so i have an opportunity to buy a jdm L15, and IM BUYIN IT!
i plan on building this engine to handle 15psi as a daily driver.

here are the plans for the engine so far.....

-port and polish heads
-heat treat head, block and rods
-forged "soapdish" pistons
-bore & hone
-lighten and balance crank
-larger throttle body

thats all i can think of right now, suggestions would be appreciated

 

Best advise i can give you is pick a turbo and manifold first and work around that. I will contribute more as questions arise.

 

what type of turbo would you suggest that would peak at 15psi and spools quickly?

 

uh...16g heard spools super quickly.
i dont know if it can push 15. but i know 12psi for sure.


my buddy threw down full power on his f22 at 2k rpm. to me thats spoolin pretty quick. he put down 385whp. not bad. on a dsm set up.


ive been contemplating that set up for the fit. and just get a custom horn manifold or something.

 

The complete opposite of what everyone else will tell you.

I would go with a small Td04 or IHI, maybe a Td05. Best bet would be a little Td04. They spool fast, are just about bullet proof, relatively low egt's, and they are EVERYWHERE!
Its the mitsu turbo, and you will probably have to have a custom manifold made to run it because most people will go for a GT35r or something ridiculous because they think it is "cool" to have a Turbo the size of a ferris wheel, but it takes FOREVER to spool on a small engine.

I know of a couple of companies that will rebuild a Td04 with a different compressor for a few hundred bucks.

need anything else let me know.

 

16g will spool fairly quick, but you have to remember the small amount of displacement in these motors means small amount of exhaust. 16g is a good turbo though, can't argue that.

...and yes it will push 15psi.

 

I swear every time I get an idea of what I want to do to my car I turn around and you are doing it!

 

He's not the first one to look into a turbo. lol


-or were you talking about the thread?-

 

I was talking about the swap.

 

yeah i dont know much about turbos. i was just saying what i see and stuff.


i know someone who put a t110 on his prelude(yah im a prelude junkie)

which was rediculous.
then he switched to a g45?


anyways.... i want to boost, but i need to build a block. lucky you for those great hook ups you get kelsodeez

 

Ah. If it's any consolation I know of a small hush-hush project with the usdm Honda fit that will be happening in the next few months that WILL make a lot of people happy.

 

 

hahaha, great minds think alike my friend. im pretty stoked on getting the motor. i cant wait to see all the similarities and differences between the us spec and the jdm spec. i am new to the world of turbos. i havent had much experience with them so everything is a learning process.i understand all the theory behind the science but i dont have the experience with them. im going to run the t1r kit kind of as a beginners kit and work from there. thanks for the suggestions. i am going to research the td04 and the 16g now

 

Make sure you have a PCM too.. G'Luck

 

what is that a k24/k20 turbo i see in a BLAZING ORANGE METTALIC fit?

ahhhh pure sex.


man i just got 3k from my income taxes. this has opened a whole new world for me. let me tell you how many options it has opened. hahaha

and since i sold my carbon products that gave me a little extra to tow around with.

 

Can't say exactly, but I will say the words "FULL - KIT" are involved.

 

i don't know much about turbos really... but what about whatever turbo the OEM lancer evo is running. they run at like 22 lbs + of boost stock right? you could probably pick up a used one pretty cheap.

 

... that would be a Td05

 

[quote=cavie187;283369]
I would go with a small Td04 or IHI, maybe a Td05. Best bet would be a little Td04. They spool fast, are just about bullet proof, relatively low egt's, and they are EVERYWHERE!
quote]

lol that cracked me up. egt's has alot to do with tuning not the turbo. but the reccomendation is good. td04 is a frame size of turbo and comes in many flavors. some from as small as the 9b(3000gt) as big as the 19t(volvo v70r) I myself plan on running a divided td04l-15g hybrid. having the divided housing with a "twin scroll" manifold should spool pretty fast as well as having the 15g compressor wheel to support higher flow levels if needed. one common mistake for most people when boosting is the magic boost levels they want to run. example 15psi from say a td04 9b may only be say 200cfm as apposed to a 16g which at 15psi could be 350cfm(making up numbers for figure of speech) ultimately you need to look at it as cfm and hp. it might only take 6psi to make 175hp with the 16g and take 20psi with the 9b to make the same hp goal. so my reccomendation is to sit down and decide what the intentions of you car are, as well as a realistic power goal. if your looking for under 200whp(which is alot for a l15a) then I feel the td04 with a 13t or larger wheel is a good choice. or even a t25 framed turbo would be a good idea. going to the td05 or t3 framed turbos is going to be a little laggy IMO. another thing to consider once you pick a turbo is exhaust housing a/r(or cm2 for the mitsu boys) a smaller housing will spool faster but sacrifice power up top. so keeping in the .54-.63a/r (t25) is safe and 5cm2-7cm2(tdo4) would also be ideal. but going with a properly paired divided setup is like cheating on a 4 cyl. get the best of both worlds. gotta love exhaust scavenging.

 

So, assuming there is enough fuel and the exhaust is not restrictive, what about an approximate 15psi on a water cooled and intercooled Td04 with a standard 16 mitsu setup cracks you up?