Long Overdue Maintenance and General Engine Baselining - April 2024
So, in preparation for the Turbo I picked up from Back 40 Imports, I have been baselining the engine specs to make sure there's nothing that could become a potential problem with the added power. I've also been replacing a few things that haven't been done potentially ever...
The list of checks & preventative maintenance:
Compression Check
Oil Pressure Check
Air Restriction check (due to added snorkel and Odd-Iron's adapter)
Valve shim clearance check
Replaced the injectors
Pulled the glow plugs to put my Matco diesel compression tester in. Immediately found that the tester, despite being new... had a leak - so I had to send it back and wait for a replacement... THEN I got to test the compression (and take the glow plugs out again...)
Glow plugs looked pretty clean, so I'm gonna keep them for a while still.
Compression readings I got
1-600 2-620 3-600 4-630 5-600 (a bit slower than others) 6-630 - so everything checks out well above minimum spec.
Oil pressure reading I got
15psi at idle, 65psi at 3000rpm which is also above spec (had me worried because I checked it a few years ago when I was at York Tech and it was a bit low. I've since run Marvel's Mystery oil through my oil system a few times, so maybe that's helped clear things up a bit)
Valve shims were all pretty close to spec, so I'll put them off for a while still.
Air restriction is a little bit higher than I want... a bit over 1psi. So I'll have to mod the connection to my snorkel to be a more direct path.
Injectors - TOOK FOREVER to finally get a full set of 6 Denso injectors. Amayama had 4 of them, but I ended up having to order the last two from 3 different places and just cancelled the orders that didn't ship first.
Printed out the FSM pages so I wouldn't get my manual dirty
Pro Tip: slow and methodical makes this whole process so much easier. (also highlight all torque specs so they're easy to see/remember as you go along)
Pulling the injector lines off. You don't have to pull them all the way off to access things, but it does make it a bit easier.
Old injectors out~
The old injector shims come out easy enough with an angled metal pick