Timing Belt change on '94 90 Quattro

[Megan Bigelow]

it's a good idea to replace the pump since you are in there. water 
pumps and timing belts are usually changed together. cheap insurance. 
:)

i dont know much about water pumps but i would think that if it seized 
the engine would then overheat and seize or damage itself, although huw 
and marc did manage to run a 4kq engine for about 20 minutes without 
oil or coolant :)

if the belt snaps and you have a non-interference engine, you just have 
to replace the belt. if it's an interference engine, valves and piston 
may collide and then it's all up to the gods...

poking around on the internet, it looks like the AAH is not an 
interference engine, but others here will know better than myself.

megan




On Jul 2, 2005, at 11:14 AM, harchris wrote:

> I am doing a 2 head R&R on a '94 Mod 90 Quattro ( AAH motor ) for a 
> friend. It
> has 218,000 km on the clock ( 136,000 mi ). I am doing the timing belt 
> while
> I'm there. I don't know when it was last done, but the belt looks 
> pretty good.
> no teeth missing, no obvious cracking.
>
> Should I replace the water pump? If the water pump seizes, will it 
> stop the
> belt, and if the belt snaps, will the valves interfere with the 
> pistons??
>
>



On Jul 2, 2005, at 11:14 AM, harchris wrote:

> I am doing a 2 head R&R on a '94 Mod 90 Quattro ( AAH motor ) for a 
> friend. It
> has 218,000 km on the clock ( 136,000 mi ). I am doing the timing belt 
> while
> I'm there. I don't know when it was last done, but the belt looks 
> pretty good.
> no teeth missing, no obvious cracking.
>
> Should I replace the water pump? If the water pump seizes, will it 
> stop the
> belt, and if the belt snaps, will the valves interfere with the 
> pistons??
>
> TIA
>
> BTW, thank you to those who answered my recent query re the motor 
> model.
>
> Cheers
> George
> --------------------------------
> George and Dot Harris
> harchris at smokesignal.net
>
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