Cm2350 reliability
05-08-2019, (Subject: Cm2350 reliability ) 
Post: #1
Cm2350 reliability
I have had 870s,871s and 2 cm2250s. I know there were problems with the early cm2250s but haven’t heard much about the Cm2350. Any issues I should look at? I’m looking at a 2016 truck right now.
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05-08-2019, (Subject: Cm2350 reliability ) 
Post: #2
RE: Cm2350 reliability
Fuel pump still explodes and wipes out the motor if it's not rebuilt every 3-400k. Evidence of this is smorgan87's recent post.
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05-08-2019, (Subject: Cm2350 reliability ) 
Post: #3
RE: Cm2350 reliability
I want to say they are more prone to carbon packing too...
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05-08-2019, (Subject: Cm2350 reliability ) 
Post: #4
RE: Cm2350 reliability
Lmao. I bought a 15 model pornstar end of last year. It had about 30k since a partial inframe (pinston rings, liners, and a head) due to a carbon packing issue with the earlier 2350 engines and as a result polishing the liners. Well week b4 last my oil psi took a nose dive and had some valve chatter with the jakes on. At first the oil psi was somewhat ok just lower than normal then it went to 20psi at 1500 rpm. Took to dealer when I'll got home and they told me to chage the filter. I did that my needle pegged out at 120psi but dropped to nothing after it warmed up. Back to the dealer after a chat with the svc mgr. Well after several hrs of diagnostics, they dropped oil pan, pulled main and rod caps. The bearings were chewed all to hell. Off comes the fuel pump... its come apart right on schedule at 420k miles. So an engine with less than half a mil on it has been half arse inframed and now replaced. Imo they can be a good engine but id lower the compression, drop the liner height to what rawze suggests (.014?) And have it demandate tuned by one of the guys here (i think uni has done those compression changes.) Just my opinion on the matter. U could also stick with an 871, have it tuned real nice and roll on to a million miles b4 screwin with it.
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05-08-2019, (Subject: Cm2350 reliability ) 
Post: #5
RE: Cm2350 reliability
Compression lowering is experimental. No verdict yet. If the liners are right probably necessary.
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05-08-2019, (Subject: Cm2350 reliability ) 
Post: #6
RE: Cm2350 reliability
I was thinking if a person bought a truck that was running and seems healthy. Why couldn’t you pull the head and liners. Cut and shim the block bearings rings and oil pump and fuel pump. Reuse pistons and liners. Or maybe just new liners. Wouldn’t that be away to start off fairly right. Maybe 20k inframe instead of the full 30k
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05-08-2019, (Subject: Cm2350 reliability ) 
Post: #7
RE: Cm2350 reliability
I was thinking if a person bought a truck that was running and seems healthy. Why couldn’t you pull the head and liners. Cut and shim the block bearings rings and oil pump and fuel pump. Reuse pistons and liners. Or maybe just new liners. Wouldn’t that be away to start off fairly right. Maybe 20k inframe instead of the full 30k
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05-08-2019, (Subject: Cm2350 reliability ) 
Post: #8
RE: Cm2350 reliability
Has any one ever used diesel force to clean the carbon out of engine and complete system supposedly DPF/SCR/EGR
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05-08-2019, (Subject: Cm2350 reliability ) 
Post: #9
RE: Cm2350 reliability
(05-08-2019 )ababajoni Wrote:  Has any one ever used diesel force to clean the carbon out of engine and complete system supposedly DPF/SCR/EGR
The way some of these engines carbon up i cant imagine any chemical additive cleaning it out. The problem is the amnt of soot the things produce. Fix the cause of the problem dont just keep cleaning up the problem.
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