B6 question

[blitzbuggy]

i have been mulling this question over and over in my head about a b6. My dilemma is this, there are no b6s for sale in my area( I find that weird) anyway, then the idea came into my head, what if I were to buy an engine from my local wrecker? milage may be unknown, but thats ok. My plan was to ask if i could build up a b6 8 valve to have some serious performance,

I Have connections at machine shops that charged peanuts for work, maybe punch out the block to the safest limit available, maybe 30-60thousanths over, ( so around 1.7L) install some forged pistons, deck the head another 60 thousandths as well, lighten the flywheel abit, install a raunchier cam, and a better valve job( 3 angle, or 5?) port match every thing and polish the intakes, and of course cold air intake header and exhaust! (:albino

now my question is do i relocate the intake to the opposite side that is now on the b3?
and does it matter what b6 year i get?? from what i under stand the b6 is a direct swap.
the total point for this swap is for a daily driver and not a race car,
Let me know your comments,questions or concerns. :p

[hotfordcat]

Early B6s are almost a direct bolt in. Don't have to relocate anything. I used the early model 1986. Installed the B3 flywheel, and Dizzy. Wired the B6 injectors into the B3 harness, and changed the ECU. Done deal. I even used the B3 VAF. Don't know much about the 90+ B6s.

[blitzbuggy]

ok cool, i was unsure what year would be easiest, Thanks hotfordcat!! now that i think of it, this car may visit the track, once or twice a year probably the circuit track, not the drag strip

and as for the injectors I assume you mean splice the b6 injector plug end into the b3 harness, am i correct?



there is a 323 turbo sedan for sale in my area but he want to much for it

[hotfordcat]

ok cool, i was unsure what year would be easiest, Thanks hotfordcat!! now that i think of it, this car may visit the track, once or twice a year probably the circuit track, not the drag strip

and as for the injectors I assume you mean splice the b6 injector plug end into the b3 harness, am i correct?



there is a 323 turbo sedan for sale in my area but he want to much for it

Correct!!!

[freshtiva]

If you use a newer B6 you dont have to splice the injector harness. I used both the B6 VAF and ECU. As for routing the intake here is what I did.

[blitzbuggy]

nice!

so i need the ecm and the big box where the air filter go(the alluminum thing?)

[blitzbuggy]

also can i make this thing a SOHC 16 valve( if i found the right head?

[blitzbuggy]

also i was reading and found out the 1986-1989 engine has 103hp and 92 ft lbs of torque, and the 1989 and up only had 83 hp and 95 ftlbs of torque, can any one varify this?

[Safety Guy]

All SOHC B6s in the U.S. were rated at 82 hp. My preference is for the newer engines, preferably 1992 to 1994 so you be sure and get the large crank nose for a little more structural "peace of mind."

You might be getting the B8 SOHC/16 valve engine mixed up with the B6, because the B8 is rated at 103 hp.

As for putting a 16 valve SOHC head on the B6 block, I suppose you could, but I'm not sure what that would involve and whether or not it would work. I think the B6 16 valve as in some MX3s was rated at 88 hp.

Fresh, it looks to me like you used the B6 injector harness. Or did you just use that straight plastic runner with your B3 harness inside it? (I used my B3 harness with the B6 injectors as it was for both my swaps.)

Karl

[iceracerdude]

There are two different intake manifold types, the earlier ones look exactly like the 1.3, it's the later ones that look like that picture above. You want the/a b6 ecu (b61k). It will run on a b3 ecu, and you will feel the bigger engine, but with the b6 ecu it will really come alive. And if you're going to do all that other stuff like a 3 angle, 60 over, port matching, cam, cai etc, why in the world would you ask about the stock airbox!?
Or do you mean that "aluminum vaf thingy" lol

[freshtiva]

Fresh, it looks to me like you used the B6 injector harness. Or did you just use that straight plastic runner with your B3 harness inside it? (I used my B3 harness with the B6 injectors as it was for both my swaps.)

Karl

I think I used the B3 harness, it plugged right into the B6 injectors. No need to splice.

[Safety Guy]

Thanks Fresh. Do you remember taking the B6 harness out of the long black plastic piece and putting the B3 harness with it? That's what it looks like to me. Here's a pic of the two harnesses together:



The bottom one is from the B6. Your picture looks like you still have the rigid black plastic "holder" thingie, for want of a better term.

I just attached my "loose" B3 harness to the B6 injectors.

Karl

[freshtiva]

Yeah thats what I did ( use the black channel ). I did have to untape the harness to pull out the two wires that go to the IAC, I needed a little more slack with the different intake.

[Safety Guy]

Thanks for explaining! It looks to me like you used your B6 FI harness after removing the IAC plug and wires. Note the green intake plug (not sure what it's called, but it plugs into the top of your intake manifold) which should have come from the B6 (as opposed to my black B3 intake plug which is pointing toward my old B6 plug in my picture).

Your install is neater, while mine's simply less work since I don't worry about the black plastic "harness holder" and just put my B3 harness on loose.

Karl

[blitzbuggy]

There are two different intake manifold types, the earlier ones look exactly like the 1.3, it's the later ones that look like that picture above. You want the/a b6 ecu (b61k). It will run on a b3 ecu, and you will feel the bigger engine, but with the b6 ecu it will really come alive. And if you're going to do all that other stuff like a 3 angle, 60 over, port matching, cam, cai etc, why in the world would you ask about the stock airbox!?
Or do you mean that "aluminum vaf thingy" lol

the air box will go, if the VAF sennsor can be moved,( that big alluminum box) i have read that was a problem with a festiva, like my mustang the maf sensor was the main issue for problems with a cold air intake, mind you i by passed it with my protege 5,

can i get rid of that alluminum box,? is there any one with an actual CAI ?

and i do believe a 16 valve head should fit, i may just need to see if the coolant jackets line up. and grab the ecm, maybe i wont have to, these obd1 CARS arnt that sophisticated,
perhaps just get a 16 valve engine to stop all this heart ache?

sorry for my ignorance