Is my trigger wheel secure?

[Yvan]

I have finished installation of my MJLJ setup, and it all runs OK, but I have one question.

On the photo below, you can see how I secured trigger wheel to the pulley. I drilled three (120 degrees apart) holes in ~2mm thick pulley, tapped three M3 threads into the trigger wheel, and used M3 bolts to connect it together. I used some compound that prevents bolts to become loose, and I plan to change the bolts, to use longer ones, so I can put a nut on the inner side as another safety measure.

Trigger wheel is light, and all looks quite secure, but what do you think?

[brentp]

Hi Yvan,

That design should be adequate- but through previous experience I found that a permanent attachment is best. This is what we currently have on our toyota 4AG motor:


A bigger concern is the sensor bracket- it may need bracing. If you have any mis-firings around 3500-4500 rpm, the bracket may be vibrating. Also, check for strike marks/rubbing on the sensor face and the wheel.

Regards,

[Yvan]

I do most of my driving below 3500 rpm (slow city driving), but I did test my setup at higher rpm, no problems so far.

Bracket is made out of 15x15 mm RHS (rectangular hollow steel) ~2mm thick. Perhaps I could fix it to the alternator bracket, or somewhere else, I'll think about it. Thank you for the suggestion.

[brentp]

I forgot to add the picture of our trigger wheel:



One thing you may consider is adding a extra bolts to secure the wheel, otherwise it seems 'OK'.

Regards

[Yvan]

It looks heavy, mine is thin one, it looks like it is not used as dampener, just serves as a pulley.