Exhaust manifold

[mountaindan]

Got my manifold from Rockauto, can anyone tell me what the plate is for?  Mine don't have this.

[CTcummins24V]

That looks like a 12v california exhaust manifold with egr. You have a 24?

[mountaindan]

Are they the same? Just block off the EGR?   The order says it is for my 24v.

[trreed]

That is the wrong manifold.  24V have round exhaust ports.  12V have rectangular

[mountaindan]

Thanks I will return it.

[KATOOM]

Make sure you sing the little "Rock Auto..." jingle when you do

[jlbayes]

On 4/20/2018 at 9:57 AM, KATOOM said:

If mine ever cracks I'll likely replace it with a 3 piece simply to avoid it ever cracking again and because the come pre-drilled.  Thats me saying that now though...

 

I have seen just as many 3 piece manifolds cracked as I have the stock one piece. I had an ats that was cracked terribly.

[KATOOM]

1 hour ago, jlbayes said:

 

I have seen just as many 3 piece manifolds cracked as I have the stock one piece. I had an ats that was cracked terribly.

 

That right there is valuable information...  Thank you.  There's no need extra spending money to solve something if its not solving anything.

[jlbayes]

You're welcome. I am in much favor of the one piece stainless manifolds (regardless of manufacture). Steeds work as well but they kill spool up due to the CSA (cross sectional area) of the manifold.

[KATOOM]

You could replace a cracked OEM manifold every few months for the price of a stainless.

[Mopar1973Man]

21 minutes ago, KATOOM said:

You could replace a cracked OEM manifold every few months for the price of a stainless.

 

Or you can be like me and not even bother because the exhaust manifold never cracked and I'm at 341k miles and rolling yet.

[ddmk6]

I just installed a BD stainless manifold.  I'm really happy with it.  There is a noticeable difference in performance.  My original manifold cracked out where I had installed the pyro probe years ago. Only had it on for a few months now but I like it.

[jlbayes]

19 hours ago, KATOOM said:

You could replace a cracked OEM manifold every few months for the price of a stainless.

 

Why I buy mine used LOL

[mountaindan]

Got hopefully the correct manifold this time.  When I drill for my EGT does that only monitor the last three cylinders 4 5 and 6?

[dripley]

That is correct.

[KATOOM]

1 hour ago, mountaindan said:

Got hopefully the correct manifold this time.  When I drill for my EGT does that only monitor the last three cylinders 4 5 and 6?

 

The back three cylinders run the hottest due to air flow and coolant restrictions, numbers 5 and 6 specifically.  Knowing the exhaust temp of those three is most important.

[mountaindan]

Got the broken one off, new one on, just need to torque it down, install the turbo and drink a beer, not a bad at all. Raining here now so I will have to drink two beers.  Thanks for your help guys and gals.