old 250 cid

[Florida_mariner]

I have recently aquired an old chevy 250 cid straight 6 eng cheap and I have heard these can be great boat engines..I have been trying to fix it up and purchased a re-man head since the orig was trashed...I'm not sure about the valve adjustment when the head goes back on

anybody have any pointers on getting the adjustment right ?

tia

[yokebutt]

Tia,

If my memory serves, that engine has push-rods and over-head valves. All you need to do is adjust the play in the system at the rocker arms. The adjuster-screw should be obvious, and you can probably find the specs at your library.

Yoke.

[Florida_mariner]

It is push rods and OHV...I've been told it's a '67 chevy non integral head type eng...I have heard about 3 or four different methods of valve adjustment I was trying to get a concensus

thanks

Mike

[yokebutt]

Mike,

Sorry, I misunderstood your question, yes, there are a few different methods, mostly to speed up the process. If you're a bit uncertain, and want to make damned sure you don't scew anything up, then adjust the valves for one cylinder at a time.

Simple and almost fool-proof method: (not the fastest) Adjust the valves for one cylinder at a time. put the first cylinder at TDC between intake and power-stroke, look inside the distributor and make sure it is pointing at the terminal for cylinder #1 and check the timing-marks, adjust it's valves, then turn the engine to put the next cylinder at TDC and so on following the firing-order. (follow the leads from the distributor)

Adjust the valves using a feeler-gauge, turn the screw until the gauge slides with a slight bit of friction, tighten the lock-nut and re-check the friction.

Yoke.

[Florida_mariner]

thanks yoke...that sounds good...I was not wanting to try to do this with the eng running...taking extra time to go this route works for me...appreciate the advice