old 250 cid

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

 

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.

 

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

 

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.

 

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