Sundance 6g72 "3.0 turbo build thread"(N/A DYNO SHEET pics inside)

[Spiritman]

why dont u consider the 4 bar map upgrade?

[RoadWarrior222]

We barely ever see these things going over 20 psi with getting hairy as F#@K, so... 4 bar is not an upgrade, it's a lack of resolution for street tuning.

[Sundance 6g72]

4 bar is not out of the question, ill have to buy the 4bar anyways because i want to run MSpro in whatever chassis i try to put this motor into next (lots of ideas) but right now its in the duster and i dont want to mod the current MS because it works as it is right now. I think 16-18psi on a hx35 with the lovely cams im getting will get me over 400whp and be more than i can handle in a front wheel drive econo car.

i'd say holset hx35, it is a good match for the size of your motor, i was going to buy one, but couldnt find one complete for the right price so i bought a turbo from shadow. the "he" turbo's are real nice too and flow a lot on the compressor side but the exhaust side is kind of tiny for a strong 300-450hp 3l in my opinion, (basically a .63ar t3) the hx uses a twin scroll setup, but you can cut it back and port it like boosgeek did, or personally if i were you i'd modify the t3 flange to be a twin scroll.
your going to love the cams, i got the entry level ones, and even with just 3psi for ring seating my car is a riot to drive. tons of torque and then the hp comes on strong in a nice balanced way. look fwd to 15-20 psi.

hx35 it is then. I havnt read up on the whole twin scroll thing yet but from what i understand, separating the front head from the rear head does not count as twin scroll.

[Sundance 6g72]

silly question, will the hx35 bolt to my kmperfomance crossover?

[Spiritman]

yes it will.

from your local badass spirit specialist

[Sundance 6g72]

One i might be sourcing as a t3 flange? I never paid attention when i got my cheep turbo

[Spiritman]

yes the hx 35 i have on my shelf is a t3 flange. and im sure most of ed built stuff is also

[shayne]

by design a twin scroll keeps the exhaust pulses as isolated as possible to provide the turbine with as much energy as possible to drive the exhaust turbine. separating front and rear banks is exactly what you want to do for our motors with twin scroll. twin scroll is getting more popular as time passes because it can combine the benefits of a large a/r for flow, with the proper flow to deliver strong exhaust gas pulses. lots of flow, and quick spool.

[Sundance 6g72]

okay wasnt sure. i know the hc1 we just got for my buddies g54 is twin scroll but his manifold is not.. we were thinking about modifiying it but the only way to do that easily would be to run cyl 1&2 together and 3&4 together but i know thats not the right way for a 4cyl like his.

i guess it would not be super hard to modify the kmp crossover. the hardest part for me would be to get the surface completly flat when im done, not sure i want to pull the crossover and get it milled flat *lazy*

we'll see when it coms down to it. I guess id rather mess with the crossover than port out the housing.

[Sundance 6g72]

so diy claims 95# injectors are good for 510 crank hp on e85. im assuming thats at 43.5psi. I think it would be closer to 600whp but either way, that sounds perfect for me in the event that i can push this motor that far. who knows.

[RoadWarrior222]

Here's hoping, but that fuel spray will displace a bit of air, which means your effective intake CFM for air drops a bit. So you gain something with e85, but also may lose something. Just thinking that 'coz the sohc 3.0 isn't the breathiest head evarrrr.

[c2xejk]

e85 packs it's own air. the rumors I hear are that it adds ~5%whp on normally-aspirated cars because of the extra O2.

[Sundance 6g72]

i know the car felt faster after i made the switch, either way.. 95s are the same cost as 75 and 85#

[Sundance 6g72]

on a side note, anyone know of a coupler or something that will let me go from 2 2.5" pipes to a single 3inch pipe? Talking intake pipe. think of how ed had his intake but both pointing toward the passenger side.

ive been contemplating the easiest way to get a good intake plenum and the dual plenum on the stock lower seems to fit the bill the best because i cant find a montero lower intake anywhere. might look into my stealth one again but im not feeling it.

[RoadWarrior222]

Can get 'em for exhausts http://www.summitracing.com/parts/mpe-10778

---------- Post added at 12:52 PM ---------- Previous post was at 12:51 PM ----------

Or in the intake, just hit up Home Depot, plumbing section.. forget which is rated to 100psi though..

[Sundance 6g72]

as long as it does not melt

not wanting to buy another 2.5inch to 3inch coupler that im currently using on my throttle body.. it was $20 before shipping if i remember right.

or maybe it was the stupid 2inch to 3inch coming off my turbo

[RoadWarrior222]

Think it's the white PVC the stuff they make tater cannons out of, is best stuff to use, but joints won't flow all that well.

[Irocelectric93]

Did you ever find out if the v3 boards will do low or high impedance injectors or both? I thought if it had a 3.57 board you could go either way but i might be making that up. Ebay for a montero lower. I got one a little while ago for like 30 or 40 bucks.

[Sundance 6g72]

Ill double check with diy when i order, im almost positive that my 3.57 board will do it


Might be getting an hx40 $275. Rebuilt by bullseye here in muskegon

[Irocelectric93]

HX40 would be a good match up as well as the hx-35. I'd personally lean more toward the 40 myself. Too bad i just sold a q45 throttle body or i could have sold you that for cheap.