Stretch
Well-Known Member
I know it looks dodgy but my patented spare parts filing system works best for me!
I even found that wayward third bearing cap for the engine (though it is a bit too big for the filing system)
I still haven't found the new crankshaft rear seal - but - it was time to check the new crankshaft
Put the new bearing shells in the bottom of the engine with a bit of assembly oil
Placed the new crankshaft carefully on the shells and turned it so there weren't any lubrication holes in the way for the bearing caps
Mmmmmm plastigauge
(For those that don't know - bits of plastic that get squashed)
Don't use whole lengths if you don't have to - I cut each strip into three to get the results shown below
This (rather expensive) kit (from Frosts) has two types of grease that don't like to mix. Spread one on the journal and the other on the shell in the cap
Place bits of plastigauge on the shells so they don't fall in the lubrication gap or any lubrication holes!
Carefully fit the caps (making sure the plastigauge doesn't fall off)
Tighten the caps by hand and a bit tighter with a ratchet and then torque to spec
Do not turn the crank - you'll bugger up the plastigauge
Remove the caps and see that you've squashed the plastigauge (and you can never use it again boo hoo)
Use supplied gauge to see the measurement
It takes a bit of time to realise squashed flat and "big" is actually small
(think about it!)
Scrape off the plastigauge when done with your finger nail.
The clearance between the new shells and the new crank are unsurprisingly in spec - so that's good.
######
Next check - crankshaft end float
Thrust washers fit around the middle journal
Use a bit of grease / oil to hold them in place (but not too much you don't want to "pad it out" too much" - you want to measure the clearance in that direction)
Using assembly oil on the new shells
Fit end caps and tighten by hand
Spin the crank to make sure it moves before tightening!
After re-torquing the end caps - make sure the crank will turn again
(if the crank is stuck you need to work out why)
Attaching a magnetic stand and DTI on on the end of the block you can push the crank along the longitudinal axis to measure the end float
(again - new crank and new thrust washers gave the correct result - still good to know)
I even found that wayward third bearing cap for the engine (though it is a bit too big for the filing system)
I still haven't found the new crankshaft rear seal - but - it was time to check the new crankshaft
Put the new bearing shells in the bottom of the engine with a bit of assembly oil
Placed the new crankshaft carefully on the shells and turned it so there weren't any lubrication holes in the way for the bearing caps
Mmmmmm plastigauge
(For those that don't know - bits of plastic that get squashed)
Don't use whole lengths if you don't have to - I cut each strip into three to get the results shown below
This (rather expensive) kit (from Frosts) has two types of grease that don't like to mix. Spread one on the journal and the other on the shell in the cap
Place bits of plastigauge on the shells so they don't fall in the lubrication gap or any lubrication holes!
Carefully fit the caps (making sure the plastigauge doesn't fall off)
Tighten the caps by hand and a bit tighter with a ratchet and then torque to spec
Do not turn the crank - you'll bugger up the plastigauge
Remove the caps and see that you've squashed the plastigauge (and you can never use it again boo hoo)
Use supplied gauge to see the measurement
It takes a bit of time to realise squashed flat and "big" is actually small
(think about it!)
Scrape off the plastigauge when done with your finger nail.
The clearance between the new shells and the new crank are unsurprisingly in spec - so that's good.
######
Next check - crankshaft end float
Thrust washers fit around the middle journal
Use a bit of grease / oil to hold them in place (but not too much you don't want to "pad it out" too much" - you want to measure the clearance in that direction)
Using assembly oil on the new shells
Fit end caps and tighten by hand
Spin the crank to make sure it moves before tightening!
After re-torquing the end caps - make sure the crank will turn again
(if the crank is stuck you need to work out why)
Attaching a magnetic stand and DTI on on the end of the block you can push the crank along the longitudinal axis to measure the end float
(again - new crank and new thrust washers gave the correct result - still good to know)