Modification of timing housing for twin plug

[wprater]

I did plenty of research, but this one stumped me. Ive already got the engine together, but in order to get the front right lower spark plug in, I need to modify the timing housing!

I can't think of a way to do this while the car is on, so before I take of the housing and re time the cam etc, any creative ideas to fix this while on the motor?

[Henry Schmidt]

Pack the hole with paper towels and use a hole saw. Index it with the cut out in the valve cover.

[Costa P]

Im going to have to do the same thing.

Given that the centre of the hole is pretty much off the edge of the chain cover, Im thinking it would be better to do this without the pilot drill. Henry, are you saying that the hole saw can be guided by the half hole in the valve cover?

[Henry Schmidt]

Originally Posted by Costa P

Im going to have to do the same thing.

Given that the centre of the hole is pretty much off the edge of the chain cover, Im thinking it would be better to do this without the pilot drill. Henry, are you saying that the hole saw can be guided by the half hole in the valve cover?

Yes
It requires care and vigilance but it can be done. You need a hole saw the sane size as the cutout in the valve cover. It will need some gentle massaging after but it beats grinding away with a die grinder.

[wprater]

Thanks for the tips.. I'll be giving this a go today!

[3literpwr]

I used my Dremel with a spiral saw blade. Also used paper towels to catch any debris. Spark plug wire sure seems tight in that spot.

[ChrisBennet]

Since I'm super cautious, I would make some sort of guide for the hole saw. Something as simple as a board that you've cut a hole in using the hole saw already, held in place (by a friend) so the saw doesn't wander.

Like I tell people,"It's not so much experience as it is accumulated remorse."

[Chuck.H]

What Chris says, use the hole saw to make a guide. But I'd go a step further and secure the board. If it was me, I'd use a piece of 1/4" aluminum that I could then bolt or clamp into place - I guess my friends aren't that strong :-)

Chuck.H
'89 TurboLookTarga, 426k miles

[mreid]

I cut mine off with a hack saw. Worked perfectly!

[TimT]

I cut mine off with a hack saw. Worked perfectly!

Or cut off wheel...zip, gone, next

Much ado about nothing

[jpnovak]

Yep, quick cut. Don't forget the engine tin on Cylinder #3

[wprater]

Thanks for all the tips guys! I tried circle saw, but the timing case and the valve cover were not lined up enough and it jumped around on me. I decided against making the holding tools as a guide and went he hack saw route! Very happy with the results!

[wprater]