Jump to content

  • Welcome To Mopar1973Man.Com LLC

    We are a privately owned support forum for the Dodge Ram Cummins Diesels. All information is free to read for everyone. To interact or ask questions you must have a subscription plan to enable all other features beyond reading. Please go over to the Subscription Page and pick out a plan that fits you best. At any time you wish to cancel the subscription please go back over to the Subscription Page and hit the Cancel button and your subscription will be stopped. All subscriptions are auto-renewing. 

Exhaust manifold

mountaindan
 Share

Recommended Posts

trreed

trreed

Posted
Posted (edited)

Agreed.  Stock.  

As for getting it off, I would definitely soak the turbo mounting bolts in PB Blaster a few days before attempting to remove them.  And the manifold bolts I'd soak in PB Blaster as well and then attempt to remove them when the motor is a touch warm (120* or so)

Edited by trreed
Link to comment
Share on other sites
  • Owner
Mopar1973Man

Mopar1973Man

Posted
  • Owner
Posted (edited)

Don't use a wrench or a ratchet. If you can use an impact gun. Better chances of shocking it loose with impact than pulling torque on an already rusted fastener. I agree lots of PB blaster for a couple of days soaking. Block Heater is good for holding the temp up for you around 100-110*F.

Edited by Mopar1973Man
Link to comment
Share on other sites
trreed

trreed

Posted
Posted (edited)

Everything is breakable.  It all boils down to the strength of the material being used (in this case quality of the cast and wall thickness), and use.  Guys who drive hard and shut the truck down right away will eventually see cracks due to excessive latent heat.  Guys who let the truck cool to 300-350* will usually see a longer service life.  

That being said, I don't like Dorman parts either.  In my experience, they are usually made cheaply and perform cheaply. 

Edited by trreed
  • Like 1
Link to comment
Share on other sites
  • Owner
Mopar1973Man

Mopar1973Man

Posted
  • Owner
Posted
7 minutes ago, trreed said:

Everything is breakable.  It all boils down to the strength of the material being used (in this case quality of the cast and wall thickness), and use.  Guys who drive hard and shut the truck down right away will see cracks due to heat cycling.  Guys who let the truck cool to 300-350* will usually see a longer service life.  

That being said, I don't like Dorman parts either.  In my experience, they are usually made cheaply and perform cheaply. 

 

Some of us are even smarter... Look at the turbo timer EGT setting.

Capture+_2018-04-20-08-52-55.png

Link to comment
Share on other sites
KATOOM

KATOOM

Posted
Posted
9 hours ago, trreed said:

Everything is breakable.  It all boils down to the strength of the material being used (in this case quality of the cast and wall thickness), and use.  Guys who drive hard and shut the truck down right away will eventually see cracks due to excessive latent heat.  Guys who let the truck cool to 300-350* will usually see a longer service life.  

That being said, I don't like Dorman parts either.  In my experience, they are usually made cheaply and perform cheaply. 

 

Agreed everything is breakable and quality is generally the main variable why things do.

But over the many years I've always understood exhaust manifold cracking was nothing to do with shut down temperatures but rather because of high EGT's while pulling up hills and then going downhill off the throttle which rapidly cools the exhaust temperatures.  So that said, Its been suggested that people with exhaust brakes experience less manifold cracking problems simply because the exhaust brake keeps the EGT's hotter on the downhill ride.  Less extreme hot to extreme cool temperature fluctuations means less cracking. :thumbup2:

  • Like 3
Link to comment
Share on other sites
 Share
Go to topic listing

Rate The Author

Please take the time and give the author a 1 to a 5-star rating for the information you have gained from anywhere on the website. All forum threads, articles, etc. If a members post is good information please don't forget to tell them "Thanks" or "Like"

Rate Us On Google

Please take the time and visit our Google Review page and give us a review of our services.

Tip Jar

If Mopar1973Man.Com has helped you with quick and timely information for your repair please consider tossing a tip in the Tip Jar

×
×
  • Create New...