ENGINE SOUND FOR M38A1

[JMZ421]

My last M38A1 had that "characteristic" whine of a military vehicle when starting and taking off. I'm sure you know what I am talking about. My new A1 does not seem to have that smooth revving sound. I do need a new muffler, old and rusted, and I know the inside is all rusted out. Could it be that all I need is that new muffler? and/or the whole system? It's currently not loud or anything so this is why I have not rushed to change anything BUT the muffler is shot inside. Thank you for your time. John

[Joe Gopan]

If all is right at 35MPH, you will hear the steady drone of the engine, hum of the tires and slight whine of the transfer case.. A bad muffler, worn engine and sometimes the exhaust reverberating off the RH Bumperette or lifting shackle will add a bit. Other than the slight whine there should be no gearbox noise. M-38A1 is actually quieter than earlier Jeeps as tye fan is barely audible to the driver.

[JMZ421]

Ben, I will start with the muffler. Do you know if the advertised mufflers for around $60 are pretty much the same as NOS? Thank you. John

[Joe Gopan]

Sounds too cheap, some of the dealers are advertising quality replacements, Avoid Omix Brand. OEM are few and far between, Be sure to ask for the gaskets.

[JMZ421]

Thank you. John

[Joe Gopan]

If all is right at 35MPH, you will hear the steady drone of the engine, hum of the tires and slight whine of the transfer case.. A bad muffler, worn engine and sometimes the exhaust reverberating off the RH Bumperette or lifting shackle will add a bit. Other than the slight whine of the transfer there should be no other gearbox noise. M-38A1 is actually quieter than earlier Jeeps as the fan is barely audible to the driver.

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Music to my ears. Your Jeep will talk to you.

[FrankenJeep]

If all is right at 35MPH, you will hear the steady drone of the engine, hum of the tires and slight whine of the transfer case.. A bad muffler, worn engine and sometimes the exhaust reverberating off the RH Bumperette or lifting shackle will add a bit. Other than the slight whine of the transfer there should be no other gearbox noise. M-38A1 is actually quieter than earlier Jeeps as the fan is barely audible to the driver.

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Music to my ears. Your Jeep will talk to you.

I love that "Zuuuuuuuuu-zuuuuuuuuuuuuu" sound a Jeep makes! No mistaking it!

"Its a Jeep thing, you wouldn't understand", goes the sticker!!!!

[Joe Gopan]

My M-38A1 has been "talking to me" for 40 years.

[Yarder]

Mine was yelling at me the last time I took it out. I thought the engine was going out. Turns out the hand brake was partially engaged.

[Joe Gopan]

How's yours sound when it has wound the speedometer past 60 MPH to 0 MPH?
It is not for the weak hearted, you gotta know your machine.

[Joe Gopan]

CAUTION:
Pulling up the M-38A1 hand brake handle at too high a speed can flip the Jeep.

[Joe Gopan]

And a little M-38A1 small talk for Wednesday afternoon.
I worked on M-38A1 Jeeps in the Army and liked them so much I have not been without one for over 50 years.And you can throw throw in a new 50's-60's CJ-5 or two. My CJ-5's had Koenig winches and they came in handy at times where winching thru 100' of muck saved a mile or two of walking.

[MASH_4077]

I've been working on mine today. Needed to do a bit of maintenance on it. Repacking wheel bearings and greased the front end. It's been a few years since I've done the wheel bearings. I grease the front end once every other month. Probably due for an oil change as well. I've put almost 2,000 miles on my jeep since December. It's been a very good summer!

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[Joe Gopan]

What's nice about the M-38A1 is that when it is well tuned it will always have sufficient acceleration to give you a noticible kick in the seat no matter the speed. Those 12 extra horsepower do make a difference.

[Jeeps4Brains]

exhaust reverberating off the RH Bumperette or lifting shackle.

Mine had been doing that since I finished the M38A1. Just the other week to get ready to go to a encampment I added my exhaust tip on to the end of the muffler pipe. It did make a big difference to the exhaust sound. I would not have thought it.