opinions on a valve adjustment tecnique

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opinions on a valve adjustment tecnique

Postby rockmike » Wed Feb 20, 2013 11:19 am

Hey guys was just lookin for some opinions on what I have done and how im doin it.I dont have that gear locking pin behind the IP on my rig,PO apparantly broke that and removed it?

(This is a new head and valve train im installing)

What I did:I started on #1 cylinder and brought the intake valve down,were its pretty much has compressed the valve spring on the intake valve.At this point im assuming the exhaust valve would be on the back side(the round part of the cam lobe)so I adjust the gap on the exhaust vlave at this point.

Then I rotate the engine (via the alt.pulley bolt) untill the exhaust valve has compressed its spring,then adjust the intake on that same hole...then move to #2 cylinder and on down the line.

Do ya'll think this is a good,accurate way of setting the valve stem gaps?? this should be a repeatable way of doing this?

To double check my settings,RCC suggested I use the companion method of setting the valves.This is new to me.

The companion method:I put a dial indicator on the #6 exhaust valve rocker top rotate the engine Via the alt pulley bolt untill I see the intake valve coming up,meanwhile watching the dial indicator.As soon as I see the dial indicator move the exhaust valve going down I STOP! and adjust the #1 intake and exhaust valve and move down the oppopriet valves,then se the dial indictor on the #1 exhaust vlave and fallow the same procedure then adjust the second stage of valves.
When I did this I found(I should wrote this down cause I dont recall exactly wich one where out of spec)but I think the #4 or #3 cylinder useing the companion method was out of spec,comparing to the 1st technique I used.

So either my first technique is wrong! or maybe im being to exact with the dial indicator on the 2nd technique? should I let that exhaust valve come down more to insure im off the lift lobe?

Maybe im just being anal lol...I just want it RIGHT and a way of doing this that repeatable so I can keep track of how much my valve stems and rockers are wearing...I guess im just comcerned about putting old rockers on new valves and would like to keep track of the wear that going on in there.

Thanks so much for your help and opinions on this.
93 d350 extra cab 5 speed dually.

Mods: hx35,rotated fuel pin,bosch 190 inj.,BHAF with smooth intake tube,3200 rpm spring,M&H dynamic timing spacer,isspro EGT and boost gauge,Auto meter tach, fuel press. gauge.Diamond eye 4" exhaust,Sno Stage 2 W/M kit.

Real trucks dont use spark plugs!
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Re: opinions on a valve adjustment tecnique

Postby dazedandconfused » Wed Feb 20, 2013 11:32 am

Big Andy
1983 Dodge D150 that has been repowered with a 93 Cummins/518 running gear AKA The Ugly Duck! I would much rather build them then buy them.[
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Re: opinions on a valve adjustment tecnique

Postby RCCUMMINS89 » Wed Feb 20, 2013 12:15 pm

At the very bottom of that page is what I use.
89 RC on shortened 92 diesel frame - NV4500 w/dual disc/4.10s on 37s. - Self built pump, "hot screw", lots of timing, True high volume low pressure lift pump, 62fmw/68/.7gated, 77lpm SAC Inj., Studs/O-rings,- 423/1220 Mustang - 11/16/2013 http://www.TheHungryDiesel.com full line dealer, if you don't see it please ask.
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Re: opinions on a valve adjustment tecnique

Postby PToombs » Wed Feb 20, 2013 6:41 pm

Companion method. I have the balancer marked for TDC, so I just set it, make sure it's #1 that's up and do them. Turn it 1 revolution and do the rest. That's the way most of the books I've read say to do it so that's good enough for me. ;)
pete

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Re: opinions on a valve adjustment tecnique

Postby DodgeFreak » Fri Feb 22, 2013 6:11 am

I've done companion method before and I've Rolled each cyl to compression stroke and done one cyl at a time.
92 D350 Cab and Chassis. Auto stock, wiring gremlins. 330k miles
92 W250 Ext cab rotted completely out. Auto, pump maxed, 215 ppump nozzles, Denny T2 pin.
85 D350 single wheel, converted to cummins, getrag, turned up 2 turns and afc screw flush.
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Re: opinions on a valve adjustment tecnique

Postby Tacoclaw » Fri Feb 22, 2013 6:29 am

I use companion method everytime anymore, I marked my balancer back when I had my timing cover off and just always make sure it goes back on the same way.

I don't even have to look it up anymore, roll it to TDC and whichever end has a valve down start on the opposite. Alternate valves as you go back(or forward) starting with intake, roll the engine 360*, and do it again, hitting the valves you missed.
1990 W250 4x4
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