I've got a mid-term on thursday, so I'm studying pretty hard for that at the moment.. But occasionally when I encounter brain-fade I pop out to the garage for an hour or so. Not much time to get anything done, but it's nice to make little bits of progress.
Today I continued work on the manifold. I needed to cut the holes in the plenum baseplate for the runners to pass through. As these holes are pretty big, and overlap, it was always going to be tricky with a drill or similar. A friend of mine suggested using a chassis punch. He works at a hydraulic tool supply company, and loaned me the gear. The punch made short work of the job, and gave a bloody awesome result!
First job was to mark out where the holes need to actually be. This was pretty easy to do once I marked out a centerline. I used the flange as a guide, a little measuring, and the hole centers were easy to fine. I drilled these points out to 10mm for the chassis punch to fit through.
I checked these marks against the machined runners, and it all lined up.
This is what the chassis punch looks like:
The ram pulls the center support down through a cup that is marginally larger than the cutter, which is threaded onto the top of the support... Pulling the cutter into the cup, through whatever is in it's way. I first had to take my 10mm holes out to 3/4":
This was so I could fit the bigger center support in the punch, which happens to have a shaft size of 3/4". With the bigger chaft in place, I could use the correct size cutter:
After cutting all these holes, I was left with this:
lining this up on the flange showed everything to still be pretty concentric.
This is about where it will sit on the runners:
With it here, there is still enough room to get a decent plenum area in between the strut tower, yet still be able to install or remove the distributor.
I plan to do a bunch of study tonight, so maybe i can sneak a couple more hours in the garage tomorrow to further progress with these bits:
I also dropped my wheels and tryes off to be mated this morning, then picked them up on the way home. Please dont laugh, the car looks bloody awful at this height. When I'm back at work next week I'll order the D2's for it and sort that issue out! The wheels would look nicer in silver I reckon, but Bronze is fine for now :).
There are 25mm spacers all round. I'll leave them as is till It's at ride heigh and I can see what sort of clearances there are. I bought 25mm spacers so I've got meat there to machine down to get them just right :).