2.8L M20 build - Now with 2.7L!

[Delraco]

This is good news. In for pics

[Simple_Smith]

Pics or it didn't happen! haha glad to hear you're still truckin

[acolella76]

Got the block and everything back from the machine shop! Had the block shaved .080" (2.032 mm) and honed. They even cleaned and painted the block for me. It looks fucking good, I dont even want to put it together now.

Plastigage'd the main and rod bearings and everything is dead nuts. Went to install everything and I forgot the assembly lube and ring compressor at a friend's house! Will update with pictures tonight or tomorrow!

[acolella76]

you shut yer got damn mouth now boy

[325e10]

hurry up damnit

[acolella76]

honestly i paid 100 bux for the crank. I tried to sell it twice now and its still taking up space. Im never gonne use it,if you had something cool I would trade you,r3vlimited stickers, yellow fog bulbs just about anything really. im just worried how expensive it would be to ship? and no unfortunately the crank is stock, untouched. did you need the rods too?

I appreciate the offer but since I'm trying to get this finished as soon as possible so my car is drivable, I think I will have to pass for now.

[20gmr]

honestly i paid 100 bux for the crank. I tried to sell it twice now and its still taking up space. Im never gonne use it,if you had something cool I would trade you,r3vlimited stickers, yellow fog bulbs just about anything really. im just worried how expensive it would be to ship? and no unfortunately the crank is stock, untouched. did you need the rods too?

[TurboJake]

So you are saying that you know of a company that will only machine a couple rod journals of a crank undersize?!?

There is no reason they would turn just one down if it is already chucked up to turn any. Just the fact that it would throw the crank out of balance should be enough to see why they wouldn't.

The dealer(possibly others) sells single pairs of rod bearings with different color codes for the same size journals with slight size variances, not because somebody turned down one journal...

Yes I am. Usually not by their own choice though. It's always the cheapass customer that says "Whatever is the cheapest"

No reason, usually. Unless again, cheapass customer says so. The customer is always right, so they get what they want even if it's doomed to fail. If they want it, and the shop owner/machinist is enough of an asshole or cheapass to do it, that is exactly what will happen.

It's not just the dealer, and not just the small variances. It ranges across a wide amount of engines, especially when the engine shop had to use those small variance bearings from one kit, and mix them with another kit, leaving them with some sitting around. Along with that you can purchase the single bearing pairs in multiple sizes. It's offered, so it happens.

All I'm trying to say is that it's possible, has happened, and will continue to happen because of cheap ass people. Nothing more

[acolella76]

Hey man, Im taking a video today of the rod knock I developed.

Basically me wiggling the rods back and forth. My knock started out the same way yours did

I would definitely check it out!! Lol

im In for this thing staying a 2.8 I still have all my short rods and an m52 crank trade me something cool for it lol.

Is it already cut down to fit the M20 pistons? What do you want for trade

[20gmr]

im In for this thing staying a 2.8 I still have all my short rods and an m52 crank trade me something cool for it lol.

[ForcedFirebird]

Crank is done if they are really .020" out of round, should be .0005" or less. Oil needs about .0003" on a diameter (.00015" per side). Plastigage would tell this if they were applied 90* apart and 2 measurements taken, but you really need a mic to know when it's close to true.

[5Toes]

Hey man, Im taking a video today of the rod knock I developed.

Basically me wiggling the rods back and forth. My knock started out the same way yours did

[acolella76]

I will gladly take them off of your hands, but I don't want them to go to waste! If the machine shop tells me mine are too goofy to use then I will let you know!

[LJ851]

lol that makes sense! But why else would the bores be worn more on the intake/exhaust side of the engine? that is where I put the gapped part of the rings on the pistons, opposing each other of course, could that possibly be it? I guess the pistons are fine then, huh?

I will be taking all of my pistons/rods/bearings/rings/block to the machine shop this time.

The bores wear on the intake/exhaust sides because the thrust angle of the con rod as the crank rotates puts side load on the piston in those two directions.

Let me know if you want any pistons, etc.

[acolella76]

Pistons aren't round, silly! Well, not when they are cold anyway.

I have 5 pistons/rods because i gave one to delatlanta1281 to help someone out. You can have them for free because i like you.

Seriously, if you don't have the proper measuring equip to to measure your parts, save yourself much future pain and anguish and pay a machine shop to spec your parts before you assemble your engine again. It is not a lot of work if you have the right tools.

lol that makes sense! But why else would the bores be worn more on the intake/exhaust side of the engine? that is where I put the gapped part of the rings on the pistons, opposing each other of course, could that possibly be it? I guess the pistons are fine then, huh?

I will be taking all of my pistons/rods/bearings/rings/block to the machine shop this time.