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Thinking again ...
We are still asking:
What did you
get done on
your Bolt today
????


The question, initially posted May 23, 2005, was:
"Whatcha do on your Bolt
this weekend?"

After 51,906,997 views, 7378 replies over 185 pages, this thread in General Truck Talk is a happening! And it's not just weekends anymore.


Now with pictures
and No BOTS.


So ...


What did you get done on your Bolt today????


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250 valve adjustment
#1435948 Tue Jan 04 2022 02:11 AM
Joined: Oct 2011
Posts: 112
7
'Bolter
What is the best way to adjust the valves on a 250 chevy. I am rebuilding the engine. I have done several 350s but not the 250

Re: 250 valve adjustment
79broncoowner #1435961 Tue Jan 04 2022 03:13 AM
Joined: Jun 2011
Posts: 4,468
E
'Bolter
Does it have ‘juice’ lifters?

Ed


'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
Re: 250 valve adjustment
79broncoowner #1435964 Tue Jan 04 2022 03:19 AM
Joined: Feb 2004
Posts: 24,297
H
Kettle Custodian (pot stirrer)
250's have hydraulic lifters, so they're adjusted just like a small block V8. Get each cylinder to top dead center on the compression stroke, gently take the slack out of the valve train by spinning the pushrod as you tighten the adjusting nut, and add an additional 3/4-1 turn of the adjusting nut after the slack is taken up. Adjust both valves, then move on to the next cylinder in the firing order. I use the companion cylinder valve adjustment method, but nobody else seems to be interested in doing it that way.
Jerry


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Re: 250 valve adjustment
79broncoowner #1436000 Tue Jan 04 2022 02:58 PM
Joined: Feb 2000
Posts: 4,445
J
'Bolter
If the lifters are dry or have been setting a long time, the feel for zero lash is a littler harder to find. There is little resistance in the lifter when not oil filled, it can be done, just takes a little more care.


Moderated by  Woogeroo 

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