B20 engine intergrated with a LS Integra - Honda Forum / Acura Forum

bloodyangel · 03-31-2005, 10:27 AM

If i wanted to put a b20 engine into my LS integra, how much would this be? Also if I put the b20 block into my car do i have to replace my ecu, exhaust, headers, and intake?

djinteg102 · 03-31-2005, 04:02 PM

You can put the b20 in you car no problem, but i suggest using the ls head, or just the ls vavetrain b/c it better then the b20's

DXE · 04-09-2005, 02:15 AM

im all over this swap too
talked to a few places, and this guy told me he could give me B20 block, b16 tranny, and ECU for 1900.. almost 2 g's
then another guys told me he could get me the b20 with a b18 5 speed tranny... im thinking LS tranny
that guy didnt tell me an exact price..
im planing on keeping mine non-vtec.. cause i hear its more reliable like that...
less chance of the block cracking
how much am i looking at..
i have about 3 grand saved up now

midnightsdawn89 · 04-09-2005, 02:25 AM

i just got finished putting my b20 and jdm j1 tranny in my car today.( 93 integra). it feels pretty good
i paid 800 for the motor and 500 for the tranny , and that is all you need,,, every thing bolts right up.. but you have to use the map off of you interga and just plug the vaccum line directly into the intake manifold..and there are some other little stuff but nothing an average person with good knowledge cant do...

midnightsdawn89 · 04-09-2005, 02:28 AM

the only reason an vtec head on an ls or b20 motor is not reliable..is that these motors have a longer stroke and are not made to be pushed anything above 7500 rpms but these ppl put a vtec head on them and there hitting 8500... these motors are not made for this rpm range,,,( unless built right.) //;/

djinteg102 · 04-13-2005, 01:28 PM

i agree with you i built my ls/vtec to redline around 7600rpm, and that as highn as im gonna take mine

midnightsdawn89 · 04-14-2005, 02:34 AM

that is what i am about to do ...

nojdmsadness · 05-27-2005, 12:48 PM

i have been contemplating putting a b20 block under my ls head. Does anyone or has anyone ever seen this done before and what are the rersults like. any information would be greatly appreciated

turbonewf · 06-05-2005, 06:41 PM

ahhh.. doesn't the cranks interchange between the two? just the bore is larger on the B20. The rpm range theoreticly should not change. now I really want to get picky. the flow through the stock P75 head is the same so given that the displacement is 10% more, the heads rpm limit should be 10% lower for the same airflow.

that would mean if the B18 make peak power at 6000 rpm then the B20 should peak at 5400
does this make any sense?

sorrow · 06-05-2005, 07:37 PM

first off the heads are the same. With one exception, if its a p8r head. Otherwise unless you have this head the LS and B20's are the same. Next rod stroke.. guess what look at gsr or type r... how much of a difference is there again? Not enough to start crying. They use a girdle for extra stability. The powerbands are tuned that way everything from cams to intake manifold port sizes and shapes are ment to induce the outputs at specific rpm's. There is way to much going on to just say these engines cant rev either. Granted that the B20 really does have a slightly lower max limit do to the sleeves.
For reference:
http://dwolsten.tripod.com/articles/jan96a.html
http://www.nonvtec.com

krzintegraboi · 06-06-2005, 08:10 PM

i really dont know yet ill just say to stick with stock rev limit ..if you do im guessing its the same if it wasnt vtec... besides the valve clearance im keep hearing about.. i was told not to advance the cams or run skunk 2's ...someone told me the most is ctr's .. but i really dont know because i dont have the motor yet .. if you want to have 180 whp try to get that at 6500 rpms its going to be extremly hard .. if you just trying to get a ok street car... light wheels and carbon fiber with a 170 whp is pretty quick and just guess 170 at 6500 rpm and a 170 gsr or type R who will win same 170 whp