Yep, Bought A '68 Cj5(project)

Hi y'all anyone have suggestions on running the exhaust for the Novak headers. Below is the description from the Novak website. The description kind of confuses Yours truly . It'll be a while, just thinking about it

From Novak:
The short, block-hugging design allows the installer to have the exhaust routed in one of the following three popular ways:

• One circuit under the oil pan, just in front of the sump merging into the opposite circuit which is typically run rearward on the side of the Jeep opposite that of the drop of its transfer case.
• As above, but under the bellhousing slope.
• As above, but behind the transfer case. Then, the exhaust tailpipe can exit the Jeep on either the driver's or passenger's side.

 

It sounds like they are talking having the headers merge in to 1 exhaust pipe. Are you wanting dual exhaust? The second route they suggest sounds like the route of the stock v6 exhaust, crossing under the bell housing. I would not want to have to drop an exhaust pipe to get the oil pan off, personally. Also if I paid for expensive headers I would want dual exhaust. just my opinion.

Still waiting to see what you come up with!

 

Just flip them upside down and run stacks through the hood.

Sorry, I don’t have anything productive to add.

 

In my silly mind and using the KISS principle, I'd say a dual exhaust with a crossover somewhere. I'd like the exhaust to be able to be dropped down/removed if necessary for mechanical repairs. and Yes Grant, I can't imagine having to drop an exhaust pipe to get the oil pan off!

 

Not the same but the duals on my 74 go down each side past the transfer case then have three bolt header flanges before the mufflers to facilitate removal in pieces.

 

you can make out the exits of the headers, or the collector pieces.



seems like lots of room for exhaust


The headers came with the down turns? they are slightly angled, in this case I have them pointed toward the back. I'd say 15-20 degrees




Power steering connected, linkage connected

 

Those look great! I'm waiting to see how they sound after you get the exhaust system in. My Jeepster came with the long headers and duals that exit in front of the rear wheels. They're too loud for my liking. I'm not sure how much of that is the headers or mufflers.

 

Thanks Scott! I think here's what's going to happen~ When I get the Tub back next week after being blasted/primed, I'll set the tub back on the frame, bolt it down~ Then weather permitting, haul the "jeep" to my local muffler shop~ one I know that does classics and let him have at it Sounds like a plan?

 

Here is what I did from here back is easy.

 

Wow Jeff, I'd have to look to see how much clearance there is above the transmission crossmember~ But I like the idea of the flanges , but I know Manny(muffler guy), he always does a welded system from collectors back. Could the exhaust go below the trans crossmember? It'll make more sense to me when the tub is back on. As simple as it may be and I get to thinkin perhaps I could make an exhaust, but I just don't think I could do as good as the muffler guys do.

oh, the sandblaster guy called and said 725.oo for everything(Tub, hood, front fenders, the larger floor panel, roll bar, metal dash) including epoxy coating and should be ready next Tues or Wednesday. I hope the rotisserie and the fender stand proved useful for them.

 

If the jeep exhaust smell bothers you, now’s a good time to consider some catalytic converters.

 

Exhaust doesn't really bother me, but catalytic converters can do that? eliminate the smell? make it less noxious?

 

Yeah, that’s kind of their purpose.

“Catalytic converters are used in exhaust systems to provide a site for the oxidation and reduction of toxic by-products (like nitrogen oxides, carbon monoxide, and hydrocarbons) of fuel into less hazardous substances such as carbon dioxide, water vapor, and nitrogen gas.”
Catalytic Converters

 

Ok, would it matter if an carbureted engine, probably doesn't get very good gas mileage despite being overhauled, would it gum up a converter? I'd be worried about that, then have to ditch the converters. I think I'll be ok with the exhaust going out the back like it should. However, my husband has asthma~ sigh, something to think about

 

From my experience, they just run a little hotter if a rich mixture is fed into them. I think oil vapor/smoke and leaded gas are a bigger concern with converter clogs.

 

Might have a problem mounting the skid plate if going under the crossmember with the exhaust. We used to run the exhaust pipes all the way back behind the rear tires and then point them outwards not downwards. Hugged the inner frame. No smell, quiet, and tucked up out of harm's way.

 

Sounds good Jim! My jeep doesn't have a skid plate, but my brother didn't put his on and it's still here , even though he'll want it back, I could install it for sakes of when having the exhaust made

 

Here's a pic of where the tail pipe came out. Pipes came off headers followed inside frame rail and just past rear spring pivot bolt slowly came out and hugged outside of frame and then outwards to the corners. worked very well, no rock damage, tire rub, etc. I lost hundreds of build up pics which would of showed how it was done------thank you photobucketDon't go to large of pipe and lose back pressure.

 

Under the crossmember would get smashed in the woods,there aren’t pipes hanging below the frame on any of our jeeps.