Building a 4age - Crank

[Jason]

As promised, next step by tuesday http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif

What you will need:

Your new bottom end bearing
Engine Oil
WD40 or somthing simalar
Scraper
Torque Wrench (14mm)


Time : 1hr

First whash everything down with some wd40 and get of all the built up crap out. Wash down your new bearing aswell. And put the end cap bolts in some petrol to soak.

[Jason]

After you have cleaned out the crank cap install the new bearing, line up the claw with the resess. Then snap it in with your finger. Make sure the sides are flush on both sides.

The ones with the grove and hole are installed into the block. The same method is aplied for both

[Jason]

Then oil both of the surfaces with some engine oil.

Next install the lower thrust washers, these have no raised peice. The oil groves face the outside. Gently place them.

With the bearing now in place, carefully place the crank into the block (Make sure the bearing surfaces are clean) and with out nocking the washers out of place, if they slide around just realine them

[Jason]

Now putting on the crank caps or lower end caps... or what eva http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif

Each has an arrow and a number, number 1 goes to the front (motor facing front, or back is wear gear box goes)

They may not go in smoothly, but a very gental tap with a hammer will do, once they are all in its time to get you bolts out of the petrol.

Oil up the threads and underneith the heads, this will help with tighening. Also they may not go in easly becuse of the cap being missalined. DO NOT FORCE THEM.

If they dont do in, let them rest and wiggle the cap around until the bolt EASILY screws in. Tighten all the bolts up finger tight.

[Jason]

Now for the torquing.

You will need to follow a certain pattern for tightening up the bolts.

The torque setting is 44 Feet-Pounds.

The 1st cap to be tightened is the middled, then work your way out, going from cap 3

to 2, 4, 1, 5. Also go in a zigzag across the bolts Pics may help http://www.ae86drivingclub.com.au/forums/emoticons/crazy.gif

[Jason]

Now the crank should turn smoothly, heres one i prepeared earlier http://www.ae86drivingclub.com.au/forums/emoticons/happy.gif

There we go too easy. Enjoy



J

[Jason]

note: crank will start to turn more easily once more oil gets into the oil gallerys

[mattysshop]

what about checking the clearences with some plastigague? http://www.ae86drivingclub.com.au/forums/emoticons/smile.gif just kidding.. if you don't have to grind the crank shouldn't worry bout it on a streeter.. but i would if your putting a bit of money into it http://www.ae86drivingclub.com.au/forums/emoticons/smile.gif

Matty

[mattysshop]

nice work on the pics and write ups, good to see someone doing this sorta stuff http://www.ae86drivingclub.com.au/forums/emoticons/smile.gif

[Jason]

crank was checked at the builders http://www.ae86drivingclub.com.au/forums/emoticons/wink.gif

[slydar]

crank was checked at the builders http://www.ae86drivingclub.com.au/forums/emoticons/wink.gif[/b]

if it was checked and it didnt require any linishing/machining and the use of oversize bearings then youre right the info youve give here is sound and will work.

the if the crank needed linishing/grinding and therefore needed oversize bearings, then matty is right you need to check the clearance to make sure theyre right.

[Jason]

nope crank was perfect along with everything else, all std bearings. the next one will be when i get paid, bearings and gaskets arnt cheap http://www.ae86drivingclub.com.au/forums/emoticons/sad.gif

[ninja_86]

maybe its just me, but for the extra 20 min it takes to check the bearing clearances with plastigauge, its worth it just in case one of the bearings isnt right or the knob that checked the crank fucked up........20 minutes while putting it together is way better than putting the whole motor in just to get it running and find out one of the bearings isnt right, and then to have to pull it apart again........

[SprinterTRD]

Probably should check crank end float as well

[ninja_86]

Probably should check crank end float as well[/b]

agreed........

[Jason]

i have nfi how to do that, so why dont you go ahead and write an article...

[SprinterTRD]

Jason,

You need a dial guage to check end float. simply fit a known thrust washer , bolt crank in like you said.

Mount a dial guage on the front of the engine block with the measuring bit of the guage touching the front end of the crank where the balencer bolt screws in to.

Push the crank towards the flywheel end of the engine.

Zero the dial guage.

Push the crank towards the front of the block.

The distance measured on the dial guage is the thrust movement. If its within specs great, if not add or subtract the error from the installed thrust washer thickness and then get one with the correct dimention.

[bahnugget]

finish this build already!! http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif

[Jason]

hmmm i forgot to do one on installing rings and valves. http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif

i got 1 more ring to put int (broke and oil ring) and one more valve (lost a retainer) so ill take pics and ill get some build pics, shouldn;t be to long

[terryo]

a good simple article, but..............
spreading oil all over the mating surfaces of the main caps is not a good idea. it does not take much oil down the thread hole to get a hydraulic lock. then the block cracks or the torque is wrong.
All you need is a smear of oil on the threads of the main cap bolts.

[Jason]

most of these pics are just mock up for the pics as its kinda hard to work with a camera in my hand. In this case i had my oil gun http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif

[ae86 drifter]

why dont these pics work

[Jason]

when the website was hacked alot of threads lost there pictures, if you want pic pm me, ill be uploading these agin when i can be bothered http://www.ae86drivingclub.com.au/forums/emoticons/tongue.gif

[rthy]

the pics arnt working for me

[Jason]

*starts looking for all my threads pics*

it will also be after the month cuze im capped atm http://www.ae86drivingclub.com.au/forums/emoticons/tdn.gif

and when i have a bit more free time ill organise it into a big thread with links and shit might even right up some more on mouting the sc14 and bigger TB and some other stuff