b18a vs b18b

Drowzysleeper · Post by **Drowzysleeper** » Fri Mar 02, 2007 1:47 pm

im going to have both of theses engines but neither one is complete. the b18b doesnt run and the b18a does. so i figure i would combine the 2 and make one only problem i have is i dont have an obd1 ecu and im putting it in a eg any help on what i could do?

Post by **stolle** » Fri Mar 02, 2007 4:29 pm

i think they are both essentially the same engine just two different obd's, in which case all you would have to do is swap out sensors or change your plugs on the engine harness...

Drowzysleeper · Post by **Drowzysleeper** » Sat Mar 03, 2007 6:10 am

cool thanks any other options

90CivicEx · Post by **90CivicEx** » Sat Mar 03, 2007 8:29 am

They are both pretty well the same, and the same sensors between the obd's. Should be a in and out sorta thing, as for the ecu I havent a clue what one to go with reason being I don't know the code but I wanna say its a pr4 ecu and rickles has one for sale.

Spork · Post by **Spork** » Sat Mar 03, 2007 8:44 am

pr4 is the obd0 ecu.

90CivicEx · Post by **90CivicEx** » Sat Mar 03, 2007 8:51 am

Spork;26866 wrote:pr4 is the obd0 ecu.

I just looked it up and was gonna repost on here lol

Drowzysleeper · Post by **Drowzysleeper** » Sat Mar 03, 2007 5:25 pm

yeah im really wanting to stay with obd1 for tuning purposes. apparently there isnt a lot of engine management for obd0

5thgen · Post by **5thgen** » Sat Mar 03, 2007 7:44 pm

The older b18a1 heads (90-91) may have smaller intake ports. 92-93 b18a1 should be really close to a b18b1.

Drowzysleeper · Post by **Drowzysleeper** » Tue Mar 06, 2007 1:10 am

what exactly on the head determines if it is obd0 or obd1? is it just the dizzy intake mani, and maybe fuel rail, there are no actual sensors on the head alone is there? im thinking i could just swap the obd0 stuff with the obd1 stuff and it should be fine. also is there any different sensors in the block? oh shit one more question, do i need to change anything to put a hydro tranny on my b18a, since it was cable?