a65l
Posts: 1478
Joined: 12/7/2003
From: va veach,
VA, USA
Status: offline
|
I just re-bearing'd my older 150. Ran like a champ forever, but started to get noisy here recently so apart it came. Still had good compression and the cylinder looked fine, so I just put bearings in 'er. I've reassembled teh engine, checked valve clearances, and there's a distinct "click" as the valves open and close. Hapens on both valves. I can't feel any "catch" when I turn the engine over, and with my fingers on teh valve rockers I can't feel it. I'm sure everything is together, and just in case I wasn't, I dissasembled again and re-checked. Timing is as spot on as I can get it, and the valves aren't contacting the piston, they're moving correctly. The only thing I can think of is that the cam, which has two spacer washers on both sides of the shaft, has too much end play and is moving back and forth. The washers are there, but there's still some movement. This isn't the first 4 stroker I've taken apart and reassembled, but this is the first time I've run across this problem.
If it helps, the engine is apparently an older model, as the cam gear is actually a machined part of the crankshaft and not a seperate piece.
Oh I forgot to mention, the only time you hear the "click" is when the valve train is fully assembled. I can't seem to make it happen with just finger pressure on the pushrods....
Thanks in advance,
Andy
< Message edited by a65l -- 2/13/2006 1:51:54 AM >
_____________________________
In God I trust.
All others pay cash.
|
Printable Version
All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Glow Engines >> "clicking" Saito 150 
"clicking" Saito 150 - 
