im in a dilemma. which is better for boost. b18a is cheaper, but hard to find a low mileage one. b18b more expensive, but newer and more powerful. help me with a decision. remember this motor will be fully built (sleeves, pistons, rods, etc..)

 

I would get a b18a, unless you want obd1(b18b) might be nice.

 

i dont know but i think my friend is selling his Ls B18a1 Longblock it has 106k miles on it. and hes from Northern Cali.

 

they're basicly the same block only difference is in the head.

 

how do you know if its obd1 or obd2???

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by umrex &raquo;</TD></TR><TR><TD CLASS="quote">im in a dilemma. which is better for boost. b18a is cheaper, but hard to find a low mileage one. b18b more expensive, but newer and more powerful. help me with a decision. remember this motor will be fully built (sleeves, pistons, rods, etc..)</TD></TR></TABLE>

as for this, since the B18a is cheaper and your gonna rebuild everything anyway, just get the cheaper engine i guess

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turtlecx92 &raquo;</TD></TR><TR><TD CLASS="quote">how do you know if its obd1 or obd2???</TD></TR></TABLE>

b18a is from 90-91? integras which would make it obd1. 94-95?ls Integras would ablso be obd1. 96+ I believe are obd2. Someone correct me if I'm wrong. I always forget the years.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by umrex &raquo;</TD></TR><TR><TD CLASS="quote">im in a dilemma. which is better for boost. b18a is cheaper, but hard to find a low mileage one. b18b more expensive, but newer and more powerful. help me with a decision. remember this motor will be fully built (sleeves, pistons, rods, etc..)</TD></TR></TABLE>

If you are going to be building the motor up anyways, I would say go with the B18A. You can get one for a lot cheaper, and mileage wont really matter too much because as you said it will be built. And what you said about the B18B having more power also shouldn't matter too much, because you're gonna be boosting the motor anyways. Another added advantage of the B18A is if you use the stock cable tranny, it will drop in a lot easier, and a lot cheaper (no cable-to-hydro conversion neded).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by michaelOlson &raquo;</TD></TR><TR><TD CLASS="quote">b18a is from 90-91? integras which would make it obd1. 94-95?ls Integras would ablso be obd1. 96+ I believe are obd2. Someone correct me if I'm wrong. I always forget the years.</TD></TR></TABLE>

I thought that 91 and below was OBD 0 aka. non-OBD, 92-95 was OBD 1, and 96+ was OBD 2+? I'm almost sure that's the years for the different OBDs.

EDIT: here is a site that lists the diff OBD's, so It looks like 91 below are non-OBD, but 92-93 B18A's are OBD 1.

http://www.frogenginecontrols.com/OBDGen.html

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BlueShadow &raquo;</TD></TR><TR><TD CLASS="quote">

I thought that 91 and below was OBD 0 aka. non-OBD, 92-95 was OBD 1, and 96+ was OBD 2+? I'm almost sure that's the years for the different OBDs.

EDIT: here is a site that lists the diff OBD's, so It looks like 91 below are non-OBD, but 92-93 B18A's are OBD 1.

http://www.frogenginecontrols.com/OBDGen.html</TD></TR></TABLE>

thats correct....

 

you can usually find cheap b18a1's from a 92 or 93 ls, gs, rs and they are obd1

 

I have a b18b freshly rebuilt with OEM parts in ncal you can buy for cheap. there is low compression in cly 3, im thinkin one of the rings is messed up. good for rebuild.

 

92-93 b18a's are obd1, and also they are rated at 140hp unlike the 90-91's that were rated at 130hp