Dauntless exhaust tone passenger side compared to drivers side

I have a question for those of you with the oddfire motor. I have had mine for a few months now and have not really been driving it much till this last week as I had receive my historic plates. I bought the jeep with quite a few problems and did not really run the motor till a couple weeks ago. I have addressed steering, brakes, tune up, timing set, timing cover " had a hole chewed in it" oil pump, water pump, complete suspension replaced, clutch, all fluids changed, transfer case sealed up, axles new gaskets, carb rebuilt,intake pulled "gaskets" , little bit of paint, used tires put on, and now muffles. So now that the glass packs are gone a question has came to mind. My passengers side sounds good but my drivers side sounds great. Very healthy rumble. I have posted a video on YouTube . It's subject head line is "1971 jeep dauntless oddfire exhaust " if you guys would please take a look and tell me what you think I would be very thankful. The jeep runs great, no smoke , pulls strong, and idles well. Thanks. http://m.youtube.com/user/ldaysmith2?feature=guide#/watch?feature=plcp&v=wplSInnxsoA

 

That does sound funny.
I've got nothing.

 

I wish I could help. Mine runs so poorly right now, I don't even know what it is supposed to sound like with stock exhaust.

 

It has me at a loss. Guess I'm going to buy some more tools. Compression test is good hitting 170/155psi. Need to get me a leak down test now to see if valves are seating proper. On cold start up its a bit deeper sounding on passenger side. I have checked exhaust temp off headers with a laser comparing both sides and they are close enough. Worst comes to worst going to pull heads and have them worked. Thanks for checking it out. I went out tonight and fogged intake with mmo till it killed over letting sit over night. Hoping maybe a valve sticking a bit. Jeep had sat for many years before I got it.

 

I noticed this back in 1971 when I put a 198 V6 in my MB, the exhaust sounded differant on each side.
I played with timing, dwell etc.. tuned it so it ran the best, then left it alone.
About 2 years ago I put a Pertronix unit in the distributor, it seemed to make things a bit more even on my 3b with the V6.
The other thing you may want to think about is that there is about 3' of difference in the exhaust pipe lengths between the sides if you are running stock manifolds.

 

My drivers side has more of a rumble than the passenger side. I have often wondered if it had two different mufflers on it.

 

Exhaust length, # of bends, diameter changes, restrictions, even rust buildup inside the pipes and mufflers will have an effect on tone. If it runs good forget it.


Sent from my iPhone

 

One question . Are the plug wires on correct location on cap . FSM has a diagram of firing order

 

Is the heat riser opening all the way?

 

My :v6: has single exhaust,so I don't really have personal experience with this, but one thing that comes to mind is the difference in exhaust manifolds. R side dumps to the rear, L side to the front. That would make a difference in tone. But, if it's running OK, I'd leave it alone.

 

I have hooker headers that were new last month. I had not changed out my cap and am betting that is the case here " hoping it is" I took it for face value as it looked pretty new. I have pulled my distributor and tried running it 180 out with plugs space to make up the difference and same sound. Looking at getting an oddfire hei now. I feel like the motor should be stronger then it is . Had an iron duke that felt stronger more pep in its step. I'm going to go over each comment and make a check list tonight then go over it one by one to cancel them out. You guys are very quick with very good info. Not shooting from the hip here. Thanks again. I will give up dates once I have checked all of the above. Luke

 

I have the same setup as you( dual mufflers off stock manifolds), and I have the same occurrence. The motor is rebuilt(myself) so I know things are at normal clearances and compression levels. I don't have a heat riser(removed and holes welded over)so it's straight exhaust. I'm chocking it up to the difference in the length of the exhaust. The driver's side has to go a bit further then the passenger side, which is pretty much a straight shot out. I think the length gives the exhaust that much more time to "mellow out" so to speak. I have great power, and it runs smooth. It does drive me a bit crazy though, but it's running good.

 

This! It happened to me too way back when there was still a 225 in my Jeep.

 

Common folks it sounds fine .........that's why they call it an "Odd Fire" the motor fires at 90 degrees and then waits 150 degrees to fire again then 90 & 150...........Even fire is every 120 degrees.........Want more power and acceleration? Take that 50 + pound flywheel weight off the crankshaft......and put a 27 lb one in its place. Willys hung it on there years ago to help carry the motor through the broad firing sequence. With a more modern Ignition system the weight really is of not much benefit although some find it helpful off road for crawling.

 

Had an even fire cap http://m.youtube.com/user/ldaysmith2?feature=guide#/watch?v=ezjyefp_TSs&feature=plcp . So I went and bought a new cap today after having pulled my distributor, new plugs, wires, and setting my dwell. Installed it and fired right up. This is a completely new jeep now! I thought it pulled well now it will give me a sec gear bite. I can set my idle down very low and creep off road. The drivers side sounds more quite and passengers side is deeper without the miss I had thought was part of the odd fire. Thanks, now back to getting things done. Going to pull the tub and get the frame painted.

 

You were right on! Thanks a ton

 

Hey Day?
do have a part number for the cap....thanks

 

AIRTEX / WELLS Part # 5D1381 More Info {#JP1014}
w/ Prestolite Dist.


$11.00