Author Topic: Holset HX35 ! Who has made one work on their setup (Read 10584 times)

subsonic · « **on:** March 26, 2007, 07:57:51 pm »

What could a person do with a Holset HX35 w/a 9cm exhaust if they happened to be able to get their hands on one? :twisted: Hybrid setup possibilities? I have a stock t3 and a stock k24 to play with. Will a Giles pump, Ported 1.9 head and Daves exhaust setup, manifold and downpipe out a 2.5" create enough flow to turn a big honk'n turbo like this? What would you need to do to get the boost on befor the rpm's are way high? Just considering the possibilities.

Jim

DVST8R · « **Reply #1 on:** March 26, 2007, 09:36:15 pm »

Well from what Andy has reported, you will not see decent boost till 4000-4500rpm. So yes you can make it work, you just have to be willing to make some revs, and dump a ton of fuel in.

mdonau · « **Reply #2 on:** March 27, 2007, 12:21:10 pm »

hi..

get am Mercedes 3,0L 24Valve Diesel for that hx35

else t3 or k24 are fine for a 1,9

greets, Michael

Audi80 · « **Reply #3 on:** March 27, 2007, 12:29:00 pm »

Quote

hi..
get am Mercedes 3,0L 24Valve Diesel for that hx35

Too small for Merc, HX40 or HX50 would be enough

I´m going to test a Schwitzer S2B in Scirocco, it is a bit smaller than HX35. I am also dumping TONs of fuel and revving it HIGH :lol:

subsonic · « **Reply #4 on:** March 27, 2007, 05:52:48 pm »

Wow, that must be some Mercedes! Can the hot side be changed to allow for faster spool? If so, what size/ part would you reccomend? If I use either the t3 or the k24 I think I will go past the good performance envelope of the turbo, and raise the EGT's to much. Besides the swap of the Mercedes .48 hot side, are there other options?

Benjamin · « **Reply #5 on:** March 28, 2007, 08:29:35 am »

Quote from: "Audi80"

Quote
hi..
get am Mercedes 3,0L 24Valve Diesel for that hx35

Too small for Merc, HX40 or HX50 would be enough

I´m going to test a Schwitzer S2B in Scirocco, it is a bit smaller than HX35. I am also dumping TONs of fuel and revving it HIGH :lol:

i think reving it high with rons of tons of feul result in a plunger failure.
a 11mm plunger can not take +5000rpm for to long.

Greetz, Benjamin

Audi80 · « **Reply #6 on:** March 28, 2007, 10:38:32 am »

Quote

i think reving it high with rons of tons of feul result in a plunger failure.
a 11mm plunger can not take +5000rpm for to long.

Greetz, Benjamin

But 12mm pump will :shock:

Benjamin · « **Reply #7 on:** March 28, 2007, 11:59:21 am »

Quote from: "Audi80"

Quote

i think reving it high with rons of tons of feul result in a plunger failure.
a 11mm plunger can not take +5000rpm for to long.

Greetz, Benjamin

But 12mm pump will :shock:

lots of :?: :?: :?: for me.

my friend broke his 11mm plunger when he was driving 5500rpm in 5th gear for 2km.
i think named tintin was also not running very much rpm with his two 12mm plungers.

so, how much rpm do you think you can run audi80?

Greetz, Benjamin

Audi80 · « **Reply #8 on:** March 28, 2007, 12:09:10 pm »

Quote

lots of :?: :?: :?: for me.
my friend broke his 11mm plunger when he was driving 5500rpm in 5th gear for 2km.
i think named tintin was also not running very much rpm with his two 12mm plungers.

so, how much rpm do you think you can run audi80?

Greetz, Benjamin

6000+rpm

2km at 5500rpm :shock: :shock: Why? I can´t drive 2km at 230-240km/h anywhere :? Also this is IDI, not TDI.

zaprzal · « **Reply #9 on:** March 28, 2007, 12:46:16 pm »

Quote

i think named tintin was also not running very much rpm with his two 12mm plungers

I think named tintin had m-tdi... On IDI it's a bit different - you can rev higher

Darkness_is_spreading · « **Reply #10 on:** March 28, 2007, 04:56:00 pm »

Yeah definetly IDI 5500 RPM the M-TDI is a 1.9 remember, much heavier internals but the pump allows for crazy fueling which is wicked sick.

jtanguay · « **Reply #11 on:** March 28, 2007, 06:08:12 pm »

well the TDI injection pressures are around 250 bar right??? IDI is only about 155 bar... you can just imagine how much stress is on the plunger at 250 bar... way up top in the revs the stress must be so great that yes... it would shatter! but on a lower pressure IDI there is much more potential for high rpm's. isn't malone revving to 6000 rpm on his Giles super pump??? :twisted:

its a trade-off really... high rpm power or low rpm torque. i'd personally prefer an m-TDI because high rpm just sucks back fuel... all out race applications would want high rpm though.

SMOKEYDUB · « **Reply #12 on:** March 28, 2007, 06:31:24 pm »

malone only has a 9mm pump the last time he ran his idi. I have a 12mm and i rev the snot out of min religously and i hit 5800 rpm? roughly...

Audi80 · « **Reply #13 on:** March 28, 2007, 08:11:28 pm »

My pump is locally custom made, it will rev ~6000 with full fueling :wink:

scopefrfd · « **Reply #14 on:** March 29, 2007, 05:38:27 am »

I lost an 11mm bosch pump head..over reving it..When I took it apart I noticed the plunger springs were much stronger.

A possible solution...would be to use 10mm springs on an 11mm or 12mm pump head for high reving. It would lessen stress on the pump head and I doubt the plunger would "float"