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   All Posts (Mattndew76)


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Re: where to get zed style rear spoilers for kb10 and kb110's? (1000,1200 coupe)
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Posted on: 2014/8/8 9:34
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Re: States 1200 Coupe. (Oregon, US)
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Got my Timing belt drive bits today.

The Mazda crankshaft timing gear ID is 27.051mm The A12 crankshaft drive post is a 28.575mm diameter.

I will be making a 7075 gear with the Mazda profile but a precision bore to match the key seat and crank shaft diameter of the A12 crank.

Same story with the timing pulleys for the camshafts as well. Might as well do away with as much parasitic drag as I can ....

Posted on: 2014/7/26 2:22
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Re: a15 block mazda head
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I was noticing that if I had the A12 block machined for over sized pistons with offset bores it would clean out the walls between the water jackets and cylinders on 2 and 3.

I can see why sleeves are needed. How did OP overcome this? Or did the Familia head he used have differing combustion centers?

Is there enough space along the larger pistons wrist pin to allow off center connection since the Crank to Connecting Rod has no room?

The kit would be nice to buy but being a machinist/designer and owning a CNC Mill... I kinda want to design my own front plate and cover. No disrespect to OP is intended.

Matt D

Posted on: 2014/7/11 5:21
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Re: a15 block mazda head
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D,

Do you have a picture of the offset machining done on the A12? I have the Z-5 head and a B head from a 1.6 Miata. Both the heads alignment are not symmetrical to the Datsun bore centers.

Matt D.

Posted on: 2014/7/10 6:26
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Re: States 1200 Coupe. (Oregon, US)
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No sir. I am engineering my own stuff for this build so I wont be using the D swap kit. I have been reading through the Mazda head swaps posted on the 1200 forums though. Seen some cool builds.

Posted on: 2014/7/5 8:16
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Re: States 1200 Coupe. (Oregon, US)
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This is what I have started to do so far. Acquired a donor A12 and bought a 1.5 liter Mazda Z-5 head with a single drive pulley DOHC.

Its slow going but I am designing and making things work.

I marked off all the spots to be plugged and to be saved. The potential to modify is marked in Orange.

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Posted on: 2014/7/4 8:33
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Re: States 1200 Coupe. (Oregon, US)
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Its a custom one.

I am milling everything but the velocity stacks on my CNC. The stacks will be printed on a Hi-Def 3D printer with a metallic plastic mixture.

I am not sure what the filter is from but I searched the Goog until I found one that met my standard for design. (20.3125" X 9.500" x 4.00")

Posted on: 2014/7/4 8:17
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Re: States 1200 Coupe. (Oregon, US)
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No sir. That is much larger than the Datsun Hitachi air cleaner case.. The filter that will fit that is a K&N E-3035

Posted on: 2014/7/3 9:52
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Re: States 1200 Coupe. (Oregon, US)
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Doing some design work before I start machining my intake system for my CVK carburetors.

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Posted on: 2014/7/3 8:32
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Re: States 1200 Coupe. (Oregon, US)
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Started working on an A-Block to Mazda Head engine for the 1200.

I was able to see where the Mazda 1.5 head gasket lined up on the A-Block. Still need to go purchase a head from the local salvage yard. Guess the only salvage depot in town that has Mazda heads wants $150.00 USD. Seems a bit steep for a risk of being scrap.

Posted on: 2014/6/5 16:15
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