Whats wrong with the B18A swap?

EF_LSVTEC from your experience how much do you think it will cost for me to build a ls vtec?

Originally posted by EF_LSVtec
Ok...lets see you smoke my B18b (JDM 4-1 header, lightened flywheel, AEM CAI, HKS exhaust) with a B16 tranny in an EF, with your D16a6 or even w/ your B16a...

Have you been to the track with your car to get slips yet?! Like I said, I ran a 15.0 with just an exhaust. Next time I go back I'm going to run a 14.8 with just exhaust, I know its doable.

I'm not saying B16A is the king of all motors, but for the price of it compared to the B18 a 1st gen B16A is the best B series motor you can drop in to a 4th gen.

EF_LSVTEC from your experience how much do you think it will cost for me to build a ls vtec? What do you need 2 ls vtecs for?! Sell me one... lol jk I know you probably wouldn't.

This is how much I spent so far, not to include fees to my mechanic, because as you all know, he's not done yet...hopefully...end of this month because the only part we're waiting for are the rod and main bearings that are back ordered from Japan...please give allowance of a couple of bucks, dont really remember how much some of em exactly...

91 LS block (bare) $200
US Type R pistons .25 oversized w/ rings $290 shipped
GSR head $400
Head porting and polishing $350
CTR cams (intake and exhaust) $750
Skunk2 camgears $150
US Type R (valve springs, retainers, motion assembly, valve guides) $400
Skunk2 intake manifold $320 shipped
BBK 70mm Throttlebody $350 shipped
Vtec oil fittings(braided) $100
Exedy clutch $350 shipped
Clutchmasters lightened flywheel $290 shipped
1st Gen B16 Vtec distributor $250
Stock PR3 ECU $250
JDM 4-1 header $375 shipped
Rod and main bearings $100 shipped
AEM CAI $200
Apexi VAFC (brand new) $275 shipped

Parts no price yet:
Vtec oil pump, Vtec waterpump, timing belt, Head Gasket, LSD tranny
Mechanics fee, $1500 (includes motor install and assembly)

Note that I have friends that work at a local Acura dealership, so OEM Type R parts were purchased w/ 35% discount

I will probably sell or trade the B16 so I can set up an LS turbo or B20 turbo...To tell you the truth, I have 3 LS motors including the LSVtec in the works :D

Hey 91HBSi, didnt mean to yank your horn...it's all good, we're all in one team arent we? B18a/b or B16, we all did our swaps because we want something better. Better than our old motor or other motors, who cares...as long as we're able to give and share our experiences to others and learn from other people's mistakes in return and of course, have fun doing it, that's all that matters...Just my 02.
You're still welcome to test drive my ride anytime and see for yourself...LOL just kidding;)

i htought i mentioned this earlier. i got 2 friends, one has a b16 crx and the other had a b18a crx ( i am gonna buy his motor since he crashed his crx). they both got i/h/e and they raced and the b16 crx won by about 2 car lenght. both of them are good drivers too. the b16 would win.

everyone has this idea that teh b18a is a good motor to turbo but really it isnt, it sucks as a turbo motor. oh you get a few more torque, so what. with the b18a you cant rev high, the rod ratio is a killer, lack of hp. with the b16a you get high revving, rod ratio is perfect, lots of hp. the only thing is compression and if you plan on running more than 10psi hten you would need to drop teh b18a compression anyways so it all equals out. this board is insane thinking the b18a is a better turbo motor. if the b18a is such a good motor then how come none of the big racers use it, like lisa kubo.

Originally posted by 91HBSi



I would mate the b16a with the Ls tranny because the B18a/b has better ratios for drag.

What??? LS tranny is NO GOOD for an ALL MOTOR. If its turbo yes but not for all motor man. Now for the last guy who said something about the compression...high compression is good for turbo. Like i said before u don't have to lower ur compression. U only do that to go high boost. High compression turbo motors can run high 11's and 12's with LOW BOOST. You're only lowering the compression cause you want high boost but its not needed.

Why wouldn't the type r pistons fit on a b20? I've heard some ppl did that set up before adding type r pistons in there b20.


The reason they wont fit is the b20b / z has a larger bore then all other b-series motors 84mm vs 81mm. Also the b18 stroker could be cheap if you know what your doing because the b20a5 out of the old preludes has the crank you need to make a stroker how ever start with a b20z block b20a5 crank and rods b20z pistons and have almost a 2.2 b-series motor. (not a high reving motor but a beast none the less)

AND high compression turbo is a very very good thing because the high compression makes the turbo spool up faster so better accel for street and track the only reason high boost is good is for high horse power all out drag cars it is rare and too damn expensive to 30psi on the street

i about go ls vtec in april,its gonna run about 500,im buying a 93 ls block/w type pistons from my boy for 300,to take the the head to a machine shop to get driled will cost about80-100,then im going to pay my boy a 100 for the help is going give me :smokin:

But i wish some of u boys come nyc to get you ls swapp spanked buy some gsr hatches,b20 hatches,and ls/vtecs hatches with turbo, b16s are HIGHLY OVER RATED,i have 1. We got 88 honda accord with a 99 gsr in it for u EF_LSVTEC :naughty:

oH yea my mods, b16,intake,exhaust,b16a2 cam gears,93 ls cable tranny,93 ls dizzy.Soon to be ls vtec

WTF!? This post is over two years old!

Dead horse.

i about go ls vtec in april,its gonna run about 500,im buying a 93 ls block/w type pistons from my boy for 300,to take the the head to a machine shop to get driled will cost about80-100,then im going to pay my boy a 100 for the help is going give me :smokin:

But i wish some of u boys come nyc to get you ls swapp spanked buy some gsr hatches,b20 hatches,and ls/vtecs hatches with turbo, b16s are HIGHLY OVER RATED,i have 1. We got 88 honda accord with a 99 gsr in it for u EF_LSVTEC :naughty:

oH yea my mods, b16,intake,exhaust,b16a2 cam gears,93 ls cable tranny,93 ls dizzy.Soon to be ls vtec

haha you come to cali i have a little fun against one your crew guys also this post is over 2 years ago...things changed sense then.....

What??? LS tranny is NO GOOD for an ALL MOTOR. If its turbo yes but not for all motor man. Now for the last guy who said something about the compression...high compression is good for turbo. Like i said before u don't have to lower ur compression. U only do that to go high boost. High compression turbo motors can run high 11's and 12's with LOW BOOST. You're only lowering the compression cause you want high boost but its not needed.

I don't really understand what you're trying to say as far as the trannies go. Why would you recommend a different tranny for NA and FI appllications.

For the compression issue, it makes more sense to run lower compression to lower the risk of pre-detionation. A lot of people who run turbo's with higher compression face that. With forced induction you are cramming a lot of air into the cylinder already, and thus more fuel is most likely added; that in conjunction with a compression ratio of 11.5-1 = pre-detonation. It's especially bad with the mini-me swaps. Even running at a lowley 5-6lbs, they can't seem to get rid of it. I'm sure you already know that though, I'm sorry if it looks like I saying you're ignorant. Maybe you know something that I don't, because there are a lot of things that I don't know :) Please elaborate.

EDIT: Sorry, I didn't really explain too much there. You are saying that if you lower compression, you are doing it to raise boost, which in effect is doing the same thing as higher compression with lower boost. That is true if you are saying that the rate of flow that the turbo is producing is the same as the rate of flow that the engine alone is accomplishing.

An increase in CR = improved thermal efficiency.
An increase in boost = improved (effective) volumetric efficiency.
Both increase power output, but the former is limited by octane requirements. Once that limit is reached, the only way to make more power is a reduction in CR and an increase in boost. The peak cylinder pressures will remain the same (if not lower) but the mass air flow through the engine will improve, hence more hp.

This is just my understanding though.

After posting, I decided to go do some research and found http://forums.clubrsx.com/showthread/t-46445.html. There are some pretty reputable honda/acura guys in the discussion. Good stuff, REALLY good stuff.

You can fun high cr turbo with good tuning. It will not damaget he motor.