Revson

iTrader: (60)

I tried serching for this and no luck. Is there a site or chart where it shows how much you need to mill off to get a certain cc combustion chamber? Or do you just mill a couple thou and keep checking it?

DaddySS

Each .006 that you mill = 1cc. So for instance to take the 66cc chamber to 63cc mill .018.

Revson

iTrader: (60)

Thanks, thats just the info I was looking for. I plan on milling them myself at a friends machine shop.

PREDATOR-Z

Make sure you use the right equipment to mill the Alum heads and for a nice finish.
I hope you have done this before.

orangeapeel

iTrader: (18)

Doesnt sound like it.....

N4cer

iTrader: (11)

I can see it coming in the FOR SALE section:

"AFR paperweights: kinda wobbly on table, but you can have them for a deal at $2100."

Revson

iTrader: (60)

So are you guys saying that a file and a chisel won't work???

BriancWS6

iTrader: (18)

Well the thing about milling heads is that you can't take a few cuts to get the speed and feed set right. Mine are milled .024 and I am sure that wasn't acheived by taking 3 or 4 cuts. You better have that **** dialed in before the cutter touches the aluminum, cause it will be too late afterwards.

1stz06

iTrader: (18)

This is great info. I PM'ed Mamo about this yesterday. Out of the box the AFR 205's are 66 and mine are milled .020 which means I am at 62.67. Very nice!! Need a little a little more milling for the G5X3 then.
Thanks,

J.R.

orangeapeel

iTrader: (18)

So you are going to flycut then?

davered00ss

iTrader: (4)

You should be able to order them milled.

Keenov

iTrader: (5)

If you would have looked at the company that sells these heads website, you could have found the answer. Plus you get a lot more info

http://www.airflowresearch.com/205_mongoose.php

Angle Mill (milling available) .008" per cc
Flat Mill (milling available) .006" per cc

1stz06

iTrader: (18)

LG says you don't have to flycut but I am going to just to be safe.

N4cer

iTrader: (11)

Smart move. You might as well while the heads are off. That way you have options to go bigger on the cam later on if you want.

PREDATOR-Z

I think I sorted out the confusion about flycut. I believe LG is refering to the AFR 225 62cc.

AFR 205 milled .030 to 59 cc with .040 gasget, requires flycutting. I'm 99.99% sure of that. (I leave a little to Lady Chance)

Revson

iTrader: (60)

https://ls1tech.com/forums/showthrea...highlight=g5x3


Post #8 from Louis


59cc AFRs, G5X3, .040 gasket, no need to flycut.