Home » Public Forums » GMCnet » [GMCnet] Changing the timing chain without pulling the motor.
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| Re: [GMCnet] Changing the timing chain without pulling the motor. [message #218495 is a reply to message #218465] |
Thu, 15 August 2013 20:12   |
Carl S.
Messages: 4186
Registered: January 2009
Location: Tucson, AZ.
Karma: 13
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Senior Member |
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Patrick,
I actually did it wrong!  I jacked the engine up with a block of 2 X 4 under the oil pan. It DID put a permanent dent in it, but somehow does NOT rub on the crankshaft (phew!). If I were to do it over again, I would rig up a support above the engine by bolting a chain to the front intake manifold manifold bolts and suspending the engine from the chain with a come along or something like that.
I would guess jacking the engine up by the final drive would work too. You just need to take the weight off the mount.
Carl Stouffer
'75 ex Palm Beach
Tucson, AZ.
Chuck Aulgur Reaction Arm Disc Brakes, Quadrabags, 3.70 LSD final drive, Lenzi knuckles/hubs, Dodge Truck 16" X 8" front wheels, Rear American Eagles, Solar battery charging. GMCSJ and GMCMI member
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| Re: [GMCnet] Changing the timing chain without pulling the motor. [message #218496 is a reply to message #218465] |
Thu, 15 August 2013 20:18 |
chasingsummer
Messages: 434
Registered: May 2011
Location: asheboro, nc
Karma: 0
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Senior Member |
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When I did mine I used two jack stands on the inside, one on each side of engine cover. I raised them and secured them . I put a metal pipe across them. them i used 2 heavy straps with the rachets, one one each side. for the life of me I can not remember how i attached straps, i am thinking i rapped each one around head, but brain fart.
I would ratchet each side equally once motor mount bolts were off.
I do remember me taking a 4 to 6 hour job and making it a all weekend thing. But I do know it was done correctly and with good parts. I removed a chain that looked fairly new, but single not double.
I was surprised to find that based on timing light that timing was in spec once it was back together.
brian
asheboro, nc
75 eleganza, 74 build
119k miles and counting,
DOG HOUSE
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| Re: [GMCnet] Changing the timing chain without pulling the motor. [message #218633 is a reply to message #218538] |
Fri, 16 August 2013 14:53 |
powwerjon
Messages: 849
Registered: March 2013
Karma: -2
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Senior Member |
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This is the jig that you need to make up to support the engine when lifting the motor. Used hardwood lumber, this fits on either side of the pan.
http://www.gmcmhphotos.com/photos/general-pictures/p44885-engine-jacking-jig-for.html
http://www.gmcmhphotos.com/photos/general-pictures/p44884-engine-jacking-jig-for-lifting-motor.html
http://www.gmcmhphotos.com/photos/general-pictures/p44883-engine-jacking-jig-for-lifting-motor.html
http://www.gmcmhphotos.com/photos/general-pictures/p44882-engine-jacking-jig-for-lifting-motor.html
Been used on several motors to support the motor. You should not lift your engine by jacking on the bottom of the oil pan as you can and some have done, cause the crank to hit the pan.
J.R. Wright
30' Buskirk Stretch
Michigan
On Location at Turkeyville GMCGL Rally
On Aug 16, 2013, at 4:24 AM, Patrick Fitzmorris <fitzmorrispr@gmail.com> wrote:
> Well!
> Paul, that looks like an idea worth stealing! Hopefully with enough
> planning, and a few more ideas like that, I can avoid the situation Brian
> described. I want to expedite, though of course without sacrificing
> quality...
>
>
> Did mine last year. Jacked it up by the front drive just enough to get the
> front mount off then set it down on wood blocks while I worked on it.
>
> http://www.gmcmhphotos.com/photos/miscellaneous-fixes-upgrades-amp-other-stuff/p50459-timing-chain-replaceme.html
> --
> Paul W L
> 76 Palm Beach
> Cleveland,OH
>
> & Current Pull A Part VIP Member
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| Re: [GMCnet] Changing the timing chain without pulling the motor. [message #219505 is a reply to message #218633] |
Wed, 21 August 2013 21:11 |
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fitzmorrispr
Messages: 137
Registered: February 2013
Location: Los Angeles
Karma: 0
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Senior Member |
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So, resurrecting this thread, since I am getting ready to do te deed.
I'm wondering where I can source the oil slinger, and what sorts of gotchas
there are when sourcing the more standard parts from the local parts store.
Any tips you got would be great...
On Aug 16, 2013 12:54 PM, "John Wright" <powwerjon@gmail.com> wrote:
> This is the jig that you need to make up to support the engine when
> lifting the motor. Used hardwood lumber, this fits on either side of the
> pan.
>
>
> http://www.gmcmhphotos.com/photos/general-pictures/p44885-engine-jacking-jig-for.html
>
> http://www.gmcmhphotos.com/photos/general-pictures/p44884-engine-jacking-jig-for-lifting-motor.html
>
> http://www.gmcmhphotos.com/photos/general-pictures/p44883-engine-jacking-jig-for-lifting-motor.html
>
> http://www.gmcmhphotos.com/photos/general-pictures/p44882-engine-jacking-jig-for-lifting-motor.html
>
> Been used on several motors to support the motor. You should not lift
> your engine by jacking on the bottom of the oil pan as you can and some
> have done, cause the crank to hit the pan.
>
> J.R. Wright
> 30' Buskirk Stretch
> Michigan
> On Location at Turkeyville GMCGL Rally
>
> On Aug 16, 2013, at 4:24 AM, Patrick Fitzmorris <fitzmorrispr@gmail.com>
> wrote:
>
> > Well!
> > Paul, that looks like an idea worth stealing! Hopefully with enough
> > planning, and a few more ideas like that, I can avoid the situation Brian
> > described. I want to expedite, though of course without sacrificing
> > quality...
> >
> >
> > Did mine last year. Jacked it up by the front drive just enough to get
> the
> > front mount off then set it down on wood blocks while I worked on it.
> >
> >
> http://www.gmcmhphotos.com/photos/miscellaneous-fixes-upgrades-amp-other-stuff/p50459-timing-chain-replaceme.html
> > --
> > Paul W L
> > 76 Palm Beach
> > Cleveland,OH
> >
> > & Current Pull A Part VIP Member
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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The Greatfruit: 1973, 26', Canyon Lands or Painted Desert, in Pineapple Yellow
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