Thanks andrew, As a most of you would know we all put so much time thinking about and working on our cars. With that, a fair amount of expectation of what the end product might be like.
Im building this engine to save some weight and to get the weight lower in the car. im hoping the engine with all bolt ons inc. turbo will be around 100kgs.
Im certainly looking forward to seeing it bolted to to the dyno and producing some reasonable figures. The math is there but nothing like seeing it!!

Looking at that I'd say a suzuki head of some type.

haha killer,

i like the way you edited your first post to make it look like you knew all along

gold!

so are you gonna tell us or what???

The head in the above picture is different to the top picture. Several differences mainly the cam and belt covers ect

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I still think it's a suzuki head.just not the right model is all.

I dont know any other engines that do port angles like that.

WTF?????????????

come on! the suspense is killing us all!!!

what head is it?

i read a post on this website saying someone was trying to fit a mazda head on the A-series block, but the port angles are strange?

well cut my legs off and call me stumpy!!!!!!

Sorry guys, youve all been good sports.
Its a 2005 honda blackbird xx head. (CBR1100) It had the closest credentials i was looking for. most motor bike heads have dodgy inlet port angles to fit in the frames. These are about the best i could find.
I tried heads of alot of twin cams,
The valves are a little on the small side for an A14, It should make peak power at 7500rpm instead of the bike at 9300rpm.
With the compulsary 36mm turbo inlet restrictor the power will fall of steeply from about 8300rpm.

Alright!! using some Honda bits

So was the headbolt spacing the same on that head?

All the original holes in the block were filled and the block deck modified before drilling and tapping new holes in the block to suit the head. none of the original holes lined up.

i recall saying it was of a bike.didn't i?

You were right on the money early Hypo.
Just wanted to let everyone have a go before i fessed up.

Kudos for originality.
We will be looking on with anticipation at its abilities!!??

For IPRA, the block must be of the same manufacturer as the car (and the same # of cylinders).

ill second the definate A series block

A series block. its not any mazda head, its definatly a head of some motor bike. look at the port angles.

A series block with a rather nice looking head setup. Going from the pics posted so far this car is going to be one tough bit of gear. Keep up the good work
Cheers Andrew

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i think you might be right

A15 with an suzuki head.

dont think so...

looks like a 18R or a 20R toyota motor from a early 80's corona

EDIT: Forgot that 18r heads arent alloy. haha dumbass......the head has weird ports....

ok out with it .....who is your daddy and what does he do???
Why do you tnatalise us with this stuff???
It shouldnt be such a big secret with no IPRA club memebers from Victoria on this site...tell us tell us TELL US

Alright alright alright!!
My dad is a fencing contractor. Happy!!??

it kind of looks like the head off a suzuki 4 stroke out board motor???

mmm, outside the square, I like it..But no cigar, sorry

Its an engineering nightmare!!
Now being twincam the standard cam and therefore oil pump drive is gone so a dry sump system has to be used.
The standard water pump in the way of timing chain so im using (at this stage) a magna pump.
All head stud holes were moved in the block.
Oil drains from the head will be external.
Oil feed goes in to the side of the head.

The list goes on and on and on...
A very expesive way to buid a motor

Very nice work! I'm envious!! I am curious to know why you chose to use the A14 block though. Wouldn't it be far easier to bolt in a CA18 or CA20 ?? Is far as I know, IPRA allows the use of CA's, FJ's and SR's and it is a <2000cc class isn't it ???

Hi, it would have been much easyer to use a CA or SR but i will save about 20 kg`s of engine weight using the A series.

IPRA regs enforce the use of a 36mm turbo intake resrictor which sets the max HP. (about 330) a larger engine aka SR will make more low down torque this also means you have to run heavier gearbox`s and diffs all of which adds weight to the car..
An SR with restrictor will make max hp at about 5800rpm where the A14 will make max hp at about 8200rpm allowing me to use a lower diff gear that will get the torque back..

So, a lighter car with the same torque at the treads!!

Thats my theory anyway...