GalantVR4.org The Mitsubishi Galant VR-4 Forum
Galant VR-4 Forums » Galant VR-4 » Technical Discussions » checking rods/pistons
Previous thread Next thread

checking rods/pistons


14u2nV
Resident Pedobear


Galant VR-4 org Post #: 797993 posted 06/02/09 12:07 AM     Remind Me!  Send Private Message   Edit Post      
I pulled the pistons out of my engine that broke a valve, and was wondering how I can find out if the rods/pistons are still good? I'm assuming the 4 rods, and 3 pistons are still ok, but is the only real way to know by sending them to a machine shop?





~Kenneth Brian
"Censorship offends me" ~Author Unknown



Edited by 14u2nV (06/02/09 01:35 AM)

Posts: 9397 | From: Agency/St. Joe, MO | Member Since: 07/22/04 | IP: (207.192.201.168) | Report this post to a Moderator

cspetros
Scores a 10


Galant VR-4 org Post #: 798329 posted 06/02/09 11:35 PM     Remind Me!  Send Private Message   Edit Post      
My 2 cents, since nobody else has said anything:

As far as I know, unless the damage is clearly evident, you'll have to take some measurements. Many people aren't comfortable with this process/don't have the tools, so they let a machine shop take care of it.

Here is the info you will need:



Personally, I have no idea how to measure bend and twist for a connecting rod; I think it requires some sort of alignment device.

Maybe Dialcaliper will speak up. He usually has something valuable to say in matters like these.

Posts: 512 | From: Asheville upon NC | Member Since: 07/19/08 | IP: (72.71.122.243) | Report this post to a Moderator

Dialcaliper
Flagration Member
1269/2000


Galant VR-4 org Post #: 798659 posted 06/03/09 08:46 PM     Remind Me!  Send Private Message   Edit Post      
If there is any visible damage to the pistons, then scrap them - if they were cracked, they most likely would have failed spectacularly by now (cracked, melted, severe skirt wear or valve impact). If not, and the rods are straight (cast rods will bend before cracking), it's pretty cheap to have a machine shop magnaflux the rods. ($25-40). If you have the tools (micrometer and T-gauge), it's not too hard to check the big-end bores.



1269/2000 Summit White


Edited by Dialcaliper (06/03/09 08:49 PM)

Posts: 1284 | From: Mountain View, CA | Member Since: 06/22/07 | IP: (158.184.37.55) | Report this post to a Moderator

14u2nV
Resident Pedobear


Galant VR-4 org Post #: 798662 posted 06/03/09 08:56 PM     Remind Me!  Send Private Message   Edit Post   
I don't have the tools, but have access to them. At least two of the pistons are damaged, one could probably be fixed, but not worth it to me. I'll probably keep the rods and the two pistons for spares or paper weights. Hopefully I can use or find someone to use the rods. Thanks for the help.



~Kenneth Brian
"Censorship offends me" ~Author Unknown


Posts: 9397 | From: Agency/St. Joe, MO | Member Since: 07/22/04 | IP: (207.192.201.168) | Report this post to a Moderator


Pages: 1
Previous thread Next thread

Extra information
0 registered and 6 anonymous users are browsing this forum.

Galant VR4.org Moderator:  curtis, steve, atc250r, jcgalntvr4-244, cheekychimp, jepherz, Rausch, toybreaker, iceman69510, pot, FlyingEagle 

Print Thread

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 642

Rate this thread


News & Events: News | Events
Galant VR-4: Newbies | General VR4 Discussions | Technical Discussions | How To and Info Archive
Marketplace: Parts For Sale | Cars For Sale | Good Guys | Bad Guys
Community: Members' Showcase

Contact Us | Privacy statement GalantVR-4.org

Generated in 0.071 seconds in which 0.06 seconds were spent on a total of 14 queries. Turbo powered.


Hertz's Galant VR-4 Page