Author Topic: Chain guide replacement part numbers. Am I missing anything?  (Read 4018 times)

VegasKyle

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Chain guide replacement part numbers. Am I missing anything?
« on: October 16, 2010, 06:29:35 PM »


I'm going to replace all 4 guides. #20, 6, 14, 7 as well as #11 the tensioner #17, 18 and 19.  I'm also going to replace the bolt #12 and washer #13.  Should I replace any of the other bolts? #15 and 16? How about 8,9,10?  My cam gears #4 are in great shape so they are going to stay along with the crank gear #2 and I figured I'd keep the chain #1 because from what I understand the gears and chain should be allowed to wear together.

I'm also going to replace all the gaskets. Upper and Lower front chain case cover 11-14-1-721-802 and 11-14-1-721-802.  Thermostat housing #11-53-1-721-172.  Front crankshaft seal 11-14-1-439-570.  Top of lower chain case gaskets #11-14-1-247-837 and 11-14-1-247-849.  Lastly the Valve cover and spark plug gaskets #11-12-1-721-876, 11-12-1-721-475 and 11-12-1-721-476 (x3).

Is there anything else I'm missing? Anything else I should do while I have it all apart?  

The PO said the thermostat and water pump were recently replaced.  I may do the thermostat because its cheep and I'll have to take it out anyway.

DesktopDave

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Chain guide replacement part numbers. Am I missing anything?
« Reply #1 on: October 16, 2010, 06:48:50 PM »
I'd be tempted to add the rear timing case gasket.  I'd also see if there is a spec anywhere for timing chain maximum permissible length (stretch).

You might want to put in a different temp thermostat while you're at it.  OEM is 88degF IIRC.  Do a cooler one for better performance or a hotter one for better mileage & longer engine life.
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KenC

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Chain guide replacement part numbers. Am I missing anything?
« Reply #2 on: October 17, 2010, 10:34:02 AM »
Don't replace the case/block gasket unless you have to. Do you k ownif your profile gasket was ever changed? It was recalled a long time ago.

monko141

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Chain guide replacement part numbers. Am I missing anything?
« Reply #3 on: October 17, 2010, 11:27:40 AM »
Main things missing are the crankshaft bolt and a chain.
You don't need 16 and 19.
You probably don't need 12,13 and 15
9 and 10 have to be upgraded to the new longer bolt.

You don't need the inner case profile gasket.
Just buy a valve cover gasket kit that includes the rubber seals for the bolts.

VegasKyle

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Chain guide replacement part numbers. Am I missing anything?
« Reply #4 on: October 17, 2010, 12:00:18 PM »
Quote from: KenCopperwheat;97584
Don't replace the case/block gasket unless you have to. Do you k ownif your profile gasket was ever changed? It was recalled a long time ago.


Yes BMW of seattle did it at 60,000mi for over $1500.

VegasKyle

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Chain guide replacement part numbers. Am I missing anything?
« Reply #5 on: October 17, 2010, 12:09:35 PM »
Quote from: monko141;97585
Main things missing are the crankshaft bolt and a chain.
You don't need 16 and 19.
You probably don't need 12,13 and 15
9 and 10 have to be upgraded to the new longer bolt.

You don't need the inner case profile gasket.
Just buy a valve cover gasket kit that includes the rubber seals for the bolts.


I wasn't going to do the chain because I'm not replacing the cam gears or crank gear.  I always thought the chain and gears should be replaced as a unit.   I'll add 9 and 10 to the list.  19 is out too, I thought it was part of the tensioner at first.

What bolts are you taking about with the valve cove gasket?  The one from Pelican comes with the parts I have listed.

monko141

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Chain guide replacement part numbers. Am I missing anything?
« Reply #6 on: October 17, 2010, 12:40:15 PM »
If you don't do the chain you will have what RED IS 91 had in the bottom of his pan.  
Looks like pelican's kit doesn't have the rubber seals (Part #11-12-1-721-879) in it's kit.

carlos318is

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Chain guide replacement part numbers. Am I missing anything?
« Reply #7 on: October 17, 2010, 01:07:35 PM »
Quote from: DesktopDave;97561
I'd be tempted to add the rear timing case gasket.  I'd also see if there is a spec anywhere for timing chain maximum permissible length (stretch).

You might want to put in a different temp thermostat while you're at it.  OEM is 88degF IIRC.  Do a cooler one for better performance or a hotter one for better mileage & longer engine life.


Well I didn't know about that with the thermostat

How much difference will a cooler one make
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DesktopDave

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Chain guide replacement part numbers. Am I missing anything?
« Reply #8 on: October 17, 2010, 01:10:50 PM »
Quote from: carlos318is;97591
Well I didn't know about that with the thermostat

How much difference will a cooler one make

A little.  I haven't run one for long enough to give a qualitative answer.  I'm just going on conventional wisdom.  With 277k miles IDK if it'll run long enough either...
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VegasKyle

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Chain guide replacement part numbers. Am I missing anything?
« Reply #9 on: October 21, 2010, 09:58:49 PM »
Quote from: carlos318is;97591
Well I didn't know about that with the thermostat

How much difference will a cooler one make


A little off topic but what wheels are those in your sig Carlos?