b18b turbo project

[jason_guy_yeah]

I have a b18b with aerias pistons 9:1 CP and Eagle conneting rods. How much HP can the stock sleeves/cylinder walls handle (400 hp?) and what type of t3/t4 turbo(to4e, to4b, ect)? Oh, does the crank need to be balanced; and why?

thanks

 

[jason_guy_yeah]

bump, oh come on. Some one's gotta know. : )

 

[Shiznit]

300whp give or take a couple dozen hp according to tune

ive seen t04e's make 300hp on a mere 8-9psi. dont know much about the t04b

and no need to balance the crank

 

[Handlebars]

you can make 300+ whp on a stock ls motor. the stock sleeves, with forged rods and pistons are good for ~450 whp or so.

 

[jason_guy_yeah]

cool, and would a .60 be effecient? Or is 57 trim alright?

 

[Shiznit]

they are both fine turbos. .60 will give you more power but will lag a little more than a .57

 

[jason_guy_yeah]

alright so a .57 trim and the stock sleeves will be good to ~450whp?

 

[Handlebars]

cool, and would a .60 be effecient? Or is 57 trim alright?

you arent going to see much tangabe difference between a 60 trim and a 57, if you really plan to push 450 whp, go .60 trim, just in case you need a bit of extra top end flow, as you'll be maxing that turbo out. you'd probably be better served with a gt30, or another 500+ whp capable turbo, to make sure your iat's stay low enough. also, get a VERY good tuner, as your dealing with some unbelieveable combustion chamber pressures, and even slight detonation can destroy stock seeves at that boost level.

 

[jason_guy_yeah]

hmmm...how about I push it down to 400whp, to give more room for error. well, considering it's going to be my DD. Ok, I think the question I'm proably trying to figure out is, what is safe.

 

[Shiznit]

making that much power you had better have some damn good traction or you will just burn your tires through all your gears. 300whp is a much more reasonable goal for a DD

 

[stealthy]

ive got a gsr, with a built bottom end minus sleeves. im using a gt35r and stopping around 400whp or so and calling it a day. but at this point, a GREAT tune is a must. im going to jeff evans in PA for a neptune tune. the thing you will have to watch is making sure you have perfect piston to cylinder wall clearance and zero detonation. you might wanna look into a water/alcohol/methanol injection to help reduce detonation and as extra peace of mind. 400+whp has been done many many times on gsr's, so IF stock LS sleeves are the same, then you should be good with a good tune

 

[swappedcx]

i will be doing 600whp forged internals on STOCK sleeves with a 81.50mm bore on a sc61 this spring ls-vtec. No less than 600whp race gas, and 400whp daily driven. So anything is possible.

 

[jason_guy_yeah]

awsome, thanks guys

 

[jason_guy_yeah]

ive got a gsr, with a built bottom end minus sleeves. im using a gt35r and stopping around 400whp or so and calling it a day. but at this point, a GREAT tune is a must. im going to jeff evans in PA for a neptune tune. the thing you will have to watch is making sure you have perfect piston to cylinder wall clearance and zero detonation. you might wanna look into a water/alcohol/methanol injection to help reduce detonation and as extra peace of mind. 400+whp has been done many many times on gsr's, so IF stock LS sleeves are the same, then you should be good with a good tune

I did research on the water/alcohol injection. Is there supose to be a certain amount of ccinjected at certain RPM's? I could only find one article that was very specific.

 

[hybrdthry911]

remember were talking about an ls here. its going to take a bit more boost to push it to 400whp. u might want to consider a 60-1.

are u going to run a stock head and cams?

 

[swappedcx]

If he gets a 57 trim .63 ar t3/to4e the car should get to 400whp, but the turbo will be damn near maxed out and at a pretty high PSI. The difference between the 60 and 57trim is very marginal. 300whp daily driver is not bad, but it does get old after a little while. If I was the OP dont shortchange yourself with your power goals. If you want 450whp then go for 450whp, because sooner or later you will aim for it anyway again.

If the OP plans to be in the 400whp range I would deffinatly not get a t3/to4e. I would look into a variation of a sc61 in a e housing. The smaller ar ones will be more in the efficiency range of the turbo, and make meeting the goals much easier at lower boost levels.

 

[stealthy]

i will be doing 600whp forged internals on STOCK sleeves with a 81.50mm bore on a sc61 this spring ls-vtec. No less than 600whp race gas, and 400whp daily driven. So anything is possible.

thats pushing it. not saying it hasnt been done.

I did research on the water/alcohol injection. Is there supose to be a certain amount of ccinjected at certain RPM's? I could only find one article that was very specific.

i really dont know to be honest, its something i havent looked into a whole lot YET

 

[swappedcx]

thats pushing it. not saying it hasnt been done.

Shouldnt be a issue really, Jeff Evans is almost literally in my backyard and tuning the car. So with a well built engine, and one of the best tuners in the country anything is possible.

 

[jason_guy_yeah]

remember were talking about an ls here. its going to take a bit more boost to push it to 400whp. u might want to consider a 60-1.

are u going to run a stock head and cams?

yes, I will be running stock cams and head but, I will have steel valves, crower springs and tatnium retainers though.

I did more research on water/alcohol injection and it can lower iat 90 F. And with the ability to lean out the a/f consideribly more and/or be able to increase psi without detonation. Also, alot of kits I've seen so far adjust how much cc are inject per lbs of boost.

 

[hybrdthry911]

why risk it though. at those level it takes very little and your motor is worthless. at that point no matter how good of a tune u have its enough stress on its own to crack those sleeves. i would never want that in the back of my mind when im driving at 600+whp.

sure its possible but how long will it last...