Engine builders and super mechanics - help identify this part please! - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 09-20-2016, 02:38 PM   #1
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: OC
Posts: 69
Total Cats: -5
Default Engine builders and super mechanics - help identify this part please!

While changing the oil in prep for an upcoming event at Laguna Seca, this turd came out of the drain port. I'll know in a day or two its exact chemical make up, but some early speculation from you experts would be welcome.

Need any background info? Track car, not always treated nicely, Carrilo A-beams, JE Pistons, SUBs, double-springs, etc.

Thanks!
Attached Thumbnails
Engine builders and super mechanics - help identify this part please!-160920_engine-part.jpg  
1999NB is offline   Reply With Quote
Old 09-20-2016, 02:47 PM   #2
SadFab CEO
iTrader: (3)
 
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 3,558
Total Cats: 456
Default

need better pics
hi_im_sean is offline   Reply With Quote
Old 09-20-2016, 02:59 PM   #3
Junior Member
iTrader: (1)
 
Join Date: Dec 2015
Location: Brisbane
Posts: 167
Total Cats: -10
Default

Looks like a shim which goes between the crank and the rod. 2 on every rod.
I just removed my stock rods yesterday. Telltale sign is the little bent clip edge on both ends which locks it in.

Pray to the gods this fell into the sump and its one of the stock originals and not your new built engine. I would be talking to the engine builder.... And getting them to check it.
However the fact its bent..... Did you blow the stock rods? May have fallen in and sat there under the sump pickup shield.
adryargument is offline   Reply With Quote
Old 09-20-2016, 03:06 PM   #4
Senior Member
iTrader: (8)
 
cyotani's Avatar
 
Join Date: Jan 2012
Location: Azusa, CA
Posts: 1,366
Total Cats: 80
Default

looks like a bearing but you'd know long before an oil change if your bearing went out.
cyotani is offline   Reply With Quote
Old 09-20-2016, 03:24 PM   #5
SadFab CEO
iTrader: (3)
 
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 3,558
Total Cats: 456
Default

I disagree, its too thin, and any bearing that has been fuked in the *** like that will show its copper colored layer, etc. Its also the wrong shape, although that could have changed during its exit.

Looks like a shim or the metal part of a seal or something. Maybe a piece of the windage tray.
hi_im_sean is offline   Reply With Quote
Old 09-20-2016, 03:59 PM   #6
Junior Member
 
mmmjesse's Avatar
 
Join Date: Aug 2007
Posts: 454
Total Cats: 35
Default

looks like the shims that go under the valve springs to me. not sure how that would have broken but thats what it looks like.

Quote:
Looks like a shim which goes between the crank and the rod. 2 on every rod.
Not sure what you are referring to??
mmmjesse is offline   Reply With Quote
Old 09-20-2016, 04:09 PM   #7
SadFab CEO
iTrader: (3)
 
Join Date: Sep 2012
Location: your mom's house phoenix, AZ
Posts: 3,558
Total Cats: 456
Default

Quote:
Originally Posted by mmmjesse View Post
looks like the shims that go under the valve springs to me. not sure how that would have broken but thats what it looks like.



Not sure what you are referring to??
Hes referring to the bearings... I think. I too have never heard them described as "a shim that goes between the crank and rod"
hi_im_sean is offline   Reply With Quote
Old 09-20-2016, 04:41 PM   #8
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: OC
Posts: 69
Total Cats: -5
Default

Good info so far, thank you.

Engine runs, sounds, idles, and pulls very well. . . at least for now. It's not a fresh build, but I'm not immune to a money shift here or there either, which is what I'm worried about.
1999NB is offline   Reply With Quote
Old 09-20-2016, 05:01 PM   #9
Elite Member
iTrader: (21)
 
Join Date: Jun 2007
Location: Rochester, NY
Posts: 5,334
Total Cats: 383
Default

Those aren't bearings unless your engine has been miniaturized. Some sort of shim.
rleete is offline   Reply With Quote
Old 09-20-2016, 05:01 PM   #10
Elite Member
iTrader: (5)
 
Erat's Avatar
 
Join Date: Oct 2011
Location: Detroit
Posts: 3,992
Total Cats: 235
Default

Thrust washer?
Erat is offline   Reply With Quote
Old 09-20-2016, 05:03 PM   #11
Junior Member
iTrader: (1)
 
Join Date: Dec 2015
Location: Brisbane
Posts: 167
Total Cats: -10
Default

Sure?

adryargument is offline   Reply With Quote
Old 09-20-2016, 05:06 PM   #12
Junior Member
iTrader: (1)
 
Join Date: Dec 2015
Location: Brisbane
Posts: 167
Total Cats: -10
Default

Edit: actually on second look, is it half moon flat shape?
I have 2 of those on either side of the cylinder 3 crank weight. Maybe just a balancer?


adryargument is offline   Reply With Quote
Old 09-20-2016, 08:27 PM   #13
Elite Member
iTrader: (4)
 
MartinezA92's Avatar
 
Join Date: Aug 2009
Location: Mountain View, CA
Posts: 1,621
Total Cats: 18
Default

My first thought was thrust washer.
MartinezA92 is offline   Reply With Quote
Old 09-20-2016, 08:54 PM   #14
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 12,711
Total Cats: 850
Default

Quote:
Originally Posted by MartinezA92 View Post
My first thought was thrust washer.
That would be my thought to. OP have someone sit in the passengers seat and pump the clutch. Watch the crank pulley and see if you see it moving in and out any.
shuiend is online now   Reply With Quote
Old 09-20-2016, 09:15 PM   #15
afm
Junior Member
iTrader: (3)
 
Join Date: Nov 2015
Location: Berkeley, CA
Posts: 485
Total Cats: 45
Default

Quote:
Originally Posted by adryargument
Edit: actually on second look, is it half moon flat shape?
I have 2 of those on either side of the cylinder 3 crank weight. Maybe just a balancer?
Not sure if serious...
afm is offline   Reply With Quote
Old 09-20-2016, 09:16 PM   #16
Junior Member
 
mmmjesse's Avatar
 
Join Date: Aug 2007
Posts: 454
Total Cats: 35
Default

way way way too small for a thrust washer. see my pic below for the stock shim that goes under the stock valve springs. Not sure what was used on your double valve springs but this is the only thing in your engine that i could think it to be. I just assembled a 2003 VVT engine so it is fresh in my memory.

mmmjesse is offline   Reply With Quote
Old 09-20-2016, 09:19 PM   #17
Junior Member
 
mmmjesse's Avatar
 
Join Date: Aug 2007
Posts: 454
Total Cats: 35
Default

Quote:
Originally Posted by adryargument View Post
Edit: actually on second look, is it half moon flat shape?
I have 2 of those on either side of the cylinder 3 crank weight. Maybe just a balancer?
I think you should probably stop responding to these things which you clearly know nothing about man. no offense or anything but you are just going to cause confusion.
mmmjesse is offline   Reply With Quote
Old 09-20-2016, 09:40 PM   #18
Junior Member
 
Forrest95M's Avatar
 
Join Date: Jan 2016
Posts: 382
Total Cats: 13
Default

Quote:
Originally Posted by MartinezA92 View Post
My first thought was thrust washer.
*Almost* looks like its been worn down too much to be a thrust washer. Also looks like its to small of a circumference to be a thrust washer.

My guess is an oil squirter crush washer some how broke. Heat maybe? although it doesn't look copper..
Forrest95M is offline   Reply With Quote
Old 09-20-2016, 09:41 PM   #19
Junior Member
 
Forrest95M's Avatar
 
Join Date: Jan 2016
Posts: 382
Total Cats: 13
Default

Quote:
Originally Posted by mmmjesse View Post
way way way too small for a thrust washer. see my pic below for the stock shim that goes under the stock valve springs. Not sure what was used on your double valve springs but this is the only thing in your engine that i could think it to be. I just assembled a 2003 VVT engine so it is fresh in my memory.

Hard to believe that something like that could get from the head down to the pan...
Forrest95M is offline   Reply With Quote
Old 09-20-2016, 09:49 PM   #20
Junior Member
Thread Starter
 
Join Date: Nov 2014
Location: OC
Posts: 69
Total Cats: -5
Default

Quote:
Originally Posted by Forrest95M View Post
*Almost* looks like its been worn down too much to be a thrust washer. Also looks like its to small of a circumference to be a thrust washer.

My guess is an oil squirter crush washer some how broke. Heat maybe? although it doesn't look copper..
Don't think it's copper, either, but will be doing a chemical analysis on it tomorrow. Sure looks and feels like a steel component.
1999NB is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Mocal t-stat oil cooler sandwich plate - cold flow? Blackbird Race Prep 5 09-24-2016 09:50 PM
New to the scene... track car... jimmy20282 General Miata Chat 22 09-23-2016 08:56 PM
K24 Miata dyno day - we find 233whp N/A by testing headers, cams, and more KMiata Engine Performance 8 09-20-2016 01:31 AM
oil pressure issue Forrest95M DIY Turbo Discussion 45 09-19-2016 10:26 PM
Early short nose giving me fits. blackdbl9NB Engine Performance 5 08-29-2016 03:52 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 03:02 PM.