32 replies to this topic

[Carlos W]

 

There are other options apart from Kent cams. Have a look at the ACD RS or RS+ fantastic torque figures.

 

Where abouts can I look at these? And the torque figures? 

 

Is the ACD RS a 276 equivalent, and the RS+ a 286 equivalent?

 

The ACD-RS is similar to the Morspeed Ph2 with the lobe lift equalized to make rocker geometry correction a realistic proposition, and it has a touch more overlap lift. This means the cam will have a little more bite. Torque out put is the same, but hangs on a little longer at the top end of the rev range. I again overtime this cam to get the best from it. ML Motorsport uses this as the base from which it supplies its excellent fast road engine units to customers. Currently I have not seen any cam produce this much torque and still give a smooth idle. Real world testing on a number of installations has shown a consistent 87bhp and 92lbft on a 1330cc engine with single HIF44 or Twin HS4 carb combinations when using 1.3 roller tip rockers.

 

85 to 93lbft peaking at 3350 to 3750rpm for the ACD - RS.
Powerband 1250 - 6000

 

 

The ACD-RS+ is similar to the morspeed ph3 with the lobe lift equalized again, but with a crucial increase in the overlap lift. This means the engine is a little more cammy but pulls more top end and revs harder, This was as a response to Andy at ML, he and I share the opinion engines using the original cam lacks the punch of a true ultimate road cam. Again this cam is overtimed to make as much low end torque as possible.

 

87 to 98 lbft peaking at 4000 to 4350rpm for the ACD - RS+

 

Powerband 1750 - 6500

[Fordy]

 

 

There are other options apart from Kent cams. Have a look at the ACD RS or RS+ fantastic torque figures.

 

Where abouts can I look at these? And the torque figures? 

 

Is the ACD RS a 276 equivalent, and the RS+ a 286 equivalent?

 

The ACD-RS is similar to the Morspeed Ph2 with the lobe lift equalized to make rocker geometry correction a realistic proposition, and it has a touch more overlap lift. This means the cam will have a little more bite. Torque out put is the same, but hangs on a little longer at the top end of the rev range. I again overtime this cam to get the best from it. ML Motorsport uses this as the base from which it supplies its excellent fast road engine units to customers. Currently I have not seen any cam produce this much torque and still give a smooth idle. Real world testing on a number of installations has shown a consistent 87bhp and 92lbft on a 1330cc engine with single HIF44 or Twin HS4 carb combinations when using 1.3 roller tip rockers.

 

85 to 93lbft peaking at 3350 to 3750rpm for the ACD - RS.
Powerband 1250 - 6000

 

 

The ACD-RS+ is similar to the morspeed ph3 with the lobe lift equalized again, but with a crucial increase in the overlap lift. This means the engine is a little more cammy but pulls more top end and revs harder, This was as a response to Andy at ML, he and I share the opinion engines using the original cam lacks the punch of a true ultimate road cam. Again this cam is overtimed to make as much low end torque as possible.

 

87 to 98 lbft peaking at 4000 to 4350rpm for the ACD - RS+

 

Powerband 1750 - 6500

 

 

Sorry only just seen your reply.

 

Thanks for the figures, how do these compare to the Kent cam figures?

 

And how much are these AC Dodd cams?

[Fast Ivan]

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