Hi all,
I was just wondering if I was going down the stock efi setup route should I be looking for an a15e head to match my a15 engine that I am slowly building up? or can you get a machine shop to cut out the grooves required for the injectors in an existing head?

does anyone know of a workshop manual which I could find that has all the diagrams for the egi setups?

I know there's awesome info on here it's just nice to have a manual in the garage

Thanks,
Tom

Efi head diffrence was just the injector noch and double valve springs

I got a egi diagram

Hi Tom,

Contrary to popular belief, the plain H89 (double valve springs were the exception) was featured on the A14E (which is the more common EGI a-Series).

The A15E featured the twin outlet exhaust, just like the A12GX and A12T manifold only very slightly better flowing thanks to some slightly larger ports. I believe the A15E featured the H92 cylinder head which had the small injector stream notches at the port mouth (roof).

So, in all fairness you won't have to notch the cylinder head as the A14E featured a H89 without port notches. And looking carefully at the angles there is adequate clearance. I suspect the port roof notches were a later development what benefit they brought I don't know exactly.

I shall endeavour to upload some documentation to this thread, when I can.

Thanks Chris I really appreciate it... and do you know if finding an a15e exhaust manifold would be tricky? Or can you run extractors?

It would be exceptionally hard, and expensive.

Extractors would be fine, it depends what sort of installation you're going to undertake, are you going a full original configuration or are you removing all the EGR excess?

Tom I have four or five A14E exhaust manifolds, were you the same Tom messaging me on the facebook page? If so I did not make the connection, apologies, I will get some pictures uploaded for you.

Here are the first two, others are buried. These both came off A14E, see the outlet angle differences.

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Both manifolds feature two external ports, other than the main outlet port below.

The manifold to the left is pictured installed in the image below. Note the early A14E had a more regular look rocker cover.

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Hi Chris wow thanks for all the information.. is it worth doing all of this on a stock a15 I wonder if an a14 might make a better starting point? I basically want to try and end up with a reliable smooth daily driver hence investiagting stock.. I found an a15e stock ecu and wiring harness but am still wondering if I take you up on that offer re your last setup.. ny concern with extractors would be the old ecu wouldnt know how to handle it.. or would it be better as a starting point to use a megasquirt

Not sure how to remove the emissions stuff actually.. is there something on thr wiki?

It doesn't really matter what you start with. Both platforms are comparatively equal.

The A15 would already have a H89 cylinder head on it. The A14 may only have a H75 head which is a dry manifold type meaning it does not allow coolant through to the manifold.

If you get your setup up and running I would say you would have the first operational EGI setup that has come to life in the recent decade. Lots of people buy and sell and they generally move around the country but few people take it on and complete it. I'm wishing you all the best. My project also stalled as I couldn't source an original ECU.