1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

iding a 12a motor year

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Old 06-20-06, 01:05 PM
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i also cleaned up the good housings, and it has automobiles above the mazda on the housing, and the mazda is surrounded by blue paint or something.
Old 06-20-06, 01:28 PM
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Originally Posted by Jeff20B
That would be a '73 or older engine. I have one too. I also have a '74 '3B' engine which bolts up to any '74-'92 (non turbo) tranny.

That hole at the top of the intermediate plate is for a water temp sender. It's left over from the earlier engines which did not have a temp sender under the oil pedestal. Depending on the model, some got dual temp senders. The 3B engines are the only engines with dual temp senders.
it looked like an egr thing so i assumed thats what it was.

parts for these motors (ie new rotors/housings since i would need a new front set) are hard to find arent they? would this motor be worth rebuilding? do they handle boost well? or am i better off just selling the internals/plates?
Old 06-20-06, 05:25 PM
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weighed the only good rotor and its 10.3 ounces. the rx7 12a weighs something around mid 9s right?
Old 06-20-06, 08:17 PM
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You mean pounds, right?
Old 06-20-06, 08:32 PM
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err.yes. 10.3 lbs
Old 06-29-06, 04:45 PM
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looks just like the 75 13b i pulled from my repu, has all the same crazy ****.
Old 06-29-06, 04:52 PM
  #32  
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want a spare motor (well minus the front rotor/housing since its broken)
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