Originally Posted by
JDM-AlLSt*Rs
I want to know what you guys think is a better motor the b20 or the b18b im lookin to get one of these swapped into my car asap. its i short fix until a save up enough money to do my k20 swap. Lmk which you think is best and y. Thanks
it Depends on what your trying to do.
Stock to stock the b20 will out perform the b18 all day long.
Also, the motors are IDENTICAL minus the fact that the b20 is 84mm vs the ls being 81mm. The head castings are the same, rods are the same, cranks are the same, oil pumps, EVERYTHING. The I/M are different but that is easily fixed by putting a LS on on the b20.
some people say b20 sleeves are weak, blah blah blah. Well i have put 125shot of nitrous to a b20 , daily driven motor and have NEVER had problems. Ive owned 3 b20's and never had a problem.
I have ownd both and IMO b20 > LS anyday
Now take into fact i have never boosted either one, but from what i hear when boosted LS > b20 boosted.
Also the b20z > b20b, as the Z has more compression. BUt like stated above password JDM is selling the b20b's uber cheap.