Ahh thats right. The A10 has shorter rods again at 117mm. But u would
still have to shave 1.7mm or so off the pistons for clearence..
Scott
Davo
-----Original Message-----
From: Andrew Denniss <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
Date: Saturday, 20 January, 2001 6:02
Subject: Re: A12
>Hey davo- james I think he uses the rods out of a A10 to get the piston
hight
>right :) A lot of the rally guys are doing this as they have to use a A12
block
>to keep within the rules for there class.
>Andrew.
>
>Davidson wrote:
>
>> Wouldnt you have to shave the A12 pistons 3.5mm if you were to fit an A14
>> crankshaft?? As there is a 7mm difference in stroke. Makes me wonder if
>> the A12 with A14 crank would rev harder due to the con rod length
difference
>> over the A14/15. Now that i think a bit harder the block height
difference
>> doesnt really matter too much if you have a shorter con rod, therefore
still
>> giving a similar capacity as the A14/15 bored out(if u can safely bore
them
>> to 240-260thou!!) , and posibly a few more rpm??
>>
>> James, my A14 head is around at Jeffs atm and only met him last week. He
>> seems like a very nice bloke and knows exactly what he's doing when it
comes
>> to the A series. I wouldnt have taken it anywhere else as he built the
>> engine for Andrew a couple of years back!!! cya's
>>
>> Scott
>> Davo
>>
>> -----Original Message-----
>> From: Andrew Denniss <[EMAIL PROTECTED]>
>> To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
>> Date: Friday, 19 January, 2001 19:20
>> Subject: Re: A12
>>
>> >Hey James My engine builder-Fixer can fix this problem for you he
strokes
>> the A12
>> >with a A14 crank and bored to get nearly 1500cc if you want to spend the
>> money its
>> >possible to get 150+hp from this :) Give jeff a ring JTS 02-96238826 he
is
>> a good
>> >bloke and can probably do one too a budget.
>> >Cheers Andrew
>> >
>> >James & Chirryl wrote:
>> >
>> >> The reason for using the A12 block is to avoid getting an engineers
>> >> certificate, since the engine is to replace an A10 (988cc). Though now
it
>> >> seems a better idea to do it properly, and get some disk brakes, an
>> >> engineers certificate and use an A14/15.
>> >>
>> >> > I dont know the exact figure but i know the A14/15 can be bored max
>> 140thou.
>> >> > The bore on the A12 is 73mm and A14/15 76mm. So theres allready
approx
>> >> > 120thou difference between blocks. So as a guess, around 200
thou???
>> Maybe
>> >> > more? But i see no point boring a A12 block as the deck height is
15mm
>> >> > shorter than the A14/15 giving a lower overall capacity. Maybe
someone
>> else
>> >> > has an exact figure...
>> >> >
>> >> > Scott
>> >> > Davo
>> >> >
>> >> > -----Original Message-----
>> >> > From: James & Chirryl <[EMAIL PROTECTED]>
>> >> > To: [EMAIL PROTECTED] <[EMAIL PROTECTED]>
>> >> > Date: Thursday, 18 January, 2001 15:42
>> >> > Subject: Re: Drag racing pics
>> >> >
>> >> >
>> >> >>
>> >> >> gday list,
>> >> >> Does anyone know how far an A12 block can be safely bored out to?
>> there
>> >> >> seems to be a fair bit of meat between the cylinders . But I don't
>> think
>> >> > it
>> >> >> would have been done before, as most poeple use an A14\15 block as
a
>> >> >> starting point.
>> >> >>
>> >> >> thanks,
>> >> >>
>> >> >> James.
>> >> >>
>> >> >
>> >>
>> >
>>
>
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