Hey everyone,

I was wanting to know what builds people have that are making in between 400-500whp.
Also would a boosted b18c with stock sleeves handle 400-500whp with forged internals?

 

I would imagine there are 1000's of these builds that have been done, and hundreds that can be found on forums with some searching...

Nonetheless, yes you can make that power on stock sleeves, with a good tune and I'd suggest e85. You just need a good flowing head and properly sized turbo.

Mine is

b18c1 block
Wiseco and eagle internals
arp bolts and studs
b16 head, heavily ported
gsr cams
gt3255 turbo
log mani
e85
400whp at 17psi with very conservative tune.

 

Hey there.

One of the aspects of many forums is new members joining and asking questions that have been answered and thoroughly discussed numerous times before. As I'm sure you can understand, many members would prefer the newcomers to search the information so they can find the answer for themselves, especially after it has been answered many times. A good place to start is the FAQs at the top of the forced-induction thread page.

After familiarizing yourself with the FAQs, you should be well on your way to building a 4-500whp car. The main things you will need is a built motor (stock head can suffice, rods and pistons are required and sleeves optional but recommended for much over 400wheel), an upgraded fuel pump and injectors (no fuel rail upgrade necessary), chipped ECU or standalone ems, turbo kit, and a good tune. All of that was rather vague, but I'm sure filling in the particulars will be easy enough.

Also, be realistic about the power goals. Are you going to be running e85, meth injection, or race fuel? If the answer is no, then you are going to be looking at a larger sized turbo to meet your goals, which will spool slower and offer worse throttle response. Do some studying on the aforementioned fuel setups if you want the smallest, quickest spooling turbo for the job. Also, try to narrow down the power range perhaps. 470 vs 590 crank hp is quite a difference when it comes to sizing the turbo, and you should try to discern whether or not you value the drivability or power more for whatever use you are intending it for. For example, drag racers don't care about turbo spool since they are flat out on the accelerator right off the line and aren't falling out of the power band at any time. Circuit racers on the other hand have to worry about the spool on short straights, as well as the turbo response for pulling them out of corners.

 

Hey,

Thanks for your reply - it helps heaps!
Yeah sorry about that, I've done quite a bit of searching and was only finding old posts and was looking for something maybe a bit more modern.
Saying that, I'm not that familiar with using forums

Thanks again!

 

Hey Geis,

Thanks for your reply - super awesome and detailed, cheers!
I'll be running a t3/t4 on 98 pump gas to start with, my b18c black top is all forged internals, just stock sleeves.
I have 550cc injectors, a walbro 550hp fuel pump, a hondata, and a 3" straight pipe exhaust running through as it's a legal requirement in New Zealand.

I'd like it for multi purpose (Drag & Track) but where I live we only have a drag strip and will be mostly using that once the car is up to scratch.

Let me know what you think, love hearing opinions!

Thanks again!!

Edit:

My apologies, I have done some searching but was only finding old posts and was wanting to see something more recent - also doesn't help that I'm not that familiar with using forums :D

 

Running the b18c cams I hope? You will probably want to look into meth injection in order to get over 400whp from that fuel considering that it's RON. It seems I've mistook your level of knowledge, my apologies. 550cc injectors will also be a limiting factor, and I'm not sure what you mean by '550hp walbro' - dunno what model you're referring to.

Anyways, since you already have a solid turbo for the build, that's about all the advice I could give you. That and perhaps suggesting you use a quality log or mini-ramhorn turbo manifold, along with a solid intercooler.

 

be more specific there are literally hundreds of t3/t4 framed turbos, and you wont be making 500HP on pump gas. either be more realistic with your goals or get a sleeved block and plan to use better fuel.

400 is do-able, even then you run the risk of cracking a sleeve
the injectors you have will support 400HP at the absolute maximum, you will need something larger

http://www.evans-tuning.com/dynos
https://honda-tech.com/forums/forced...238858/page12/
https://honda-tech.com/forums/forced...279769/page22/

 

At minimum for your goals I would get 750cc injectors for pump gas or 1000cc if using e85 will ever be an option.

I know what you mean about wanting to find more current info, and it is difficult for B series builds. Most people have moved on to H or K series in recent years.

The main things that have changed in the last decade for building B series I have noticed are

1) tuning solutions, the only good way to tune is to spend some money and get a Hondata S300 or similar system, there aren't any good cheap options around anymore.

2) nobody uses low compression pistons for turbo anymore. Stick with 10:1 or 10.5:1 pistons if you can.

Otherwise there is a better range and technology of turbos and supplemental parts available. But nothing else has changed really.

Good luck