300+ rebuild

[Geoff Weeks]

I installed my liner seals with rubber lube, that way they didn't start to swell until hit with engine oil. Cummins says to use vegetable oil for lube, which is also the base of rubber lube.

-71 series were dry, -92 series were wet, when it comes to 2 stroke Detroit. 

[Joey Mack]

Interesting GW.  The 3179 DF john deere engines I built says use Dawn and water mixed, and be quick because the oring will swell. Those liners had 3 different types of orings, so position was key.  

[Freightrain]

Question of the night:

Pulling injectors.  Mine are "stuck".  Tried giving one a smack with a pry bar and no go.  

Puller the best way?  Do you remove the nut and thread puller on that(what thread is it?)or use the banjo threads(which seems like metric m10).

[Joey Mack]

Shouldnt be metric.  Do they turn a bit? The oring is probaly rusted and stuck. My 673 took hours the get them out. I used penatrating oil and a long big screw driver to work them back and forth and every so often i would pry them up and rotate the best i could.  I also had to work the studs out at the same time.  It sucked because i didnt ever do it before.  The heads were from an engine that sat outside, uncovered.. 

[Joey Mack]

I just looked at your first post last summer..  Awesome seeing that tip turbine sittin on the trailer.. youve come quite a ways since then..  🍻

[Freightrain]

Tight as prom night... 😆 

Rear head looks like they have been out as different shade of color and cleaner looking.  Front head they are packed with dirt all the way up to clamp.  Ugh.  I was hoping to take to machine shop today but may have to wait a week.

[Joey Mack]

Talk about packed with dirt... the parts engine that i needed the heads from had mouse nests built to the top of the valve covers.  I cant seem to find the pictures. The mouse urine had rusted the rocker assemblies to the point they were too pitted to use.   Good luck...

[Freightrain]

The banjo threads are m10x1.0(haven't confirmed pitch but likely but OD is .390).  I have everything metric at work because we do a lot of metric) but nothing at home.

Might buy a few bolts on way to shop and use their small slide hammer to try to pop them loose.

[Freightrain]

So with working with injectors, I was poking around my manual I looked at injection pump numbers.  Knowing this is set at 295 HP(lowest setting), I wonder what pump number is the 320hp model?  It doesn't denote anything like that.

Being a gear head I am already thinking of more HP.  😲. If I knew what pump number for 320 hp version I could send pump out and tell said shop to make it to that specification.  Maybe.  Just dreaming.

[fjh]

12 hours ago, Freightrain said:

Question of the night:

Pulling injectors.  Mine are "stuck".  Tried giving one a smack with a pry bar and no go.  

Puller the best way?  Do you remove the nut and thread puller on that(what thread is it?)or use the banjo threads(which seems like metric m10).

I had them stuck so bad even with a puller it ripped the the threads out of the return nut! Also had the injector sleave com out with the injector! This can happen on a 4 valve injector as well if the bottom injector washer does not seal correctly ! not more gooder! 😡