More Power Please!

[travis1991e30]

So I really am wanting to build a turbo motor and from what I've read, many people are using super eta blocks with an i head and megasquirt blah blah blah...

I was wondering if anyone has ever used a regular eta bottom end with o-rings and an i head with schrick 272 cam to make a 2.7 stroker with low compression for higher boost...

Don't hate me but I've looked at ebay turbo kits and they look nice for the price. I've talked to dyno specialists about them and they've had good luck with them. They also said that an intercooler does not need to be used if boost is 10 psi or lower.

I am running the Miller Performance 3" MAF and WAR Chip on a stock i engine with schrick 272 cam, 19lb injectors, adjustable cam gear, crank scraper, and cat-back exhaust.

My question is, if I freshen up the eta bottom end with arp rod bolts and o-ring the block and throw my i head on it with whatever turbo I end up with and run 10lb of boost without intercooler, the 19 lb injectors, and a miller tune, would this be a successful motor with crazy torque and power? Or would it be a dog since the pistons would be such low compression.

Again I am only playing with the things I have already since this car is my daily and it is difficult to let it sit for a long time while I work and go to school. If anyone has suggestions on if this setup would be a boost or bust, let me know.

TEACH ME HOW TO TURBO!

Thanks.

[Peattie]

from what I've read and heard, 19lb injectors are to small and wont hold boost and miller is harder to tune with than megasquirt. I'm running 60lb injectors and have room to play if I ever decide to go higher in boost. And the stock clutchs usually only handle 250hp so youll need a new clutch. I'm one of the few running a ebay turbo kit with a gt28 and I like it alot. 10psi and I get boost at about 1600 rpms.

Thetacoman got all of his turbo parts and installed them in a weekend. I'm not much help since I'm new to turbo'd e30's lol but hope the little info helps!

[Northern]

The stuff in ebay kits is such garbage you'd be replacing the majority of it in a year, so why not just buy quality stuff to begin with, its not much more expensive to do it right the first time.

Semi-related: My dumbass honda friend just replaced his ebay turbo because the turbine shattered after 6 months of use. He's the same kind of guy who claims his 1.8L car makes 400whp at 10psi, and has enough goddamn stickers on the windshield that you have to hunch over to see the road. Don't be that guy.

And yeah, for injectors, get some siemens deka 60lb/hr injectors for like 200$ off the forums and don't look back. And look into megasquirt.

[ColdAsLife]

And yeah, for injectors, get some siemens deka 60lb/hr injectors for like 200$ off the forums and don't look back. And look into megasquirt.

Truth be told! flip the Miller and talk to WhodWho about getting a MSPNP. Also boost is addicting, you may think you only want ten pounds now but the second you feel 10 you will want 12, and then you will tell yourself "hell ive come this far, why not 1 bar?"... Think wholistically and most importantly come to grips with your budget and then expect to pay double.

[1owNslo]

truth be told! Flip the miller and talk to whodwho about getting a mspnp. Also boost is addicting, you may think you only want ten pounds now but the second you feel 10 you will want 12, and then you will tell yourself "hell ive come this far, why not 1 bar?"... Think wholistically and most importantly come to grips with your budget and then expect to pay double.

+1

[MF DOOM]

They also said that an intercooler does not need to be used if boost is 10 psi or lower.

Such a honda thing to say.. Intercoolers are cheap, easy to install and serve an important purpose. I saw this 5.0 pootang at a car show awhile back that was intercoolerless. Charge pipe straight from the compressor to the intake. SPent a couple minutes looking for some sort of injection system but nothing was there. Stupid imo. UNLESS youre running e85 because that shit burns cold as is. even then I still would run a cooler. Every serious build ive seen uses an ic.


Theres plenty of turbos off of stock applications that can be had and rebuilt for cheap. diesels, volvos, nissans, etc. Kamotors seems to love his Kinugawa and theyre priced decently.

Whats the compression on a i bottom end? Like 8.8? Im 8.5 on my m42 with a 3.73lsd and i was very, very surprised at how good it pulls out of boost. I thought it was going to be a total turd but its only half turd

[Chriskbmx]

first thing first, don't go the miller route! Everyone has issues with them. just do the megasquirt pnp units from the forum. You will get a better tune and just better drivability all around. Second thing is, you need to intercool it, that's practicly free horsepower. intercoolers are cheap, or can even be had off of junk yard cars(I don't recommend the junkyard route, but seems you want to go cheap) for just a couple bucks. by cooling the intake charge the air is denser meaning you can use more fuel and timing. This means more horsepower and a ton more reliable. Third thing is don't go with a ebay turbo kit. You can buy better stuff for less. get like an hx35 for a turbo, because they can be had for super cheap. some people have good luck with ebay, turbo manifolds or adapter. Usually people get the flange planned to make sure its flat, and get the welds re-welded for extra security. Also the boost number really doesn't apply between turbo set ups, depending on compression and what type of turbo you have it will flow a different cfm value between different turbo's just as an fyi. I didn't understand that till I really started to study boost. You will need injectors bigger than 19 pounds, most will recommend something 40lbs or bigger which is reasonable. Also if I were you sense you want to use arp bottom end hardware, I would also stud the top end and go with a goetze headgasket. Hope I didn't confuse you, with the clutter of this information, grammer is deffinitly not my best quality. This is also by no means the only way to boost an e30, this is just my opinion. I believe that if you are going to do boost, and then plan to daily your car, you need a good tune, and quality parts. I forgot about the clutch, you will definitely need something better, depending on the actual power rating you are gonna make there are tons of options out there.

[Chriskbmx]

I again am sorry about the grammer, should have done better in English class in high school.

[wenbeaver89]

I ran pieces from an ebay kit on my e30 m50. The manifold, turbo and intercooler was from ebay. The manifold rewelded for extra strength and still cracked in like 5 months. switched to a good-n-tight and i love it. spools way better too. I'm still running the ebay turbo and it is doing fine although i would pry get a holset if i did it again. I bought the whole kit off a friend so thats the only reason i'm running it right now!

[PeteD]

Don't know why everyone is complaining about Miller. It works just fine for me and had more than ample tuning capability.

[kamotors]

Don't know why everyone is complaining about Miller. It works just fine for me and had more than ample tuning capability.

try megasquirt and then see how much you were missing out on. your car will idle better than stock, make plenty more power and get MUCH better gas mileage.

Th only thing miller works well for is small turbo's that get a good amount of boost in first gear. If you have a decent sized turbo that only gets like 5psi in first gear you will run pig rich in first gear, stall out and likely bog while shifting. there was no medium for me it was either good in first gear, lean in second or rich in first and good in second. As a daily driver and auto-x car is was absolutely terrible.

[ak-]

What everyone said in this said is pretty much true.
Ebay intercoolers suck too btw. They heat soak SO FAST compared to reputable branded ones.

[einstein57]

Here is a pretty good build to follow on a budget. http://www.dirte30.blogspot.com/sear...&by-date=false I put together a similar kit myself for pretty cheap but i have yet to install it. You don't need to go fancy on the motor for 10psi. Just metric blues and your set. I'm running 18psi on a stock m20b25 on a re-used set of blues and a Goetze headgasket.

[ColdAsLife]

Just metric blues and your set. I'm running 18psi on a stock m20b25 on a re-used set of blues and a Goetze headgasket.

Same here, so far so good.