metallic sheen/metal in oil after rebuild. did your rebuild have something similar? - 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 10-02-2012, 04:08 PM   #1
Senior Member
Thread Starter
iTrader: (8)
 
Join Date: Sep 2010
Location: misery
Posts: 1,130
Total Cats: 9
Default metallic sheen/metal in oil after rebuild. did your rebuild have something similar?

got a 99 engine that was bored with 83.5mm wiseco pistons. h-beam rods.
new bearings.
new oil pump.
new seals.
first start was yesterday and sat at 2000rpm for 30 minutes.
after this 30 minute period, the oil was drained and tested and there was apparently metal in it.
i don't think (i'd have to get more info) it was metal shavings...just a metallic sheen if you will.

for those of you with rebuilt blocks, did you run into this?

*i can't ******* win*
phillyb is offline   Reply With Quote
Old 10-02-2012, 04:11 PM   #2
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,780
Total Cats: 1,106
Default

Wait why did you let the motor just run at 2k rpms for 30 minutes? I am pretty sure you are supposed to get up to temp, then go and break in the rings immediately.

Last edited by shuiend; 10-02-2012 at 04:45 PM.
shuiend is offline   Reply With Quote
Old 10-02-2012, 04:12 PM   #3
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Quote:
Originally Posted by phillyb View Post
first start was yesterday and sat at 2000rpm for 30 minutes.
Who told you to do this? This is literally the worst way you could possibly attempt to break in an engine.

Go beat the **** out of the engine to try and salvage whatever mediocre ring seal you can manage. Pull the oil after 200 miles and send a sample to Blackstone and have them tell you what's actually in the oil.
Savington is offline   Reply With Quote
Old 10-02-2012, 04:12 PM   #4
Senior Member
Thread Starter
iTrader: (8)
 
Join Date: Sep 2010
Location: misery
Posts: 1,130
Total Cats: 9
Default

this was done at planet miata.
from my understanding, they do the same thing for all of the engines they break in.
i'm assuming it was up to temp before the 30 minute period at 2k.
phillyb is offline   Reply With Quote
Old 10-02-2012, 04:15 PM   #5
Senior Member
Thread Starter
iTrader: (8)
 
Join Date: Sep 2010
Location: misery
Posts: 1,130
Total Cats: 9
Default

i should also note that the bore/hone was done about 4 months ago and then the block sat covered.
i'm hoping, but can't guarantee that there was assembly lube on the bearings.
phillyb is offline   Reply With Quote
Old 10-02-2012, 04:32 PM   #6
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Who assembled it? Was there oil pressure before they started it?
Savington is offline   Reply With Quote
Old 10-02-2012, 04:37 PM   #7
Moderator
iTrader: (11)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,684
Total Cats: 1,562
Default

You are supposed to apply a load and vary the RPMs significantly during break in. I though everybody knew that.
sixshooter is online now   Reply With Quote
Old 10-02-2012, 04:38 PM   #8
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

lol @ full-blown retardation.
hustler is offline   Reply With Quote
Old 10-02-2012, 05:24 PM   #9
Senior Member
Thread Starter
iTrader: (8)
 
Join Date: Sep 2010
Location: misery
Posts: 1,130
Total Cats: 9
Default

Quote:
Originally Posted by Savington View Post
Who assembled it? Was there oil pressure before they started it?
long story...
shop in pa. i believe it was called precision something...
the car was at a shop called platinum who used precision for the machining.
the block was hot tanked, then bored/honed.
new oil pump. pressure before was ok (read: good enough, but not great) before the rebuild.
then it went to ****.

Quote:
Originally Posted by sixshooter View Post
You are supposed to apply a load and vary the RPMs significantly during break in. I though everybody knew that.
i've read various different break in methods.
i do indeed trust planet miata given they've broken in a bunch of engines.
regardless, maybe i am indeed just ree reeee
phillyb is offline   Reply With Quote
Old 10-02-2012, 06:14 PM   #10
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 13,780
Total Cats: 1,106
Default

This is the break in guide you should follow.
shuiend is offline   Reply With Quote
Old 10-02-2012, 06:47 PM   #11
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

I like to break in engines by letting them idle for a few days. Then, I sping them backwards for a few minutes.
hustler is offline   Reply With Quote
Old 10-02-2012, 06:49 PM   #12
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

BTW, Planet Miata charges $2500 for a Torsen swap in a 1.6. lol
hustler is offline   Reply With Quote
Old 10-02-2012, 07:08 PM   #13
Senior Member
iTrader: (8)
 
Join Date: Jun 2010
Location: Navarre, FL
Posts: 1,127
Total Cats: 39
Default

A+ thread
aaronc7 is offline   Reply With Quote
Old 10-02-2012, 11:37 PM   #14
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,370
Total Cats: 1,332
Default

Quote:
Originally Posted by phillyb View Post
i do indeed trust planet miata given they've broken in a bunch of engines.
You're the only one. I don't care how many engines they've screwed up doing this - it's not the right way to do it.
Savington is offline   Reply With Quote
Old 10-03-2012, 12:07 AM   #15
Elite Member
iTrader: (4)
 
MartinezA92's Avatar
 
Join Date: Aug 2009
Location: Mountain View, CA
Posts: 1,702
Total Cats: 28
Default

Quote:
Originally Posted by phillyb View Post


i do indeed trust planet miata given they've broken in a bunch of engines.
regardless, maybe i am indeed just ree reeee
I'm really sad that they do this/tell anyone to do this/think that this is a good idea.
MartinezA92 is offline   Reply With Quote
Old 10-03-2012, 12:16 AM   #16
Junior Member
iTrader: (3)
 
Join Date: Jul 2008
Location: Fresno CA
Posts: 137
Total Cats: 3
Default

Like sixshooter noted above engines need to see varied RPM during break-in. The reason is not the RPM so much, but the introduction of load/vacuum on the piston rings. Once the engine goes to 0 vac (full throttle NA) letting off and allowing the engine to drop to 25+ vac will force the rings to the bore so they can seat properly. In my engine I actually broke it in under boost (5.6 psi) then vac. After 7 years, and 45000 miles, half on track I still have 185 psi to 190 psi compression on my engine. I actually did a compression test 3 days ago.

What should have been done is a prelube of the engine using the oil pressure port to get oil to the engine and in my case the turbo, then start up to ensure you have full oil pressure, then shut off 15-30 sec later. Check under the car for leaks and fasteners coming loose. If there are no leaks and everything looked fine, start it up again and go for a drive, preferably in city to vary engine speed bringing the engine up to full operating temp for at least 20 min. Like Sav noted above drain the oil after 200 miles and replace again with dino oil and run that for 4000 miles drain and replace to include a filter change (I like wix) with Rotella T6.
twothirdsCobra is offline   Reply With Quote
Old 10-03-2012, 12:21 AM   #17
Elite Member
iTrader: (2)
 
triple88a's Avatar
 
Join Date: Apr 2006
Location: Chicago, IL
Posts: 9,131
Total Cats: 598
Default

Well its time for a re-hone and new piston rings. Then try again but dont let it sit at 2k rpm for half an hr this time.

I wonder what they will say to back up their retardation.

Last edited by triple88a; 10-03-2012 at 12:33 AM.
triple88a is offline   Reply With Quote
Old 10-03-2012, 11:11 AM   #18
Senior Member
Thread Starter
iTrader: (8)
 
Join Date: Sep 2010
Location: misery
Posts: 1,130
Total Cats: 9
Default

i forget that when i ask for help, i have to read.
thanks everyone.
phillyb is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
1991 special edition with hard top full part out JC, NJ russian Miata parts for sale/trade 6 10-08-2015 04:01 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Moroso Air Oil Separator Catch Can Aroundcorner Miata parts for sale/trade 2 10-01-2015 04:20 PM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 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 04:24 AM.