Re-attaching Exhaust Manifold

sneuman · 30-06-2009, 06:52

I removed my exhaust manifold (55hp diesel) the other day to track down a problem and now will replace it. Is there any goop, grease or other lubricant that I should put on the gasket before putting back on?

fareweather · 30-06-2009, 07:15

No, just a new gasket if the old one is totally compressed, might still seal well but new ones aren't that expensive. Your EGTs will burn off anything you put on there.

sneuman · 30-06-2009, 07:27

parts are really hard to come by and the gasket seems in good shape, so I hope I can reuse it.

fareweather · 30-06-2009, 07:30

You'll probably be ok with it, I have reused many and only occasionally have a minor leak.

sildene · 30-06-2009, 20:03

I used CRC Maniseal Exhaust Cement to enhance the gasket. I bought it in Australia but believe a similar product will be available globally. It is commonly used in car engines, and is designed to take exhaust temperatures.

Martin

sneuman · 01-07-2009, 05:11

Thanks all. Any tips on whether/how I should try to clean the carbon deposits?

fareweather · 01-07-2009, 06:39

If it is thick caked on stuff use a screwdriver to scrape it off, lighter deposits can be removed with any number of solvents, lacquer thinner, brake cleaner etc. Use the solvent for the mating surfaces.

Just yesterday I ordered this material to make a custom gasket for a new turbo setup that I couldn't find the proper gaskets for. Don't know how it will work yet but it is cheap and has good reviews.

Amazon.com: Mr. Gasket 5961 Ultra Seal Exhaust Gasket Material: Automotive

30-06-2009, 06:52	#1
sneuman Senior Cruiser Join Date: Aug 2005 Location: Magothy Marina, Severna Park, MD Boat: Tayana 37 Cutter - "Symbiosis" Posts: 1,371 Images: 37	Re-attaching Exhaust Manifold I removed my exhaust manifold (55hp diesel) the other day to track down a problem and now will replace it. Is there any goop, grease or other lubricant that I should put on the gasket before putting back on? __________________ Sailing Maryland Blog: http://sailingmaryland.blogspot.com/

30-06-2009, 07:15	#2
fareweather Registered User Join Date: Jan 2008 Location: Colorado Boat: Manta 40 Posts: 98	No, just a new gasket if the old one is totally compressed, might still seal well but new ones aren't that expensive. Your EGTs will burn off anything you put on there. __________________ Moderators are cool.

30-06-2009, 07:27	#3
sneuman Senior Cruiser Join Date: Aug 2005 Location: Magothy Marina, Severna Park, MD Boat: Tayana 37 Cutter - "Symbiosis" Posts: 1,371 Images: 37	parts are really hard to come by and the gasket seems in good shape, so I hope I can reuse it. __________________ Sailing Maryland Blog: http://sailingmaryland.blogspot.com/

30-06-2009, 07:30	#4
fareweather Registered User Join Date: Jan 2008 Location: Colorado Boat: Manta 40 Posts: 98	You'll probably be ok with it, I have reused many and only occasionally have a minor leak. __________________ Moderators are cool.

01-07-2009, 05:11	#6
sneuman Senior Cruiser Join Date: Aug 2005 Location: Magothy Marina, Severna Park, MD Boat: Tayana 37 Cutter - "Symbiosis" Posts: 1,371 Images: 37	Thanks all. Any tips on whether/how I should try to clean the carbon deposits? __________________ Sailing Maryland Blog: http://sailingmaryland.blogspot.com/

30-06-2009, 20:03	#5
sildene Registered User Join Date: Mar 2007 Location: Sydney Boat: s/v Sildene, a Cole 43 sloop Posts: 70	I used CRC Maniseal Exhaust Cement to enhance the gasket. I bought it in Australia but believe a similar product will be available globally. It is commonly used in car engines, and is designed to take exhaust temperatures. Martin

01-07-2009, 06:39	#7
fareweather Registered User Join Date: Jan 2008 Location: Colorado Boat: Manta 40 Posts: 98	If it is thick caked on stuff use a screwdriver to scrape it off, lighter deposits can be removed with any number of solvents, lacquer thinner, brake cleaner etc. Use the solvent for the mating surfaces. Just yesterday I ordered this material to make a custom gasket for a new turbo setup that I couldn't find the proper gaskets for. Don't know how it will work yet but it is cheap and has good reviews. Amazon.com: Mr. Gasket 5961 Ultra Seal Exhaust Gasket Material: Automotive __________________ Moderators are cool.

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