m35a2 quiet turbo

[JawSaw]

what are the symptoms of a bad turbo?

 

[VPed]

Take the intake pipe off and feel/turn the shaft within. It should turn easily with almost no slop/play.

 

[Katavic918]

The d turbo is pretty quiet. You can hear it better with earplugs in but it's still faint. The above check is a good one. Why do you suspect a bad turbo. An m35a2 should be able to pull the front wheels off the ground under acceleration.

 

[Jeepsinker]

That is really freakin funny!

 

[VPed]

An m35a2 should be able to pull the front wheels off the ground under acceleration.

Well shoot, my turbo must be bad despite passing the test I described

 

[Warthog]

An m35a2 should be able to pull the front wheels off the ground under acceleration.

That is why they put the tandem axles in. To keep from popping a wheelie.

 

[dmetalmiki]

A poor or failing turbo will result in lower power, (some say not)..and probably a lot of blue smoke. Also if failing badly there will be a squeaking/screeching noise from contacting parts.

 

[gimpyrobb]

Check with a boost gauge.

 

[brianp454]

There are a small number of ways they can fail as they are pretty simple devices. The posts so far have focused on the wheel not turning properly and what happens as a result. The seals can also fail and leak engine oil into the intake or exhaust. If it leaks into the intake the engine goes into runaway depending on the amount. Any multifuel operator should know about the risk of runaway and know what to do in that situation. If you haven't already done so, you should check out all of the TM's here and on other sites.

 

[Katavic918]

There are a small number of ways they can fail as they are pretty simple devices. The posts so far have focused on the wheel not turning properly and what happens as a result. The seals can also fail and leak engine oil into the intake or exhaust. If it leaks into the intake the engine goes into runaway depending on the amount. Any multifuel operator should know about the risk of runaway and know what to do in that situation. If you haven't already done so, you should check out all of the TM's here and on other sites.

A runaway diesel is a scary thing. Yes you should have a plan of action in the very unlikely event it happens. I wouldn't lose too much sleep worrying about it though. I think you would have a fair amount of warning if seals start to leak bad enough to approach a runaway situation. Such as excessive smoke or difficult to control rpms. But yeah, anything is possible.

 

[gimpyrobb]

As someone who has burnt the seals out of his turbo, I can tell you that they tend to leak to the exhaust side rather than the intake. I'm not saying it can't happen, just that it isn't likely.

 

[Katavic918]

Correct me if I'm wrong but I believe the intake side uses a labyrinth seal (mechanical seal). Pretty fail proof.

 

[JDToumanian]

A runaway diesel is a scary thing. Yes you should have a plan of action in the very unlikely event it happens.

Drop in a 4-53T Detroit after the multifuel detonates.

 

[gimpyrobb]

Its possible. I am not as technically versed as some of the others on this site. I can only go by my experience.

 

[Katavic918]

Drop in a 4-53T Detroit after the multifuel detonates.

Is that a drop in replacement or would the trans have to go also? Sorry to the OP I think I may be getting off topic. I had just been thinking about a possible replacement if the ole MF does go south.

 

[Jeepsinker]

It would be a whole lot easier and cheaper to just source another multifuel. It is not a bolt in swap. The Canuck deuces had an Allison behind the 4/53t.