i recently changed the head on my car and it seems oil is not coming up through the head. what could be causing this problem and how can i fix it. any ideas would help as i wil be pulling head off tomorrow.

probably got a later or earlier head on the wrong block..... im not to sure plenty of the others blokes know....... maybe even try the search button or the wiki

oh that makes sense is there anything i can do to make them suit.

as far as i know you have to possibly drill a hole where the oil gallery from the block thats goes on an angle to a passage in the head..............but ive never done it before so i wouldnt take a drill straight away

http://wiki.datsun1200.com/index.php/A-series_Cylinder_Heads

have a read of this

Any A series head will fit & work on the late block. IE, 1974 & on with rear distributor.

Only A10 & 1200 head will work on these engines 'as is'. [front distributor]
Late heads can be used on A10 & 1200 engines if they are modified to allow oil to get to the rockers.

This is not a big deal & I have seen a crude system where a 1200 head gasket was placed on the head to determine the position of the oil feed hole in the block.
This was centerpunched & a very shallow hole was drilled. [about 1 to 1.5mm] then an angle grinder was used to grind a small trench across the gasket face to provide an oil passage froom this shallow hole to the nearest head bolt hole.

Crude as hell, but it worked. A very steady hand would be a prerequisite.
Personally, I would suggest a milling machine if this method is used.

One of the bolts in the head is DIFFERENT from the others ( small radius ) for allowing the oil to pass - are you sure it is on the right hole ???

You need both:
* the thinner Head Bolt in the middle right side
* Newer head on older engine: Need to drill the oil passage:




Newer head -- no oil passage:



Cylinder Head Oil Passage

if i was to try this drilling hole method could i drill on an angle towards the head bolt and eliminate the need to put a channel
into gasket

also would bolt marked T go on the side were i am drilling this hole (left/spark plug side) or on other side (right side) as it says in manual.

Ahhh, that was your car matt at my workshop the other day....

Was gonna ask on here who's it was, i saw the datsun1200.com sticker....

What did you put on the head gasket? some silicone based silastic? Thats your problem there, i could see it all squishing out the side between the head and the block. You've blocked the hole.

looks good though....nice coupe

take care