Turbo ID

[Moose]

(11-23-2019 )DDlighttruck Wrote:  This is in my goofy mixed year truck. I wish I knew the VIN it came from.

On the passenger side of the engine all the way in the back by the flywheel housing the engine number will be stamped into the top of the block on a machined surface at the top of the deck where the head and block meet in dot matrix numbers.

[Rawze]

(11-23-2019 )DDlighttruck Wrote:  

(11-23-2019 )Rawze Wrote:  What is the part# stamped into the elbow connector pipe coming off the turbo towards the charge air cooler?

Looks like 94 3C

That is not the cummins part#. In the pic you provided though,.. it is there .. it is very faded, located below the set of numbers u mentioned. Yours is the 561 model housing, 3682614? (hard to see but this is what it reads). That elbow is the one commonly found on trucks like my Prostar... A 561 with its alternate impeller, not a typical 551.

Here is a Typical 551 elbow pipe (3684026)... (this is the most common one). they are found on pete's and other trucks with larger, more free-flowing CAC units. ...
   

And here is the one that typically belongs to the not-so-common 561 with its alternate impeller ... They are common on internationals.
   

========

I have seen guys go from the 551 to the 561 because it has bigger housing and elbow, thinking they can get some gains out of it. -- Everyone I have seen try this, they ended up loosing fuel mileage and had to eventually switch back. - Its funny though how it works so well on a Prostar and small tier engines though. I am thinking it was designed to be optimized when using slightly restrictive CAC units? -- Just a guess.


just some thoughts .. Not sure about the Cm870 and its turbo options. It may be different.

[Rawze]

Unlike what most people would think,.. the subtle turbo sub-assembly differences in the 500 series range should be matched to the TRUCK according to its exhaust, intake, and CAC, not so much just the engine /power.

I have seen guys loose 1/2 mile gallon or more when they get it wrong.

what is your truck vin#?

[DDlighttruck]

(11-23-2019 )Moose Wrote:  

(11-23-2019 )DDlighttruck Wrote:  This is in my goofy mixed year truck. I wish I knew the VIN it came from.

On the passenger side of the engine all the way in the back by the flywheel housing the engine number will be stamped into the top of the block on a machined surface at the top of the deck where the head and block meet in dot matrix numbers.

The truck VIN is stamped there or the engine serial number is stamped there?

Chamberpains was suggesting using the truck VIN, I believe, which I don’t have for my engine

[DDlighttruck]

(11-23-2019 )Rawze Wrote:  

(11-23-2019 )DDlighttruck Wrote:  

(11-23-2019 )Rawze Wrote:  What is the part# stamped into the elbow connector pipe coming off the turbo towards the charge air cooler?

Looks like 94 3C

That is not the cummins part#. In the pic you provided though,.. it is there .. it is very faded, located below the set of numbers u mentioned. Yours is the 561 model housing, 3682614 (hard to see but this is what it reads). That elbow is the one commonly found on trucks like my Prostar... A 561 with its alternate impeller, not a typical 551.

Here is a Typical 551 elbow pipe... (this is the most common one). they are found on pete's and other trucks with larger, more free-flowing CAC units. ...


And here is the one that typically belongs to the not-so-common 561 with its alternate impeller ... They are common on internationals.


========

I have seen guys go from the 551 to the 561 because it has bigger housing and elbow, thinking they can get some gains out of it. -- Everyone I have seen try this, they ended up loosing fuel mileage and had to eventually switch back. - Its funny though how it works so well on a Prostar and small tier engines though. I am thinking it was designed to be optimized when using slightly restrictive CAC units? -- Just a guess.


just some thoughts .. Not sure about the Cm870 and its turbo options. It may be different.

      

Ok daylight and not being in a hurry helps. Looks like 3682674, it’s faint but it’s there

Outside of clamp to outside of clamp is roughly 4 1/4” where it meets the turbo

[DDlighttruck]

(11-23-2019 )Rawze Wrote:  Unlike what most people would think,.. the subtle turbo sub-assembly differences in the 500 series range should be matched to the TRUCK according to its exhaust, intake, and CAC, not so much just the engine /power.

I have seen guys loose 1/2 mile gallon or more when they get it wrong.

what is your truck vin#?

2HSCHAPR65C000849

Original mill was a CPL8519

Mill that’s in it now is a CPL8287

Thanks

[DDlighttruck]

I did compare the the CPLs but other than matching part numbers I don’t know how to dig deeper

[Moose]

The VIN gives this ESN


Which gives a superseded turbo assy of 2881993 for a family 2

If I go try to build a 8287 engine the best they offer is a long block which does not include a turbo... the 8287 long block also includes 8288, 8520 & 8523 which all appear to be family 1 engines and would be a different turbo (2881994)

The engine number would be back here if it's accessible.
   
   

[DDlighttruck]

(11-24-2019 )Moose Wrote:  The VIN gives this ESN


Which gives a superseded turbo assy of 2881993 for a family 2

If I go try to build a 8287 engine the best they offer is a long block which does not include a turbo... the 8287 long block also includes 8288, 8520 & 8523 which all appear to be family 1 engines and would be a different turbo (2881994)

The engine number would be back here if it's accessible.

   
I see where you’re saying to look but it’s a little buried. Thanks!

So a family 2 CM870 takes a larger or just different turbo than a family 1 CM870?