5.9" Crank Pulley - Focaljet

**IslandFocus** · 06-28-2007, 09:08 PM

You guys wouldn't happen to have a picture of this pulley installed would ya? I'm looking at a 6" crank pulley and wanted to know if there would be any clearance issues.

**polarisman14** · 06-28-2007, 11:39 PM

Although I don't know from personal experience, I have heard that 6.0" is the absolute largest you can go without clearance issues

**pocus** · 07-01-2007, 11:55 AM

I have the 5.9" pulley on my car and it looks like there is a hair more room to be had.

**cfmfocus2** · 07-02-2007, 09:24 AM

I will see if I can have someone find a picture or take a picture of the larger 5.9 crank pulley installed.

**CFM Focus** · 07-03-2007, 11:17 PM

There is .500" between 5.9" crank pulley and stock water pump pulley. Serpentine belt sticks out from pulley about .150" so that leaves you with approximately .350" to increase the size of the pulley. I would go with 6.1" to be safe. Keep in mind a pulley of this size could cause problems with overdriving accessories. Not sure if it is worth the hassle/risk for an additional 1-2psi.

**IslandFocus** · 07-04-2007, 07:27 AM

Thanks guys!

**grbrgrnzx5** · 04-02-2008, 06:46 PM

Dragging this thread back from the dead...WARNING!

I recently purchased a used FocusSport Vortech/VF supercharger kit and I am planning on installing it within the next couple of months. My question is regarding this pulley...

My kit produces somewhere in the neighborhood of 9-10 PSI on a stock pulley. What kind of increase of boost would I be looking at with your larger pulley?

**IslandFocus** · 04-02-2008, 09:11 PM

I believe that only one person on this board has ran that pulley with the FS/VF kit and that was "adn_zx3". Most of us FS/VF supercharger guys used the CFM 5.7" pulley. Are you running the non-intercooled kit?

**grbrgrnzx5** · 04-03-2008, 03:47 PM

Intercooled kit. Or at least I will be running it as soon as I pick the whole thing up and install it.

What would be the difference in boost between the 5.7" and the 5.9"?

**IslandFocus** · 04-03-2008, 08:34 PM

I believe the stock pulley is around 5.5" so probably the same gain from going from a stock to the 5.7" pulley which is around 2-3psi.

**grbrgrnzx5** · 04-04-2008, 07:07 AM

All right, thanks, man. In other words, too much boost for a stock bottom end to handle without danger. Then it looks like I'll be going with the 5.7". Thanks for your help.

**IslandFocus** · 04-04-2008, 09:16 PM

Are you sure you're putting out 9-10psi?

**grbrgrnzx5** · 04-05-2008, 03:50 PM

I don't personally know, but I asked BUR_ZX3 (he's the one that I bought the kit from), and he told me that his kit was putting out 9-10 with the stock crank pulley. I'll get myself a quality boost gauge and find out for certain when I install it on my car.

Just FYI, the kit is the discontinued Stage 3 FocusSport Vortech/VF kit.

**IslandFocus** · 04-05-2008, 04:39 PM

OK, the 5.9" pulley might be a tad bit too much for a stock bottom end then. Try the 5.7" pulley and see where you're at.

**grbrgrnzx5** · 04-06-2008, 04:46 PM

Yeah, that's what I figured. I don't want to push it with 14 PSI with a stock bottom end. That would be crazy. 11-12 would be fine, I figure. Thanks for the help.

06-28-2007, 09:08 PM	#1
IslandFocus Senior TEAM Member Join Date: Oct 2004 Location: Nassau, Bahamas Posts: 2,316	5.9" Crank Pulley You guys wouldn't happen to have a picture of this pulley installed would ya? I'm looking at a 6" crank pulley and wanted to know if there would be any clearance issues. __________________ 2000 Focus ZX3: Xios Turbo Kit on Built Motor in Progress!!

06-28-2007, 11:39 PM	#2
polarisman14 Senior TEAM Member Join Date: Aug 2006 Location: Henniker, NH Posts: 3,188	Re: 5.9" Crank Pulley Although I don't know from personal experience, I have heard that 6.0" is the absolute largest you can go without clearance issues __________________ --UnFocused1-- --01 Focus "FCS-PWR" 350+whp Work-In-Progress-- <95 Ranger "SLOWNLO" Project #2: Dropped 4/7, side exit exhaust, audio, etc...> >86 Ninja 250R "GOPED" 50+mpg bullet: Slip-ons, Pod filters, Jet kit, LED signals, custom plate bracket<

07-01-2007, 11:55 AM	#3
pocus Senior TEAM Member Join Date: Sep 2002 Location: Janesville WI Posts: 1,317	Re: 5.9" Crank Pulley I have the 5.9" pulley on my car and it looks like there is a hair more room to be had. __________________ 358whp and 335TQ-23psi-93oct. New E85 build in progress.

07-02-2007, 09:24 AM	#4
cfmfocus2 Premier Sponsor Join Date: Nov 2004 Posts: 941	Re: 5.9" Crank Pulley I will see if I can have someone find a picture or take a picture of the larger 5.9 crank pulley installed. __________________ William - Sales Dept / Central Florida Motorsports, Inc. - Since 1996 william@c-f-m.com / Online Customer Service / 407.339.9211 We match ALL advertised prices on products we carry! Our Latest Products / SVT Focus Parts Video of our 12 second Vortech Supercharged 1/4 mile Focus / Engine Specs Come see our new show room!

07-03-2007, 11:17 PM	#5
CFM Focus Premier Sponsor Join Date: Jun 2002 Location: www.c-f-m.com Posts: 1,506	Re: 5.9" Crank Pulley There is .500" between 5.9" crank pulley and stock water pump pulley. Serpentine belt sticks out from pulley about .150" so that leaves you with approximately .350" to increase the size of the pulley. I would go with 6.1" to be safe. Keep in mind a pulley of this size could cause problems with overdriving accessories. Not sure if it is worth the hassle/risk for an additional 1-2psi. __________________ Central Florida Motorsports, Inc. - Since 1996 sales@c-f-m.com / NEW! Online Customer Service - Live Chat / 407.339.9211 / Subscribe to CFM Forum We match ALL advertised prices on products we carry! Our Latest Products / SVT Focus Parts Video of our 12 second Vortech Supercharged 1/4 mile Focus / Specs / Timeslip / Dyno .:Focus Showoff:. Picture and Video Gallery

07-04-2007, 07:27 AM	#6
IslandFocus Senior TEAM Member Join Date: Oct 2004 Location: Nassau, Bahamas Posts: 2,316	Re: 5.9" Crank Pulley Thanks guys! __________________ 2000 Focus ZX3: Xios Turbo Kit on Built Motor in Progress!!

04-02-2008, 06:46 PM	#7
grbrgrnzx5 Senior TEAM Member Join Date: Jun 2005 Location: Olympia Washington Posts: 1,366	Re: 5.9" Crank Pulley Dragging this thread back from the dead...WARNING! I recently purchased a used FocusSport Vortech/VF supercharger kit and I am planning on installing it within the next couple of months. My question is regarding this pulley... My kit produces somewhere in the neighborhood of 9-10 PSI on a stock pulley. What kind of increase of boost would I be looking at with your larger pulley? __________________ Lookin' fast in the slow lane RIP, Jellybean (11/16/2001-6/16/2008)...you will be greatly missed. 2003 Infra Red ZX3 SVT-Totally stock...FOR NOW!

04-02-2008, 09:11 PM	#8
IslandFocus Senior TEAM Member Join Date: Oct 2004 Location: Nassau, Bahamas Posts: 2,316	Re: 5.9" Crank Pulley I believe that only one person on this board has ran that pulley with the FS/VF kit and that was "adn_zx3". Most of us FS/VF supercharger guys used the CFM 5.7" pulley. Are you running the non-intercooled kit? __________________ 2000 Focus ZX3: Xios Turbo Kit on Built Motor in Progress!!

04-03-2008, 03:47 PM	#9
grbrgrnzx5 Senior TEAM Member Join Date: Jun 2005 Location: Olympia Washington Posts: 1,366	Re: 5.9" Crank Pulley Intercooled kit. Or at least I will be running it as soon as I pick the whole thing up and install it. What would be the difference in boost between the 5.7" and the 5.9"? __________________ Lookin' fast in the slow lane RIP, Jellybean (11/16/2001-6/16/2008)...you will be greatly missed. 2003 Infra Red ZX3 SVT-Totally stock...FOR NOW!

04-03-2008, 08:34 PM	#10
IslandFocus Senior TEAM Member Join Date: Oct 2004 Location: Nassau, Bahamas Posts: 2,316	Re: 5.9" Crank Pulley I believe the stock pulley is around 5.5" so probably the same gain from going from a stock to the 5.7" pulley which is around 2-3psi. __________________ 2000 Focus ZX3: Xios Turbo Kit on Built Motor in Progress!!

04-04-2008, 07:07 AM	#11
grbrgrnzx5 Senior TEAM Member Join Date: Jun 2005 Location: Olympia Washington Posts: 1,366	Re: 5.9" Crank Pulley All right, thanks, man. In other words, too much boost for a stock bottom end to handle without danger. Then it looks like I'll be going with the 5.7". Thanks for your help. __________________ Lookin' fast in the slow lane RIP, Jellybean (11/16/2001-6/16/2008)...you will be greatly missed. 2003 Infra Red ZX3 SVT-Totally stock...FOR NOW!

04-04-2008, 09:16 PM	#12
IslandFocus Senior TEAM Member Join Date: Oct 2004 Location: Nassau, Bahamas Posts: 2,316	Re: 5.9" Crank Pulley Are you sure you're putting out 9-10psi? __________________ 2000 Focus ZX3: Xios Turbo Kit on Built Motor in Progress!!

04-05-2008, 03:50 PM	#13
grbrgrnzx5 Senior TEAM Member Join Date: Jun 2005 Location: Olympia Washington Posts: 1,366	Re: 5.9" Crank Pulley I don't personally know, but I asked BUR_ZX3 (he's the one that I bought the kit from), and he told me that his kit was putting out 9-10 with the stock crank pulley. I'll get myself a quality boost gauge and find out for certain when I install it on my car. Just FYI, the kit is the discontinued Stage 3 FocusSport Vortech/VF kit. __________________ Lookin' fast in the slow lane RIP, Jellybean (11/16/2001-6/16/2008)...you will be greatly missed. 2003 Infra Red ZX3 SVT-Totally stock...FOR NOW!

04-05-2008, 04:39 PM	#14
IslandFocus Senior TEAM Member Join Date: Oct 2004 Location: Nassau, Bahamas Posts: 2,316	Re: 5.9" Crank Pulley OK, the 5.9" pulley might be a tad bit too much for a stock bottom end then. Try the 5.7" pulley and see where you're at. __________________ 2000 Focus ZX3: Xios Turbo Kit on Built Motor in Progress!!

04-06-2008, 04:46 PM	#15
grbrgrnzx5 Senior TEAM Member Join Date: Jun 2005 Location: Olympia Washington Posts: 1,366	Re: 5.9" Crank Pulley Yeah, that's what I figured. I don't want to push it with 14 PSI with a stock bottom end. That would be crazy. 11-12 would be fine, I figure. Thanks for the help. __________________ Lookin' fast in the slow lane RIP, Jellybean (11/16/2001-6/16/2008)...you will be greatly missed. 2003 Infra Red ZX3 SVT-Totally stock...FOR NOW!

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode