Mike "Wuzzy121". Rest in peace, brother

Go Back   Tacoma World Forums > Tacoma Garage > Performance and Tuning

Notices

valve slash

Reply
 
Thread Tools Search this Thread
Old 11-04-2012, 05:45 PM   #1
joselito76 [OP] joselito76 is offline
Junior Member
joselito76 is on a distinguished road
Name: jose
Joined: Mar 2012, #73973
Location: san antonio
Gender: Male
Posts: 16
joselito76's Tacoma Gallery
valve slash

so I did a compression test today and I got 150,150,145,and 150 that looks a bit low, I belive by the repair manual the normal compression is between 180 and 160 if I remember clearly.My question is if a valve slash would be worth doing to get some of the compression back or I should just get a new head or a low millage used head. My other option is to strip the head take it to a m8chine shop get it back to spec and install everything my self use what ever can be use and replace what ever need to be replace. So what do you guys think.thanks in advance.
  Reply With Quote
Old 11-06-2012, 09:23 AM   #2
Tor-nication
Torspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shedTorspd is one of the sharper tools in the shed
Name: Tor
Joined: Sep 2009, #22958
Location: Houston
Gender: Dude
Posts: 4,978
Torspd's Tacoma Gallery
I say start with the cheapest option first. Then if you can adjust the valves. Do so, then check the compression again. I would also do a leak down test after that. If your restored your compression but the cylinders don't hold the compression, then it means your rings are worn out.

That will all give you a better idea of what all needs to be done or not.
  Reply With Quote
Old 11-06-2012, 10:09 PM   #3
joselito76 [OP] joselito76 is offline
Junior Member
joselito76 is on a distinguished road
Name: jose
Joined: Mar 2012, #73973
Location: san antonio
Gender: Male
Posts: 16
joselito76's Tacoma Gallery
Quote:
Originally Posted by Torspd View Post
I say start with the cheapest option first. Then if you can adjust the valves. Do so, then check the compression again. I would also do a leak down test after that. If your restored your compression but the cylinders don't hold the compression, then it means your rings are worn out.

That will all give you a better idea of what all needs to be done or not.
true,true. thanks torspd. One more thing how do you do a leak down test
i just google it got it thanks
  Reply With Quote
Old 11-07-2012, 07:31 AM   #4
Banned
06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed06SR5canada is one of the sharper tools in the shed
Joined: Jul 2011, #60338
Location: Saskatchewan
Gender: Male
Posts: 649
06SR5canada's Tacoma Gallery
Pretty sure it's called valve LASH lol
  Reply With Quote
Old 11-07-2012, 05:34 PM   #5
Senior Member
Gadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shedGadget@URD is one of the sharper tools in the shed
Joined: Sep 2008, #9183
Location: Southern Maryland USA
Posts: 629
Gadget@URD's Tacoma Gallery
I would not worry to much. The balance between the cylinders is what is important. The actual number is a bit low, but it could be from gauge error. I have several compression testers in my shop and have seen a 25 psi variation between them when used back to back on the same engine.

Did you prop the throttle valve open during the test?

It will not hurt anything to check the valve lash. If it is out of spec then thing about doing the adjustment.

G
  Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
Traxxas slash with upgrades! JStradaXR Buy / Sell / Trade - Other 5 01-12-2013 07:21 PM
FS: Slash 2wd Roller Tacomanator Buy / Sell / Trade - Other 3 04-28-2012 01:06 PM
Traxxas Slash for sale. SpeedBlueTaco0502 Buy / Sell / Trade - Other 7 01-28-2012 02:15 PM
New Valve & Head Job - Valve Train Noise? jjadkisson 1st Gen. Tacomas 2 01-09-2011 11:11 AM


Copyright © 2014 Tacoma Forum. Tacoma World is not owned by, or affiliated with Toyota Motor Corporation.