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M21 Engine Rebuild
Posted: Jun 22, 2017 10:19 PM
by z122643
Re: M21 Engine Rebuild
Posted: Jun 22, 2017 11:04 PM
by noddaduma
Nice start! Keep us posted.
Re: M21 Engine Rebuild
Posted: Jul 02, 2017 5:45 PM
by z122643
Re: M21 Engine Rebuild
Posted: Jul 06, 2017 2:25 AM
by z122643
Re: M21 Engine Rebuild
Posted: Jul 24, 2017 5:35 PM
by Kopek130
Dang so many photobucket accounts have been slammed.
I've managed to snag saving the page to pdf before it happened. Here it is here.
https://1drv.ms/b/s!Ar5iUNh_SbR27mKpw-4D8A70ep09
Re: M21 Engine Rebuild
Posted: Aug 02, 2017 10:41 AM
by z122643
$400 to restore all my photos. Ransom-ware! FUCK THAT!
Re: M21 Engine Rebuild
Posted: Aug 02, 2017 10:14 PM
by Kopek130
How's the rebuilding going? I'd love to do that to mine. Also post what brands of bearings you're buying!
Re: M21 Engine Rebuild
Posted: Aug 05, 2017 1:08 PM
by z122643
Currently in the cleaning stage. I don't know if people want to see that ;v). As for bearings I will be using King bearings.
Re: M21 Engine Rebuild
Posted: Jun 19, 2018 12:00 AM
by z122643
...and we're back. We had some work/life issues come up but we will start up the old engine project again.
Starting with a question. Anyone know how to remove the block heater?
Re: M21 Engine Rebuild
Posted: Jun 20, 2018 8:24 AM
by gadget73
Lots of work, thanks for the pics.
Took a quick look in the manuals I have and I didn't see how the heater comes out. I want to say mine looks different than yours anyway. Wild guess, I'd expect an expansion plug situation, either the thing unscrews some to release or it has a bolt through the center to expand a rubber plug.
Re: M21 Engine Rebuild
Posted: Jun 21, 2018 2:45 PM
by z122643
A lot of digging later
Re: M21 Engine Rebuild
Posted: Jun 24, 2018 5:00 PM
by gadget73
hm, seems Ford neglected to put that bit in their manuals.
Re: M21 Engine Rebuild
Posted: Jul 28, 2018 6:50 PM
by z122643
Sorry for the absence. We have been having trouble sourcing some parts. We had the stock pistons and rods on order with BMW but they back ordered them with no ETA... so I'll just have to make them myself.
Heat block finally out, the manually lied. It took some generous swings of a dead blow hammer to remove.
Time for a bath
Re: M21 Engine Rebuild
Posted: Feb 16, 2020 11:28 PM
by z122643
Re: M21 Engine Rebuild
Posted: Feb 17, 2020 8:05 AM
by gadget73
Please tell me that isn't Chevy Orange.
Looks nice though. Honestly less bland than the black paint job mine sports. Its black or its just a sheen of old diesel oil, not completely sure.
Why are you designing new con rods?
Re: M21 Engine Rebuild
Posted: Feb 17, 2020 11:03 AM
by z122643
gadget73 wrote:Please tell me that isn't Chevy Orange.
Looks nice though. Honestly less bland than the black paint job mine sports. Its black or its just a sheen of old diesel oil, not completely sure.
Why are you designing new con rods?
It is Chevy Orange
. After inspecting the rods we found the bore parallelism out, the big end out of round, and PE bore oversized. It make sense to get new ones, and we the facilities to make new/better ones.
Re: M21 Engine Rebuild
Posted: Feb 18, 2020 8:36 AM
by gadget73
good deal. What happened to that poor engine to make it so messed up, just lots of miles or was it abused?
mildly scared whats going on inside mine. Odometer says 195k. The car does not look like a nearly 200k mile car but I have nothing else to go by. It doesn't need oil between changes, so I suppose thats a good sign.
Re: M21 Engine Rebuild
Posted: Jun 01, 2020 4:54 PM
by z122643
Update:
did a dye check on the head and it's cracked. It was cheaper to get a new head then repair the cracked head. Getting closer to assembly.
We want to send out the injection pump for a rebuild. Any suggestions where to send it?
Re: M21 Engine Rebuild
Posted: Aug 30, 2020 3:15 PM
by kingoftarmace2004
where did you find the cracks? just outta curiosity? Thanks! -Paul
Re: M21 Engine Rebuild
Posted: Sep 20, 2020 11:24 PM
by z122643
All the cracks were found between the intake and exhaust valve seats. Using a sonic thickness gauge we estimate they were up to .050" deep. Not great but would have still run for a long while.
Re: M21 Engine Rebuild
Posted: Sep 20, 2020 11:41 PM
by z122643
Re: M21 Engine Rebuild
Posted: Sep 21, 2020 8:25 AM
by gadget73
Does the oil feed tube have pinholes in it so it works as a sprayer or is it just a tube? I honestly didn't check that out on mine when I had the cover off. Just wondering how the cam lobes are meant to lube on these.
Re: M21 Engine Rebuild
Posted: Sep 21, 2020 10:40 AM
by kingoftarmace2004
the cam "sprayer" tube. has holes every cam lobe. it kinda just puts a stream over the lobe as it spins to give it some lubrication. I know you did not ask me, but hey. -Paul
Re: M21 Engine Rebuild
Posted: Sep 21, 2020 11:19 AM
by tig
Subscribed! Love the orange.
Re: M21 Engine Rebuild
Posted: Sep 21, 2020 11:54 AM
by gadget73
kingoftarmace2004 wrote: Sep 21, 2020 10:40 AM
the cam "sprayer" tube. has holes every cam lobe. it kinda just puts a stream over the lobe as it spins to give it some lubrication. I know you did not ask me, but hey. -Paul
Answers is answers, I'm not picky who they come from. Thanks. Next time I happen to have the cover off mine I'll make sure the holes are clear.