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PAUL66
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JAN 22, 03:47 PM
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So I adjusted the valves 1.5 turns past zero lash and they clacked like a SOB. So the. I looked up cranes recommendations as I have roller lifters. They say 1.75 turns past zero lash. I went back and did that and it is much better but I still have some clackers. I use to adjust 350s with some little covers placed over the lifters to keep oil from splashing. I know this would be a pain since you have to take the intake off twice to take the valve covers off and then put them back, but adjusting while running is the most accurate. My question is has anybody done it on a 2.8/3.4 and if so was there any hurdles/mess? Thoughts?
Paul
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Patrick
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JAN 22, 04:50 PM
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Dennis LaGrua
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JAN 22, 06:52 PM
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Easiest and most foolproof way to adjust hydraulic lifters with the engine not running.. Loosen up all of the rocker bolts on all cylinders.. Now take out all the slack of every pushrod by rotating up and down until there is no movement. Turn engine 1/4 turn do this on all the pushrods again. Go another 1/4 turn do it again, and keep going on each 1/4 rotation until you have gone two full rotations. Now turn each rocker down 1 turn and you have achieved the perfect preload.
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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE " [This message has been edited by Dennis LaGrua (edited 01-23-2020).]
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lou_dias
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JAN 23, 08:57 AM
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If you are using roller lifters, did you also get the 5.85" length pushrods?
Also - what rockers are you using? If you are using full roller rockers then you may need the valve cover spacers I have because the clacking you hear may be from the valve covers.
If you are using GEN2 1.6 rockers then you should be good as far as clearance.
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PAUL66
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JAN 27, 08:23 PM
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| quote | Originally posted by lou_dias:
If you are using roller lifters, did you also get the 5.85" length pushrods?
Also - what rockers are you using? If you are using full roller rockers then you may need the valve cover spacers I have because the clacking you hear may be from the valve covers.
If you are using GEN2 1.6 rockers then you should be good as far as clearance. |
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Sorry I miss typed roller lifters, I meant roller rockers and they are stock ratio so stock pushrods as well
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PAUL66
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JAN 29, 11:02 PM
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| quote | Originally posted by Dennis LaGrua:
Easiest and most foolproof way to adjust hydraulic lifters with the engine not running.. Loosen up all of the rocker bolts on all cylinders.. Now take out all the slack of every pushrod by rotating up and down until there is no movement. Turn engine 1/4 turn do this on all the pushrods again. Go another 1/4 turn do it again, and keep going on each 1/4 rotation until you have gone two full rotations. Now turn each rocker down 1 turn and you have achieved the perfect preload.
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That’s awesome, never thought of doing it that way but it makes perfect since. Thanks for the reply.
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PAUL66
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JAN 29, 11:05 PM
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I have done it both ways. My car doesn’t have the throttle body heater pipes on it and I find it is easier just to get it out of the way. Fighting the wiring harnesses laying on top of the upper bc bolts is just a pia to me. Thanks for the info though.
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