Valves tighten with age?

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Valves tighten with age? #705841 03/13/06 07:38 AM

Joined: Jul 2002

Posts: 1,674

Placerville, CA

stock87

Body Damage is Cool

Just adjusted the valves on a friend's 89 2WD carbie that has pretty clearly seen little to no maintenance over it's lifespan (278k), and all the valves but one were WAY too tight. Is this normal? #2 exhaust was just tight enough so that the cyl had low compression and wouldn't fire at idle.

My Truck: 1987 XtraCab DLX 22R 4WD 5 Speed Manual
--------------------
"Speed has never killed anyone. Suddenly becoming stationary, that's what gets you." -Jeremy Clarkson

Re: Valves tighten with age? [Re: stock87] #705842 03/13/06 07:56 AM

Joined: Nov 2004

Posts: 12

Manson

Need a Spot

Yes this is normal and is why they are supposed to be adjusted periodically.

Re: Valves tighten with age? [Re: Manson] #705843 03/13/06 05:44 PM

Joined: Aug 2002

Posts: 2,101

Lacey, WA

kyle-22r

Body Damage is Cool

common sense would say that they'd loosen as the adjusters wear, at least to me <img src="/forums/images/graemlins/confused.gif" alt="" />

'79 sport 4x4 longbed <img src="/forums/images/graemlins/smile.gif" alt="" />
20/22R hybrid with EB's OS valves, 268c cam, offy intake, weber 32/36, thorley header, 5 speed swap, 34" LTBs, downey 3" springs, marlin hysteer, 4.88s and locked

'91 4x4 shortbed
22R-E, W56, the dd!

Re: Valves tighten with age? [Re: kyle-22r] #705844 03/13/06 08:47 PM

Joined: Oct 2003

Posts: 312

Pac Northwest

MrWiretender Offline

Mudrunner

The wear is on the valve seat as the valve sinks deeper into the head thus closing the lash gap.

'87 22RE

Re: Valves tighten with age? [Re: MrWiretender] #705845 03/13/06 11:42 PM

Joined: Apr 2004

Posts: 2,010

Virginia Beach, VA

87Toy4x4

Body Damage is Cool

after my street rv head got broken in about 2k later i adjusted the valves for the third time. a lot of them were wayyy too tight, and some were really loose i was a little confused about that. now it sounds like they are loose again, ugh. ive been putting off adjusting my valves for a couple weeks.

87 22R PU, 2? body lift, 33? BFG muds, 4.88's, F&R Lock-Rights, Rancho Shocks, EB's Street RV Head w/ 268 Cam, LCE Header, 2" to 2 1/4" exhaust, Flowmaster 50 series, Magnaflow high flow cat, complete Herculined SR5 interior, V6 BB, MC, and calipers.

Re: Valves tighten with age? [Re: 87Toy4x4] #705846 03/14/06 12:49 AM

Joined: Jan 2006

Posts: 188

Brooklyn New York

ToYPU

Wheeler

good so ill leave mine loose and theyll be in spec in about 50k miles <img src="/forums/images/graemlins/notooth.gif" alt="" /> <img src="/forums/images/graemlins/notooth.gif" alt="" />

kevin <img src="/forums/images/graemlins/wink.gif" alt="" />

22RE OWNERS CHECK FOR DEBRIS IN YOUR OIL PANS! YOU MIGHT SAVE YOUR MOTOR!
*** 1989 Toyota pickup 22re 5spd 4wd ***
* New mods *

305/70/R16 (33X12.5)
2 in suspention lift (zuk coils)
minor body work

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