doh! yeah, newer. Not sure exact age but wern't they no released on Aust till about '78 or so?

The car & A12 are 1973, the A14 is obviously older.

I was thinking about the E15 conversion, using a whole E15ET though. Might be worth picking a blown one up to compare...

an OHC, EFI, supercharged AE15 hybrid would be sweet...

I have an A14 block already, but it's after 1975 hence I need a charcoal canaster & other emmisions crap to legally register the car. I'm trying to get away without that crap.

...are we meant to have alloy heads? The head appears to be the 71-73 pre emmisions round port head (no label) and it's all shiny & a magnet doesn't stick to it. It indeed it's colour looks just like the head off my VR4 (except 1/2 the size) and it weighs next to nothing. Am I nuts? I thought these engines had iron heads?

Now more interesting question. For street legallity reasons (pre-emmisions), is it possible to machine out the A12 block to fit a A14 crank/rods & E15et pistons? If the engine is pre-emmisions I can get the supercharger street legal way easier.

With the dizzy & hence cam being slightly different, is that an issue?

I assume using the A14 head would be the go, unsure of it's type yet.

Thoughts?

Thanks in advance.

I searched for harmonic & other than this thread I only got one other hit which was unrelated. :(

Does anyone know what harmonic balancers fit? I might just have to take the stock pulley off & match it up with something.

reason I suggested it is that it's a knock suppressant, so it may negate the need for a regraph. Otherwise if you change it you may need to advance the timing again once the WI is up & going.

Thank god for public healthcare in Aust, if it's an emergency they sort out for free, it's only elective stuff that takes 3-4yrs & costs a bomb

At least you have your health I suppose - I hope you're insured

You do have water injection don't you?

The headers that came with the A14 are very similar to what you describe, I'll measure them up & compare.

OK, I've had experience with NA exhaust sizings and turbo exhaust sizings - what do you do with supercharged cars?

For the A14 NA cammed etc, I'd go a 2" mandrel bent system.

Turboed it'd be 2.5" straight through, maybe 3" dump to firewall.

What about with the blower? I assume it needs more size due to the extra gas flowing through the engine, is 2.5" overkill/would 2" restict it?

I'm making my own out of stainless with mandrel bends, so no oversizing for pressbends reqd.

Opinions? Abuse? Comments?

Edit: Oh yeah, I haven't measured my headers yet - they are 4 into one design, about 35-40mm primarys so I assume 50mm collector - I'm only guessing though from a quick look downwards through the engine bay. If NA I'd go with the collector size for the rest of the pipe, but being supercharged I just don't know.