2tg crankshaft issues

[Noof]

Hi,
Putting together an old 2tg as a practice build before attempting the real thing. Up to the bit where I tighten the bearing caps and try to get the crankshaft to turn as it says in my manual. When I tighten the bearing caps I cant spin the crankshaft at all. I have a torque wrench etc so all the bolts should be to the required spec. Not sure why the crankshaft is tough to turn? Any ideas from the master engine builders for a novice?
Cheers
Noof

[Dan_k36]

Got the caps and shells around the right way?

[Noof]

Yep, Only thing I can think of is I have two crankshafts and one could have been machined and require larger bearings. I could have the unmachined crank with bearings to suit the machined crank?
That would cause me issues correct?
Is there any easy way to tell? measure the bearings? Can someone tell me what standard thickness is?or whether I am completely barking up the wrong tree?

It seems to explain my little issue though.

[TERRA Operative]

Might be worth getting some plastigauge to check clearances between the two cranks.

[allencr]

There will be numbers on the bearings & stamped on the crank if OS, .25 & .5 & .75 & 1.0 metric, .010 & .020 & .030 & .040 imperial.
Does it happen with all 5 or 1 only?
Don't bother with torque for now.

[Noof]

Bearing cases have .25mm on them.
Guess the crank could be original unground?
Does anyone know the unground diameter of the 2tg crank?
Cheers

[tojo]

andrewzuku has some mean scans on his site .- 2t repairmanuals . Link on the bottom of his posts
https://toymods.org.au/forums/showth...t=767&page=781

[Noof]

Thanks for the info,
Will check it out when I get a chance