Stuff is expensive to get done in Euroland these days!

I worked at a place called ''Rovercraft'' a specialist V8 workshop.
We very rarely did iron head work since the Millennium...

Seat work was always Aluminium heads and guides were 'knock out and re-fit new ones.
The last set of iron heads I had done was approx £250 to fit seats and 3-angle cut, per head!

Guides are always worn and some heads are on their second or third set of guides...



But now I see a different issue with heads!

Worn out 'stainless steel' exhaust-valve 'stems and seats', at an alarming rate...

The stainless is much softer than the older steel/alloy exhaust valves?

Now there is 'head warpage' too!

I took a set of Mopar performance '452 aluminuim' heads off a low mileage 440ci engine and one head was badly BENT/BOWED etc!

It was in fact 1/2mm which is 0.020 thousanths... fan

Once it had been machined flat the outer combustion chambers were way out of cc spec.
So you have to reseat the valves to match the centre cylinders and re-shape the chamber to get the volume right again.
Then you have to re-machine the rocker pedestal channels as they are 0.020 bowed as well...

All in all it was much work I would have called it scrap myself... spank spank drumhit

You fix one problem and get another... drinking

Last edited by Gtxxjon; 12/17/21 06:52 AM.
Carpe diem, quam minimum credula postero, thanx Horace!

There’s no point trying to fix stuff that ain’t broke,,, 'but if ain’t broke',,, you is not trying hard enough...