Unorthodox Racing Cam Sprokets
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Unorthodox Racing Cam Sprokets
Would these make any notable difference on a motor w/ only intake and exhuast? How about the sprokets and the pully kits?
I've read before they can bump power by 10-20+hp...is this tru?
Last question: they list them for the 1.8l Elantra(92-95)...don't those only have a 1.6 mitsu motor. I got a 97 w/ 1.8l and I thought that 96 was when they started using the 1.8l in the Elantra..?
I've read before they can bump power by 10-20+hp...is this tru?
Last question: they list them for the 1.8l Elantra(92-95)...don't those only have a 1.6 mitsu motor. I got a 97 w/ 1.8l and I thought that 96 was when they started using the 1.8l in the Elantra..?
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Cam sprockets work by advancing or retarding the cam timing rather than ignition timing... And while they can be good for a little bump in power or a little power-band smoothing, they will never come near 10 horsepower for a normally aspirated 4-banger on totally stock cams. Aftermarket cams may be a different deal...
Also, the 92-95 models of Elantra came with a 1.8L option that was indeed a Mitsubishi 4G6x derivative. These engines use dual camshafts where both shafts are driven from the timing belt -- so you can use the timing gears on those engines.
Hyundai's BETA engines drive only the exhaust cam with the timing belt; the intake cam is driven from a chain that comes from the exhaust cam. It's a messy design which also screws up any easy method of slapping cam sprockets in.
The only way to have fully adjustable cams in a BETA engine is to put a single adjustable sprocket on the exhaust cam, and then have a new chain sprocket built for the other side of the intake cam. It's a royal pain in the ass, costs quite a bit, is a bitch to tune and is really only worth a few horsepower at absolute most. And if you ever throw the cam out to upgrade, your modified adjustable chain sprocket goes with it.
Not worth the hassle unless you're going VERY radical on the top end of the engine.
-Red-
Also, the 92-95 models of Elantra came with a 1.8L option that was indeed a Mitsubishi 4G6x derivative. These engines use dual camshafts where both shafts are driven from the timing belt -- so you can use the timing gears on those engines.
Hyundai's BETA engines drive only the exhaust cam with the timing belt; the intake cam is driven from a chain that comes from the exhaust cam. It's a messy design which also screws up any easy method of slapping cam sprockets in.
The only way to have fully adjustable cams in a BETA engine is to put a single adjustable sprocket on the exhaust cam, and then have a new chain sprocket built for the other side of the intake cam. It's a royal pain in the ass, costs quite a bit, is a bitch to tune and is really only worth a few horsepower at absolute most. And if you ever throw the cam out to upgrade, your modified adjustable chain sprocket goes with it.
Not worth the hassle unless you're going VERY radical on the top end of the engine.
-Red-
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Oops, I thought I would clarify...
It's not worth a whole lot of money on stock cams, but if you're dealing with aftermarket cams, it may become more beneficial. I've seen people actually *reduce* their peak horsepower by 2-3HP (over what the new cams made max) but add a huge bump in midrange power by using their adjustable sprockets and aftermarket cams.
On highly modified motors, adjustable sprockets on the camshafts can indeed add quite a few extra ponies, or can help "level out" a peaky torque curve.
The prototype turbo-specific camshafts I have ordered come with adjustable sprockets and a considerable bump in duration and lobe seperation, along with a small adjustment in lift and ramp rate. These will likely retail for $1000 a set, but I also fully expect to gain 30+ wheel horsepower with these installed and properly tuned on an engine eating 24+psi and on Haltech engine mangement. That is, so long as the specs of the cam match what I have been quoted.
I'm not saying they're crap in whole, but they're' essentially useless on a "mostly stock" engine. If you haven't ported the head in a crazy way, built up the motor pretty good or aren't boosting something silly, then adjustable cam sprockets on stock cams will buy you almost zero after considering the tuning pains.
-Red-
It's not worth a whole lot of money on stock cams, but if you're dealing with aftermarket cams, it may become more beneficial. I've seen people actually *reduce* their peak horsepower by 2-3HP (over what the new cams made max) but add a huge bump in midrange power by using their adjustable sprockets and aftermarket cams.
On highly modified motors, adjustable sprockets on the camshafts can indeed add quite a few extra ponies, or can help "level out" a peaky torque curve.
The prototype turbo-specific camshafts I have ordered come with adjustable sprockets and a considerable bump in duration and lobe seperation, along with a small adjustment in lift and ramp rate. These will likely retail for $1000 a set, but I also fully expect to gain 30+ wheel horsepower with these installed and properly tuned on an engine eating 24+psi and on Haltech engine mangement. That is, so long as the specs of the cam match what I have been quoted.
I'm not saying they're crap in whole, but they're' essentially useless on a "mostly stock" engine. If you haven't ported the head in a crazy way, built up the motor pretty good or aren't boosting something silly, then adjustable cam sprockets on stock cams will buy you almost zero after considering the tuning pains.
-Red-