eddie1681

Hi

I think this question as been ask before, but the question was not really answered. so here it goes again.

Which one is better JDM B18B or JDM B16A sir2, I have the chance to get a JDM B16A2 for a really good price.

I am putting this in my 92 HB

Thanks

eddie1681

anyone?

Type-ARR

try a search.....

boosted hybrid

Well here goes:

1. B16a has the perfect rod/piston ratio of 1.74:1, which allows the piston to dwell at TDC longer, therefore creating a more enduring engine for boost or abuse, or both.

2. The blocks are a dime a dozen and respond to turboing well.

3. If running higher boost levels like 20+psi the b16a engine is far superior than the b18b mainly due to the rod/piston ratio.

I opted to go with the b16a block for my hatch last year. I had the choice to go with a b18c, but i knew that the engine would eventually get fully built and i would be running high boost levels. Now the block is being sleeved and bore out to 84mm, which makes my b16a a 1.8 liter and i still retain the perfect rod/piston ratio.

93LSivic

Interesting. Good info boosted Although I read this before, I just like seeing it pop up from time to time so others can ponder on it!

eddie1681

Thanks guys,

I did try the search but nothing really interesting. I will get the B16a, I kindda like to rev the motors high.

Thanks again

Etylorcen

Get a jdm b20b or a usdm b20z and turbo it like your name. Torque monster hehe. Its really preference too...if you plan to go all out on your motor you're going to be dropping the CR on the b16 anyhow but if you just plan to get a motor and keep it stock for a while w/ the turbo the b18b turbos a lot nicer stock for stock.

immortal

b18c sleeved to 84.5mm

cant beat 2.0 liter 8000 rpm

DIRep972

iTrader: (1)

B16a and bore it to 2.0..

MugenSi00

that's not possible is it...the walls would be too thin. You can do it with a b18c

88CRXHybrid

Actually you get 1727.25cc's with an 84.5mm bore and with an 84 mm bore 1705.998cc's. The engine I am opting for is a compromise between both B16A and B18c/B18B. It is a GEM sleeved B18B block bored to 84.5mm with a B17A crank (81.4mm stroke) to get you 1825.95cc's and a 1.68r/s. Now you might only say that is only 119.95cc's(.12L) difference but you must keep everything relative. 119.95cc's is a 7% increase in displacement. This means if you are putting out 400hp then the increase in displacement would theoretically give you ~28.12 hp if not more without upping the boost, fuel pressure, intake air temp, likelyhood of detenation, etc in order to make more power.

eddie1681

Well I am going to keep the B16A stock for now until I can get more $$, Do you guys think 7-8 psi and 10 psi max is safe on the B16a?

I will also be using the 450cc DSM injectors too, what FPR should I use with that?

Thanks

RAWB

I'm runnin 8 psi with an ocassional 10 on my stock B16, right now. Just using the DRAG kit's FMU(FPR + Inline) and a VAFC to fine tune.