Mike Brinker wrote:
>
> Hello fellow enthusiasts!
>
> I am rebuilding a 73 TR6 engine. I have had to purchase a new
> replacement cam which I believe is original stock. It is not a modified
> cam (performance cam). I have installed the cam and was putting on the
> keeper plate with the two bolts. Before tightening the bolts down, the
> cam was able to move freely. Once I tighten the bolts down, the cam is
> very difficult to move. I put on the cam timming chain sprocket to move
> the cam and found it hard to turn. I was told by a reputable source that
> the cam should move freely and the bolts to the keeper plate should be
> very tight. How many lbs? I am using the original keeper plate which
> shows some signs of wear where it rubs against the cam. I am using the
> bently book for assembly instructions and find no mention or any helpful
> hints regarding the cam keeper plate situation. Any suggestions? I
> really need to hear from someone who has rebuilt there engine and or
> knows what they are talking about.
> After I get past this small bump, I will be preparing to time the cam.
> Any elaborations would be helpful.
>
> Thanks for your help in advance.............Mike (S.E. Michigan)
Mike,
The bolts should be tight and the cam should turn freely. You should
not feel any resistance when turning the cam. I could not find cam
keeper bolt torques, but you can use the same as for other engine bolts
of the same diameter. Make sure the cam is the same length as the one
you took out. The stock cam that I just took out of my engine, measures
22 inches from the rear of the cam to the center of the cam keeper
groove. Good luck.
Kevin Brown '74 TR6 '76 TR6 '71 MGB '74 MGBGT '89 MR2
Odessa, MO
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