Oil drains from the back and the front of the head are handled with brass fittings, nothing complicated, will be all available in photos when ordered.

The miata guys in the USA use stock pistons for that power but also mill the head a crazy 2mm off the face to increase compression to around 10.5:1 when going max NA as the chambers are quite big on all the B6 heads. On an A15 engine block the choice for 78mm pistons are so many that many compression ratios can be had for all kinds of applications.

Just got the phone call from the Genius that has made this possible. Its on the truck today and I should get it by next week sometime.

Ive got an a15 block in the shed waiting for this setup.
Now just got to find that pot of gold so that I can make this happen!

Hey guys. Im new to this forum business. A 48 year old coote that loves Datsun 1200 coupes. I have two rally cars in New Zealand. I would like to know how I get hold of one of these kits to convert one of my A12 engines.

PMd you GremlinR

D,

Do you have a picture of the offset machining done on the A12? I have the Z-5 head and a B head from a 1.6 Miata. Both the heads alignment are not symmetrical to the Datsun bore centers.

Matt D.

I dont but buying the kit includes the head gasket to bore properly.

Im sleeving an early A12 block for 81.25mm bores 2mm left for future
boring/hoining but not worried cause sleeving costs 550aud for an early block.

With a slightly modded A14 crank Ill be happy with 1597cc

I was noticing that if I had the A12 block machined for over sized pistons with offset bores it would clean out the walls between the water jackets and cylinders on 2 and 3.

I can see why sleeves are needed. How did OP overcome this? Or did the Familia head he used have differing combustion centers?

Is there enough space along the larger pistons wrist pin to allow off center connection since the Crank to Connecting Rod has no room?

The kit would be nice to buy but being a machinist/designer and owning a CNC Mill... I kinda want to design my own front plate and cover. No disrespect to OP is intended.

Matt D

Matt good to hear you want to do your own version, just remember there is way more involved to make a front plate than meets the eye. You might be better off doing your own version based on the GA16DE Nissan head which Feral Erol had matched up to an A series sometime back.

A member went to 82mm sleeves A15 offseting 2 and 3 bores towards each other and this made the A series head a problem to use but no probs for the GA16de head it was intended for.

I would suggest you use the GA16DE head which are Nissan and use the Z5 pulleys which are tiny in diameter and would look very smart. The GA16DE head has the issue of chains but Im sure you can work out a plate so you can use pulleys instead much like the Mini head that uses the chain driven BMW head

That way the stock waterpump could be used like here on the Mini A series below
http://www.google.com.au/imgres?imgur ... 65&page=1&start=0&ndsp=24
http://www.force-racing.co.uk/uploads ... 1/1bmw-kit-cam-pullys.jpg




http://www.bjautobits.co.uk/engineeri ... rvices-bmw-kseries-16.htm

http://www.force-racing.co.uk/uploads ... 1/1bmw-kit-head-plate.jpg



http://www.force-racing.co.uk/uploads ... o1/bmw-kit-head-plate.jpg



http://www.force-racing.co.uk/uploads ... w-kit-jackshaft-pully.jpg



http://www.force-racing.co.uk/bmw-k-100-conversion-kits/

hi guys. its all gone quite on the twin cam head lately. still got 3 cnc front plates left.$840 + p&h call me on 0407861621 ROB

Keen but cash poor

laybuy ?... lol