley stays the same.

Ex; stock is 4" crank, 2" alternator, and you go to a 6" crank. You'll want a 3" alternator pulley to compensate for the size change.

me2dumb4college · October 11th, 2011, 04:44 PM

Keep it at the same ratio, got it... are they 2:1 or was that just you using that as an example?

Eagle2000GT · October 11th, 2011, 09:38 PM

That was just an example the crank pulley is 6.5". I don't know what the altenator pulley is.

WickedSnake00 · October 11th, 2011, 09:45 PM

Originally Posted by Eagle2000GT

That was just an example the crank pulley is 6.5". I don't know what the altenator pulley is.

You've got to do all the mathematizing yourself.

October 11th, 2011, 10:40 AM	#1
me2dumb4college Enthusiast Join Date: Sep 2011 Location: Reston, VA Posts: 866 iTrader: 0 reviews	Procharger Install Prep Hi all, So I took my Mustang to Evolution Auto Care for them to make sure I have everything I needed for my Procharger install on my 01 GT Convertible. They said the blower looked pretty good, and I have everything I needed for them to put it on; however, they suggested I replace the Harmonic Balancer since mine was showing a lil wear on the rubber. I did a little research and the Powerbond SFI seems like a good brand, but am unsure as to what size I need.

October 11th, 2011, 11:03 AM	#2
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	According to Innovators West the stock size is 6.5". For reference: A 10% overdrive pulley is 7.25" and a 15% overdrive pulley is 7.5". A 10% underdrive pulley is 5.875". __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

October 11th, 2011, 03:03 PM	#4
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	I had to replace my crank pulley because the previous owner had installed underdrive pulleys. I think I paid $250 at a dealership. What are your plans? How much boost are you planning on running this year? Do you intend to add more boost later? If so it might be better to get the $440 Innovative West 10% overdrive crank pulley. It allows you to generate more boost with larger supercharger pulleys. But if you're running a stock motor it might be too much right now. For example, a P1SC generates approximately 12 psi witn a 3.4" pulley and a stock crank. You can get the same thing with a 3.85" pulley (normally an 8 psi pulley) and a 10% overdrive crank pulley. Both spin the blower at 46,000 rpms at 6000 engine rpms. (P1SC max blower rpms is 62,000.) There is a lot less risk of belt slippage with a 3.85" pulley. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

October 11th, 2011, 03:41 PM	#7
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	If your P1SC pulley is 3.6" then you will most likely be making around 10 psi. I'm making 9 psi with a 3.7" pulley. You would not want to run that supercharger pulley on a stock motor with an overdrive pulley. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

October 11th, 2011, 04:01 PM	#9
WickedSnake00 MM's king of Neon's 404 - car not found 17.81@87 Join Date: Aug 2010 Location: Diesel Engine Capital of the World, Columbus, IN Posts: 7,374 iTrader: 0 reviews	Just going to throw this out there- If you step up to a larger crank pulley, you may want a larger alternator pulley. Some people go with a much larger crank pulley w/o changing the alternator, and then wonder why they're frying alternators left and right. __________________ Official Secondhand Snake Build Thread Here Looks Like a Cobra, Sounds Like a Cobra, Tastes Like a Cobra, Not a Cobra. For Sale: P71 Interceptor motor

October 11th, 2011, 01:22 PM	#3
me2dumb4college Enthusiast Join Date: Sep 2011 Location: Reston, VA Posts: 866 iTrader: 0 reviews	What should I expect to spend on a new one? I take it there's no way to replace just the rubber?

October 11th, 2011, 03:29 PM	#5
me2dumb4college Enthusiast Join Date: Sep 2011 Location: Reston, VA Posts: 866 iTrader: 0 reviews

October 11th, 2011, 03:36 PM	#6
me2dumb4college Enthusiast Join Date: Sep 2011 Location: Reston, VA Posts: 866 iTrader: 0 reviews	The pulley has to be a 3.60, I'm guessing 6-8psi? I don't really want to go crazy on a stock block and I don't have any plans to upgrade the internals, but I do have the 42 injectors and high flow pump just in case I change my mind.

October 11th, 2011, 03:56 PM	#8
me2dumb4college Enthusiast Join Date: Sep 2011 Location: Reston, VA Posts: 866 iTrader: 0 reviews	My bad, it's the 3.85, i just went out there with a ruler...

October 11th, 2011, 04:44 PM	#12
me2dumb4college Enthusiast Join Date: Sep 2011 Location: Reston, VA Posts: 866 iTrader: 0 reviews	Keep it at the same ratio, got it... are they 2:1 or was that just you using that as an example?

October 11th, 2011, 09:38 PM	#13
Eagle2000GT I Post Entirely Way Too Much 2000 Mustang GT 12.73@111.36 Join Date: Aug 2007 Location: Shelbyville, IN Posts: 5,311 iTrader: 1 reviews	That was just an example the crank pulley is 6.5". I don't know what the altenator pulley is. __________________ ProCharger P-1SC, 9 psi, STD 396/383; Uncorrected 388/375; SAE 383/370 Mods list in Garage.

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