I am trying to figure out what intercooler size would work best for my B18B turbo project/kit/whatever.

I am going to be running a T3 turbo with .42 compressor a/r and .48 turbine a/r, no more than 6psi *max*. My goal is to have it spool very quickly, as I would like to use it effectively with autocrossing.

So any formula or recommendation on how to find the right size intercooler for my goals, with out to much pressure loss?

Thanks in advance.

 

This should be the perfect size for you...

https://honda-tech.com/zerothread?id=387085

 

I was thinking more along the lines of something this sized

 

Ok then.

 

FWIW im running a t25bb @7psi with a t3 comp wheel on my 1.6L nissan engine. my IC is 28.5"*8.5"*3.0" with 2.25 inlets and 2.0" IC piping. as far as spool up is concerned....it makes 7psi in every gear very quickly. for example, i can get 7lbs in 1st before 4000rpm with a leaking manifold

 

what about just like a Drag Turbo Sized intercooler I think would work great

 

if you have a civic that eclipse intercooler will work great..

in an integra it is a little harder to find a good place for it

 

get one like this



[Modified by Boosted97Lude, 10:15 AM 1/26/2003]

 

God damn man, who the hell makes that front end ?

 

http://www.jtautostyle.com

 

Its on an integra, so I am expecting it to be a little hard to find a mounting position. I can get the piping made custom, so as long as I can find space I should be all set.

I would like to be fully spooled at 6psi by 3,000rpm. Would the size of the intercooler effect this?

The reason have been planning on getting a smaller intercooler, is I was told the larger intercooler would create more piping which in turn would lengthen the spool up time.

 

Its not more piping that makes the turbo spool longer.

If you have a larger IC, the area inside of your piping and IC takes longer to pressurize since the volume is bigger.

You want to keep the air volume down between the turbo and the IM to keep your spool time low.

 

Has anyone ever done a back to back comparison of a large IC/long pipe vs. a smaller IC/short pipe to compare the throttle response/lag? I was very concerned about this when designing the IC setup for my autocross car, because any lag or throttle response issues are going to cost time. Because of my concern, I went with an under hood mounted ice water to air IC, which basicly fit in line with the charge pipes I was running with no IC. It works great, no doubt. I didn't feel any difference in throttle response or lag, and picked up some power as well. I also only got a pressure drop of less than 1/2 psi.
What I don't know is how the car would feel with a larger FMIC and more piping. Would it really make a noticable difference? The ice water system works great, but it is very high maintenance, with all the ice I have to shovel into it between runs.

-Chris

 

So I would want a smaller intercooler, like the one I posted above.. instead of a larger FMIC?

 

"FWIW im running a t25bb @7psi with a t3 comp wheel on my 1.6L nissan engine. my IC is 28.5"*8.5"*3.0" with 2.25 inlets and 2.0" IC piping. as far as spool up is concerned....it makes 7psi in every gear very quickly. for example, i can get 7lbs in 1st before 4000rpm with a leaking manifold"

T-25 Ball bearing 1.6L 7 psi before 4000 rpm? wow amazing. I have a T3/t04E 1.6L and i hit 12 psi at 3,200 rpms.

sorry, that just seemed like a lot of lag to me for a Bb T-25

I'll be switching from a small sized intercooler, to a VERY large intercooler here, soon, and i can post some results of the spool up times here. it's hard to know exactly when i get full spool, becase as soon as it hits... the tires just spin, but i can datalog it :-D

Oh, and also. That SMIC intercooler will work very well.


[Modified by lazerus, 12:03 PM 1/26/2003]