Broken exhaust manifold bolt CM870

[Rawze]

(01-23-2020 )Chamberpains Wrote:  Just figured I'd post some pics of things.

The manifold that I took off. The EGR end wasn't sealing anymore to the center section. So I replaced all of it.
..r money in your pocket.

I hope like hell you did this step too,... otherwise you may be doing it again.
http://rawze.com/forums/showthread.php?t...9#pid39699

[JimT]

(01-23-2020 )Rawze Wrote:  I hope like hell you did this step too,... otherwise you may be doing it again.
http://rawze.com/forums/showthread.php?t...9#pid39699

Good info. I see it applies to the cm2250 as well. Thanks!

[Chamberpains]

(01-23-2020 )tree98 Wrote:  Re torque your manifold bolts after about 5 days of use. I torqued all mine in sequence but they all loosened up and had to re torque, been fine since.

So how did you get the broken bolts out?

I got extremely lucky and was able to left hand drill it out and grab it with an extractor. It was really kind of loose in there.

[Waterloo]

Turbo Porn.... Those YTS Turbos are too pretty to mount on our trucks. I wanted to take mine home and put it on the coffee table, and buy one for my nightstand. ;-)

Dude, that motor needs a bath!

[Chamberpains]

(01-23-2020 )Rawze Wrote:  I hope like hell you did this step too,... otherwise you may be doing it again.
http://rawze.com/forums/showthread.php?t...9#pid39699

No, of course I didn't. I see that TSB is listed for cm871 and newer. Maybe that's why there was no mention of it on my quickserve instructions?

My manifold doesn't get assembled with joint seals or anything. The only updates are to put the joint clam shells on if there is a leak at the joint. Maybe without the joint seals, the manifolds on the CM870 is allowed to expand more than the newer engines? I don't know. I'm not trying to explain it away. Or maybe I am... it was a cold greasy day yesterday. I did a rear pinion seal, rear S cams and slack adjusters on the pig too.

I'll contemplate tearing it back down this morning.

[Chamberpains]

(01-24-2020 )Waterloo Wrote:  Dude, that motor needs a bath!

Hahaha,

Looks have never paid my bills. If they did I'd file for bankruptcy daily. I've been a dirt ball since I was a kid. I keep the road salt off of it best I can and clean up leaky oil. After that... meh, it'll just get just as dirty in a week any how. And I've never got a load to a clean construction site.

[Waterloo]

That poor turbo... :-(

LOL!

[Chamberpains]

Beauty queen for a day though!! :-D

[tree98]

(01-24-2020 )Chamberpains Wrote:  

(01-23-2020 )Rawze Wrote:  I hope like hell you did this step too,... otherwise you may be doing it again.
http://rawze.com/forums/showthread.php?t...9#pid39699

No, of course I didn't. I see that TSB is listed for cm871 and newer. Maybe that's why there was no mention of it on my quickserve instructions?

My manifold doesn't get assembled with joint seals or anything. The only updates are to put the joint clam shells on if there is a leak at the joint. Maybe without the joint seals, the manifolds on the CM870 is allowed to expand more than the newer engines? I don't know. I'm not trying to explain it away. Or maybe I am... it was a cold greasy day yesterday. I did a rear pinion seal, rear S cams and slack adjusters on the pig too.

I'll contemplate tearing it back down this morning.

I didn't do it either(I also noticed it's for 871 and newer). I figured if the original bolts lasted 13 years and 500,000 then these new ones will still be ok long after the truck is in the junk heap. Maybe I'm wrong, If so I'll just re do it.