Re: Motor won't rev over 4,000 rpm. Valve springs?
[Re: 70Cuda383]
#1343242
11/30/12 04:24 PM
11/30/12 04:24 PM
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Joined: Jan 2003
Posts: 27,485 So Cal
autoxcuda
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,485
So Cal
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Quote:
if this is a problem that just started out of nowhere, and it was previously running fine, then I'd look at valve springs.
however, I had a mishap once... mis-read the timing marks on the gears when I installed them. cam ended up about 30 degrees advanced. engine fired right up and ran great. but it would NOT rev over 3,000 rpm.
so don't be afraid to check cam timing either if you find that it's not in your ignition anywhere, and the valve springs are ok. although it's unlikely, I suppose it could be possible somehow if the chain is old and very slack, to have jumped a tooth or 2...but if it was that loose, I would also think that your timing would be eratic as the slop in the chain allowed the cam to lag behind, then get yanked forward, then lag behind...giving you a tick-tock back and forth on your spark timing.
I saw that in a Mopar that someone took to shop about 6 monthes ago. Aligned the marks and all was good.
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Entire Thread
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Motor won't rev over 4,000 rpm. Valve springs?
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MrBelvedere2
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11/30/12 04:04 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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bonefish
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11/30/12 04:21 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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440PURSUIT
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11/30/12 04:26 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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67Satty
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11/30/12 04:30 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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6PakBee
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11/30/12 04:35 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Dunnuck Racing
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11/30/12 05:19 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Exit1965
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11/30/12 05:31 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Kern Dog
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11/30/12 05:56 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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RapidRobert
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11/30/12 06:02 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Kern Dog
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11/30/12 06:07 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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MrBelvedere2
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11/30/12 06:57 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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That AMC Guy
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11/30/12 08:06 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Cab_Burge
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11/30/12 04:27 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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68KillerBee
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11/30/12 11:25 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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cjs69mope
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11/30/12 03:19 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Firepowerflyer
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11/30/12 04:12 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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70Cuda383
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11/30/12 04:41 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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autoxcuda
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11/30/12 08:24 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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sixpack4spd
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11/30/12 09:37 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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52savoy
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12/01/12 01:59 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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IMGTX
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12/01/12 03:47 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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52savoy
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12/01/12 09:24 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Dodgem
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11/30/12 07:36 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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DusterMan
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12/01/12 04:48 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Dodgem
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12/01/12 07:30 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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jbc426
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12/01/12 07:39 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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HYPER8oSoNic
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12/01/12 11:38 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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p d'ro
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12/02/12 02:44 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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bogusracer
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12/02/12 07:04 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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stumpy
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12/02/12 08:15 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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MrBelvedere2
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12/05/12 06:23 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Kern Dog
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12/05/12 06:58 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Mr. T
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12/05/12 08:07 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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autoxcuda
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12/05/12 08:48 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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autoxcuda
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12/05/12 08:53 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Dodgem
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12/05/12 02:49 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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MrBelvedere2
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12/07/12 02:48 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Kern Dog
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12/07/12 02:52 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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Dodgem
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12/07/12 03:00 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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cudaboy
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12/07/12 10:28 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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fastnos
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12/23/12 04:09 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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BigBlockMopar
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12/23/12 04:28 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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MrBelvedere2
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01/20/13 03:01 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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RapidRobert
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01/20/13 03:37 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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buildanother
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01/20/13 04:55 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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MoparforLife
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01/20/13 11:05 AM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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drew72
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01/20/13 07:22 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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MrBelvedere2
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01/22/13 07:24 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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MoparforLife
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01/22/13 07:37 PM
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Re: Motor won't rev over 4,000 rpm. Valve springs?
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70Cuda383
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01/20/13 06:12 PM
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