Well...this is getting ugly isn't it !!!!

Like you R-Fast, I don't want to be drawn into a fiery depate. However, there is a lot of negative flak seemed to be directed at my buddy Greg (aka Vixen).

I'll just add this...Greg is a veteren amoung us who has worked many years for the factory datsun racing team. I guess its safe to say he knows a thing or too! Especially A12's. There are many people who are happy with the cars and engines he has produced.

I don't think the pistons are weak, but I've never played with A12's. A decompression plate will reduce the squish clearance and may infact promote pre-ignition rather than retard it. What's the puropose ?? Turbo ???

Hi all,

My engine rebuild manual tells me an A14/15 con-rod is 133.00mm long +/- 0.05mm.

I was hoping someone out there in datto land could tell me what other con-rod lenths are. ie A10, A12, A12A, E15, L16, L18, L20....

Did you use sealant on the rear main bearing ?? The gregories (or similar) rebuild book I used seemed to leave that vital peice of information out of it.

The rear main bearing cap has chamfered corners on it. If you don't use a good quality silicon type sealant in the corners as you assemble it, it will leak guarenteed !!

It will run down the foward face of that plate between the engine and box.

I'm not sure you could do a proper job at fixing that with the engine in the car...we pulled ours out!

PM sent, Re webbers.

Hi everyone,

I've been waiting eagerly for the event info for some time now. I've never raced at bathurst before and its right up there on the 'things-to-do-before-I-die" list.

Does anyone know where runs start and stop each day ?? I'm keen to see how much of the track we will actually get to use!!

It would also be great to see Benny & R-Fast and meet the rest of you.

Daniel (& Michael)

There's so much you need to consider to get a hp estimate. But I would guess you SHOULD be able to develop 85-90hp at the wheels with an A14 in 'hot-street-trim', running premium unleaded. Thats without spending major dollars.

To get the maximum out of any engine, you need to consider things such as valve dia, port dia, intake port length, ex header length & dia, cam timing, ig timing,......etc.

A lot of people throw together an engine based on the 'bigger-is-better' theory. Sadly, people spend thousands doing this. But if you understand what is going on, and tune your engine for best performance at a certain rpm so everything is working together you will achieve maximum bang-for buck.

Probably the biggest difference between the SU's and the Webbers is the intake port length, taper (if any) and the smoothness of the airflow path. Hypothetically, If those things are all equal then the Webber still has an advantage as it creates a more refined fuel/air mixture at full throttle.

I've used both. I loved the SU's throttle response and low-rpm torque and the SU's are so easy to tune. However, the webber is clearly a winner (in my opinion) at full throttle. But there is nothing 'wrong' with either.

Ben,
my a15 makes 132hp at the wheels. I can run your prospective engine configuration thru an engine simultaion program if you would like me to. There is a lot of information required for this process such as head flow figures. If you are willing to spend a couple evening gathering all this info, it will provide quite an accurate estimation of your engine's performance.
Daniel.

I'd like to know if a J15 crank fits into a A14/15 block!

Hi NIS15L
I'm interested in a new front bumper, any webber or dellortoes (you didn't say what type of carbies), a complete 1200 ute diff, and the automatic box - Just depending on condition, price etc.

I'm in Newcaslte. PM your phone number and I might come and see what you've got.
Daniel.