Need confirmation 1.6 turbo head

[rabfan]

Hey,
My question is for 1.6 cylinder heads solid lifter ONLY!

As I understand it, in North America the Turbo diesel was introduced in 1983. The cylinder head bolts were Torque to Yield 12mm shank.

Pre 1983 were all non turbo and had non yield torque only 11mm shank head bolts.

The holes for the head bolts in the Turbo heads have a dimension of .520 or 13.208mm as measured on my 1983 turbo diesel head. The yield bolts have an outer dimension off 11.81mm also as measured on my bolts.

My brother has a 1.6 solid lifter head of unidentified year. Using his caliper(which he doesn't trust) he gets a head hole dimension of .5 inches or 12.7mm. If my theory is correct it would seem that this is a NON turbo head.

Can anyone confirm this for me or add any other head differences between SOLID lifter turbo and SOLID lifter non-turbo heads?

It seems like the Turbo torque to yield bolts should fit in the diameter hole he measured but I'd rather confirm this before he ships it across the country to me.

Thank you,
RJ

[blkboostedtruck]

Tyler (burn your money) told me that bevvboy would be the one who would know the answer to that! I to need to identify a head if it's a tru TD head while it is still on the block!
thanks Duane

[rabfan]

I have gathered more info;

Seems the turbo diesel heads had sodium filled exhaust valves while the NON turbo's did not.

I'm fairly certain that the bolt holes are smaller on the NON turbo as stated above as well.

So there's two differences I've discovered for anyone who's looking.

[blkboostedtruck]

I knew that! but how do you tell when the head is still on a car or in a big pile of heads at a swapmeet? what markings on the out side determins that it is a TD head? thats what i wanna learn!
thanks Duane

[rabfan]

Only way I know of right now for the solid lifter units would be to bring your calipers!
Even then, I wonder if that applies for NON turbo post 83 as I'm sure all had the 13mm holes after that date(unconfirmed).