I am working on a 54 TF that has a TD engine that smokes blue from the exhaust due to worn rings.
Compression is as follows:Cyl.1-100 lbs,Cyl.2-125 lbs,cyl.3-125 lbs.and Cyl.4-125 lbs.Upon a wet test,all cylinders read 150 lbs.
I am going to replace the rings,assuming cylinders are ok.
According to the manual,pistons come out through the bottom and head does not have to be removed.
Upon refitting,will I need a special ring compressor?as the manual does not provide info on this step.If so,where can I buy one?
- Steve Simmons
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1949 TC9849 EXU / XPAG 10507
You can fix one problem (the rings), but there are so many associated parts that still may be weak. As noted above: the head - what of the valve seals and guides? A quick lapping-in of valves (or valve job if necessary) will go a long way.
But you don't mention bearings, main or rods. If the engine sat for a time, the bearings will show acid-tracks from the old oil, and should be replaced. And what about the oil pump? What about the cam and followers? Timing chain and gears? Brass core plugs? And if you have it apart, have it balanced!
I realize that this is creeping - one thing really leads to another: the hip bone is connected to the knee bone, the knee bone is connected to the shin bone, etc. But if you want an engine that will last, do it right, and look at the larger picture. If someone came into my shop and wanted JUST rings, I would look at all those other parts whether he asked me to or not, and I bet I would find things that would compromise his engine in a matter of perhaps ten thousand miles. If you just do rings you are doubling or tripling stress on the bottom end, for instance.
By the way, I have had total satisfaction with Deves rings, much better than the usual Hastings which did not seat in two engines I did. I now only use Deves.