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Pontiac 400 engine
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CarGuru > Open discussion > Pontiac 400 engine 23 April 2005 20:36:03
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Pontiac 400 engine

David Toft 3 April 2005 21:23:28
 Can anyone tell me what torque is necessary to turn the engine over with
the spark plugs out, please.
--
David Toft
Add comment
Fbr 3 April 2005 23:54:41 [ permanent link ]
 David Toft wrote:> Can anyone tell me what torque is necessary to turn the engine over> with the spark plugs out, please.

With the plugs out it shouldn't take hardly any effort to turn the engine
over. I'm assuming you're using a large ratchet and socket on the balancer
bolt. If this is an older engine or one that's been setting for a while
load the cylinders up with WD40, let it sit overnight, then try it. That
will hopefully break the rings free of the cylinder walls and prevent any
scoring when you first move the pistons.


Add comment
David Toft 4 April 2005 01:37:58 [ permanent link ]
 In article <5SX3e.2576$215.988­@tornado.rdc-kc.rr.c­om>, FBR
<firebirdracing@NOS­PAMyahoo.com> writes>David Toft wrote:>> Can anyone tell me what torque is necessary to turn the engine over>> with the spark plugs out, please.>
With the plugs out it shouldn't take hardly any effort to turn the engine>over. I'm assuming you're using a large ratchet and socket on the balancer>bolt. If this is an older engine or one that's been setting for a while>load the cylinders up with WD40, let it sit overnight, then try it. That>will hopefully break the rings free of the cylinder walls and prevent any>scoring when you first move the pistons.>
This is an engine which runs. It starts OK cold but the starter will not
crank it when it has been warmed up, the current it is pulling makes
smoke come out of the starter motor. I took the plugs out and put a
socket and torque wrench on the balancer bolt, it took 50 lb-ft which I
thought was excessive.
--
David Toft
Add comment
Starhop1 4 April 2005 05:36:54 [ permanent link ]
 I had the same problem on my 455 and found out I had not spaced the
starter correctly. There are shims available to space the starter from
the block otherwise the gears will bind into themselves and cause the
over current situation. Good luck.


On Sun, 3 Apr 2005 22:37:58 +0100, David Toft
<david@burgoyne.dem­on.co.uk> wrote:
In article <5SX3e.2576$215.988­@tornado.rdc-kc.rr.c­om>, FBR ><firebirdracing@NO­SPAMyahoo.com> writes>>David Toft wrote:>>> Can anyone tell me what torque is necessary to turn the engine over>>> with the spark plugs out, please.>>
With the plugs out it shouldn't take hardly any effort to turn the engine>>over. I'm assuming you're using a large ratchet and socket on the balancer>>bolt. If this is an older engine or one that's been setting for a while>>load the cylinders up with WD40, let it sit overnight, then try it. That>>will hopefully break the rings free of the cylinder walls and prevent any>>scoring when you first move the pistons.>>
This is an engine which runs. It starts OK cold but the starter will not >crank it when it has been warmed up, the current it is pulling makes >smoke come out of the starter motor. I took the plugs out and put a >socket and torque wrench on the balancer bolt, it took 50 lb-ft which I >thought was excessive.

Add comment
Brxsep 8 April 2005 01:12:25 [ permanent link ]
 With the pugs out and the trans in nutural, you can spin it by hand by
pulling the belts, depending on how may pullies area attached. Had a
79 with the 301 and just the power steering pump and alt. No trouble
turinging it.

Add comment
Guest 23 April 2005 20:36:03 [ permanent link ]
 Sorry for the late response but this sounds more like a timing issue.
Advanced timing causes hard starting when warm. This might solve your
problem.

Thanks

Collector Car Central LLC
www.collectorcarcen­tral.com
From Project to Perfect, Classic Cars for everyone.


"David Toft" <david@burgoyne.dem­on.co.uk> wrote in message
news:L2uNnaB2IGUCFw­xz@burgoyne.demon.co­.uk...> In article <5SX3e.2576$215.988­@tornado.rdc-kc.rr.c­om>, FBR > <firebirdracing@NOS­PAMyahoo.com> writes>>David Toft wrote:>>> Can anyone tell me what torque is necessary to turn the engine over>>> with the spark plugs out, please.>>
With the plugs out it shouldn't take hardly any effort to turn the engine>>over. I'm assuming you're using a large ratchet and socket on the >>balancer>>bolt. If this is an older engine or one that's been setting for a while>>load the cylinders up with WD40, let it sit overnight, then try it. That>>will hopefully break the rings free of the cylinder walls and prevent any>>scoring when you first move the pistons.>>
This is an engine which runs. It starts OK cold but the starter will not > crank it when it has been warmed up, the current it is pulling makes smoke > come out of the starter motor. I took the plugs out and put a socket and > torque wrench on the balancer bolt, it took 50 lb-ft which I thought was > excessive.> -- > David Toft


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CarGuru > Open discussion > Pontiac 400 engine 23 April 2005 20:36:03
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