Correct procedure for 440 timing.
#1839166
06/01/15 08:47 PM
06/01/15 08:47 PM
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Joined: Jan 2003
Posts: 580 Shelby, Ohio
JeffL
OP
mopar
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OP
mopar
Joined: Jan 2003
Posts: 580
Shelby, Ohio
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My timing cover has 3 marks. 10 before, zero(actually a hole), and 10 after. My harmonic balancer has a lot of marks on it, starting at 10 after and ending at 50 before. It is a fluidampr.
With engine warm, idling, and vacuum advance unplugged. Should initial be set to 12-14 before on fluidampr aligned with the zero on the timing cover?
Then do I need to rev up to 3000rpm with vac unplugged and get as close to 35 before on the fluidampr?
When all that is done, with vacuum plugged back in, I am getting like 48 or 50 before at 3000rpm
Is this ok? It seems to run great, starts up with a little hesitation when at normal operating temp.
My engine is a fresh 440, eddy head, Mr Sixpack cam, eddy rpm intake, street demon carb, schumacher header.
I looked through the forums and google. I found a bunch if different answers.
Thanks a lot!
Last edited by JeffL; 06/01/15 10:05 PM.
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Re: Correct procedure for 440 timing.
[Re: JeffL]
#1839208
06/01/15 09:36 PM
06/01/15 09:36 PM
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Joined: Jan 2005
Posts: 4,243 Charlotte, North Carolina
sgcuda
master
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master
Joined: Jan 2005
Posts: 4,243
Charlotte, North Carolina
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Sounds good enough. If by hesitation during start up, you mean the timing advance is kicking the starter back, you may have to lower your initial advance. Depends on cam, compression, starter and battery quality. A start retard might help also. BTW, did you verify TDC beforehand?
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Re: Correct procedure for 440 timing.
[Re: JeffL]
#1839624
06/02/15 12:09 PM
06/02/15 12:09 PM
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Joined: Jan 2003
Posts: 75,094 A Banana Republic near you.
JohnRR
I Win
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I Win
Joined: Jan 2003
Posts: 75,094
A Banana Republic near you.
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My timing cover has 3 marks. 10 before, zero(actually a hole), and 10 after. My harmonic balancer has a lot of marks on it, starting at 10 after and ending at 50 before. It is a fluidampr.
With engine warm, idling, and vacuum advance unplugged. Should initial be set to 12-14 before on fluidampr aligned with the zero on the timing cover?
Then do I need to rev up to 3000rpm with vac unplugged and get as close to 35 before on the fluidampr?
When all that is done, with vacuum plugged back in, I am getting like 48 or 50 before at 3000rpm
Is this ok? It seems to run great, starts up with a little hesitation when at normal operating temp.
My engine is a fresh 440, eddy head, Mr Sixpack cam, eddy rpm intake, street demon carb, schumacher header.
I looked through the forums and google. I found a bunch if different answers.
Thanks a lot! What distributor are you using? If it is MP is it the one with the adjustable mechanical advance? Also you should run the RPM up higher than 3000 to make sure it's not advancing more.
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Re: Correct procedure for 440 timing.
[Re: JeffL]
#1840479
06/03/15 02:10 PM
06/03/15 02:10 PM
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Joined: Jan 2006
Posts: 360 Ohio
shorthorse
enthusiast
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enthusiast
Joined: Jan 2006
Posts: 360
Ohio
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Yes i believe it's kicking the starter back only when engine is warm. Starts fine when cold. Piston 1 was at TDC when 0 on balancer was aligned with 0 on timing cover. Is that what you mean by verifying tdc? Thanks! Verify TDC - Your Fluidampr is probably pretty accurate but if you want to find true TDC, get one of these.
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