As it states, are there any benefits to installing the LSJ cams on a supercharged L61 head? If they are timed to the markers on the L61 cam gears will they act differently? All I've found is that they are timed differently, but is this due to the cam profile or the actual timing of the cam gear?
they're timed differently due to the actual grind. LSJ and L61 cam gears are the same p/n
Thanks Pj. Now I assume these cams on a S/C L61 would make the engine preform better, right?
DaFlyinSkwirl (Pj) v2.0 wrote:they're timed differently due to the actual grind. LSJ and L61 cam gears are the same p/n
Really? Where does the factory timing difference come from? Cam gears have the slot in a different spot? I've been thinking of running an lsj head with lsj cams once the motor gets built do I can have cam position sensing for the standalone (that will be going in at the same time).
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Leafy (Club Jeffie FEA man) wrote:DaFlyinSkwirl (Pj) v2.0 wrote:they're timed differently due to the actual grind. LSJ and L61 cam gears are the same p/n
Really? Where does the factory timing difference come from? Cam gears have the slot in a different spot? I've been thinking of running an lsj head with lsj cams once the motor gets built do I can have cam position sensing for the standalone (that will be going in at the same time).
no.
the CAMS have the slot in a different spot.
the gears are the same.
I thought I already said this?
Never mind I read your post wrong.
1994 Saturn SL2 Home Coming Edition: backup car
2002 Chevy Cavalier LS Sport Coupe: In a Junk Yard
1995 Mazda Miata R-package Class=STR
Sponsored by:
Kronos Performance
WPI Class of '12 Mechanical Engineering
WPI SAE Risk and Sustainability Management Officer
Hmmm I wasn't aware they're timed differently. A better bet, however, is usign the LE5 exhaust cam (if it is NOT timed much differently). It actually has a more aggressive spec than either the L61 or LSJ. That's also provided that he LE5 cam will accept an L61 cam gear...
oldskool wrote:Hmmm I wasn't aware they're timed differently. A better bet, however, is usign the LE5 exhaust cam (if it is NOT timed much differently). It actually has a more aggressive spec than either the L61 or LSJ. That's also provided that he LE5 cam will accept an L61 cam gear...
it won't. the VVT cams are only compatible with VVT cars.. and even still, I don't think the LE5 and LNF cams are cross compatible.
There's a .pdf document with all the camshaft info on it I'll see if I can host it someplace
If we're thinking of the same thing, it's an excerpt from the original build book. I have both LE5 cams and L61 cam gears at home; I'll dispell it the old fashioned way lol
One more question though, how are LSJ guys using the GMR camshafts? I know they need the cam position provisions pressed on, but how do they time the cam to the crank with a misaligned gear? Oldfashioned way agaoni, degree wheel?
The lsj uses a different cam
profile than the l61 is what PJ is trying to say, it has nothing to do with cam gears.
Its most likely a grind for a blower application, as where the l61 was designed for n/a, I know this is all obvious, but I think people are trying to read more into it than is actually there.
Slowzee wrote:The lsj uses a different cam profile than the l61 is what PJ is trying to say, it has nothing to do with cam gears.
Its most likely a grind for a blower application, as where the l61 was designed for n/a, I know this is all obvious, but I think people are trying to read more into it than is actually there.
so would the different profile make there be any timing issues with using the cam/cams in a supercharged l61. or are we just talking miniscule changes?
Slowzee wrote:The lsj uses a different cam profile than the l61 is what PJ is trying to say, it has nothing to do with cam gears.
Its most likely a grind for a blower application, as where the l61 was designed for n/a, I know this is all obvious, but I think people are trying to read more into it than is actually there.
. He said the timing was different due to the slot on the cam that accepts the gear. If that's the case I don't see how it could run a cam designed for the l61 straight up and not have major issues, like the gmr cams for example. That's what i was trying to clarify...
I found the camshaft information sheet if anyone wants me to email it to them.
some corrections:
2007+ L61 intake, LSJ intake and LSJ exhaust cam are the same CASTING.
