New Timing Belt breakage - 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 08-27-2012, 01:10 PM   #1
Newb
Thread Starter
 
Join Date: Apr 2008
Location: Northern VA
Posts: 31
Total Cats: 0
Default New Timing Belt breakage

Darnd'est thing happen'd on the way home last week, timing belt broke on my Miata. The odd thing is, it had maybe 1000-1500 miles on it at the time.
Granted, that is over the course of several months ( I know, lame, lame and super lame for not driving it more but I have 6 cars to drive ...) but that is NOTHING as far time and mileage.

This is the first time I've had one break in operation. No drama at all, it just stopped running like I turned the key off.

The belt itself has a nice clean break, not quite as nice as a knife cut but even and straight, not all jagged like I imagined it would be.

I'm going to go back and check my receipts to see where I bought the belt from and the mfg of the belt.

So, has anybody else run into a very short lived timing belt?
Are there brands we KNOW we should avoid?
The next belt is coming from Fly'nMiata..
wroark is offline   Reply With Quote
Old 08-27-2012, 01:17 PM   #2
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

nope, and i abuse the hell out of mine when installing/reinstalling multiples times.
Braineack is offline   Reply With Quote
Old 08-27-2012, 01:29 PM   #3
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,175
Total Cats: 2,578
Default

Must have been a defect. Been using regular 'ol replacement belts forever no issues.
18psi is offline   Reply With Quote
Old 08-27-2012, 01:34 PM   #4
Newb
 
Join Date: Nov 2007
Posts: 3
Total Cats: 0
Default

Usually a clean break happens when the belt is folded over on itself really badly, otherwise defect.

Ive used cheapo belts and expensive ones, none have broken or shown wear prior to 25000 km
Mi|<e is offline   Reply With Quote
Old 08-27-2012, 02:02 PM   #5
Newb
Thread Starter
 
Join Date: Apr 2008
Location: Northern VA
Posts: 31
Total Cats: 0
Default

I have to assume it was a defective belt, if the tensioner was faulty and allowed the belt to slacken enough to crease/fold, it seems it would have happened at the upper RPM range. I was cruising steady state at 3k when it broke. with all the valve train work, I have the limiter at 7500k and reach that regularly without issue (seems like that would stress the tensioner more, if it was an issue).
wroark is offline   Reply With Quote
Old 08-27-2012, 02:14 PM   #6
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

I had this happens years ago, now I buy the blue ones.
hustler is offline   Reply With Quote
Old 08-27-2012, 03:03 PM   #7
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,362
Total Cats: 1,323
Default

+1, I had an OEM belt start to come apart on Theseus after ~12 hours of track time. Switched to a Gates Kevlar belt and the issues are gone.
Savington is offline   Reply With Quote
Old 08-27-2012, 03:13 PM   #8
Elite Member
iTrader: (9)
 
TurboTim's Avatar
 
Join Date: Jun 2006
Location: Chesterfield, NJ
Posts: 6,484
Total Cats: 248
Default

Any belt will break like that if crimped in any direction, including (espeically?) the fancy gates.
TurboTim is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM
NA Seat Sliders and Seat Belt Receivers skipstr Miata parts for sale/trade 2 09-28-2015 11:53 PM


Tags
premature breakage, timing belt

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 09:08 AM.