Jump to content
Mopar1973Man.Com LLC

  • 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

leon
 Share

Recommended Posts

leon

leon

Posted
Posted

So I degreased the motor, and my mechanic friend stole my truck truck while I was out of town and replaced the hemorrageing tappet cover gasket. He pointed out that I have a crack in my exhaust manifold, and showed it to me. 

That bumps up that repair to the top of the list. So I priced one at Orieley's and it's not too bad ($250ish). Are exhaust manifolds all the same, or should I stay away from the chain store part?

Any thing to watch out for, other than cracking bolts, etc?

CTcummins24V

CTcummins24V

Posted
Posted

If you can wait, look online for sales on 3 piece manifolds. They don't add power or performance, but a lot less prone to cracking. I got a 3 piece ATS manifold for under $300 a couple years ago when XDP had a sale.

TFaoro

TFaoro

Posted
Posted
5 hours ago, Mopar1973Man said:

Hmmm... 15 years old and closing the gap on 300k miles and my stock OEM exhaust manifold still looks likes it new out of the box. Cracks? what cracks? :shrug:

EGT's :stirthepot: 

I liked my 3 piece other than it had a defect in the sealing surface and I had to have it machined when I sold it. 

I really really like my stainless. Yes they cost more, but to me it's worth it. 

CTcummins24V

CTcummins24V

Posted
Posted
4 hours ago, jlbayes said:

The only manifolds you should be considering are stainless one piece. Had a cracked ats, not impressed.

 

Daily driving/towing or sled pulling? What are you egts during a run? 

jlbayes

jlbayes

Posted
Posted
11 hours ago, CTcummins24V said:

 

Daily driving/towing or sled pulling? What are you egts during a run? 

 

DD, drag racing, sled pulling. Never towed with it. Egts where as high as 1800* with it. It was fixed with braze once. And it was so hot enough times the braze displaced and settled. The stainless diesel manifold that replaced it, sees over 2k* with no signs of any issues. The only thing that annoys me is how long it takes to cool off.

  • Like 1
Silverdodge

Silverdodge

Posted
Posted
16 hours ago, jlbayes said:

 

DD, drag racing, sled pulling. Never towed with it. Egts where as high as 1800* with it. It was fixed with braze once. And it was so hot enough times the braze displaced and settled. The stainless diesel manifold that replaced it, sees over 2k* with no signs of any issues. The only thing that annoys me is how long it takes to cool off.

Are u on stock pistons or fly cut coated 

jlbayes

jlbayes

Posted
Posted (edited)
9 hours ago, Silverdodge said:

Are u on stock pistons or fly cut coated 

 

Stock. Coatings do not last at these heat levels. I would never fly cut either. Compression is a good thing.

Edited by jlbayes
  • 2 weeks later...
  • Owner
Mopar1973Man

Mopar1973Man

Posted
  • Owner
Posted (edited)
11 minutes ago, jlbayes said:

There is no reason to change a manifold on a stock truck.

 

Absolutely true. Also, most daily driver trucks don't require upgraded manifold either.

 

Now performance trucks like TFaoro or Jlbayes now your talking another story these guys are pushing a lot of boost and lot of fuel and need the engine to breathe. Even with as much as I got my normal cruising boost pressure is still well below 10 PSI so I don't flow enough to even worry about upgrading nor worry about EGT's temps. Example 65 MPH I'm 2-3 PSI of boost and 550-600*F EGT's. This doesn't require an upgraded manifold. 

Edited by Mopar1973Man
leon

leon

Posted
  • Author
Posted
10 hours ago, jlbayes said:

There is no reason to change a manifold on a stock truck.

Unless of course its cracked like mine…but I understand what you really meant :-)

  • Like 1
 Share
Go to topic listing
×
×
  • Create New...