Exhaust ?

[nspctr1]

My 998 has about a 1/4" hole in exhaust pipe near the Y. It's pretty rusty so thinking about having it replaced. What did you guys do/ use? I know it's going to be a little loud being a diesel but what muffler combo would quiet it down the most? Also, is it best to run single to avoid y or can you run dual. Where did you dump pipes? In front of rear tires, out back?
thx

 

[Wire Fox]

Dual exhaust? Is that a Hummer H1 thing? The exhausts are made different depending on if you have a TD or NA engine, but they all follow the same path to my knowledge: off the headers to merge into one pipe, through the muffler assembly, then exiting out the side pipe-just in front of the rear-left wheel. If you have a dual setup, I don't think that's following any HMMWV spec.

 

[nspctr1]

It's stock, single, was wondering if there were any other configurations that were better or , if you replaced one, what is best option to go back with?

 

[BLK HMMWV]

Headers and some flow masters.

 

[ryanruck]

I had a hole in my crossover pipe near the flange at the driver's side manifold. Ended up just buying a new one and keeping the exhaust stock. It's a pretty free flowing exhaust from what I can tell plus, I want to install a deep fording kit on my truck eventually and changing up the exhaust would make that harder.

Got my new crossover pipe from Equipment Parts Sales. They had the best price I was able to find unless I wanted to put a rusty, used one on there.

If you keep everything stock, just remember that when you replace the crossover pipe, you're also going to need 2 new manifold gaskets (NSN 5330-01-189-9738/PN 12338342) and a new muffler gasket (NSN 5330-01-200-0466/PN 12338339).

A word of installation advice, the crossover might not line up with your exhaust system perfectly when installing. I had to use some ratchet straps to bend and pull everything where I needed and bolt it all together.

 

[nspctr1]

Thx. I need all the help I can get

 

[desmodromic]

Dual exhaust? Is that a Hummer H1 thing? The exhausts are made different depending on if you have a TD or NA engine, but they all follow the same path to my knowledge: off the headers to merge into one pipe, through the muffler assembly, then exiting out the side pipe-just in front of the rear-left wheel. If you have a dual setup, I don't think that's following any HMMWV spec.

What is the difference between the 6.5L NA vs the 6.5L Turbo exhaust?

 

[snowtrac nome]

where the pipes merge, on the turbo version both pipes off the header merge at the turbo exhaust housing side than runs into a down pipe after the turbo the na model merges at the y pipe just like the 6.2

 

[nspctr1]

Exhaust?

Is there a gasket between the manifold flange and exhaust pipe flange

 

[Retiredwarhorses]

No idea where you mean...but there are gaskets at every connection point on the exhaust.

 

[ryanruck]

Yes.

 

[gcbennet]

View attachment Exhaust Manifold.docx

 

[gcbennet]

 

[nspctr1]

Would that be #8

 

[gcbennet]

indeed.

 

[infidel got me]

#8 is a donut gasket.

 

[nspctr1]

awesome and sorry for the dumb ? was already at the exhaust shop. There was a pretty good size hole in the pipe and I had them replace that section for now. It was below the Y so it wasnt that difficult. Thx for replies.

 

[kc5mzd]

What about side pipes (leg burners) and glass packs....

 

[Action]

What about side pipes (leg burners) and glass packs....

or run a big 6" pipe out the top of the fender...

 

[kc5mzd]

or run a big 6" pipe out the top of the fender...

What about dual 6" out the fenders?