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ABY Timing Belt Renewal
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That looks like a good piece of kit, that put a few more ideas on the drawing board! Cheers mate.
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Regards the 450Nm = 200Nm + 180 degrees.
Regards the 450Nm = 200Nm + 180 degrees.
I've just done the belt, pump and idler on my 7A engined coupe.........and here's a picture I've taken of the pulley.
I marked the head of the bolt and then torqued it to 100Nm, then marked the pulley.
I then torqued it to 200Nm......and marked the pulley.(The torque wrench used was calibrated about 3 months ago.)
Observing the difference between the 2 marks I then marked the pulley with another 2 paint "dabs".....to give an idea of 300Nm and 400Nm.
It was at this point that I thought 180 deg from the 200Nm mark might be about 1000Nm?!
.....anyway using a 3/4 drive socket,t-bar and small length of scaffold tube, I "nipped" it up a bit and the pic above shows where it finished up. To me it felt f***ing tight.
Incidentally when I slackened the bolt at the start I used a 1/2 inch bar and it broke free 1st try, it had thread-lock on it and hadn't been touched since the belt was fitted 5 years(15k miles) ago. I have the receipt from the garage that done the job-the original bolt was re-used.
Now, I'm thinking maybe the pitch of the thread on the bolt is different from that of the S2 engine??........but I understand that the crank is the same??(yes/no)......so surely the pulley and bolt are the same?
.......anyone?
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200 + 180degrees is more accurate then 450 Nm. Then last 250 Nm can vary alot depending on friction etc. in the bolt thread, where as 180degrees will always be the same.
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That's not a new bolt.
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