Turbo Fuel Question

[Ginsterman98]

630's and a PTE 6262 turbo with a billet comp wheel will out flow a 35r by 30%. MS or VEMS.

[kamotors]

the h1c was lazy? My HX35 spools pretty well on a 2.5L M50... I don't drive the car hard so my latest log doesn't give an accurate number, but I have 7.5 psi boost @ 3473 rpms @ 46.9% throttle. 100% throttle in a high gear sees full boost far earlier and I'll creep into boost by 1400 rpms.

H1c was very lazy, it was much bigger than my gt35, it was the large h1c with the antisurge inlet and huge turbine housing.

[Cyrix2k]

What cm^2 is your turbine housing. Is it twin scroll?

I have the 12cm housing and it is twin scroll, but it's on a single scroll manifold.

[stanhayward]

the h1c was lazy? My HX35 spools pretty well on a 2.5L M50... I don't drive the car hard so my latest log doesn't give an accurate number, but I have 7.5 psi boost @ 3473 rpms @ 46.9% throttle. 100% throttle in a high gear sees full boost far earlier and I'll creep into boost by 1400 rpms.

What cm^2 is your turbine housing. Is it twin scroll?

[Cyrix2k]

I'm actually on a gt35equivalent Turbonetics, the big holset was very lazy and late to spool. HX50 would be way too big, I can hardly spool the gt35 below 4k. I creep up to 1 psi by 3500rpms.

Your reliability will be 100% up to your tuning abilities.
I'm at 18psi now and making over 400whp simply because I made a more aggressive tune.

the h1c was lazy? My HX35 spools pretty well on a 2.5L M50... I don't drive the car hard so my latest log doesn't give an accurate number, but I have 7.5 psi boost @ 3473 rpms @ 46.9% throttle. 100% throttle in a high gear sees full boost far earlier and I'll creep into boost by 1400 rpms.

[Good & Tight]

HX50 will work well around 18psi and up. I tried the HX55 on my B34 M30 with a twinscroll manifold and it spooled up pretty decent but when it lit up all hell would break loose, it would spin the drag radials at 90mph.
IMO the HX50 is way too big for a 2.8 and the car won't be enjoyable unless it's WOT all the time or using it as drag car.

[kamotors]

Hmm were you twin-scroll? Because as I said the PO was seeing 10 psi at 3000 rpm on an essentially stock 3.0L Toyota 7M-GTE

not twinscroll

[stanhayward]

You, sir, are my hero. I'll keep that in mind ;)

[Pootis]

[stanhayward]

I'm actually on a gt35equivalent Turbonetics, the big holset was very lazy and late to spool. HX50 would be way too big, I can hardly spool the gt35 below 4k. I creep up to 1 psi by 3500rpms.

Your reliability will be 100% up to your tuning abilities.
I'm at 18psi now and making over 400whp simply because I made a more aggressive tune.

Hmm were you twin-scroll? Because as I said the PO was seeing 10 psi at 3000 rpm on an essentially stock 3.0L Toyota 7M-GTE

[kamotors]

I want room to grow, this is just the first stage on narrower tires and stock axles for the street, but I'd like to make more than that in the future. After I save up $1700+ for DSS axles... And then maybe some flares and 245s.

KAmotors is making 380whp with a Myster-e head at 15psi with an H1C, if I'm correct, so I think with an HX50, that head and a 2.8 it should make about 40-50 more whp, yeah? The limit of the Miller set up is 20psi so I could go higher; the engine could take it, right?

I'm actually on a gt35equivalent Turbonetics, the big holset was very lazy and late to spool. HX50 would be way too big, I can hardly spool the gt35 below 4k. I creep up to 1 psi by 3500rpms.

Your reliability will be 100% up to your tuning abilities.
I'm at 18psi now and making over 400whp simply because I made a more aggressive tune.

[stanhayward]

Yeah, he's also on water/meth. I still want him to go to a real dyno!
I'm just saying the gt35r was efficient enough for your goals. Bigger isn't always better!
Dan Miller can also tune megasquirt, if that's the route you're taking.

I really doubt you'll need axles till you hit the 500whp mark btw!

True, I'd forgotten that. Maybe I will ramp up the boost a bit. This is my first time modifying an E30, or any car, so I think I'll just set up what I've bought for now. If I don't like something, I'll change it around, but for now we'll just see what happens.

I don't know if he's on this forum, and I don't remember his user name, but the PO of the turbo had it in a 7M supra-engined E30. His motor was stock save arp head studs I believe and he was seeing 10psi by 3000rpm. That was the only reason I got a turbo this big.

Good to know about the axles, might persuade me to pick up an MS system and crank the boost up sooner ;)

[ak-]

Yeah, he's also on water/meth. I still want him to go to a real dyno!
I'm just saying the gt35r was efficient enough for your goals. Bigger isn't always better!
Dan Miller can also tune megasquirt, if that's the route you're taking.

I really doubt you'll need axles till you hit the 500whp mark btw!

[stanhayward]

Why would you trade a big turbo (in proportion to your m20) that is already efficient enough to reach that goal for something even more huge lol.

Even with the huge holset, you've got to have one hell of a built m20 to push 400+ with 15psi.

I want room to grow, this is just the first stage on narrower tires and stock axles for the street, but I'd like to make more than that in the future. After I save up $1700+ for DSS axles... And then maybe some flares and 245s.

KAmotors is making 380whp with a Myster-e head at 15psi with an H1C, if I'm correct, so I think with an HX50, that head and a 2.8 it should make about 40-50 more whp, yeah? The limit of the Miller set up is 20psi so I could go higher; the engine could take it, right?

[TheTacoMan]

I have 30lbs and Im at 7psi, they are at 80% already.