injector service for DD 35's

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pop pop
1010 crawler
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Location: chandler, arizona

injector service for DD 35's

Post by pop pop » Fri Feb 17, 2023 4:08 pm

has anyone sent their injectors in for service? where to? and at what cost?
440icd/602/8a,,440icd/831/ripper,,440icd/831/3pt.,misc. 440 parts, i have 5 of these now, but i can stop anytime :cry:

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pop pop
1010 crawler
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Posts: 490
Joined: Thu Aug 27, 2009 12:07 am
Location: chandler, arizona

Re: injector service for DD 35's

Post by pop pop » Thu Mar 02, 2023 4:09 pm

local shop here has told me that they can change my injectors for about $150 each. :shock:
from S series to N series is what I think he said,
I dont know whats involved in that but will find out the details soon enough.

and on another related subject;
I read there are 2 different cylinder sleeves,
that being the N and S series which can be changed too, and probably pistons too,
who knows,,,, really, who knows? (enlighten me)
I have not found any local mechanics that knows enough about the 2-53, obviously a dying lot.
my old dead uncle was a lifelong mechanic for JD, he knew more than I could absorb.
2-53's were just not popular around this territory.
440icd/602/8a,,440icd/831/ripper,,440icd/831/3pt.,misc. 440 parts, i have 5 of these now, but i can stop anytime :cry:

Jim B
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Re: injector service for DD 35's

Post by Jim B » Thu Mar 02, 2023 4:53 pm

N series is an upgrade from the S. Supposed to run a little stronger, less smoke and easier starting. I don't know exactly but expect they bumped the compression up a bit.

Pistons and sleeves, cam follower springs, and valve springs, along with injectors, were some of the changes. There might have been something around the blower as well. I'm not sure if the injectors used the same timing tool or not. Changing to the N injectors was common and sounds like it might be the only choice now. I haven't had to do anything to Jimmies/Detroits for years, so I could be off on some of this.

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Lavoy
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Re: injector service for DD 35's

Post by Lavoy » Fri Mar 03, 2023 9:11 am

N series pistons are about 4 points of compression higher than S series. It makes a HUGE difference in starting, absolutely no comparison. Always put N series or later injectors with the N series pistons. It's not a horsepower issue, it is just the starting. 53 series engines are or can be hard starters, more so at colder temperatures. The N series pistons virtually eliminate this issue.
S series pistons are still available as they would be used in any turbo applications.
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