01-30-2019, 09:51 AM
I can answer that, no blind person, can , this text box.
we use 2 tools here, (not counting all surfaces check for warpage , metal checks and pressure checks that all machine shops for engines do.
the bores are checked first for out of alignment, with special tools all shops have
then with bore gage, for excess sized main bores
took me 10hours labor to do that on one block all tools in hand.
Ok, you should get great book , called engine builders say at , Barnes & Noble.
it covers all stuff, not possible type here
but here, put in the wrong bearing caps, and sizes matching crank journal sizes.
with assembly lube
set main bearing cap torque,staged, all caps staged in parallel.
ok>
then if you cant turn it by hand ,now you know way.
roundness, is also in that book,
when you tighten the 4 head bolts say on one cylinder the bores distort.
there are youtube videos and 3d simulations there showing this effect.
and heat, factor. (bores change size and shape from cold to hot.
the rings can only hide a small about of out or round, ok? tiny. Try bending and old ring, see, it don't bend (oops cracked), but can do vertical taper easy
see?
There are 3 ways
1:correct
2:junk yard jerry rigs.
3;Totally wrong, the endless story.
not saying what is right wrong only facts,. I have 4 books of that type, all together wow. full coverage.
one way is to use shims washer on custom sized (length short) mm, for all head bolts (not stock too long)
and torque them to spec, the washers will help spread the forces. and hopefully work. while boring or honing.
out of round is very bad thing mostly
as is warpage
the see how bearing shells really work, most folks have no clue.
links, see crush here.
http://www.kingbearings.com/files/Geomet...arings.pdf
see hydrodynamic lubrication
and
the inside bearing surface is not round
the shells are not simply round inside, and if you know this, measuring with pastigauge works.
one guy didn belive me so we torgue a bearing in the main, and with the bore gauge turned it in this shell, see that needle change, it is real.
one more
torque and heat distortion is covered in all classes and books on engine building
https://theshopmag.com/features/cylinder...ion-part-3
the best engines are last honed hot and pre-torqued,
for sure racing, 1 more HP can win a race
and now, the word green (CO2 rules) means , no bypass gasses, from out of round cylinders.
Also the rings can seat in, if out of round tell how that can happen?
food for though.....hope it Sings like a bird.
we use 2 tools here, (not counting all surfaces check for warpage , metal checks and pressure checks that all machine shops for engines do.
the bores are checked first for out of alignment, with special tools all shops have
then with bore gage, for excess sized main bores
took me 10hours labor to do that on one block all tools in hand.
Ok, you should get great book , called engine builders say at , Barnes & Noble.
it covers all stuff, not possible type here
but here, put in the wrong bearing caps, and sizes matching crank journal sizes.
with assembly lube
set main bearing cap torque,staged, all caps staged in parallel.
ok>
then if you cant turn it by hand ,now you know way.
roundness, is also in that book,
when you tighten the 4 head bolts say on one cylinder the bores distort.
there are youtube videos and 3d simulations there showing this effect.
and heat, factor. (bores change size and shape from cold to hot.
the rings can only hide a small about of out or round, ok? tiny. Try bending and old ring, see, it don't bend (oops cracked), but can do vertical taper easy
see?
There are 3 ways
1:correct
2:junk yard jerry rigs.
3;Totally wrong, the endless story.
not saying what is right wrong only facts,. I have 4 books of that type, all together wow. full coverage.
one way is to use shims washer on custom sized (length short) mm, for all head bolts (not stock too long)
and torque them to spec, the washers will help spread the forces. and hopefully work. while boring or honing.
out of round is very bad thing mostly
as is warpage
the see how bearing shells really work, most folks have no clue.
links, see crush here.
http://www.kingbearings.com/files/Geomet...arings.pdf
see hydrodynamic lubrication
and
the inside bearing surface is not round
the shells are not simply round inside, and if you know this, measuring with pastigauge works.
one guy didn belive me so we torgue a bearing in the main, and with the bore gauge turned it in this shell, see that needle change, it is real.
one more
torque and heat distortion is covered in all classes and books on engine building
https://theshopmag.com/features/cylinder...ion-part-3
the best engines are last honed hot and pre-torqued,
for sure racing, 1 more HP can win a race
and now, the word green (CO2 rules) means , no bypass gasses, from out of round cylinders.
Also the rings can seat in, if out of round tell how that can happen?
food for though.....hope it Sings like a bird.
http://www.fixkick.com