To do cams or not to do?
Joined: Jun 2007
Posts: 2,947
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From: Charleston, SC
Originally Posted by chopper-world,Apr 22 2008, 06:30 PM
but car mods are now like bodybuilding supplements they all bs their gains and improvements and in reality they dun work at all...
Joined: Nov 2006
Posts: 5,217
Likes: 4
That skunk graph includes other mods as well.
No cams on this car have been proven to work.
You can get the cam gears and make a little power if and only if you have full engine tuning capability including timing (VAFC alone won't do).
No cams on this car have been proven to work.
You can get the cam gears and make a little power if and only if you have full engine tuning capability including timing (VAFC alone won't do).
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Joined: Jul 2007
Posts: 178
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From: Jacksonville NC/Tyler Tx
With the amount of R&D I am sure went into the head on this car just like on every other decent honda, I doubt you will see that gain with just cams.
In order to make more power with cams, you also have to have more compression because the added lift and duration bleed off dynamic compression by moving the intake closing point further after bottom dead center. Although with everything else there to take advantage of it and if you have the perfect semi mythical intake manifold reversion, that is where the power will be made.
In normal terms though, and 11:1 static motor will bleed down to 10.1:1 (just a number being thrown out there) with stock cams, add in 12 degrees of closing point and you just lost more dynamic compression and now you are down to 9.7:1 compression dynamic.
In order to make the "28whp" that S2 advertises, you would need a decent bump in compression and a damn good engine management. I love S2 products, I have used their valvetrains for years on my other hondas but like I said, they need more than just a set of cams to make that power.
In order to make more power with cams, you also have to have more compression because the added lift and duration bleed off dynamic compression by moving the intake closing point further after bottom dead center. Although with everything else there to take advantage of it and if you have the perfect semi mythical intake manifold reversion, that is where the power will be made.
In normal terms though, and 11:1 static motor will bleed down to 10.1:1 (just a number being thrown out there) with stock cams, add in 12 degrees of closing point and you just lost more dynamic compression and now you are down to 9.7:1 compression dynamic.
In order to make the "28whp" that S2 advertises, you would need a decent bump in compression and a damn good engine management. I love S2 products, I have used their valvetrains for years on my other hondas but like I said, they need more than just a set of cams to make that power.
