Doing some stupid shit to an old datsun head

[TK]

I've got another junk U67 casting here I'll take some pics off for a before/after comparison.

This motor will be going on Bill Hansons engine dyno in a couple of weeks, so no guess work as to what it makes.

[TK]

Amazing! When doing it all by hand, how to go about making each of the chambers/ports the same?

Experience, practice & measurement.

[TK]

Gotta smash through a freshen up on a set of subi heads this morning, then back onto the datto this arvo.

Hey did almost loose his hand in a machine, maybe he got the doctors too upgrade it.

It got downgraded a bit, I have to take a 10 min break every hour or I pay for it bad at night, probably a good thing tho, before I'd just grind for up to 4 hrs without a break, long term that's not a good idea!
My thumb still has limited movement, it's settled down to maybe 50% of normal movement, fortunately the movement it has is mostly in the arc I need it to be in!

[TK]

Gotta smash through a freshen up on a set of subi heads this morning, then back onto the datto this arvo.

Scratch that, need a cam & seals for the subis, won't get them till tomorrow, so datto is go for this morning.

[TK]

Chambers all done bar final sanding - I'll do all the sanding at once when I'm done with all the carbide work.

Took a few pics of the junk head, it's been messed with & cut for bigger valves, but you get the idea:

[DaveBxGT]

Nice, that looks really similar to what i've seen done to pug 205GTI heads. Except the spark plug position on the pug isn't as nice as that.

[Neeek]

Cylinder head porting porn. Outstanding.

[TK]

Grinding, plus a bit of grinding & some grinding

[CussCuss]

Top work, absolutely fantastic.

I also love how they look like derpy faces...

[PSi13L]

Great work TK!

[Dogsballs]

special hi performance spark plugs

[TK]

Intakes all done bar sanding, nothing new there so no pics.
3x exhausts to go, then on to the intake manifold - I'll have to relocate it higher up on the head & dowel it into position to get a straighter shot down the runner.

[Dark Orange]

Is that a crack?

[DaveBxGT]

Where? I see scribe marks and a few scratches that will disappear when it gets skimmed at the end. Oh in that left hand water jacket. Hopefully just a scratch.

[Dark Orange]

Where? I see scribe marks and a few scratches that will disappear when it gets skimmed at the end. Oh in that left hand water jacket. Hopefully just a scratch.

From just left of centre up and into the chamber. (It obviously isn't, otherwise people far smrter than I would have picked it up)