Pullies and Cam gears
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From: Lombard, IL, USA
Pullies and Cam gears
I have a 99 ex 5 speed and i just bought an underdrive pully kit with the belts and a cam gear. Now here is the problem at hand. How do I install these? If anybody has detailed instructions and/or pictures that wuld be great. Thanx. Also are underdrive pulleys the same thing as power pulleys?
Modified by vtecpower3088 at 1:35 PM 2/12/2006
Modified by vtecpower3088 at 1:35 PM 2/12/2006
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Joined: Jan 2004
Posts: 6,456
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From: New England, USA
Re: Pullies and Cam gears (vtecpower3088)
Under-drive pulleys are the same as Power Pulleys. The basic theory is that you recover horsepower which would have been utilized by driving the Alternator, P/Steering and A/C Compressor.
The simplest (although not the prettiest) is to replace the crank mounted drive pulley with one of a smaller diameter. This way, it effects all three.
What pulleys were supplied with the kit?
The sad part about this procedure? It doesn't address the biggest Horsepower Hog hanging off the engine - The Water Pump. Responsible for sucking up anywhere from 15 to 25 Horsepower; and there's nothing to be done about it.
The Adjustable cam sprocket is another animal altogether. It does NOT develop more Horsepower, it shifts the power curve's peak up or down the RPM range depending on weather the cam is advanced or retarded from it's original position.
It's installation is the equivalent of 1/2 a timing belt job with a twist. It's a two part sprocket.; with a separate Hub and body. It's installation is specific to it's manufacturing and you must find (or procure) those instructions b4 you proceed because they differ from the oem procedure.
P
The simplest (although not the prettiest) is to replace the crank mounted drive pulley with one of a smaller diameter. This way, it effects all three.
What pulleys were supplied with the kit?
The sad part about this procedure? It doesn't address the biggest Horsepower Hog hanging off the engine - The Water Pump. Responsible for sucking up anywhere from 15 to 25 Horsepower; and there's nothing to be done about it.
The Adjustable cam sprocket is another animal altogether. It does NOT develop more Horsepower, it shifts the power curve's peak up or down the RPM range depending on weather the cam is advanced or retarded from it's original position.
It's installation is the equivalent of 1/2 a timing belt job with a twist. It's a two part sprocket.; with a separate Hub and body. It's installation is specific to it's manufacturing and you must find (or procure) those instructions b4 you proceed because they differ from the oem procedure.
P
Thread Starter
Junior Member
Joined: Sep 2005
Posts: 184
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From: Lombard, IL, USA
Re: Pullies and Cam gears (P_Adams)
thanx for the help. the kit came with a large power pulleyfor the power steering and a smaller "underdrive" pulley for the crankshaft. I was just wondering if I needed to buy another set up pulleys for a "power belt". I think I am going to return the cam gear because i thought it added horsepower. I really dont need it to level out the rpms. I will probably get fuel rails instead.
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Joined: Jan 2004
Posts: 6,456
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From: New England, USA
Re: Pullies and Cam gears (vtecpower3088)
Good move with the Adjustable Cam Sprocket. It's really intended to dial-in a custom ground cam with regards to it's interaction with other inprovements as they relate to power generation at certain RPM's.
It may be in your future furthur down the road, but there are other things to be done first to gain usable Horsepower.
P
It may be in your future furthur down the road, but there are other things to be done first to gain usable Horsepower.
P
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