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Posted by spadepro22, Nov 27, 2012
Turbo System Tech - 4G63 turbos, Intercooling, Boost Control, Wastegates, etc.
Get an HX40 for that price BRAND NEW with a BEP T3 or Bolt on and make 69+lb a min problem solved.
If you add meth,well I'm sure you know the answer.
Bud, cut the crap and go Holset too
Where can new hx turbos be found, and what's your spool time?
Um directly from cummins, or get in contact with justin. i see 22 psi by 4k and the turbo isn't even awake.
Hehehehehehehehehehe seriously though. If you got one, you would wonder why you didn't earlier, plus you cant beat the spool sound of a Holset.
But when I do, I bet I see 22 psi, under 4k.I'm not gonna wai till 4k for my turbo to spool..Call me a weirdo, i'm used to it.
That's part of the holset downside with respect to the typical street dsm.
With a 400whp goal why not run a 20g?
Just think about it this way, lag= fuel Ecomomy on the highway, and it spools in 1 and half a seconds when your going through the gears.
Fuel economy, who the hell cares about that.
I went from the stock 17/18 mpg to about 22/23 with a shift box if you really want to know.
I have tdo5h 20g, but I doubt ill get there.
What do yall think about a hx40 with hx35 turbine wheel with bolton housing? Seen one in classified.
You will not get 400 AWHP on pump gas with a 20g... well i don't think so anyway. Im running my HX40 in the bolt on housing and its great, if you wanted 400 hp it makes it easily on pump you will just have to deal with some lag. Of course being the power hungry guy i am, ill be going T3 sometime in the future. I'm not satisfied with 400, need more boost for 600!
How is that a down side? It makes 400WHP on pump gas when barely pushing it( not even awake yet)... That seems like an upside to me. The turbo has a WHOLE lot more in it. I'm confident i could get 500awhp on pump gas if i just turned up the boost and messed with timing a little. I only made 400 on the dyno cause i had some crank pulley and cam gear issues and didnt wanna push it too far until the issues were fixed, and now that they are ill be going up to 27psi and up from there. Everyone says they are worried about lag, but i daily drive my car and believe me 4k rpm comes up fast and your already at 20+ psi, I probably saw 27 when i was running it with LOW timing causing slower spool, by 4300. I just cant say enough good things about the cummins turbos.
Edit: i just realized you were asking about a hybrid Holset, i think there was bad reviews on that being that the HX35 shaft wasn't really meant for that big of a compressor or something. But id ask Turboglen he runs one and seems to like it got good numbers also.
It's a down side to run a turbo out of its efficiency range. Nobody is doubting the ability of a HX40 to make 400 or 500 whp. This fact doesn't always make it the best option. "27psi and up from there" isn't an option on the typical street dsm. I'm not saying they don't have value as a great bang for the buck turbo, I'm saying they need to run higher boost, comparatively, to make the power they should.
I say push the 20g on meth first.
OP: Just looking at your avi and profile, you can also free up additional power with a retune on speed density. The car would then be close to 400whp, and will have a large, useable powerband.
Terrible wheel/housing combination. I'd rather see a HX40 turbine wheel with a HX35 compressor....at least you'll know you aren't going to hit an airflow wall.
Plenty of good pump gas turbos out there. The HY35's been over 500 on pump gas but requires a T3 manifold and custom o2 housing....but when you only spend $250 on the turbo, it allows a lot of room for additional mods like that.
You can't think quick-spooling/big-power/pump gas. One of those three things are going to have to go in order to reach your goal. You can have a quick-spooling pump gas turbo, but it won't make big power. You can have a big-power pump gas turbo, but it won't spool fast. You can have a quick-spooling big-power turbo but you're not going to run 93. Comprendō?
C'mon Justin you are a miracle worker. Give us a quick spooling, pump gas turbo that can make big power! .
More airflow potential at 59 lb/min. Slower spool due to size.
Holset HX35- $250
BEP .55 Housing- $250
Punishment EWG O2- Already owned
Cams and supporting mods- Already owned
Oil feed and drain setup- About $150
So for around $650 you'll have a faster spooling turbo with over 50 lbs/min airflow potential. Sure, that's less than the Green XL. But your only shooting for 400hp, your saving over $400, and you'll have a turbo that is just as bolt-on.
Or a regular FP HTA Green
With the .55 BEP housing on pump gas, people have reported 3500-4000 rpm. The biggest factors in that are tune and cam size. And what gear your in of course.
IMO 3500 is hard to believe, but majority rule says the HX35/.55 should spool before 4k. Which is quick for a 450-500hp turbo.
They recommend there oil feed kit for this turbo which is 110 I think.