crankshaft confusion

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Morien Morgan - 13 Aug 2004 22:24 GMT

Hi,
Prior to buying my eunos (imported to britain) i read the miata net garage
article which was clear and informative. armed with this info i bought a
1991 eunos. the crank bolt had the large shoulder flange and the pulley had
8 slots. yesterday i had a new crankshaft oilseal fitted. in conversation
the mechanic ( a sensible and careful chap) described the shaft as short
nosed - end of saft terminating aprox half inch short of pulley face and key
extending beyong end of shaft. I'm confused - any ideas?
Cheers
Morien

Reply to this Message

L. Santer - 19 Aug 2004 09:12 GMT

> the mechanic ( a sensible and careful chap) described the shaft as short
> nosed - end of snaft terminating aprox half inch short of pulley face and key
> extending beyong end of shaft. I'm confused - any ideas?

On both the 90 and the later 91 crankshaft design, there is a gap
between the shoulder of the bolt and the end of the crankshaft. On the
90, the bolt clamps directly to the timing gear. On the 91.5, a larger
diameter bolt with a wider shoulder clamps a round plate that sits
over the end of the timing gear.

The key is the number of slots and you have 8, which means the later
design.

Reply to this Message