thrust washers & cam

[69tr]

I installed the crankshaft today and I am having trouble with the thrust washers. I have about .082 end play in the crank without the thrust washers. The standard thrust washer is .090. With the bearing caps off I can put half the thrust washer in the block but when I put the cap on there is not enough room to install the other half of the thrust washer. I don't have the washers that were taken out when I removed the crank but I know they were there and there was some end play in the crank. I don't know how much because I did not have a means to check it at that time.

I also installed the cam and when I bolted the cam lo-cater down the cam would not turn. The cam turned freely before I tore it down.

Any suggestions on these things would be greatly appreciated.

Pete

 

[Gliderman8]

Give Scott Helms a call... he makes custom size thrust washers.

 

[TR3driver]

With the bearing caps off I can put half the thrust washer in the block but when I put the cap on there is not enough room to install the other half of the thrust washer.

This statement isn't making any sense to me. On a TR6, both pieces go into the cylinder block, before you install the cap. And trying to measure the end float before installing the thrust washer pieces doesn't make any sense, because the thrusts sit in a pocket. With them out, the crank will hit elsewhere before it hits where the washers sit.

 

[poolboy]

Yes to what Randall said. And the standard TW's are .092. That.002 difference between actual and what you measured is important when you're shooting for an end float of .004 to .006 in Haynes or.006 to .008 in Bentley

Put both of what you have in and take an accurate measurement of the end float.
If it's out of the range of your choice, remove and measure the TW's and get one to get the end float in spec. Always put the thicker one in the rear.

Was that the same cam ?

 

[69tr]

Thanks. I was under the impression that one of the set went in the block and the other went behind the bearing cap. It makes sense now.

I just went out and took a better measurement of the new thrust washers. They do measure .092. They would still not fit in the recess in the block. I did not have time to do any other checking. I will get into it later today.

Yes, it is the same cam and locating plate.

Thanks for the help, Pete

 

[poolboy]

Two "standard" size TW's should definitly be able to go back in.
One one each side of the journal. You may have to shift the crankshaft back and forth to make room for the other one, but 2 came out and 2 should go back in. The space is there for 2.
Since you were confused about the placement, I hope you have them in the right direction with respect to the Oil Grooves, right ?

 

[TR3driver]

What he said. Put in one washer, then pry the crank hard against it, and put in the other one. No way it can't fit, unless someone has welded up either the crank or the block and not machined it back to size.

Oil grooves go against the crank cheeks.

 

[69tr]

Thanks again. I went in the shop this afternoon and figured it out. I put the brass side with the oil grooves toward the rotating crank. When I got the washers in I checked the end play and had .050. The book calls for .060-.080. I am going to leave well enough alone.

About the cam. The machine shop replaced all the plugs. Do you think that maybe he got the one at the end of the cam in a little too far? If so, can I take something and tap it back out a little bit?