Cam Timing with Supercharger
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- Sung
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From: Waukesha, WI
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Originally Posted by s2000Junky' timestamp='1324447001' post='21252850
^^^Micheal should have stuck with that face and quit wile he was ahead 
RIP brotha
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sideways
The change of minus two degrees intake and no change in the exhaust resulted in 17 ft lbs and 33 rwhp
(ex 0) (in -2)
biggest top end change was seen with minus two degrees intake and plus one degree exhaust. It resulted in an additional 19 ft lbs torque and 25 rwhp
(ex +1) (in -2)
please set it up the way sideways ran the test not
(ex +2) (in -1)
the huge increase came from the (in -2)
the reduced overlap comes from the (ex +1)
Simple Rule of thumb:
Advancing cam timing yields more mid-low range torque
Retarding came timing yields more top-end horsepower
also the picture is correct but you want to use the 2 degree key for the intake and the 1 degree key for exhaust
The change of minus two degrees intake and no change in the exhaust resulted in 17 ft lbs and 33 rwhp
(ex 0) (in -2)
biggest top end change was seen with minus two degrees intake and plus one degree exhaust. It resulted in an additional 19 ft lbs torque and 25 rwhp
(ex +1) (in -2)
please set it up the way sideways ran the test not
(ex +2) (in -1)
the huge increase came from the (in -2)
the reduced overlap comes from the (ex +1)
Simple Rule of thumb:
Advancing cam timing yields more mid-low range torque
Retarding came timing yields more top-end horsepower
also the picture is correct but you want to use the 2 degree key for the intake and the 1 degree key for exhaust
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From: South of the pier, Huntington Beach, CA
sidewaysThe change of minus two degrees intake and no change in the exhaust resulted in 17 ft lbs and 33 rwhp(ex 0) (in -2) biggest top end change was seen with minus two degrees intake and plus one degree exhaust. It resulted in an additional 19 ft lbs torque and 25 rwhp(ex +1) (in -2) please set it up the way sideways ran the test not(ex +2) (in -1) the huge increase came from the (in -2)the reduced overlap comes from the (ex +1)Simple Rule of thumb:Advancing cam timing yields more mid-low range torqueRetarding came timing yields more top-end horsepoweralso the picture is correct but you want to use the 2 degree key for the intake and the 1 degree key for exhaust
please set it up the way sideways ran the test not(ex +2) (in -1) the huge increase came from the (in -2)the reduced overlap comes from the (ex +1)Simple Rule of thumb:Advancing cam timing yields more mid-low range torqueRetarding came timing yields more top-end horsepoweralso the picture is correct but you want to use the 2 degree key for the intake and the 1 degree key for exhaustThe "rules of thumb" wash out with boost.
Sung, The degree number imprint is on the left to advance and on the right to retard.
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From: CA/WA
sideways
The change of minus two degrees intake and no change in the exhaust resulted in 17 ft lbs and 33 rwhp
(ex 0) (in -2)
biggest top end change was seen with minus two degrees intake and plus one degree exhaust. It resulted in an additional 19 ft lbs torque and 25 rwhp
(ex +1) (in -2)
please set it up the way sideways ran the test not
(ex +2) (in -1)
the huge increase came from the (in -2)
the reduced overlap comes from the (ex +1)
Simple Rule of thumb:
Advancing cam timing yields more mid-low range torque
Retarding came timing yields more top-end horsepower
also the picture is correct but you want to use the 2 degree key for the intake and the 1 degree key for exhaust
The change of minus two degrees intake and no change in the exhaust resulted in 17 ft lbs and 33 rwhp
(ex 0) (in -2)
biggest top end change was seen with minus two degrees intake and plus one degree exhaust. It resulted in an additional 19 ft lbs torque and 25 rwhp
(ex +1) (in -2)
please set it up the way sideways ran the test not
(ex +2) (in -1)
the huge increase came from the (in -2)
the reduced overlap comes from the (ex +1)
Simple Rule of thumb:
Advancing cam timing yields more mid-low range torque
Retarding came timing yields more top-end horsepower
also the picture is correct but you want to use the 2 degree key for the intake and the 1 degree key for exhaust
Sent 31 August 2011 - 09:13 AM
Sung,
Cam timing will add some torque (and thus power) for sure.
One degree retard on the intake and two degrees advance on the exhaust is what I suggest. You could also go two degrees retard on the intake and one degree advance on the exhaust.
Both settings use the same offset Woodruff keys and in my experience give the same results. The net result in using this combo is 3 cam (6 crank) degrees less overlap.
Retarding the intake allows the boost to build slightly prior to the valve opening. Advancing the exhaust makes the exhaust open sooner to help get the exhaust gases out initially.
- Sung
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From: CA/WA
Originally Posted by S2SEXY' timestamp='1324523246' post='21255320
sidewaysThe change of minus two degrees intake and no change in the exhaust resulted in 17 ft lbs and 33 rwhp(ex 0) (in -2) biggest top end change was seen with minus two degrees intake and plus one degree exhaust. It resulted in an additional 19 ft lbs torque and 25 rwhp(ex +1) (in -2) please set it up the way sideways ran the test not(ex +2) (in -1) the huge increase came from the (in -2)the reduced overlap comes from the (ex +1)Simple Rule of thumb:Advancing cam timing yields more mid-low range torqueRetarding came timing yields more top-end horsepoweralso the picture is correct but you want to use the 2 degree key for the intake and the 1 degree key for exhaust
please set it up the way sideways ran the test not(ex +2) (in -1) the huge increase came from the (in -2)the reduced overlap comes from the (ex +1)Simple Rule of thumb:Advancing cam timing yields more mid-low range torqueRetarding came timing yields more top-end horsepoweralso the picture is correct but you want to use the 2 degree key for the intake and the 1 degree key for exhaustThe "rules of thumb" wash out with boost.
Sung, The degree number imprint is on the left to advance and on the right to retard.
- Sung