Holset turbos

[Cjmartz2k]

Just some more info for fodder. I went out tonight on the way home from work and got some spool times.

3rd gear - .5 bar by 3.5k rpm - 1.0 bar by 4.2k rpm

4th gear - .5 bar by 3.2k rpm - 1.0 bar by 3.9 rpm

That's with the 19cm housing, RB26 ITB's and surge tank (short runners), 1.2mm headgasket (lowers the CR a bit), HKS 264 cams, and no VCT.

[MATTs14]

Im definitely interested in that hx35 housing. About how much will the one that you have flow? I want 400whp but i want some breathing room ya know but for sure get back with me on that. You can email me [email protected].

[RB24D]

Ok I have come up with my turbo combo I will be using .I will be getting a hx40 pro ( 6 blade billet wheel) and getting the bep t3 .70 ar housing that is not internally wastegated and has the 3 in v band for the down pipe. It should flow in the neighborhood of 72lb per min

[MATTs14]

Where did you find the bep housing with the 3'' v band and t3??? sounds awesome. Email me your info on that setup if you dont mind and hopefully i can get a setup like that. Just let me know pricing and specs on that hx40 pro with the billet wheel. I wish we could have some dyno sheets of people using the holset turbos. That would be nice

[MATTs14]

nevermind i found it

http://www.timsturbos.com/Turb....html

What all would i need to make this work on my turbo (hx35w)??? Different wheel or what???

[RB24D]

All you need is the bep housing and a holset hx35 per nick it is un bolt old hot side and bolt back on new hot side done! Same wheel and all

[DriftingisLame]

Wouldnt that make you're brand new twin scroll 6 boost manifold a waste of money matt?

The DSM guys get those housings out of convenience I think. Sticking with the stock 12cm2 twin scroll will be more efficient, and if you need a larger one, well I believe you can get a 16cm2 housing for your HX35, and still retain the twin scroll

[MATTs14]

Not really. Twin scroll will help later on. I probably will get a bigger housing and keep the twin scroll like you said. Does anybody know where i can get some sort of adapter to bolt on so i can have a 3 inch v band??? I heard there was but i have yet to find one

[Cjmartz2k]

Ok I have come up with my turbo combo I will be using .I will be getting a hx40 pro ( 6 blade billet wheel) and getting the bep t3 .70 ar housing that is not internally wastegated and has the 3 in v band for the down pipe. It should flow in the neighborhood of 72lb per min

Are you sure on that number? The highest hp compressor map I have ever seen for a HX40 is 69lb/min and that was a 6 blade wheel.

[RB24D]

That's what i thought as well but I spoke to a tim at http://www.theturbotrader.com/...d=209 and he said with their hx40 bolt on hot side it ups the flow to 72lbs but i did not ask to see a flow map . When I accually get it together I will see what kind of real flow numbers it will acheive.

[Cjmartz2k]

So, the "hot side" will flow 72lb/min--meaning the ex end of the turbo? If that's the case, you'd still need a compressor to push that much power. 30hp ain't going to make a whole lot of difference anyways when your talking 600+hp. I'm sure you'll be happy with it

[RB24D]

Ihope so if not jk

[Largekid]

I'm kind intrigued by these holset turbos now as well...I found a HX35W local with a 12cm^2 housing for a good price...but how can you tell if its a 7 or 8 blade wheel? Just count what you can see thru the compressor inlet? Also, does anyone know where there is some more info on the 35/40 hybrid? I think I could pull 500whp out of one of these turbos on 22lbs or so?

[Cjmartz2k]

Yeah, just count the blades you can see in the front of the compressor inlet.

I was running a HX35/40 hybrid with the smaller 8 blade HX40 compressor wheel before. I think I was close to 500rwhp, but maybe a bit short. I only had a 38mm wastegate though and I think my ex manifold pressure was so high I was pushing the turbo into choke hurting my power. Also, as I mentioned, it was the smaller compressor wheel. No dyno on the island here, but I was ticking off 122mph trap speeds in a 3100lb car + driver with a **** ton of wheel spin.

You could always get the HX35 now, then do the hybrid later after you start wanting more power (don't we always )

[Sil240]

Check out ATPTurboThey have the Ultimate Internal WastegatePlus I think they have Vband adapters also

Holsets are Internally gated stock right.I ported out the T3 hole when i used mine.But Due to the ATP WG flapper I could only do about 28mm.I wanted to leave a little room around the port so the flapper could seal.

[toadx8u]

yeah i run that atp product too...i love it...

[Largekid]

Yeah, just count the blades you can see in the front of the compressor inlet.

I was running a HX35/40 hybrid with the smaller 8 blade HX40 compressor wheel before. I think I was close to 500rwhp, but maybe a bit short. I only had a 38mm wastegate though and I think my ex manifold pressure was so high I was pushing the turbo into choke hurting my power. Also, as I mentioned, it was the smaller compressor wheel. No dyno on the island here, but I was ticking off 122mph trap speeds in a 3100lb car + driver with a **** ton of wheel spin.

You could always get the HX35 now, then do the hybrid later after you start wanting more power (don't we always )

yea, i'm hunting for 125+ traps...but not that much more...My car weighed 3100 w/ me in it, so that is a good basis for me as well. Was that with the stock ex. mani? Sounds like I need to do some investigating into this hybrid and maybe put it to work

[MATTs14]

Does anybody have any idea where i could buy some sort of adapter for my hx35 to give me a bigger vband??? I measured it and its about 2.5''. I heard that there was something that would bolt on but i never found it. I figured i could just cut out like a 3.5 inch hole and weld a v band to that but i wasnt sure.

[Largekid]

they do make one, i'm not sure where I ran across it though...i looked on ATP and timsturbo with out success though

[ANVIL]

good info in this thread guys! im pretty much sold on going holset for my next turbo setup (whenever that may be).

what kind of supporting mods would i need to be in the 480-520whp range? are cam upgrades necessary?

and Cjmartz2k how did you like that T04e on your rb25? thats actually what i have right now waiting to get installed. im going to be getting some 650cc injectors to go with it. my goal was to be at around 380whp. am i hoping for too much?

[Cjmartz2k]

The TO4e was alright. Big kick in the pants from the stock turbo, but it was about as laggy as the HX40 I have now, with about 200 less hp. I think you could tickle 400rwhp with the TO4e though (on a dynojet dyno at least). I made 399.5PS which is like 390hp at the wheels with my TO4e, but like I said, that was on a dynojet which tends to be a bit on the "optomistic" side.

I don't think you need cams to make 500rwhp, but it would be easier. I think I was close before with my hybrid holset and stock cams/intake/TB. The VCT really helped that thing spooling quickly too. If you can find a 7 blade HX35, I'd just install it instead of the TO4e considering it'll spool up a lot fast and make more power. O yeah, and you can probably score one on ebay for less than $300 with out trying to hard. 650cc injectors should be enough for even a HX35/40 hybrid, let alone a HX35 or TO4e. A walbro would be enough for all of those too I think. It was for me, but I stepped up to twin walbros for the HX40.

[ANVIL]

do u remember at what rpm u were at full spool?

i told myself id be satisfied with this to4e for awhile because i have other areas in the car (and other vehicles) that i want to put money into also. the biggest reason i went with it was its a direct bolt on replacement and im also getting side feeds. its a relatively cheap upgrade. if i were to go hx35 id have to get a new manifold/wg and redo my dump/downpipe setup wouldnt i?

[Cjmartz2k]

Well, you can't beat bolt on. Internally gated or something? I didn't know they made them like that. It's been a few years since I had the TO4e on there, but IIRC, I think it was at 1 bar by 4 grand or maybe a bit more. Laggy as all ****, but I had a P-trim ex wheel on it and a pretty decent sized a/r. It wasn't a very nice turbo IMHO, but with a different wheel, I'm sure I would have liked it a lot better.

[ANVIL]

im still new to turbos but i do know its a 50/60 trim t3/t4 garrett, internally gated. i hope lag isnt too big of an issue...

[240z4u]

Anvil, I have a T3/T04e 60 trim with .63 ar exhaust. You must be talking about this because a full t4 isn't bolt on. I am making in the 400s with it, but am very curious about the capability of the holset's.

[Cjmartz2k]

Ahhh, I thought you were talking about a full T4 TO4e. Those things come on a lot quicker. 240z4u, what does yours hit 1 bar by? Also, you had it dyno'd?

[240z4u]

I am under the assumption that its a t3/t04 because a t4 wouldn't be a bolt up at all.

Honestly dude? Been on the rollers one time, and I didn't plot boost. The dyno run didn't go well because I am a moron and was trying to run higher boost than my W/G spring would allow. I made like 325rwhp and 380ft/lbs of torque lol. (dyno dynamics)

I did go to the track and with it literally falling on its face into 3rd (tuning problem) I trapped at like 112 or so. I am considering dropping it off somewhere this winter after redoing the i/c plumbing and getting it tuned properly.

Its too cold out to make a 1 bar pull on the street. Ill just blow the tires off (I have snowtires on right now). So it will have to wait until the dyno to find out. Anything else specific you wanna know?

Evan

[ANVIL]

i havent installed mine yet. the person i bought it from said it was t3/t4 t04e 50/60 trim garrett. on the side the i/c piping bolts onto it says a/r .50. so im guessing the exaust is .60 and its a t3/to4e. and its internally gated, not sure what its set at.

you still have those 650's for me right 240z4u?

[240z4u]

Yeah dude, sure do. I haven't forgotten. If lazyass L0nestar would send me my other rail I could start this project! lol

Evan

[l0nestar]

Yeah dude, sure do. I haven't forgotten. If lazyass L0nestar would send me my other rail I could start this project! lol

Evan

Who.. me? Didn't know you were really waiting on it.

Ever find out bout that HY? My phone died earlier today.