Notices
86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS
Sponsored by:
Sponsored by: DashLynx

Look at Crack Piston while Rebuilding my 3VZE

Thread Tools
 
Search this Thread
 
Old 04-24-2013, 01:06 PM
  #1  
Registered User
Thread Starter
 
cheappc's Avatar
 
Join Date: Feb 2013
Location: So Cal - 1993 4Runner V6 4X4 Automatic
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
Look at Crack Piston while Rebuilding my 3VZE

When I went to the machine shop, the same shop that is doing a complete rebuilding of my motor, this is what they found

I didnt have time to take actual picture, plus it was too dark, but this pictures looks almost exactly the same, however mines is worse

Old 04-24-2013, 01:18 PM
  #2  
Registered User
iTrader: (-1)
 
Co_94_PU's Avatar
 
Join Date: Dec 2012
Location: Colorado
Posts: 5,433
Likes: 0
Received 554 Likes on 452 Posts
Bet that was guzzling oil
Old 04-24-2013, 01:26 PM
  #3  
totally a bro
Staff
iTrader: (2)
 
vital22re's Avatar
 
Join Date: Feb 2006
Location: kick yer face
Posts: 8,158
Received 45 Likes on 28 Posts
Time to bore out the block and run bigger pistons.
Old 04-24-2013, 02:04 PM
  #4  
Registered User
 
MudHippy's Avatar
 
Join Date: Jan 2007
Posts: 6,106
Likes: 0
Received 23 Likes on 20 Posts
Originally Posted by cheappc
...but this pictures looks almost exactly the same, however mines is worse

You're welcome...
Originally Posted by Co_94_PU
Bet that was guzzling oil
No, it wasn't, actually. But it was losing ≥ 70 PSI of compression on that cylinder. There was a seperate(d) piece plugging that hole up, until I removed the piston from the engine.
Originally Posted by vital22re
Time to bore out the block and run bigger pistons.
Might not be necessary(I put in new STD size). Not a bad idea though. If feasible...

Last edited by MudHippy; 04-24-2013 at 02:05 PM.
Old 04-24-2013, 03:28 PM
  #5  
Registered User
Thread Starter
 
cheappc's Avatar
 
Join Date: Feb 2013
Location: So Cal - 1993 4Runner V6 4X4 Automatic
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
Thanks Mudhippy, I was amazed at how my piston looked exactly as yours... thanks for the picture... but since I went to the machine shop for lunch, I didnt have a lot of time to take pictures of everything..

They took my motor completely apart, I saw the bottom end and top end... they also made me feel "the inside" of the sleeve, it was bad, I could feel a huge bump in it... so what do they do in this situation?
Old 04-24-2013, 03:56 PM
  #6  
Registered User
 
MudHippy's Avatar
 
Join Date: Jan 2007
Posts: 6,106
Likes: 0
Received 23 Likes on 20 Posts
If it's as bad as it sounds...boring .040" over might not be enough. And the largest pistons for this engine that are readily available are only 1.0mm/.040" OS(AFAIK).

In that case the cylinders would need sleeved. Since there are no sleeves to be simply replaced(would be afterwards though). But that's a rather complicated/expensive/time-consuming process. Considering it's usually a whole lot easier/cheaper/quicker to find another rebuilt/rebuildable short/long block(or, if $ is limited, just a decent used, and/or rebuildable, cylinder block).

Last edited by MudHippy; 04-24-2013 at 04:03 PM.
Old 04-24-2013, 05:19 PM
  #7  
Registered User
Thread Starter
 
cheappc's Avatar
 
Join Date: Feb 2013
Location: So Cal - 1993 4Runner V6 4X4 Automatic
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
What would cause something like this?
Old 04-24-2013, 05:22 PM
  #8  
Registered User
iTrader: (2)
 
Toyota~Boy's Avatar
 
Join Date: Oct 2006
Location: Kenna, WestVirginia
Posts: 1,514
Likes: 0
Received 1 Like on 1 Post
Originally Posted by cheappc
What would cause something like this?
Several things.... Overheating, cylinder wear causing piston slap, wrist pin bearings, ext...
Old 05-23-2013, 05:38 PM
  #9  
Registered User
Thread Starter
 
cheappc's Avatar
 
Join Date: Feb 2013
Location: So Cal - 1993 4Runner V6 4X4 Automatic
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
Just wanted to update everyone, I got my engine completely rebuilt, and I have driven 500 miles and it has worked flawlessly! (knocking on wood)

However, 3 days when they originally gave it to me, it blew a rod (thats what they said), they completely rebuilt it again, and this time I believe gave me a new crankshaft, because the other one was way too machined (thats what I think they said)
Old 05-23-2013, 05:58 PM
  #10  
Fossilized
Staff
iTrader: (6)
 
dropzone's Avatar
 
Join Date: Oct 2005
Location: PNW
Posts: 19,771
Received 448 Likes on 293 Posts
Originally Posted by cheappc
Jit blew a rod (thats what they said), they completely rebuilt it again, and this time I believe gave me a new crankshaft, because the other one was way too machined (thats what I think they said)
what does your paperwork say?
Old 05-24-2013, 07:00 AM
  #11  
Registered User
Thread Starter
 
cheappc's Avatar
 
Join Date: Feb 2013
Location: So Cal - 1993 4Runner V6 4X4 Automatic
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by dropzone
what does your paperwork say?
New Rod, New Bearings, New Pistons, New Rings, New Crankshaft, Gaskets, Upper and Lower End complete overhaul.

12 months 12,000 mile warranty
Old 03-07-2014, 01:54 PM
  #12  
Registered User
Thread Starter
 
cheappc's Avatar
 
Join Date: Feb 2013
Location: So Cal - 1993 4Runner V6 4X4 Automatic
Posts: 59
Likes: 0
Received 0 Likes on 0 Posts
My head gasket went back out 3-4-2014...

Im giving up on this truck I totalled it yesterday in a car accident, after I tried to repair the head gasket going out just this monday, as a matter of fact, I was trying it out towing my boat yesterday just to see how it would do on the freeway, never made it, somebody caught in front of me and i couldnt stop and totalled the truck? not really totalled but I could hear the engine clack??

It was trouble free for exactly 10 months, I loved it, thankfully I towed my boat about 30 times during the last 10 months, I took it to Laughlin, Las Vegas, Piru, Elsinore, Castaic.

I went everywhere, so I got my use out of it, not much though, I put $3,400 into it ($1600 for the truck, $1800 for the rebuilt motor).

I didnt want to spend another $1,1000 (that would take me to $4500)... im giving up on it, loved it though, but the cost of the repair (just in body work) probably $2000, plus the head gasket problem... not sure if its cost effective...\
Old 03-07-2014, 02:11 PM
  #13  
Registered User
 
Gamefreakgc's Avatar
 
Join Date: Sep 2012
Location: Roseville, CA
Posts: 1,172
Likes: 0
Received 1 Like on 1 Post
Originally Posted by cheappc
My head gasket went back out 3-4-2014...

Im giving up on this truck I totalled it yesterday in a car accident, after I tried to repair the head gasket going out just this monday, as a matter of fact, I was trying it out towing my boat yesterday just to see how it would do on the freeway, never made it, somebody caught in front of me and i couldnt stop and totalled the truck? not really totalled but I could hear the engine clack??

It was trouble free for exactly 10 months, I loved it, thankfully I towed my boat about 30 times during the last 10 months, I took it to Laughlin, Las Vegas, Piru, Elsinore, Castaic.

I went everywhere, so I got my use out of it, not much though, I put $3,400 into it ($1600 for the truck, $1800 for the rebuilt motor).

I didnt want to spend another $1,1000 (that would take me to $4500)... im giving up on it, loved it though, but the cost of the repair (just in body work) probably $2000, plus the head gasket problem... not sure if its cost effective...\
Sorry to hear that! Hopefully you can get a new truck/SUV with a more reliable motor! I guess yours couldn't take the stress of constant towing.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bigjstang
86-95 Trucks & 4Runners
20
08-25-2021 12:41 AM
dumpster84
84-85 Trucks & 4Runners
25
04-30-2016 06:03 AM
Sr5crawler
86-95 Trucks & 4Runners
5
07-31-2015 12:32 PM
A2theK
86-95 Trucks & 4Runners
5
07-12-2015 10:46 AM
horunner1x
86-95 Trucks & 4Runners
10
07-10-2015 06:33 AM



Quick Reply: Look at Crack Piston while Rebuilding my 3VZE



All times are GMT -8. The time now is 11:04 AM.