i was just wondering, aren't the stock cams adjustable with a certain tool? if so how much more benefit is there in getting some stage ones?? is the fact that they are more aggressive what gives them more power over aggressively adjusted stockers?? what are the approximate gains from each setup??
difference between stock and cranes...
smokethebear
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i was just wondering, aren't the stock cams adjustable with a certain tool? if so how much more benefit is there in getting some stage ones?? is the fact that they are more aggressive what gives them more power over aggressively adjusted stockers?? what are the approximate gains from each setup??
I'm no expert but this is what I can say.
a cam is alot more then retard or advance. it is ramp speed ( how fast the valves open), duration( how long their open), Lift (how high they open).
with the tool or adjustable cam gears you can change dynamic compression, and scavanging, by simply retarding and advancing the 2 cams.
a cam is alot more then retard or advance. it is ramp speed ( how fast the valves open), duration( how long their open), Lift (how high they open).
with the tool or adjustable cam gears you can change dynamic compression, and scavanging, by simply retarding and advancing the 2 cams.
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Marcy Motorsport has said in the past that stock cams with very aggressive timing can get you the same gains as stage 1 cams with very conservative timing. I think it's in the 6 or 7 horsepower range, as opposed to the 10-12 normally gained from stage 1s.
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Adjusting the timing on stock gains is good for a few hp, but no way could you get the same power as crane 1's unless the 1's were adjusted to make no power.
And I've run stock, crane 1, and crane 2. All have been adjusted.
And I've run stock, crane 1, and crane 2. All have been adjusted.
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I believe that's what I said. :dunno:aerostudent said:
I admit I may be way off on the power estimates, though.
A lot depends on how far out of spec your stock cams are too. Just because they came from the factory doesn't mean they are degreed properly. Still aftermarket will net you more power as stated but you might gain some just by setting the stock cams to spec too.
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I've yet to find a Duratec that was not set dead on from the factory, The Zetecs were too, but installers generally got the cam gear installs off a little from car to car so the theory was that the engines were inconsistent, but that's not the case.
2-4hp from adjusting the stock cams is it. There's no more to be had. Stage 1s will net a minimum of 5-6hp installed properly with a smooth idle, adjusted for power the idle gets choppy and the power gains go up to 12-14hp. Get cams, have them installed professionally unless you are really confident in your own ability.
2-4hp from adjusting the stock cams is it. There's no more to be had. Stage 1s will net a minimum of 5-6hp installed properly with a smooth idle, adjusted for power the idle gets choppy and the power gains go up to 12-14hp. Get cams, have them installed professionally unless you are really confident in your own ability.
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You mean I can have more power and the idle will lope? What's the downside, again? :evilgrin:MarcyMotorsport said:
I'm getting a yearly bonus before the end of this month, and it might be enough to pick up a nice Stage I cam/spring/tool set...
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The downside is that when adjusted for power, the idle is choppy, and off-idle torque is lower.
Adjusted for a smooth idle, these cams will add some nice torque to the midrange.
You = Missouri, choppy idle; lil' more top end power.
Me = California, smooth idle, better midrange grunt.
Adjusted for a smooth idle, these cams will add some nice torque to the midrange.
You = Missouri, choppy idle; lil' more top end power.
Me = California, smooth idle, better midrange grunt.
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Oh yeah, you guys have that tra-fick thing out there, don't you? :dunno:
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I don't know, I think it just being older and not wanting to put up with a finkey cam/car anymore....Z63R said:
-bix
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