Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 07-14-2020, 10:27 PM
Join Date: May 2010
Posts: 1,324
W124 3.2 upper timing sealant

I did the head gasket last year on my wifeís 95 e320 and it was drip free till lady week. Leaking out of the usual spot by the tensioner. Whatís the best sealant for that machined parts? I canít seem to get it done right. Iím putting together an order to take it all apart again.

Reply With Quote
Old 07-14-2020, 10:45 PM
Registered User
Join Date: Sep 2001
Posts: 1,705
I did this on a 103, not a 104..
Use MBZ seals, make the surfaces spotless, put Permatex Right Stuff sparingly and only in the corners and then oiled the bottom of the new seal so it would slide in place. I've thought about running a bead all the way around the bottom of the cover after install but wouldn't have been happy with it.

I've had success with many sealants by letting them dry for a day or two when possible before starting the engine. This allows the sealant to cure before being exposed to oil and thermal cycles.

Miss my 3.2, what an engine. Head gasket went at 360k miles. Compression was still perfect.

Good luck!!!
Does a Caddy stretch? No, but a Mercedes bendz.
Reply With Quote
Old 07-14-2020, 11:10 PM
Join Date: May 2010
Posts: 1,324
I also the the head gasket on my 94 and it hasn’t been any issues so there’s hope. I did a Very thin Layer on both sides, let it setup then put it all together. Seemed to work. I used Permatex gray sealer. Is there a better sealer out there?

I also need to break the chain and recheck the timing. I keep getting a cam sensor code and the power band seems off. I think maybe I’m off a tooth or didn’t set the intake cam adjuster probably.
Reply With Quote
Old 07-16-2020, 06:26 AM
Registered User
Join Date: Aug 2002
Location: Southeastern PA
Posts: 3,077
speednjay, buy the black sealant from a MB dealer. It comes in a tube that works like a caulk gun Ö quite expensive, but is effective and worth the extra cost.
Fred Hoelzle
Reply With Quote
Old 07-16-2020, 12:01 PM
I told you so!
Join Date: Jun 2002
Location: Motor City, MI
Posts: 2,848
I did mine at least 10 years ago and it still holds tight. My notes show a number of sealants that would work.

Loctite 5090 (002 989 73 20 10) recommended in manual
surfaces (002 989 47 20 10) recommended by steve brotherton
corners (001 989 61 20 10) recommended by steve brotherton

I believe I just used Loctite 5090, bought from Pelican Parts
95 E320 Cabriolet, 159K
Reply With Quote
Old 07-16-2020, 12:33 PM
Registered User
Join Date: Nov 2010
Location: TX
Posts: 3,849
you can use even better sealants

toyota FIPG black (threebond 1207B) or GM gray sealant (1207G) - once you assemble an engine with either, forget any leaks. For finely micromachined surface calling for anaerobic sealant - dont use silicone type sealer, use a designated anaerobic one like original hylomar or one of the red gels (make sure its compatible with the metal you are working with)
2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)
Reply With Quote
Old 07-19-2020, 05:21 PM
Join Date: May 2010
Posts: 1,324
Got everything ordered. Hopefully the weather will cool down for a few days so I can knock this out
Reply With Quote
Old 07-20-2020, 09:35 PM
turbobenz's Avatar
Registered User
Join Date: Nov 2007
Location: Cameron Park CA
Posts: 1,871
Ive had trouble with the upper cover of my m104. The eyebrow seal is difficult to compress while fitting the timing cover onto the dowels, leading to a bulging eyebrow seal and minor leaks. Dawned on me one day that I had the head surfaced when i did the valve job and neglected to have the upper timing cover shaved a bit as well. So, if your having trouble with your eyebrow and you milled the head....

1981 300SD 512k OM603

Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 04:29 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page