Valve clearance

[dvogtvpe]

one thing also to consider is the change in the intake opening and closing position. anyone who has spent time with a dial indicator and a degree wheel can understand the affects of 2 degrees of timing in how an engine runs. We often close up the exhaust lash in stockers to help with torque.
increasing the intake lash would also have and adverse affect on the split overlap at tdc. since its an opposed engine I would run the same lash on each side. loose lash can also hammer on the lifters and the cam. everything wears , the looser it is the more it wears . if you have it apart yet I'd replace the valve

[Sam Mac]

OK we now have a whole new situation to deal with. Just my 2 cents but the rebuilder needs to replace the valve that has too much clearance. I'm sure others with more knowledge of the KT series will chime in.

[Shrewcub]

Originally Posted by Sam Mac

OK we now have a whole new situation to deal with. Just my 2 cents but the rebuilder needs to replace the valve that has too much clearance. I'm sure others with more knowledge of the KT series will chime in.

I don't have the KT experience per say, just ASE mastertech experience and thats like at least 3 times the legal limit. I agree with Sam!

It's not a SBC.

And Sam, my 2072 diesel repower is going to be put on hold for now. I did talk to A1biofuel. They have some 1 1/8" shaft Chinese Vtwins coming in about now. I was going to wait for them to order. But since I found out last Thursday my Dad is selling the family farm, I am going to patch up the M20 while its out and put it back in for now. I'll do the repower when I have a nice new shop

[J-Mech]

Originally Posted by ol'George

With .020 clearance it will be slightly noisy.
.020 is really not all that much as some of the old chevy solid lifter engines ran as much as .030 with no ill effects......
.....Best to run it till it needs to come apart for rings/overhaul.

No.
I strongly disagree.

Originally Posted by ol'George

The valves on those twins have no easy adjustment.
To decrease clearance you have to seat the valve deeper into the head, or replace the valve.
To increase the clearance, the valve stems need to be ground.

This, however, is correct!

Originally Posted by dvogtvpe

one thing also to consider is the change in the intake opening and closing position. anyone who has spent time with a dial indicator and a degree wheel can understand the affects of 2 degrees of timing in how an engine runs. We often close up the exhaust lash in stockers to help with torque.
increasing the intake lash would also have and adverse affect on the split overlap at tdc. since its an opposed engine I would run the same lash on each side. loose lash can also hammer on the lifters and the cam. everything wears , the looser it is the more it wears . if you have it apart yet I'd replace the valve

Right answer.

Originally Posted by Sam Mac

OK we now have a whole new situation to deal with. Just my 2 cents but the rebuilder needs to replace the valve that has too much clearance.

Solution!

[Shrewcub]

Listen to J-Mech! He knows his tractors!!!

[Thomas782]

thanks will go back to re-builder and either re-seat original valve or replace valve. can someone post correct part#for intake valve? I will have more info. when I can speak with shop.

[J-Mech]

Originally Posted by Thomas782

thanks will go back to re-builder and either re-seat original valve or replace valve. can someone post correct part#for intake valve? I will have more info. when I can speak with shop.

They goofed it. They should supply the valve.