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#2
Re: forged pistons on ebay
dattoman_1000
Posted on: 2006/7/13 12:31
Do what bore size are they ?
Do they suit A14 or 15 ? (they have different pin heights) What brand are they ? Do they come with rings ? What comp ratio are they supposed to be ?
#4
Re: forged pistons on ebay
Dodgeman
Posted on: 2006/7/13 13:44
You describe these pistons as being suitable for a14 & A15, which is not entirely correct.
They are for A14, OR A15, but not both as these two engines have different strokes. A14 pistons will pop out the top of an A15, while A15 pistons will not rise to the top of the bore in an A14 engine. The deck height is different in these two engines & the only similarity is the 19mm pin size & the bore size. Do you know just what these pistons are actually for?
#6
Re: forged pistons on ebay
kegs
Posted on: 2006/7/13 19:14
i think dazza is right, becoz i have an a14 block with a15 crank and rods and i think, a15 pistons, so must be able to mix and match it all to work.....
#7
Re: forged pistons on ebay
bobs1200
Posted on: 2006/7/14 1:05
if they are for an a14 they will not work in a a15 unless you use shorter rods which would need to be custom made =$$$$
#8
Re: forged pistons on ebay
Dodgeman
Posted on: 2006/7/14 3:00
Quote:
As has been discussed here many times before, the A14 & A15 share dimentionally interchangeable cylinder blocks & rods, so when the 5mm longer stroke crank of the A15 was used, the piston crown was reduced in height to prevent the top of the piston from sticking out of the top of the block. You can convert an A14 to A15 specs by changing just the crank the pistons & the sump which has four small bulges on one side to clear the crank. The amount of popup on these A14 pistons prevents a simple machine job on them to allow use in an A15, so it would be necessary to use a cu$tom made copper head ga$ket of about 3mm thickne$$.This effectively spaces the head upwards by about 2.5mm from stock. If a heavily reground cam & lifters are used, it might even come to the point where the adjustment of the rockers is not enough & cu$stom pushrod$ may possibly become necessary. Using the pistons of one in the other is quite possible with plenty of work & expenditure, but most people prefer to use the correct part for the engine that they are using. They sure look nice though, & the opening price probably represents a real bargain as it's unlikely that you would get them made to order for anywhere near the price. EDIT. I stand corrected. As per the following post, these can be milled flat as required to make them flat tops, so there is even more versatility here which makes them an even better bargain.
#9
Re: forged pistons on ebay
B110SSS
Posted on: 2006/7/13 23:31
Can you give me an idea on the cost of those rings please.
Also do you have the weight of each piston? Cheers Dave You can view topic.
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