differences between 79-82 & 83-85 12a
#1
differences between 79-82 & 83-85 12a
i knw mazda made some changes and i have an 83 does that mean i have to get a 83 12a for it to be a direct swap. pluss i've heard in 83 they got lighter rotars and these motors respond to modifications better then the earilier models. any wayz if i buy a used enging is there any way i can tell what year it came from b looking at the outside of it???
#2
Absolute Power is Awesome
<82 had heavier rotors and a lighter flywheel
>82 had lighter rotors and a heavier flywheel
I've never heard that one is easier to mod than another but the 83-85s had a poor oil cooler.
>82 had lighter rotors and a heavier flywheel
I've never heard that one is easier to mod than another but the 83-85s had a poor oil cooler.
#3
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Get the 83-85 12A engine, put the aftermarket flywheel on it and swap for an earlier or 2nd gen oil cooler.
The best of both worlds... Easier to do that than find lighter rotors and counterweight for the earlier engine.
The best of both worlds... Easier to do that than find lighter rotors and counterweight for the earlier engine.
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Is the place where you put the oil filter attached to the engine?
If it has fins on it, it's 83-85... if not, it's earlier...
EXCEPTION: The filter mounts are changable, and it is a popular mod.
Look for tubes that are cut off for the coolant to the late style oil cooler.
If it has fins on it, it's 83-85... if not, it's earlier...
EXCEPTION: The filter mounts are changable, and it is a popular mod.
Look for tubes that are cut off for the coolant to the late style oil cooler.
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when i changed my s1 engine over for a s3 engine the only difference i could find was the engine number was in a different spot and the water outlet at the back of the engine near the spark plugs was a 'T' so it could send water to the crapy oil cooler.
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Jeff20B
1st Generation Specific (1979-1985)
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09-16-18 07:16 PM
12a, 79, 82, 83, 85, difference, diffrences, engine, find, fly, mazda, modifications, number, rx7, wheel