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hybrid
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question about timing system
do they have a chain for the dohc? or like a chain kit
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01-22-2009, 08:46 PM
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Just thinking out loud
Join Date: Nov 2001
Location: Close by
Posts: 6,884
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A belt turns one cam via the crank, then a chain turns the other.
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83 944 91 FJ80 84 Ram Charger (now gone) |
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01-22-2009, 09:04 PM
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hybrid
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i know and i want to rid of the crappy rubber belt and got to a soild chain. better performance
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01-22-2009, 09:06 PM
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Registered
Join Date: Jul 2000
Posts: 5,732
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Rubber belt is better performance. It has less weight than a chain so uses less torque to accelerate it. It doesn't transmit as much crank vibrations of pistons going up & dowm to valve train.
Competition Cams has even started making a belt setup for dirt track Chevy V8s.
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drew1 wife has 924 turbo |
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01-24-2009, 06:40 PM
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Registered
Join Date: Jan 2009
Location: Winter Park
Posts: 56
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The down side is that belts are fragile and short lived compared to chains. They also tend to break down with exposure to normal engine fluids. I can understand why one would want to switch to chains.
It'd be nice to have a timing system that would reliably last 160k or more like the timing chain on my Quad4 motor. The Quad4 uses a double row chain that's heavier than a belt but lighter than a v8 chain. Then again the Quad4 puts more power to the ground so the loss of torque due to the chain is less obvious or at least that would be the logical extrapolation from Drews comment above. Last edited by 83Zel944; 01-24-2009 at 09:29 PM.. |
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01-24-2009, 09:27 PM
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