1 piece would be stronger, and aluminum is way lighter, and it looks better. Especially if you anodize them.
so here's the latest update.
I am almost finished with the plate. I still have to mill a relief on the backside, but besides that it's finished. One thing I'm going to have to mention...
cbn is a negative cutter. not for use with aluminum. that's what the N in cbn stands for.
that's the problem with 99% of automotive machine shops out there. None of them even understand what the names of the inserts stand for!!!!
If you want to know the skinny on machine tools and inserts I'm...
make sure the shop that doing the head knows the difference between negative and positive cutters. Otherwise they'll have fun trying to hit less than 20 ra.
http://www.supramania.com/forums/showthread.php?t=90018
and if they have the correct cutter they can easily get it around 10 or less as...
Here's some eye candy. I'm too tired to post more right now.
These are temporary till I get some aluminum ones made up.
1uzfe sweetness comin right up.
well, they can't be reversed for a -89 supra. the angle is wrong.
oh well... would have been convienant.
as for the tolerences, they're already about .03 to .06 bigger than the bolt so it's pretty wide open there.
Ummmmmmm cmm's are typically acurate within .0001" all day long thank you. (that's a difference of .040 on the hole sizes)
It's so you can't reverse the mounts....... I plan on drilling the hole out bigger so I can reverse them.
ok, so moving along now.......
you wouldn't believe how many black widows came dropping out of this car after I hosed it down with spider spray. 8 big fat ones total!!!!!
but anyhow it's ready to have the engine removed once I can find some friggin time. but anyway. I was doing some...
I'm in cali too, and it just depends on how well you know your smog guy really....
most of them will let a lot of stuff slide if they know who you are. The only thing that my smog guy cares about is that the car passes the puffer test, and that the gas vapor system seals up.
you can just re-thread the british straight pipe thread with a same sized npt tap. I do this all the time. Works great 90% of the time. the other 10% is when the bspt was drilled the wrong size to begin with.
the npt and the bspt's are the samme thread, just one is tapered so it seals up.
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