How to adjust lifters? - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

aaberg · 07-10-2021, 04:02 AM

On old chevys you adjust hydralic lifters by one turn. But how to adjust hydralics lifters on newer engines, like mine L99? I have installed a new COMP Cams MK189-301-13 kit but nothing written how to adjust the rocker arms/lifters!

morepowerjoe · 07-10-2021, 04:28 AM

As far as I know you adjust them the same way. Zero lash and then 1/4 turn to a full turn. Everybody will tell you something different but I always do a 1/4 turn because if you go to far you could hang a valve open and you don't want that.

Kiwi_Camaro_2010 · 07-10-2021, 04:33 AM

No adjustment available on stock rockers, if you want to adjust preload use custom length pushrods to do so.

aaberg · 07-10-2021, 04:35 AM

I have installed this kit https://www.summitracing.com/parts/c...01-13#overview

morepowerjoe · 07-10-2021, 04:39 AM

Yeah those look like non adjustable rockers so you should be fine just torqueing them down.

aaberg · 07-10-2021, 05:25 AM

In some videos they pull down 22 lb/ft (after zero lash).

G8One2 · 07-10-2021, 07:20 AM

Preload is engineering into the valvetrain. There is no adjustment aside from getting a pushrod length checking tool, and buying pushrods with the amount of preload desired. These are not adjustable rockers like they had in the older chevy 350 engines.

gunchamp · 07-10-2021, 01:50 PM

Good info here. These arent like odler small blocks. The ls factory rocker will just torque down to spec once the vavle is in the closed position.

Black_SS10 · 07-10-2021, 05:16 PM

The LS platform uses the GM zero net lash system. There is no adjustment. Preload is based on pushrod length and/or the type of lifter. 22ftlbs and done.

aaberg · 07-11-2021, 12:01 AM

So correct is to set to zero lash and then turn to 22 lbft? (I'm using the pushrods in the kit). Nothing more?

morepowerjoe · 07-11-2021, 03:54 AM

Quote:

Originally Posted by aaberg

So correct is to set to zero lash and then turn to 22 lbft? (I'm using the pushrods in the kit). Nothing more?

Correct. As long as you have the pushrods that came in the kit.

aaberg · 07-11-2021, 04:01 AM

Thank you for answers. Sometimes things are easier then it looks like!

morepowerjoe · 07-11-2021, 04:03 AM

No problem. Just let us know if you need anything.

07-10-2021, 04:02 AM	#1
aaberg Drives: 1997 30th conv & 2012 45th conv Join Date: Jul 2017 Location: Sweden Posts: 122 View My Garage	How to adjust lifters? On old chevys you adjust hydralic lifters by one turn. But how to adjust hydralics lifters on newer engines, like mine L99? I have installed a new COMP Cams MK189-301-13 kit but nothing written how to adjust the rocker arms/lifters!

07-10-2021, 04:28 AM	#2
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,109	As far as I know you adjust them the same way. Zero lash and then 1/4 turn to a full turn. Everybody will tell you something different but I always do a 1/4 turn because if you go to far you could hang a valve open and you don't want that. __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817

07-10-2021, 04:33 AM	#3
Kiwi_Camaro_2010 Drives: Camaro 2SS/RS 2010 L99 Join Date: Jul 2012 Location: New Zealand Posts: 173 View My Garage	No adjustment available on stock rockers, if you want to adjust preload use custom length pushrods to do so. __________________ Camaro 2SS/RS 2010 / L99 / Whipple SC /Dynatech Headers & Catts (gutted), ID 850 injectors, ZL1 fuel pump +BAP & ADM pump controller, ZR1 3Bar MAP, Dual Elite Catch Cans, 91 octane ,Eibach sway bar kit , Driveshaft loop, oil cooler delete, ADM dual gauges (AFR/Boost) LC1 wideband controller, D/D, ARP stud kit ,Callies forged slayer crank 3.622", callies ultra rods, wiseco forged pistons, L99-LS3, rollmaster double row steel timing set & comps cam timing cover,blower cam 630/660 lift,3/8 pushrods, pac gear 8deg, yella terra ultra lites. LS9 head gaskets. Texas speed custom oil pump. Asm by me.

07-10-2021, 04:39 AM	#5
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,109	Yeah those look like non adjustable rockers so you should be fine just torqueing them down. __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817

07-10-2021, 01:50 PM	#8
gunchamp Drives: 15 Camaro SS Join Date: Oct 2018 Location: Mountains of central PA Posts: 1,442	Good info here. These arent like odler small blocks. The ls factory rocker will just torque down to spec once the vavle is in the closed position. __________________ 15 Camaro SS- GPI max top end, ESS Vortech V3 9psi, ID 1050s, ZL1 pump, JMS bap, Long tubes, Corsa extreme, Circle D pro 5C, 391 rear, DSS carbon drive shaft, poly cradle bushings, tuned by Ted Jannetty and much much more

07-10-2021, 04:35 AM	#4
aaberg Drives: 1997 30th conv & 2012 45th conv Join Date: Jul 2017 Location: Sweden Posts: 122 View My Garage	I have installed this kit https://www.summitracing.com/parts/c...01-13#overview

07-10-2021, 05:25 AM	#6
aaberg Drives: 1997 30th conv & 2012 45th conv Join Date: Jul 2017 Location: Sweden Posts: 122 View My Garage	In some videos they pull down 22 lb/ft (after zero lash).

07-10-2021, 07:20 AM	#7
G8One2 Drives: 2014 Camaro 2SS Join Date: Feb 2015 Location: Metro Detroit Posts: 492	Preload is engineering into the valvetrain. There is no adjustment aside from getting a pushrod length checking tool, and buying pushrods with the amount of preload desired. These are not adjustable rockers like they had in the older chevy 350 engines.

07-10-2021, 05:16 PM	#9
Black_SS10 SomeguyK Drives: 2010 Black 2SS/RS Join Date: Nov 2014 Location: FL Posts: 1,947	The LS platform uses the GM zero net lash system. There is no adjustment. Preload is based on pushrod length and/or the type of lifter. 22ftlbs and done. __________________ TMS 427, Dart iron Block, Forged assembly, Frankenstien heads, AGP TT 62/62 BB turbo's, AGP/Fore triple fuel system, Tilton clutch, Holley 1 7/8 shorties, Technostalgia tail lights,Oracle, Aeroforce, MGW shifter,Flowmaster, Pegasus subframe bushings,BMR trailing & toe arms,Z28 UCA bushings,Zl1 rear sway bar,Prothane,BMR,Goodridge brake lines,Ridetech HQ coilovers,3.91,Trutrac,billet caps,DSS axles,HE offest,built TR6060,1LE diffuser,Havoc spoiler,SSclones,20in MRR 017, Pirelli P Zero, Nitto NT555RII More to come.

07-11-2021, 12:01 AM	#10
aaberg Drives: 1997 30th conv & 2012 45th conv Join Date: Jul 2017 Location: Sweden Posts: 122 View My Garage	So correct is to set to zero lash and then turn to 22 lbft? (I'm using the pushrods in the kit). Nothing more?

07-11-2021, 04:01 AM	#12
aaberg Drives: 1997 30th conv & 2012 45th conv Join Date: Jul 2017 Location: Sweden Posts: 122 View My Garage	Thank you for answers. Sometimes things are easier then it looks like!

07-11-2021, 04:03 AM	#13
morepowerjoe Drives: 2012 Chevrolet Camaro l99 Join Date: Aug 2020 Location: Austin, TX Posts: 2,109	No problem. Just let us know if you need anything. __________________ DSS FX Forged Pistons, Eagle ESP L19 Forged Rods, ARP Head and Main Studs, TSP PRC 260 CNC Ported Heads milled .030, Cometic .040 Head Gaskets, GPI SS3 VVT Camshaft, GM Performance Racing Lifters, CHE Trunnions , Molly Pushrods, Melling 10355HV Oil Pump, Cold Air Inductions CAI, Fast LSXR Intake Manifold, Nick Williams 103 TB, TSP 1 7/8" Longtubes with 3" TSP Exhaust, ZL1 Fuel Pump, Mishimoto Radiator, Mishimoto Oil Cooler, Tru Cool 40k Tranny Cooler, 3600 Circle D Converter, Fluid Dynamics Balancer Build Thread https://www.camaro5.com/forums/showthread.php?t=609817