Hey guys in a about 3 months i want to start my integra project. I have b18b ls engine, my question is would be better if i was turbo my b18b and change the displacement to 2.0 liter or just get b20 engine and turbo it because i heard its faster.Any inight would be appreciated.
Denny

 

Let's think about this logically for a minute. You have 1.8L boosted vs. 2.0L boosted. Which one would you suspect would give you more power? The 2L engine would. b20's can be had for cheap.

 

I prefer the b18b over b20 anyday.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DuckEggs &raquo;</TD></TR><TR><TD CLASS="quote">I prefer the b18b over b20 anyday.</TD></TR></TABLE>
Why?

 

because there are sleeve issues with b20's...especially under boost

 

From my experiance with b20s a few of my buddies have had real bad luck with them. My ls runs mint. Love it.

 

So Ls handles boost better? It all depends on the build?

 

Which tranny is preferred for turbo ?

 

a shorter geared tranny will always be faster.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lVlemphizStylez &raquo;</TD></TR><TR><TD CLASS="quote">because there are sleeve issues with b20's...especially under boost</TD></TR></TABLE>

 

If he wants to bore the ls motor to 2L there would be sleeve issues there too. So I'm saying he could go b20 sleeved and maybe a block guard.

 

block guards are trash IMO

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mrdeadman &raquo;</TD></TR><TR><TD CLASS="quote">If he wants to bore the ls motor to 2L there would be sleeve issues there too. So I'm saying he could go b20 sleeved and maybe a block guard.</TD></TR></TABLE>

or sleeve an ls and be stronger than a b20 with a crappy block guard

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redDAinteg &raquo;</TD></TR><TR><TD CLASS="quote">a shorter geared tranny will always be faster.</TD></TR></TABLE>


LS tranny will keep him in the power band better.

 

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


LS tranny will keep him in the power band better.</TD></TR></TABLE>

nah really..it wont...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redDAinteg &raquo;</TD></TR><TR><TD CLASS="quote">a shorter geared tranny will always be faster.</TD></TR></TABLE>
so the b16 tranny is good for turbo setup or should i go for a gsr tranny.

 

Aight you guys thanks for the insight

 

depends on how much power you intend on making...too much power and you may be scrapping for traction with the b16 transmission...A decent street setup would be fine with it though

 

I can tell that A LOT of you dont even have turbo..... and you are talking based on what you hear and not what you know for fact.

i have a turbo b20. my friend has turbo ls.
i can tell you it is a much much bigger improvement then you would think.

go with the b20.

and as for trannys..... dont go smaller than a gsr tranny. stay with the ls tranny or get a gsr tranny but DONT get a b16 or type r tranny. the gear ratios are wayyyyyy too small for turbo and you arent gona be very fast at all cause youll be burning out hitting the redline through almost every gear. and thats with a small turbo setup.

 

Theoretically speaking, a B18 would be the best engine to boost. With the B18, there is a little more reassurance that you won't blow through the cylinder walls because of too little tolerance. It also has the benefit of having a bigger bore than the B16, so in my opinion the B18 is the best compromise between safely boosting a B series engine and making good power and torque. Thats why many people shy away from boosting an H22 or (to throw in another car company name) why most Nissan enthusiasts will not boost the 3.5 engines (they will buy a 3.0 and boost that instead) because the cylinder walls are too small and often times get blown out by over 7lbs of boost. I am not completely familiar with the B20 though, and dont know the thickness of the cylinder walls, so check on that first because there's still a good chance that a boosted B20. Many people say close ratios are good, but running boosted, Ive seen that an LS tranny is perfect. If you boost your car well, first gear should be practically useless in almost any 5 spd, and the LS has longer gears than a B16 or GSR tranny so there is a better chance that 1st and 2nd will hook up, plus there is more top end with a longer geared tranny. Ok good luck!

 

b18 and b16 have the same bore. the difference in displacement comes from the deck height and stroke differences.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LordAphotic &raquo;</TD></TR><TR><TD CLASS="quote">I can tell that A LOT of you dont even have turbo..... and you are talking based on what you hear and not what you know for fact.

i have a turbo b20. my friend has turbo ls.
i can tell you it is a much much bigger improvement then you would think.

go with the b20.

and as for trannys..... dont go smaller than a gsr tranny. stay with the ls tranny or get a gsr tranny but DONT get a b16 or type r tranny. the gear ratios are wayyyyyy too small for turbo and you arent gona be very fast at all cause youll be burning out hitting the redline through almost every gear. and thats with a small turbo setup.</TD></TR></TABLE>

same...I can tell you dont have any experiene with a turbo on a b16 transmission either...Cause thats whats on my car..with a garrett t3...by your logic there shouldnt be a boosted type r in existence that still has his stock transmission....and sir, youd be dead wrong to believe that

 

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

same...I can tell you dont have any experiene with a turbo on a b16 transmission either...Cause thats whats on my car..with a garrett t3...by your logic there shouldnt be a boosted type r in existence that still has his stock transmission....and sir, youd be dead wrong to believe that</TD></TR></TABLE>


its different when you go from a turbo b20 to a turbo type r. the difference in torque is massive. not in numbers but where its placed in the powerband.....
and being that the b20 and ls only go to 7k rpms, youll max out the tranny really fast.

i had a type r transmission before i was turboed. even with a lightly moded NA b20 is maxed out the tranny fast. the powerband for the b20 and ls are too low for a b16 and type r tranny. with a type r its totally different. and very possible to use the smaller geared transmission because of where the powerband is.

i just flat out say using a transmission like the b16 or type r transmission on a lower reving engine like the ls or b20 and ontop of that throwing on the turbo is a big mistake. unless you build up the block to go higher in rpms and work on shifting the power band your not gona be very fast. youll be quick but not as fast as you would be in a longer geared transmission like the gsr transmission. thats about the perfet size for a turbo ls or b20 engine.

you could throw on a type r or b16 tranny on the b20 or b18b but chances are that it would be faster with the gsr tranny. for sure in the long run but with the amount of horsepower you can make with a turbo and the gear ratios and torque multiplication its deffitnatly best to go with a gsr tranny. when it comes to the b20 and ls turbo engines that is.

i speak from experience not from other peoples word of mouth.

 

did you use the b16 transmission when you were turboed??? ( you only mention using it before turbo) if not...then the discussion should end here because it invalidates your claim of "I speak from experience"...and that take on "maxing out the tranny really fast"...what makes you believe for one second if your rpms are going up faster that your speed isnt going up faster as well??? (given you have traction)

 

Thanks man, how much difference would make if i was to add an lsd to it? and which would be best brand? Oem or aftermarket.