gon3r

but you actually can do it that way as long as you know the exact distance between two of the bolt holes and where the port hole should be. to do that you just need to take some measurements off the tb which has all the holes fully machined. it is just a bit more work to do it that way because you are picking up two locations instead of one, and you would also need to indicate the two holes in line with each other on the same plane- so it is a 3 step process instead of one. the casting hole is only out of round by less than .5mm so i wasn't too concerned about it... yeah, splitting big hairs i guess.

iceracercrx

I forget why you are not boring stock t-bodys and selling them to people. Make a jig and I would send my t-body up to you.

I like the vise, it's BIG.

Randy

Guy-Fast

Not much money in it. I have been doing it for years. B series stuff you can get aftermarket units that are great quality for what it costs to bore a stock unit and make it worth your time




It was profitable like 5+years ago now your better off selling the mass produced aftermarket units

iceracercrx

I am new to the Honda world. I can see where the -----s have won that battle.

Randy

gon3r

PART 2 ready from chroming!


after welding, facing the tb surface and boring:


after cleaning up the iacv ports. 70mm compared to 66mm


all taped up ready to be sand blasted:



here are some comparison pics...
oem:


smoothed:


blasted:


oem:


smoothed:


blasted:


comparison between the 70mm and 66mm after blasting:


before blasting:


after blasting:



oem:


smoothed and blasted:


ready to be chromed i say!

klyph

Awesome work, what is that manifold off of? I don't recognize it.

Guy-Fast

s2k. I have worked on a bunch of those manifolds but by hand

mugenblacky16

What RPM's do you run that bit at? Does the speed difference depend more on material you are cutting or the bit type?

gon3r

that was running around 1200rpm.

things to factor:
cutter type (hss, carbide, coated carbide, etc.)
material being cut (alum, ms, ss, etc.)
size of cut (.050", .030", .005" whatever... roughing, prefinish, finish cut, etc.)
feedrate on your quill feed for boring. if you are milling, it would depend on the feedrate of the table.

it takes a bit of time to figure out what is the best rpm/feedrate, but like anything else, you pick it up with experience.