Lightweight pulleys - Page 2 - Focaljet

**CaysE** · 05-28-2006, 09:42 AM

Quote:

Originally Posted by BrokenSVT

I was just cruisin' by, checking the 'wares and saw this discussion. The crank pulley, being largest, would carry the most rotational inertia. Basically, if you don't do the crank pulley along with the others, the difference would be even less negligible. Point being, the crank pulley is the most important of all when considering lightweight pulleys...

Greg

My main concern is longevity. I can only imagine that Ford put a dampener on the engine for a reason. Those of us looking for lightweight pulleys, but in stock diameters, wouldn't really want an all-out racecar, just something with a little more go to it. It will have to last. If removing the dampener is going to cut the engine's lifespan, it's not worth it. It would be better to just go with lightweight underdrive pulleys that are already on the market.

**BlkThunder** · 05-28-2006, 01:36 PM

nope man, this is all about supercharging and engine response for me. i could get a lightweight fly but thats really expensive and i dont wanna crack open the trannyi if i dont have to

**geostef** · 06-05-2006, 10:36 AM

I know this maynot fit to a general pulley chat but I have the results from the Focussport pulley. First of all I would like to say that the installation was combined with changing middle exh box from 2inc diam to 2,16 inch diam and removing compeletely the tail box *2inch diam. I will be able to post dyno tomorrow. I had with the previous exh and the stock diameter custom alloy pulley : 158,5 hp on the flywheel -have an 1,8l - and 18,2kgm torque. I got 166,8 hp and 19,2 kgm. That is almost 8 hp increase and 1kgm. From 1500rpm to 3500 rpm increase is amazing. Like I am driving a new machine. There will be a before and after dyno posted to see all differences. Even if I suppose that 3 hp came from exh. I would say that What makes the difference is the pulley's diameter and not weight.

PS. I have got rid off the problem with the A/C. When I turned on the A/C at 3rd or 4th scale the engine used to stop in traffic. Now everything works perfectly. As a matter of fact when I turned on the A/C there was a huge difference in power, like I was loosing 20hp ... I watched from the hack menu the temperatures during these hot days - 34 -38 Celcium and I was getting no more than 99 degrees. Voltage also is a little lower with the a/c on , ICE on *no subwoofer etc. etc,all lights on, voltage is low 12v

**ott** · 06-06-2006, 11:22 PM

If it's going to be made out of billet aluminum, I would assume that the pulley should also be hard anodized. In any case, I would like a set.

**BlkThunder** · 06-19-2006, 03:42 PM

cayse, blkthunder, cosvt03 and ott... guess we dont have enough yet

**CaysE** · 06-19-2006, 04:30 PM

This isn't exactly a group buy thread, I was just trying to gauge interest. At the moment, it doesn't seem too promising. I would much rather have a lightweight dampener on the crank, not a lightweight pulley. If CFM is unable to do this, then I have to research more with direct manufacturers like Fluidamper, et al, and then see if there's still interest.

05-28-2006, 01:36 PM	#27
BlkThunder Senior TEAM Member Join Date: Oct 2005 Location: Colorado Springs Posts: 1,357	Re: Lightweight pulleys nope man, this is all about supercharging and engine response for me. i could get a lightweight fly but thats really expensive and i dont wanna crack open the trannyi if i dont have to __________________ Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. There’s nothing enlightened about shrinking so that other people won’t feel insecure around you. We are all meant to shine, as children do. And as we let our own light shine, we unconsciously give other people permission to do the same.... Portal for those that are socially awkward!!!

06-05-2006, 10:36 AM	#28
geostef TEAM Member Join Date: May 2006 Location: Athens Posts: 476	Re: Lightweight pulleys I know this maynot fit to a general pulley chat but I have the results from the Focussport pulley. First of all I would like to say that the installation was combined with changing middle exh box from 2inc diam to 2,16 inch diam and removing compeletely the tail box 2inch diam. I will be able to post dyno tomorrow. I had with the previous exh and the stock diameter custom alloy pulley : 158,5 hp on the flywheel -have an 1,8l - and 18,2kgm torque. I got 166,8 hp and 19,2 kgm. That is almost 8 hp increase and 1kgm. From 1500rpm to 3500 rpm increase is amazing. Like I am driving a new machine. There will be a before and after dyno posted to see all differences. Even if I suppose that 3 hp came from exh. I would say that What makes the difference is the pulley's diameter and not weight. PS. I have got rid off the problem with the A/C. When I turned on the A/C at 3rd or 4th scale the engine used to stop in traffic. Now everything works perfectly. As a matter of fact when I turned on the A/C there was a huge difference in power, like I was loosing 20hp ... I watched from the hack menu the temperatures during these hot days - 34 -38 Celcium and I was getting no more than 99 degrees. Voltage also is a little lower with the a/c on , ICE on no subwoofer etc. etc,all lights on, voltage is low 12v __________________ PowerWorks 2044cc Zetec -CR 9.7:1, Diamond pistons with Eagle rods ,lightened - weightbalanced crankshaft, 2.4'' pulley, 5.36''crank pulley, FR head with 1mm Supertech inconel valves,ported and polished supercharger manifold, Mcnews custom SC cams, SVT manifold decat with 2.75'' custom pipes with custom middle box,MTX trans 4.06 final with HyperSingle Exedy and Torsen T2 *-- from JJ POWER* --** Last edited by geostef : 06-05-2006 at 10:45 AM.

06-06-2006, 11:22 PM	#29
ott Junior Member Join Date: Oct 2005 Location: SoCal Posts: 65	Re: Lightweight pulleys If it's going to be made out of billet aluminum, I would assume that the pulley should also be hard anodized. In any case, I would like a set. __________________ 2004 Competition Orange SVT Focus

06-19-2006, 03:42 PM	#30
BlkThunder Senior TEAM Member Join Date: Oct 2005 Location: Colorado Springs Posts: 1,357	Re: Lightweight pulleys cayse, blkthunder, cosvt03 and ott... guess we dont have enough yet __________________ Our deepest fear is not that we are inadequate. Our deepest fear is that we are powerful beyond measure. There’s nothing enlightened about shrinking so that other people won’t feel insecure around you. We are all meant to shine, as children do. And as we let our own light shine, we unconsciously give other people permission to do the same.... Portal for those that are socially awkward!!!

06-19-2006, 04:30 PM	#31
CaysE EDM Specialist Join Date: Dec 2004 Location: Bloomfield, NJ Posts: 7,378	Re: Lightweight pulleys This isn't exactly a group buy thread, I was just trying to gauge interest. At the moment, it doesn't seem too promising. I would much rather have a lightweight dampener on the crank, not a lightweight pulley. If CFM is unable to do this, then I have to research more with direct manufacturers like Fluidamper, et al, and then see if there's still interest. __________________ 2008 Cannondale F4 ··· Hi-brite · no mods (yet) 2003 Vermilion Red SVTf ··· hehehehehehe strictly/focused "It would take a miracle to make the entire Focus community get along. FF vs FJ, F-P vs FS, tuner vs tuner, racer vs ricer. What can you do?"

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