First of all…Happy Fourth of July…as of yesterday…my ’90A is still
in the air at the dealership (literally)…the new crankshaft has been
installed…there was a bit of a wait for the correct main bearings to
arrive…i heard the car run yesterday for the first time since the c.s.
has been replaced…what an incredible difference in terms of throttle
response at idle!!!…this is good!…i saw the old c.s. the key appeared
to have been inserted incorrectly as was suspected…it just was not
sitting correctly…so the c.s. has been replaced, the timing belt drive
gear, the front seal, the main bearings, the harmonic balancer/pulley.
However…there is an uncertaintay as to whether or not the c.s. bolt that
came with the new c.s. is the since improved "hardened" bolt. Perhaps
someone out there knows this information…here is a list of the
generation of Mazda part numbers as they relate to the crankshaft and
bolt.
I was told that the original c.s. part number was:
B61611300A
which was altered (improved) and changed to the following number:
B61611300B
It is my understanding that the most current version of this improved
crankshaft is as follows:
B61711300 (no alpha character).
In relation to the crankshaft bolt…there have been three successions of
this bolt too…in the series listed, from first to most current:
B63011406A
B63011406B
B63011406C (most current)
The part number for the c.s. key…is as follows, with two apparent
changes:
B63011317
B63011317A (most current)
Does anyone have information which would contradict the above…i’d sure
love to know…thanks..
At this moment, the dealership and I are attempting to answer the
crankshaft bolt question before committing any particular bolt, coated in
thread-lock, to the crankshaft. But I half expect that by Wednesday of
next week…i will have the car back…
Take care all..!!
Noah
Actually, the bolt is not hardened…it is just coated with a different
adhesive. Welcome to the wonderful world of B6 bottom end troubles which we
Mazda 323GTX owners have known for years before you :-> It is nice to have
company. (The B6 and the B6 turbo engine have been around since 1985 in the
323 and 323GTX)
Anyone else reading this who needs a bottom end (or top, for that matter) I
have 1 brand new and 1 used B6turbo motor available either complete or will
separate into major components. Give your Miata a real kick in the pants!
Bryan
(519) 885-0341
y
- Hide quoted text — Show quoted text -
In article <19970704145601.KAA29…@ladder02.news.aol.com> noaz…@aol.com (NoaZark) writes:
>From: noaz…@aol.com (NoaZark)
>Subject: Crankshaft failure update!
>Date: 4 Jul 1997 14:56:29 GMT
>First of all…Happy Fourth of July…as of yesterday…my ’90A is still
>in the air at the dealership (literally)…the new crankshaft has been
>installed…there was a bit of a wait for the correct main bearings to
>arrive…i heard the car run yesterday for the first time since the c.s.
>has been replaced…what an incredible difference in terms of throttle
>response at idle!!!…this is good!…i saw the old c.s. the key appeared
>to have been inserted incorrectly as was suspected…it just was not
>sitting correctly…so the c.s. has been replaced, the timing belt drive
>gear, the front seal, the main bearings, the harmonic balancer/pulley.
>However…there is an uncertaintay as to whether or not the c.s. bolt that
>came with the new c.s. is the since improved "hardened" bolt. Perhaps
>someone out there knows this information…here is a list of the
>generation of Mazda part numbers as they relate to the crankshaft and
>bolt.
>I was told that the original c.s. part number was:
>B61611300A
>which was altered (improved) and changed to the following number:
>B61611300B
>It is my understanding that the most current version of this improved
>crankshaft is as follows:
>B61711300 (no alpha character).
>In relation to the crankshaft bolt…there have been three successions of
>this bolt too…in the series listed, from first to most current:
>B63011406A
>B63011406B
>B63011406C (most current)
>The part number for the c.s. key…is as follows, with two apparent
>changes:
>B63011317
>B63011317A (most current)
>Does anyone have information which would contradict the above…i’d sure
>love to know…thanks..
>At this moment, the dealership and I are attempting to answer the
>crankshaft bolt question before committing any particular bolt, coated in
>thread-lock, to the crankshaft. But I half expect that by Wednesday of
>next week…i will have the car back…
>Take care all..!!
>Noah
——————————————————————————
Bryan
In response to your question about which c.s key & bolt to use…it doesn’t
matter!
mazda will only ship the most recent part number (which supercedes all
others) as they discontinue stocking all others. As mazda has been working
12 years to fix this problem i would advise you use their most recent
attempt at a solution rather than try to go it your self.
The difference in response you noted comes from the fact that, before
breaking, the cam timing was likely off substantially — so you were not
driving a ‘healthy’ B6 variant engine.
Good luck with the rest of the repair.
Regards,
Brian.
- Hide quoted text — Show quoted text -
In article <19970704145601.KAA29…@ladder02.news.aol.com> noaz…@aol.com (NoaZark) writes:
>From: noaz…@aol.com (NoaZark)
>Subject: Crankshaft failure update!
>Date: 4 Jul 1997 14:56:29 GMT
>First of all…Happy Fourth of July…as of yesterday…my ’90A is still
>in the air at the dealership (literally)…the new crankshaft has been
>installed…there was a bit of a wait for the correct main bearings to
>arrive…i heard the car run yesterday for the first time since the c.s.
>has been replaced…what an incredible difference in terms of throttle
>response at idle!!!…this is good!…i saw the old c.s. the key appeared
>to have been inserted incorrectly as was suspected…it just was not
>sitting correctly…so the c.s. has been replaced, the timing belt drive
>gear, the front seal, the main bearings, the harmonic balancer/pulley.
>However…there is an uncertaintay as to whether or not the c.s. bolt that
>came with the new c.s. is the since improved "hardened" bolt. Perhaps
>someone out there knows this information…here is a list of the
>generation of Mazda part numbers as they relate to the crankshaft and
>bolt.
>I was told that the original c.s. part number was:
>B61611300A
>which was altered (improved) and changed to the following number:
>B61611300B
>It is my understanding that the most current version of this improved
>crankshaft is as follows:
>B61711300 (no alpha character).
>In relation to the crankshaft bolt…there have been three successions of
>this bolt too…in the series listed, from first to most current:
>B63011406A
>B63011406B
>B63011406C (most current)
>The part number for the c.s. key…is as follows, with two apparent
>changes:
>B63011317
>B63011317A (most current)
>Does anyone have information which would contradict the above…i’d sure
>love to know…thanks..
>At this moment, the dealership and I are attempting to answer the
>crankshaft bolt question before committing any particular bolt, coated in
>thread-lock, to the crankshaft. But I half expect that by Wednesday of
>next week…i will have the car back…
>Take care all..!!
>Noah
——————————————————————————
Bryan