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Degreeing a cam in.. #437221
08/13/09 09:18 PM 08/13/09 09:18 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline OP
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VernMotor  Offline OP
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Mt.Vernon ,Ohio
Ok let talk about this some..I wanted my cam in at 102. numbers are intake open at 32 deg and close at 56.5 . that is @ .050 after opening and .050 before closing. Now there are two-three ways to do this.. Not saying any one way is wrong. This is how I do it.. might be wrong ??

add 32+56.5 + 180 = 268.5 div by 2 =134.25 - 32 =102.25
show me your numbers and how you do it.
Re: Degreeing a cam in.. [Re: VernMotor] #437222
08/13/09 09:44 PM 08/13/09 09:44 PM
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem Offline
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I like duration at .050 /2 -32
268.5 /2 = 134.25 - 32 = 102.25

or your way.
I have a milidon gear drive and you set the cam @ .050 then turn crank to desired BTDC number then line the top gear up to inner hub there are seven bolt holes. then go through various methods of checking @ .050 .0200 .050 before and after max lift and so on!
I like where you are going to degree it help the big girl get moving!!!

Re: Degreeing a cam in.. [Re: Dodgem] #437223
08/13/09 09:49 PM 08/13/09 09:49 PM
Joined: Sep 2007
Posts: 2,584
sycamore,ohio
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BobsProFab Offline
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sycamore,ohio
i do it @ .050 before and after max lift
add then divid by 2

Bob
Re: Degreeing a cam in.. [Re: BobsProFab] #437224
08/13/09 09:50 PM 08/13/09 09:50 PM
Joined: Jan 2005
Posts: 1,163
Newark, OH
Hunted Duck Offline
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Newark, OH
Quote:

i do it @ .050 before and after max lift
add then divid by 2

Bob

This is how I do mine also.
Re: Degreeing a cam in.. [Re: BobsProFab] #437225
08/13/09 09:52 PM 08/13/09 09:52 PM
Joined: Feb 2009
Posts: 1,532
off the grid
340B5 Offline
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I do it the same, after setting 0 the same way on the crank degree wheel.

Yeah, it's got a smallblock.
Re: Degreeing a cam in.. [Re: BobsProFab] #437226
08/13/09 09:52 PM 08/13/09 09:52 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline OP
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VernMotor  Offline OP
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Mt.Vernon ,Ohio
Quote:

i do it @ .050 before and after max lift
add then divid by 2

Bob



I did that also..it come out the same way..
Re: Degreeing a cam in.. [Re: Dodgem] #437227
08/13/09 09:54 PM 08/13/09 09:54 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline OP
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VernMotor  Offline OP
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Mt.Vernon ,Ohio
Quote:

I like where you are going to degree it help the big girl get moving!!!



Yea I had it at 104.5 ..thought this might help
Re: Degreeing a cam in.. [Re: VernMotor] #437228
08/13/09 10:01 PM 08/13/09 10:01 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Romeo MI
Quote:

Ok let talk about this some..I wanted my cam in at 102. numbers are intake open at 32 deg and close at 56.5 . that is @ .050 after opening and .050 before closing. Now there are two-three ways to do this.. Not saying any one way is wrong. This is how I do it.. might be wrong ??

add 32+56.5 + 180 = 268.5 div by 2 =134.25 - 32 =102.25
show me your numbers and how you do it.



Jamie thats the same way I check the numbers but
when I install it I sorta cheat. I have a gear drive
so I would (in your case) set the crank to 102 and
have the #1 intake at the top with my indicator on
it and slide the idler gear on... then make the before
and after(.050) checks to see if its correct and
adjust if needed
Re: Degreeing a cam in.. [Re: Hunted Duck] #437229
08/13/09 10:05 PM 08/13/09 10:05 PM
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
WILD BILL Offline
Senior Member of the Junior Dragster Club
WILD BILL  Offline
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BROOK PARK, OH
Quote:

Quote:

i do it @ .050 before and after max lift
add then divid by 2

Bob

This is how I do mine also.




Make that three

Re: Degreeing a cam in.. [Re: WILD BILL] #437230
08/13/09 10:16 PM 08/13/09 10:16 PM
Joined: Aug 2003
Posts: 43,180
Bend,OR USA
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Cab_Burge Offline
I Win
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Bend,OR USA
I do it at .200 before max lift, .100 and .050 BML and then .050, .100 and .200 after max lift, add the two numbers up and divide by two. I do this at the retainer with the lash set, not on the lifter. Most motors(all of mine ) know what the valves are doing, they don't know or care what the lifters are doing If it is hydraulic cam and lifters I use a solid lifter and set the lash at zero

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Degreeing a cam in.. [Re: Cab_Burge] #437231
08/13/09 10:19 PM 08/13/09 10:19 PM
Joined: Oct 2004
Posts: 5,618
long island NY
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Ari440 Offline
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long island NY
can anyone post how to do it please

1.39 9.85 - 137 mph
Re: Degreeing a cam in.. [Re: Ari440] #437232
08/13/09 10:28 PM 08/13/09 10:28 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline OP
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VernMotor  Offline OP
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Mt.Vernon ,Ohio
Now I do it at the lifter..right or wrong/..I might recheck after I get the head on. now checking it at .050 before max and after. I got 60 deg and 35 deg. 60+35+180=275 div/2 = 137.5 - 35 =102.5 so very close. I will try tonys way tomorow. Only thing I do like about how I do it. is you only got to read .050. and 0 on the dail. where the max deal you reading odd number and adding .050 to odd numbers to read on the dail..
Re: Degreeing a cam in.. [Re: WILD BILL] #437233
08/13/09 10:32 PM 08/13/09 10:32 PM
Joined: Nov 2003
Posts: 7,348
Mt.Vernon ,Ohio
VernMotor Offline OP
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VernMotor  Offline OP
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Mt.Vernon ,Ohio
Quote:

Quote:

Quote:

i do it @ .050 before and after max lift
add then divid by 2

Bob

This is how I do mine also.




Make that three



One thing comes in to play here is how your degree wheel reads ..my is broke in to 90 deg segments...not all degree wheels are this way.
Re: Degreeing a cam in.. [Re: VernMotor] #437234
08/13/09 10:48 PM 08/13/09 10:48 PM
Joined: Aug 2003
Posts: 43,180
Bend,OR USA
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Cab_Burge Offline
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Bend,OR USA
Your doing it the way the cam companys want you to I don't like doing the lobe centers that way so I do it at the valve retainers, I also always check the exhaust after getting the intake lobe center where I want it. This makes sure the cam lobe centers are ground correctly on both lobes, the exhaust lobe center should be retarded the exact same amount the intake lobe is advanced. IE Lobe seperation angles are 108, you install the cam with four degrees advance on the intake lobe, which means the intake lobe is installed at 104 max lift after top dead center, the exahust lobe max lift should be exactly at 112 BTDC

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: Degreeing a cam in.. [Re: VernMotor] #437235
08/13/09 10:50 PM 08/13/09 10:50 PM
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
WILD BILL Offline
Senior Member of the Junior Dragster Club
WILD BILL  Offline
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Posts: 10,542
BROOK PARK, OH
Ari440

First you need to find true TDC. Use a stop and bring the piston up to it and record the reading (i.e. 10* to the right of 0). Now go backwards till the piston hits the stop. If the reading is the same (10* to the left of 0) you have TDC. If not adjust the pointer (or move the wheel) till the #'s are the same on either side of 0 TDC.

Now place your dial indicator on the intake liffter. Bring the lifter to max lift and zero the indicator. Now rotate untill you read .050 and record the #. Rotate back to 0 (max lift) and continue till you read .050 the other way. Record this #.

Add the 2 #'s togheter and divide by 2 and that is your intake CL.

Re: Degreeing a cam in.. [Re: WILD BILL] #437236
08/13/09 11:09 PM 08/13/09 11:09 PM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
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Romeo MI
Quote:

Quote:

Quote:

i do it @ .050 before and after max lift
add then divid by 2

Bob

This is how I do mine also.




Make that three



I do the install like you guys are saying with the
.050 before and after, add then /2
For what Cab is saying about checking at the valve,
I dont usually check it there.... I just advance the
cam basically to give more torque and compensate
for the valve train loss
Re: Degreeing a cam in.. [Re: WILD BILL] #437237
08/14/09 12:12 AM 08/14/09 12:12 AM
Joined: Oct 2004
Posts: 5,618
long island NY
A
Ari440 Offline
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long island NY
Quote:

Ari440

First you need to find true TDC. Use a stop and bring the piston up to it and record the reading (i.e. 10* to the right of 0). Now go backwards till the piston hits the stop. If the reading is the same (10* to the left of 0) you have TDC. If not adjust the pointer (or move the wheel) till the #'s are the same on either side of 0 TDC.

Now place your dial indicator on the intake liffter. Bring the lifter to max lift and zero the indicator. Now rotate untill you read .050 and record the #. Rotate back to 0 (max lift) and continue till you read .050 the other way. Record this #.

Add the 2 #'s togheter and divide by 2 and that is your intake CL.





THANK YOU VERY MUCH BILL

1.39 9.85 - 137 mph
Re: Degreeing a cam in.. [Re: Ari440] #437238
08/14/09 12:25 AM 08/14/09 12:25 AM
Joined: Dec 2005
Posts: 3,589
Topeka Kansas
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ksj Offline
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Topeka Kansas
Kato Engineering has your answer Jamie

Re: Degreeing a cam in.. [Re: ksj] #437239
08/14/09 05:57 AM 08/14/09 05:57 AM
Joined: Jan 2003
Posts: 5,989
Anoka County, MN
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Leigh Offline
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Anoka County, MN
Same way Vern, after checking top dead center. I check off the lobe, with a large Jomar wheel on a crank socket with a separate attachment. That way, I can turn the crank without disturbing the wheel.
Re: Degreeing a cam in.. [Re: Ari440] #437240
08/14/09 07:16 AM 08/14/09 07:16 AM
Joined: Dec 2007
Posts: 10,542
BROOK PARK, OH
WILD BILL Offline
Senior Member of the Junior Dragster Club
WILD BILL  Offline
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Posts: 10,542
BROOK PARK, OH
Quote:



THANK YOU VERY MUCH BILL







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