Stock Engine Swap-in. Having Issues

[FestYboy]

For the $, you're better off swapping in a b6. Start from a better platform.

[Sid_RallyX_82]

Time is a big issue at the moment. It's quicker for me to rebuild than search for an engine (and potentially need to modify things?) and go through smog and CARB, but do u have the link to a list of cars with what engine and trans? Also, still looking for parts list for rebuild

[FestYboy]

Wiki is your friend here: https://en.m.wikipedia.org/wiki/Mazda_B_engine

Since you go through smog, get the 8v sohc B6 short block from 85-90, it's a direct drop in with no mods, use your intake and exhaust manifolds and the b6 injectors. Instant upgrade and no one is the wiser but you.

[Dragonhealer]

We got better results using the B3 injectors. The SOHC B6 is a dynamite easy swap!

[Sid_RallyX_82]

Ok, I will look for one, but it's first come first serve for me. Parts for rebuild vs b6

[Sid_RallyX_82]

Do the b3 and b6 use the same block? Could I just bore out my b3 and use b6 internals?

[Sid_RallyX_82]

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Also, this "later version" of the b3; was it sold in California? Or even the US?

[FestYboy]

Do the b3 and b6 use the same block? Could I just bore out my b3 and use b6 internals?

No, the b6 is a Siamesed block vs. the b3. The difference in bore size would force you into a custom sleeve system. Not practical.

[ATTACH=CONFIG]20690[/ATTACH]
Also, this "later version" of the b3; was it sold in California? Or even the US?

Not in North America... It was a 16v version available to everyone but us.

[Sid_RallyX_82]

Damn. Well, my search goes on...

[FestYboy]

Please note that other than the bore size/style, the blocks are practically identical. All mount points are the same, and technically, the heads can interchange (b3 head on b6 block works easy, the other way round causes some valve clearance issues)

[Sid_RallyX_82]

So far I've found the best part about rebuilding a b3 is that it only takes one person to get it in and out of the jet washer.

[Sid_RallyX_82]

I don't recall if I've asked this before, but does the B6 ex manifold fit on a b3 head?

[FestYboy]

First gen b6 will swap onto b3, 2nd gen will not unless the upper outside tabs are modified for the change in stud position.

[Sid_RallyX_82]

What years are first gen?

[Sid_RallyX_82]

Looks like first gen was 8 valve, ~1985-89 ?
Second gen mostly 16 valve, ~1989+ ?
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