what does an ou-of-spec solid lifter sound like? v.I'm a Down's survivor - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 01-01-2010, 03:30 PM   #1
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default what does an ou-of-spec solid lifter sound like? v.I'm a Down's survivor

I have a weird noise around the intake side on 3# that sounds like HLA noise, but more like tapping with a hammer, almost like a diesel. I listened around with a long socket extension and cannot isolate the noise...which tells me its valvetrain.

Thoughts?

Last edited by hustler; 01-01-2010 at 03:47 PM.
hustler is offline   Reply With Quote
Old 01-01-2010, 03:40 PM   #2
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,914
Default

How does a solid lifter malfunction?
Joe Perez is offline   Reply With Quote
Old 01-01-2010, 03:40 PM   #3
Junior Member
iTrader: (1)
 
Join Date: Apr 2008
Location: Bristol
Posts: 442
Total Cats: 0
Default

Unless you have ejaculated the shim altogether I'm not entirely sure what could malfunction with a solid lifter. Pop the valve cover off and take a peek. If all looks well then start pressing the lifters to feel for a sticky one.

Edit: damn joe beat me to it!
Duckie_uk is offline   Reply With Quote
Old 01-01-2010, 03:46 PM   #4
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by Joe Perez View Post
How does a solid lifter malfunction?
out-of-spec. Sorry.
hustler is offline   Reply With Quote
Old 01-01-2010, 03:49 PM   #5
I'm Miserable!
iTrader: (33)
 
Join Date: Jan 2009
Location: San Jose, CA
Posts: 1,066
Total Cats: -3
Default

might be a spun bearing, and its the piston hitting/tapping the head.

Pray to the miata gods its not
railz is offline   Reply With Quote
Old 01-01-2010, 03:51 PM   #6
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by railz View Post
might be a spun bearing, and its the piston hitting/tapping the head.

Pray to the miata gods its not
It only does it at idle and can only be heard when the hood is up. Don't scare the **** out of me, I do not appreciate it.
hustler is offline   Reply With Quote
Old 01-01-2010, 03:53 PM   #7
Cpt. Slow
iTrader: (25)
 
curly's Avatar
 
Join Date: Oct 2005
Location: Oregon City, OR
Posts: 12,105
Total Cats: 518
Default

Only time I've heard that is with low oil, so it's not getting to the HLA's, which obviously you do not have. The other other time I've heard it is with a spun crank bearing, where the oil hole was hitting the damaged part every revolution. That could be heard everywhere fairly noticeably, where as the HLA noise went away with higher rpms, as the pump would spin faster and get oil up there. Check the obvious, then start tearing **** apart.
curly is offline   Reply With Quote
Old 01-01-2010, 03:56 PM   #8
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,914
Default

I'm with the duck-man on this one. Pull the VC and take a look while rotating the engine. Any excessive clearances?
Joe Perez is offline   Reply With Quote
Old 01-01-2010, 03:57 PM   #9
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

bye bye turbo miata, hello all motor terror.

Going for a beer, I can't deal with this ****. Thanks for the help.
hustler is offline   Reply With Quote
Old 01-01-2010, 04:05 PM   #10
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Chicago (Over two miles from Wrigley Field. Fuck the Cubs. Fuck them in their smarmy goat-hole.)
Posts: 26,317
Total Cats: 1,914
Default

Tell your sister she can pick up her stuff this evening.
Joe Perez is offline   Reply With Quote
Old 01-01-2010, 04:13 PM   #11
Junior Member
iTrader: (1)
 
Join Date: Apr 2008
Location: Bristol
Posts: 442
Total Cats: 0
Default

Apart from low comp and mad turbo I'm not familiar with your build. What have you done to the head if anything? I'm thinking possibly a sticky valve.

Edit: even if it is just an out of spec shim you have to ask yourself why it's suddenly out of spec. The Valve seat wearing is about the only thing that I can think of that would change the shim requirements

Last edited by Duckie_uk; 01-01-2010 at 04:48 PM.
Duckie_uk is offline   Reply With Quote
Old 01-01-2010, 05:08 PM   #12
I'm Miserable!
iTrader: (33)
 
Join Date: Jan 2009
Location: San Jose, CA
Posts: 1,066
Total Cats: -3
Default

poor guy, didnt drink last night?
railz is offline   Reply With Quote
Old 01-01-2010, 05:45 PM   #13
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

The head just got new seals and shimmer by a ro. It's always made this noise but I chose to worry about it this day. I think it's fine and I'm just paranoid.
hustler is offline   Reply With Quote
Old 01-01-2010, 05:54 PM   #14
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,689
Total Cats: 99
Default

I have heard the same noise from other 4W heads (similar to a noisy hydraulic lifter in tone and volume, from the center area of the head, hear it at idle). This includes my own head. I head the noise when I bought the car--bought it anyway, and have driven it 7 thousand miles now. Car has fine compression and leak down, so I don't let it bother me.
Ben is offline   Reply With Quote
Old 01-01-2010, 06:07 PM   #15
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,362
Total Cats: 1,323
Default

My BP4W head had the same thing. Really light, only at idle.
Savington is offline   Reply With Quote
Old 01-01-2010, 06:31 PM   #16
Junior Member
iTrader: (1)
 
Join Date: Apr 2008
Location: Bristol
Posts: 442
Total Cats: 0
Default

Sounding more and more like it's idiopathic
Duckie_uk is offline   Reply With Quote
Old 01-01-2010, 07:25 PM   #17
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

It's way to fast t have a long rod.
hustler is offline   Reply With Quote
Old 01-01-2010, 07:38 PM   #18
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by Joe Perez View Post
Tell your sister she can pick up her stuff this evening.
If you weren't such a phenomenal technical resoursce I would e-thug you into submission. You've been warned...
hustler is offline   Reply With Quote
Old 01-01-2010, 07:57 PM   #19
Elite Member
iTrader: (1)
 
NA6C-Guy's Avatar
 
Join Date: Feb 2008
Location: Birmingham Alabama
Posts: 8,038
Total Cats: 43
Default

Probably sounds a lot like your non stop bitching and complaining. Go n/a or shut your trap!
NA6C-Guy is offline   Reply With Quote
Old 01-01-2010, 08:11 PM   #20
Tour de Franzia
Thread Starter
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by NA6C-Guy View Post
Probably sounds a lot like your non stop bitching and complaining. Go n/a or shut your trap!
Thank your lucky ******* dwarf star that I'm on an iPhone and drunk enough that I don't have the dexterity to type out a longwinded description Oh duck it.
hustler is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Buzzing from driver side of engine bay? (MS3 install) nick470 MEGAsquirt 7 06-16-2017 02:53 PM
1994 Spec Miata Race Car SM/SM2/SSM For Sale Quinn Cars for sale/trade 6 10-23-2016 08:58 AM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM
"Chimney Ethanol" E100 MiataGarage Engine Performance 5 09-30-2015 12:04 AM


Thread Tools

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 09:26 AM.