Tight LSA baby cam
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From: Australia
Tight LSA baby cam Anyone running a 110-111LSA baby cam? Something in the order of 212-216? Im thinking of going this route for my A4 but would like to hear from others first. My main concern is idle and off-idle characteristics, especially with maintaining cylinder pressure for all accessories.
Now my reckoning is that you can still get around 50* overlap so they should pull good power, yet the intack duration is still rather small so therefore maintaining cylinder pressure.
Now my reckoning is that you can still get around 50* overlap so they should pull good power, yet the intack duration is still rather small so therefore maintaining cylinder pressure.
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Originally Posted by MNR-0
Anyone running a 110-111LSA baby cam? Something in the order of 212-216? Im thinking of going this route for my A4 but would like to hear from others first. My main concern is idle and off-idle characteristics, especially with maintaining cylinder pressure for all accessories.
Now my reckoning is that you can still get around 50* overlap so they should pull good power, yet the intack duration is still rather small so therefore maintaining cylinder pressure.
Now my reckoning is that you can still get around 50* overlap so they should pull good power, yet the intack duration is still rather small so therefore maintaining cylinder pressure.
It all depends on the "combination"...
Ed
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From: Australia
OK. Thanks for the replies.
Ill get a custom one designed by myself and see what happens. If ti doesnt work, its only a cam change to fix it. Noone really runs this kind of odd-ball cam here in OZ. Everyone is into 222-228 cams.
Ill get a custom one designed by myself and see what happens. If ti doesnt work, its only a cam change to fix it. Noone really runs this kind of odd-ball cam here in OZ. Everyone is into 222-228 cams.
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Originally Posted by MNR-0
So do you think I will have idle problems?
For me I think a good set of small diameter headers (extractors) would help clean up the idle a bit. But for now, I'll live with the stock manifolds. I also added higher ratio rocker arms. The whole setup works pretty good with a stock torque converter'd car. The engine is very punchy at the touch of the throttle with good mid range pull. Gas mileage has stayed the same, maybe even slightly improved. With the cam & rocker arms I gained 3 mph in the 1/4 trap, mid-107 to mid-110, so I also gained some power in the upper rpm range too. Good luck with it!
Originally Posted by slow67
I can tell you one thing, your not going to get 50* @.050.
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From: Australia
Im mating it up to a 3000/2.0STR stally. I like being different, and believe you don't need big cams to make decent numbers and QTR times. I am also debating whether to use the new Crane "Accelerated Lift" 1.7 ratio rockers. It would change valve duration by a few degrees at 0.005" and 0.05" so I am concerned by that. Thinking a set of rollers would be better as the lift and overlap can then be wholly controlled by the cam.
