braveops Posted January 20, 2014 Report Share Posted January 20, 2014 i finally got off my ass and pulled valve cover off my 2ltr as i was told it had a cam with the car on one of the heads and it says its a m651 ?? and i cant seem to figure out on the specs for it as i dont know the brand ? thanx for any info 1 Quote Link to comment
Sealik Posted January 20, 2014 Report Share Posted January 20, 2014 Measure the small (base) and large part of a lobe. Subtract one from the other....then multiply the result by 1.48.......= lift. Duration is a whole new ball of wax Quote Link to comment
braveops Posted January 20, 2014 Author Report Share Posted January 20, 2014 Measure the small and large part of a lobe. Subtract one from the other....then multiply the result by 1.48.......= lift. Duration is a whole new ball of wax not sure what you mean height and width? Quote Link to comment
ggzilla Posted January 20, 2014 Report Share Posted January 20, 2014 Which 2 liter is this about? Quote Link to comment
Sealik Posted January 20, 2014 Report Share Posted January 20, 2014 These 2 measurements Quote Link to comment
braveops Posted January 20, 2014 Author Report Share Posted January 20, 2014 These 2 measurements ok thats what i thought you meant but was not sure Which 2 liter is this about? ?? this is the motor in my white caged car that i have not touch yet other than firing it up Quote Link to comment
Sealik Posted January 20, 2014 Report Share Posted January 20, 2014 Is there aftermarket springs, retainers....lash pads? What head is it? Pics Quote Link to comment
braveops Posted January 20, 2014 Author Report Share Posted January 20, 2014 Is there aftermarket springs, retainers....lash pads? What head is it? Pics not sure it was running engine w58 head with 40 or 45 dellorto and header Quote Link to comment
TENDRIL Posted January 20, 2014 Report Share Posted January 20, 2014 most stamps are on the back of the cam is this where you found the number? Quote Link to comment
braveops Posted January 20, 2014 Author Report Share Posted January 20, 2014 45 dellorto cannon 827 intake. i cant read other stamp has some blue stripes on the springs. i got measurement of 1.435 x1.150 and came up with .4218 lift? i see writing on cam that looks like it was sent to specialty Quote Link to comment
ggzilla Posted January 20, 2014 Report Share Posted January 20, 2014 The pics help. Looks like an L-series engine. M651 on an L20B is good for 3500-7000 rpm power band. So use twin Weber 45s and let it rev up. Quote Link to comment
braveops Posted January 21, 2014 Author Report Share Posted January 21, 2014 The pics help. Looks like an L-series engine. M651 on an L20B is good for 3500-7000 rpm power band. So use twin Weber 45s and let it rev up. oh ..i only have a single 45 on it but i do have some old su`s not sure on size but no manifold for them :( yes it is a l20b Quote Link to comment
Sealik Posted January 21, 2014 Report Share Posted January 21, 2014 45 dellorto cannon 827 intake. i cant read other stamp has some blue stripes on the springs. i got measurement of 1.435 x1.150 and came up with .4218 lift? i see writing on cam that looks like it was sent to specialty Calculations are off a bit What were the measurements? Subtract one from the other....then multiply the result by 1.48 Quote Link to comment
braveops Posted January 21, 2014 Author Report Share Posted January 21, 2014 i got measurement of 1.435 -1.150x1.48=4218...or 29mmx36mm Quote Link to comment
Sealik Posted January 21, 2014 Report Share Posted January 21, 2014 Well...if your lobe lift is.................. 1.435 And your base circle is...................1.150 1.435-1.150 = .285...x 1.48 =. 4218 Not much more than stock Quote Link to comment
braveops Posted January 21, 2014 Author Report Share Posted January 21, 2014 ?? it dont sound stock rumbles when idles pretty good? Quote Link to comment
Sealik Posted January 21, 2014 Report Share Posted January 21, 2014 ?? it dont sound stock rumbles when idles pretty good? Carefully re-measure....making sure the calipers are sitting flat and true to the lobe Quote Link to comment
datzenmike Posted January 21, 2014 Report Share Posted January 21, 2014 Stock is about 0.413" Quote Link to comment
braveops Posted January 21, 2014 Author Report Share Posted January 21, 2014 ok will recheck in the morning when i can get back to the shop Quote Link to comment
RTB Posted January 21, 2014 Report Share Posted January 21, 2014 To give you an Idea where you are my cam lift is.535 and that is a pretty aggressive cam. So you probably want to be under.5 Quote Link to comment
Sealik Posted January 21, 2014 Report Share Posted January 21, 2014 To give you an Idea where you are my cam lift is.535 and that is a pretty aggressive cam. So you probably want to be under.5 .535....getting up there Duration is in the mid 290s..+...?? Not really conducive for a DD Track? Quote Link to comment
ggzilla Posted January 21, 2014 Report Share Posted January 21, 2014 A single 45 flows almost as much as twin 45s, so its OK still flows more than dual 38mm SUs Quote Link to comment
RTB Posted January 21, 2014 Report Share Posted January 21, 2014 .535....getting up there Duration is in the mid 290s?? Not really conducive for a DD Track? Duration is a secret. But it's going to be a fun street car. Not a dd Quote Link to comment
datzenmike Posted January 21, 2014 Report Share Posted January 21, 2014 .535....getting up there Duration is in the mid 290s..+...?? Not really conducive for a DD Track? It'll be fun for about 10 seconds out of every 10 minutes driven on the street. Quote Link to comment
RTB Posted January 21, 2014 Report Share Posted January 21, 2014 Its duration isn't that high. Quote Link to comment
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