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Fixing trigger wheel to pulley
L5W - 20/5/10 at 05:46 PM

Hi,

I picked up a trigger wheel at Stoneleigh and have had a shallow recess machined off the front of my zetec crank pulley to centre the trigger wheel. Is it ok to simply weld the trigger wheel onto the pulley?
The chap who did the machining for me said the pulley machined like it might be cast so I'm not sure if this would cause problems when welding
I was thinking about using my mig to weld small beads in 4 or 6 places round the circumference



cheers,
Lee

blakep82 - 20/5/10 at 06:02 PM

what are those 3 holes i can see in the pulley? if they're threaded, bolt into them

omega0684 - 20/5/10 at 06:33 PM

i bolted mine on using grub screws and loctite

adrianreeve - 20/5/10 at 06:46 PM

I wouldn't weld. If it's cast, it'll fail eventually, and likely distort when you weld it anyway. Drill and tap I'd say.

Cheers

Adrian

L5W - 20/5/10 at 08:41 PM

Thanks for the replies, will go the drill & tap route instead

norfolkluego - 20/5/10 at 09:03 PM

quote:
Originally posted by adrianreeve
I wouldn't weld. If it's cast, it'll fail eventually, and likely distort when you weld it anyway. Drill and tap I'd say.

Cheers

Adrian


Took ours to a professional Welderman, they can do it

big_wasa - 20/5/10 at 09:11 PM

they also have a rubber damper in them. Like a dual mass setup.

I woul drill and tap. Atleast you can move it.

BenB - 20/5/10 at 10:21 PM

I would also suggest tapping and bolting. It might be worth adding a pin and drilling a small hole in the trigger wheel to locate the trigger wheel on the pulley (ie so if you take it off and put it on again the timing won't go all over the shop if you put it on 90 degrees off).