3-A toyota motor (Prince George, BC)

[GLet71]

Not sure if this is the same as a 3 AC:

http://bc.kijiji.ca/c-cars-vehicles-aut ... Z366327727

[dlb]

yup, the 3A is just a different emissions package.

[JRI1988sr5]

the engine that i have in my car is a 3a-h? does the h stand for something special?

[dlb]

says here the 3A-HU was only available in japan but maybe it's the same. most likely the same as above, just a different emissions package or some other minor difference.

http://en.wikipedia.org/wiki/Toyota_A_engine#3A

[JRI1988sr5]

thats crazy do you think that my engine could have possibly been imported from japan?

[Petros]

likely it was a low mile crate engine from japan. Mechanically I am pretty sure all the 3a engines were the same, just external parts, not all emissions, were not the same (I have even seen one with a different valve cover and timing belt cover).

[JRI1988sr5]

someone told me that it could be high compression doesnt seem like it when i put my foot to the floor

[dlb]

haha, "high compression" only in relation to other 3A engines. don't expect any sort of sporty performance out of this engine, period.

[Petros]

I have 11.2 compression ratio, performance cam and a ported head, among many other mods, and it is only slightly faster than a stock one. So a stock 3a from he stock 9.4 CR to 9.8 will hardly be noticeable.

That obsolete 8-valve head is I suspect the culprit in limiting hp, and one reason I have been wanting to switch to the 4age.

I often wonder if a "simple" head swap package from say a 4af (carb version), with a weber, header and a few other tweaks would make for a simple "bolt on" performance increase. likely too much trouble.

[JRI1988sr5]

do any of you know how much torque a stock 3a has versus a "built" one?