• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

cummins went

petepilot

petepilot

Senior Member
Joined
Jul 7, 2018
Messages
2,168
Location
central shenandoah valley va,
we have a 560 isx cummins in a compressor that has gave up. I am being told that it blew #6 injector completely out of the head. has anyone heard of one doing this ? I find that statement very hard to believe. owner says cummins is telling him that there is no possibility of rebuilding it.
 
D

DB2

Senior Member
Joined
Jan 4, 2015
Messages
1,007
Location
Winnipeg MB Canada
My father who was a field service technician for the Cat dealer for decades always referred to them as Cummaparts

He had a picture of one cut completely in half from a failed rod save for the head

Alway made him laugh to look at it
 
Nige

Nige

Senior Member
Joined
Jun 22, 2011
Messages
29,390
Location
G..G..G..Granville.........!! Fetch your cloth.
funwithfuel said:
And I've always referred to this shade of yellow as Scaterpillar :)
Click to expand...
I'll see your in-line 6 and raise you a 3516..... In addition to the block even the RH camshaft on this one was broken in 2 pieces, and not at the bolted joint just in case anyone asks. The crankshaft was good to go again though, and 15 heads......

upload_2019-4-25_20-44-42.png
 
Last edited:
kshansen

kshansen

Senior Member
Joined
Mar 11, 2012
Messages
11,165
Location
Central New York, USA
Occupation
Retired Mechanic in Stone Quarry
I tried to find the picture of the 3408 we had that a few months after a major rebuild by the Cat dealer puke a rod out on the ground and cut block in half and sucker punched the starter almost in half, I know I have it somewhere but not finding it right off. Never got a picture of the 12V-71 that snapped a rod while running at 1,800 rpm under load running a generator. Water down the stack is not good for a Detroit con. rod!
 
funwithfuel

funwithfuel

Senior Member
Joined
Mar 7, 2017
Messages
5,600
Location
Will county Illinois
Occupation
Mechanic
kshansen said:
I tried to find the picture of the 3408 we had that a few months after a major rebuild by the Cat dealer puke a rod out on the ground and cut block in half and sucker punched the starter almost in half, I know I have it somewhere but not finding it right off. Never got a picture of the 12V-71 that snapped a rod while running at 1,800 rpm under load running a generator. Water down the stack is not good for a Detroit con. rod!
Click to expand...
No rain flap or baloney cut on that stack pipe
 
R

RZucker

Senior Member
Joined
Jul 7, 2013
Messages
4,077
Location
Wherever I end up
Occupation
Mechanic/welder
I blew a rod once in an old '77 GMC with a 400 small block, had about 6 cars on my rear bumper when it went and sawed the pan in half. I doubt it changed their minds about tailgating.
 
R

RZucker

Senior Member
Joined
Jul 7, 2013
Messages
4,077
Location
Wherever I end up
Occupation
Mechanic/welder
kshansen said:
I tried to find the picture of the 3408 we had that a few months after a major rebuild by the Cat dealer puke a rod out on the ground and cut block in half and sucker punched the starter almost in half, I know I have it somewhere but not finding it right off. Never got a picture of the 12V-71 that snapped a rod while running at 1,800 rpm under load running a generator. Water down the stack is not good for a Detroit con. rod!
Click to expand...

Saw a 3408 in a D-9N do exactly the same thing.
 
Truck Shop

Truck Shop

Senior Member
Joined
Dec 7, 2015
Messages
16,998
Location
WWW.
RZucker said:
I blew a rod once in an old '77 GMC with a 400 small block, had about 6 cars on my rear bumper when it went and sawed the pan in half. I doubt it changed their minds about tailgating.
Click to expand...

Them SB 400's with the siamese bores were never a motor that had longevity. Had a customer that had one, one cold morning he set the coke and hit the starter.
Went on high idle and immediately tossed a rod through the side.
 
R

RZucker

Senior Member
Joined
Jul 7, 2013
Messages
4,077
Location
Wherever I end up
Occupation
Mechanic/welder
Truck Shop said:
Them SB 400's with the siamese bores were never a motor that had longevity. Had a customer that had one, one cold morning he set the coke and hit the starter.
Went on high idle and immediately tossed a rod through the side.
Click to expand...


I built two 400s that weren't bad, reamed the steam holes to 5/16" (iirc) used a set of 463 (?) cylinder heads for an early 70's 350 with the steam holes drilled to match the block. 268 cam with an Edelbrock SP2P manifold and a good Holley spreadbore carb. If you stayed below 4,000 rpm they ran pretty good. I would have liked to try balancing the bottom end.
 
DMiller

DMiller

Senior Member
Joined
Feb 21, 2010
Messages
16,583
Location
Hermann, Missouri
Occupation
Cheap "old" Geezer
Was ALL on Cat Power Gen as they were doing the initial run in when it turned loose!! Only knocked once, then the little fire, then lots of SMOKE!!! Everybody got all 'Cited and scared and stuff!! I looked thru the door and started laughing!! This was laying in the floor.

Diesel Failure 001.jpg
 
You must log in or register to reply here.
Top