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04-15-2018, 10:05 AM
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#1
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Name: qmikep
Title: Rookie
Status: Not Here
Join Date: Apr 2018
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Posts: 4
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timing gear housing to block gasket sealant?
I'm changing my timing gear housing to block gasket because it leaks. I wanted to see if anyone has suggestions on whether or not to use sealant on the gasket.
The cummins b series manual doesn't mention anything about using a sealant. However I've talked to a few folks who said to use rtv on the gasket.
The gasket is genuine cummins and its a pinkish papery looking thing.
I wanted to get a general consensus whether or not to use a sealant/dressing on the gasket as I don't want to have to redo it as its a pita to get to.
Thanks
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04-15-2018, 10:15 AM
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#2
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Name: kole32
Title: Too Much Time
Status: Not Here
Join Date: Oct 2012
Location: Knox, IN
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Posts: 569
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I used no gasket and used “ The right stuff” no leaks.... also made 1157hp on the engine dyno with it.
Sent from my iPhone using Tapatalk
__________________
1993 w250, 215hp pump benched by Seth. 5ks. Hamilton valve springs, colt 181/218 cam, fire ringed head. Airdog 150 at 45psi torktek ofv 6x16 injectors, timing is roughly 30*. S366 soon to have a s475 with it.
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04-15-2018, 10:35 AM
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#3
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Name: 95cummins5.9
Title: Old man ***** gossiper
Status: Not Here
Join Date: Jun 2012
Location: U.S.A
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Posts: 4,720
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I use gray rtv or high tac. Makes it easier to place the housing in without the gasket slipping off. Definitely gray rtv where it meets the oil pan.
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04-15-2018, 12:11 PM
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#4
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
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Posts: 4,412
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I 2nd gray rtv, I use that on most everything where applicable.
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04-15-2018, 02:26 PM
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#5
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Name: xDiesel03
Title: Diesel Enthusiast
Status: Not Here
Join Date: Oct 2013
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Posts: 225
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I would use no gasket and put Loctite 5699 on there. It costs more than the permatex branded RTV, but it’s what Cummins uses so I’m sure it’s for a reason.
__________________
2003 2500 QCSB 4x4 3.73 - Firepunk HPT Tuned, BBI Stage 2's, DAP 63/68/12, Hamilton [624/1050 and 680/1206 with Water/Meth]
2012 2500 CCSB 4x4 3.73 Firepunk EFI and Comp3, D&J Built 6.7L, S&S 200%, ATS Dual CP3 w/ Exergy 12mm, S366/S483 Compounds [1086/2289]
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04-15-2018, 03:34 PM
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#6
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Name: biggy238
Title: Too Much Time
Status: Not Here
Join Date: Aug 2008
Location: Just North of Wrong
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Posts: 10,865
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How long has cummins been doing this? We are resealing aluminum housings on three trucks right now that had rtv instead of gaskets. Each have about 8k hrs of run time.
Just curious.
Sent from my XT1575 using Tapatalk
__________________
Check out @bdmaximusworx
05.5 Campanella White TDi Jetta 5spd 45.5MPG
-Little Sexy
'10 Silver F250 CCLB 4X4 6.4L cummins Swapped
Insta @trash.panda250
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04-15-2018, 03:47 PM
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#7
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
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Posts: 4,412
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Quote:
Originally Posted by biggy238
How long has cummins been doing this? We are resealing aluminum housings on three trucks right now that had rtv instead of gaskets. Each have about 8k hrs of run time.
Just curious.
Sent from my XT1575 using Tapatalk
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I prefer to use pure manatee blood, but that chits getting hard to find.
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04-15-2018, 10:28 PM
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#8
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Name: junkyard dog
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2012
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Posts: 85
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not to side track,but would not using a gasket tighten up the mesh between the pump gear and cam gear? I am starting a rebuild soon and having been thinking about this also. Does the cam retainer allow enough thrust to not worry about this?
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04-16-2018, 06:31 AM
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#9
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Name: biggy238
Title: Too Much Time
Status: Not Here
Join Date: Aug 2008
Location: Just North of Wrong
Member`s Gallery
Posts: 10,865
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Quote:
Originally Posted by jasonc
I prefer to use pure manatee blood, but that chits getting hard to find.
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Interesting. Think I can find some at my local ethnic food market?
Sent from my XT1575 using Tapatalk
__________________
Check out @bdmaximusworx
05.5 Campanella White TDi Jetta 5spd 45.5MPG
-Little Sexy
'10 Silver F250 CCLB 4X4 6.4L cummins Swapped
Insta @trash.panda250
Last edited by biggy238; 04-16-2018 at 06:32 AM.
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04-16-2018, 07:34 AM
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#10
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Name: jasonc
Title: Too Much Time
Status: Not Here
Join Date: Nov 2009
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Posts: 4,412
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As long as they cater to redneck. There's a bunch of them swimming cows in my backyard getting in the way of things.
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04-16-2018, 11:13 AM
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#11
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Name: qmikep
Title: Rookie
Status: Not Here
Join Date: Apr 2018
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Posts: 4
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Ok so i may split the difference. Anyone had bad luck with a gasket + high tack?
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04-16-2018, 12:01 PM
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#12
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Name: Nor'Easter
Title: Too Much Time
Status: Not Here
Join Date: Nov 2012
Location: Maine
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Posts: 947
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Quote:
Originally Posted by junkyard dog
not to side track,but would not using a gasket tighten up the mesh between the pump gear and cam gear? I am starting a rebuild soon and having been thinking about this also. Does the cam retainer allow enough thrust to not worry about this?
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Mesh is based on radial spacing. Gasket v. no gasket would change face alignment (like how a walking cam gear changes face alignment).
__________________
Mike
Stacked silencer rings.
1957 Cummins Power Wagon
2014 Regular Cab G56
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04-16-2018, 03:04 PM
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#13
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Name: Destroked 450
Title: Too Much Time
Status: Not Here
Join Date: Mar 2015
Location: Harned,Ky.
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Posts: 340
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I used gray rtv on one side of the gasket and blue lock tite on all on the bolts.
I've heard a lot of new oem stuff uses The Right Stuff and no gasket
__________________
Mine: 04 F-450 sc 4x4 fb drw 5.9 12v 215 ppump, zf6, kdp fixed, 3k gsk, AFC Live, super b single, pusher intake, d-celerator ebrake
Hers:2018 F-150 sc 4x4 5.0
Farm trucks: 01 Z71 ext cab, 95 S10, 93 F-800 8.3 Cummins, 87 AM General 5 ton
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04-16-2018, 11:03 PM
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#14
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Name: junkyard dog
Title: Green Behind the Ears
Status: Not Here
Join Date: Oct 2012
Member`s Gallery
Posts: 85
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mesh
Quote:
Originally Posted by Nor'Easter
Mesh is based on radial spacing. Gasket v. no gasket would change face alignment (like how a walking cam gear changes face alignment).
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understand, guess I was getting a little ahead of myself thinking about the helical cut gears. What you are saying makes sense.
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04-18-2018, 09:59 AM
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#15
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Name: biggy238
Title: Too Much Time
Status: Not Here
Join Date: Aug 2008
Location: Just North of Wrong
Member`s Gallery
Posts: 10,865
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So, the OEM I mentioned using Grey rtv has changed their specification to loctite 515 to assemble the aluminum accessory drive to gear case joint.
Sent from my XT1575 using Tapatalk
__________________
Check out @bdmaximusworx
05.5 Campanella White TDi Jetta 5spd 45.5MPG
-Little Sexy
'10 Silver F250 CCLB 4X4 6.4L cummins Swapped
Insta @trash.panda250
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04-27-2018, 11:55 AM
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#16
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Name: qmikep
Title: Rookie
Status: Not Here
Join Date: Apr 2018
Member`s Gallery
Posts: 4
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well I used the loctite 5699 and a gasket, hopefully it holds.
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