sven_ilegems 0 Posted November 25, 2006 Hello, I have a fairly std 1.9 8v (70.000 miles), except for a catcam with the folowing spec's: ************************** part number 4900312 VALVE TIMING: 288° valve lift INLET: 11.48mm EXHAUST: 11.48mm Inlet open 38° BTDC inlet closed 70°ABDC Exhaust open 74°BBDC inlet closed 34°ATDC Valve lift at TDC: INLET: 2.92mm valve lift at TDC: EXHAUST: 2.44mm ************************** I was planning to switch over to carbs this winter, but want to know first what this cam does to my car... (as it seems to have lots of duration, but no extra lift)... Now: powerband is smooth until 6500r/m with a little rough idling under 1300r/m Share this post Link to post Share on other sites
welshpug 1,622 Posted November 26, 2006 have you had it tested on a rolling road for an indication of how it goes? Share this post Link to post Share on other sites
smckeown 1 Posted November 26, 2006 wierd, that part isnt listed on the catcam website ? i have their 288 deg but the partnumber is different ? Share this post Link to post Share on other sites
sven_ilegems 0 Posted November 27, 2006 No, I don't have any RR figures... And yes, I also noticed that the particular number doesn't exist on their site... (allthough I have papers here from catcam with that number on it...) Does anyone know what the karakteristics are of a camshaft with more duration but equal lift? (I think the std 1.9 camshaft's lift is 11.5mm... right??) sven Share this post Link to post Share on other sites
Bam 0 Posted November 27, 2006 hi, use 12mm lift lift at tdc...think will push at 4500k...and pretty hard idle at around 1200 upm and spitting loose torque cheers. Share this post Link to post Share on other sites
sven_ilegems 0 Posted November 29, 2006 Does anyone know what the karakteristics are of a camshaft with more duration but equal lift? cheers. Sven Share this post Link to post Share on other sites
welshpug 1,622 Posted November 29, 2006 may be a slightly daft answer, but turn the key and drive it! you will soon discover the characteristics when you give it some stick. Share this post Link to post Share on other sites
