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| gogetta |
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check the filter in the tensioner
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| galapogos01 |
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Posts: 1139 Joined: 27th Feb 2005 Ride: Supercharged EF Fairmont Location: T.I. Performance HQ |
filter is clean.
new guide kit, shimmed up new tensioner (3x1mm washers), brand new chain -- still got the noise. The new chain was about 1cm shorter than the old, and the old guides were pretty worn. i thought it was going to be perfect, but alas... i am running jmm springs, i think i will try crow doubles perhaps. running out of options. hope it hasnt snapped the passenger side guide already, f**k if i have to go through that for a 4th time.
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| gogetta |
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1cm stretch...wow thats a lot!!!
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| galapogos01 |
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Posts: 1139 Joined: 27th Feb 2005 Ride: Supercharged EF Fairmont Location: T.I. Performance HQ |
car had 270,000km on it. no other problems (until i fitted the jmm springs).
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| edfairmont4.0 |
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JMM is f**k rubbish. I THINK they have a high lift short duration cam that causes harsh backlash.... f**k it off get and get a real cam...
http://www.camtechcams.com.au/cat/forde6.html Ive ordered the CT830.
_________________ ED Fairmont, Ghia mock DOHC-T 11.6 @ 118 Trying to get back to the 1/4! |
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| galapogos01 |
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Posts: 1139 Joined: 27th Feb 2005 Ride: Supercharged EF Fairmont Location: T.I. Performance HQ |
I think its spring related. Im not using a JMM cam - I have a Wade 1521a - but im using JMM springs. The cam has 0.524' lift at the valve.
The specs of the springs I know of are: CROW 7739 - 90lb CROW 7738 - 110lb CROW 7333 - 125lb (doubles) Does anyone know how many pound the JMM springs are and what a minimum would be for a cam with that much lift? What are others with cams of similar lift running?
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| Jaysen |
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edfairmont4.0 wrote: JMM is f**k rubbish. I THINK they have a high lift short duration cam that causes harsh backlash.... f**k it off get and get a real cam...
http://www.camtechcams.com.au/cat/forde6.html Ive ordered the CT830. carefull.... with a lower revving, relatively low comp engine you dont want too much duration. Mal and they boys @ Camtech are great, and dont get me wrong, they do have good grinds, but for a std rev range <10:1 comp 6cylinder, I wouldnt go much over 225* @ 0.050, & make up the rest of your AUC window with lift. Just my 2c
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| edfairmont4.0 |
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Jaysen wrote: edfairmont4.0 wrote: JMM is f**k rubbish. I THINK they have a high lift short duration cam that causes harsh backlash.... f**k it off get and get a real cam... http://www.camtechcams.com.au/cat/forde6.html Ive ordered the CT830. carefull.... with a lower revving, relatively low comp engine you dont want too much duration. Mal and they boys @ Camtech are great, and dont get me wrong, they do have good grinds, but for a std rev range <10:1 comp 6cylinder, I wouldnt go much over 225* @ 0.050, & make up the rest of your AUC window with lift. Just my 2c My motor is fully rebuilt with 10:1 compression, and a 360HP flowing head.... The engine shop convinced me that was the cam of choice for my setup and engine. I will revving my engine to 6200.
_________________ ED Fairmont, Ghia mock DOHC-T 11.6 @ 118 Trying to get back to the 1/4! |
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