(01-10-2018 )dhirocz Wrote:  I put 6 dimes in mine at 685k. Did a bearing roll as well as new cams and bearings and whatnot to hold me over for the time being. Oil pressure came up about 6 psi across the board with rotella and gear oil.

Set my overhead +.001" on the clearances, helped out alot.

After doing that it quieted down alot. I had a flat cam...if you're valvetrain is noisy, you need to check your cams and overhead pronto! Noisy valvetrain could also be lack of oil up top, as well as a number of things. Sometimes exhaust leaks can also make similar noise as well.

Mine just got a new compressor. Started out making noise that sounded like that as well. I squirted a couple Spritz of WD-40 into the air compressor intake and it quieted it down for a day or so until I could get home.

(01-11-2018 )Ragindirt Wrote:  Going to read up about the dimes today and may actually go this route. Just did and overhead and three new injectors a week ago, everything looked good inside head.

Might actually be time to head over to Atlanta with 718K and 26k hours on her. Tranny more then likely will need replacing too. Shock loaded clutch brake Tuesday. Replaced old one with a two piece to get me back home ( why the shop but a two piece on when they installed new clutch last January is crazy), but it was my fault for shock loading it.
Pulling hills in a turn high to low range got hung up and probably pressed clutch down to far in an attempt to recover gear selection.
Would say 70% time now I have to come to a complete stop just to get high side to fall into low, and cycle clutch the entire stroke. Also have a serious vibration in stick plus 4&5 getting harder to use.

(01-11-2018 )Ragindirt Wrote:  Yep know how brake functions, and yes I probably caused it to fail by applying full pedal trying to get truck back in range selected. I have a manual 10 version of KW auto, so range module is the L shaped block, no leaks. Will check pressure though. yep she sounds little bit louder now days them in the past, little rough getting into 4 and 5. She is in driveway now, dropped two loads and came home for this reason; plus I have a hell of a vibration coming through stick. Waiting on snow to pass so I can look over.

Also was wondering in another trend what would be a better option, 13 or 15; drove both in the past; spare truck I use from outfit I run under has a C15 connected to a 15, pulls my loads well enough, but I find that even in hilly terrain I can miss a few of the upper low split gears.

Got off track here was originally asking how much gear/valve train noise is typical on and 871. Seems as of late it is getting louder.
Be more than happy for someone on here with more experience to call and I'll let them listen if willing.

(01-11-2018 )Hammerhead Wrote:  

(01-11-2018 )Ragindirt Wrote:  Yep know how brake functions, and yes I probably caused it to fail by applying full pedal trying to get truck back in range selected. I have a manual 10 version of KW auto, so range module is the L shaped block, no leaks. Will check pressure though. yep she sounds little bit louder now days them in the past, little rough getting into 4 and 5. She is in driveway now, dropped two loads and came home for this reason; plus I have a hell of a vibration coming through stick. Waiting on snow to pass so I can look over.

Also was wondering in another trend what would be a better option, 13 or 15; drove both in the past; spare truck I use from outfit I run under has a C15 connected to a 15, pulls my loads well enough, but I find that even in hilly terrain I can miss a few of the upper low split gears.

Got off track here was originally asking how much gear/valve train noise is typical on and 871. Seems as of late it is getting louder.
Be more than happy for someone on here with more experience to call and I'll let them listen if willing.

Engine;
If you think your top end is getting louder, I'd pop the rocker cover and make a close inspection of all components in there ASAP. This is the known weakness of these engines.

Transmission;
I'd be inclined to suggest a 13/18 speed over a 15. If you don't do a lot of soft ground or really heavy (>100k) where you need to be able to split the bottom end, then 13. The selectability of usable gears at rolling speeds is just the only way to go.
A 15 speed is just a 10 speed with deep reduction for slow moving, soft ground, site work, etc. They have their place, and IMHO, the highway is not it.
IMHO 9&10 speeds trannys are one of the greatest contributing factors to piss poor driving habits, as the rpm range between gears is large enough that becoming complacent about lugging an engine becomes so routine you don't notice you're doing it.
Having and using selectability in gear choice promotes situational awareness, and allows you to operate the engine in the optimal rpm range for either torque load or fuel efficiency for the conditions you are in at that time.