912 head difference

[58herbie]

Hello,

Whilst stripping my 68/69 engine down for top end overhaul i have found one head has bolt's in the fins over the exhaust valves on both sides and the other doesn't. The one that has the bolts also has no part number is this a repro head?? what are the threaded holes with bolts in for a temp gauge etc?

Cheers

Jon

[sdimbylow]

Hi Jon,

Any chance of some photos, not too sure exactly which area you are talking about?

Steve

[58herbie]

some pictures.

with bolts







without.



part number on head without.



only marking on head with bolts



hope these help

[Mr Pharmacist]

According to the maestro's ABC of 356 912 engines it looks like you might have an earlier head (the one without bolts).

I think! There isn't actually a head like yours listed in there though. So it might have been a replacement head - there were 2 types of replacements available, one for early engines and one for the later engines

[cab66]

Hello,

Whilst stripping my 68/69 engine down for top end overhaul i have found one head has bolt's in the fins over the exhaust valves on both sides and the other doesn't. The one that has the bolts also has no part number is this a repro head?? what are the threaded holes with bolts in for a temp gauge etc?

Cheers

Jon

I think the head with threaded holes is a 1968 us 1year only
head and the holes is for a smog control airpump.should have a part number though.

Peter H
Denmark

[atomman]

yep i think cab is write from what i can remeber they are for smog control

[tim78]

http://i221.photobucket.com/albums/dd19 ... mpcopy.jpg

Here's mine. Its 1968 and I believe part of the anti smog system

[58herbie]

thanks,

that answers that one.

jon