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Author Topic: HX25 on a aaz ?  (Read 5327 times)

April 05, 2011, 01:35:09 pm

davidskipper123

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HX25 on a aaz ?
« on: April 05, 2011, 01:35:09 pm »
will a hx25 have laughable lag with moderate pump upgrades and the such?
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Reply #1April 05, 2011, 06:40:00 pm

RabbitJockey

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Re: HX25 on a aaz ?
« Reply #1 on: April 05, 2011, 06:40:00 pm »
i think it will be ok but i am not certain, the hx27 has been used before with good success
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Reply #2April 06, 2011, 12:24:24 am

colhel59

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Re: HX25 on a aaz ?
« Reply #2 on: April 06, 2011, 12:24:24 am »
I would also like to know i have one off of a case skid steer freebiie
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Reply #3April 06, 2011, 10:41:32 am

blackdogvan

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Re: HX25 on a aaz ?
« Reply #3 on: April 06, 2011, 10:41:32 am »
Post the map!
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Reply #4April 06, 2011, 10:48:05 am

R.O.R-2.0

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Re: HX25 on a aaz ?
« Reply #4 on: April 06, 2011, 10:48:05 am »
Quote from: blackdogvan on April 06, 2011, 10:41:32 am
Post the map!

thats the best thing to do..
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Reply #5April 06, 2011, 04:13:47 pm

davidskipper123

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Re: HX25 on a aaz ?
« Reply #5 on: April 06, 2011, 04:13:47 pm »
dunno where i could get the map from ?? all i can find is catalogues :(
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Reply #6April 06, 2011, 04:24:50 pm

davidskipper123

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Re: HX25 on a aaz ?
« Reply #6 on: April 06, 2011, 04:24:50 pm »


hope that gives someone an idea ?

is there any guide on reading compressor maps ? would like too learn and i think if someone posted a lil thread a about them quite a few people would benefit!!!
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Reply #7April 06, 2011, 05:32:35 pm

RadoTD

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Re: HX25 on a aaz ?
« Reply #7 on: April 06, 2011, 05:32:35 pm »
That turbo looks decent for an AAZ to me. A bit on the big side maybe, but it's good on it's own for 25psi easy, even 30 shouldn't be much trouble. It likely won't spool super quick though... it appears bigger than a K24

When I get home, I can find a guide to reading compressor maps, I'm at work right now though. If you google, a few things should come up. IIRC, Garrett's website has good info
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Quote from: R.O.R-2.0 on July 25, 2011, 02:57:45 am
enough boost is when you have 3 dimple marks in the hood from the valve cover nuts..  ;D
Reply #8April 06, 2011, 05:40:12 pm

RabbitJockey

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Re: HX25 on a aaz ?
« Reply #8 on: April 06, 2011, 05:40:12 pm »
looks ok from what i can tell, but i am not that great with compressor maps
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Reply #9April 06, 2011, 06:25:52 pm

RabbitJockey

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Re: HX25 on a aaz ?
« Reply #9 on: April 06, 2011, 06:25:52 pm »
i think 30psi would be too much maybe 25 at the very most and even that i think would be over spinning it
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01 Jetta TDI 100% stock daily
81 Rabbit:TDI-M ported head, Frank06 cam, PD intake, hybrid T3 turbo, Renault intercooler, Syl20 11mm pump, light weight fw, and yellow California Clutch clutch kit
Reply #10April 06, 2011, 08:33:19 pm

keaton

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Re: HX25 on a aaz ?
« Reply #10 on: April 06, 2011, 08:33:19 pm »
add a smaller turbo to help spool the bigger one  ;D
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Reply #11April 06, 2011, 09:12:02 pm

RabbitJockey

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Re: HX25 on a aaz ?
« Reply #11 on: April 06, 2011, 09:12:02 pm »
honestly i don't think this will be too big at all, it will be a good turbo for 20-25 psi
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01 Jetta TDI 100% stock daily
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Reply #12April 06, 2011, 09:43:58 pm

RabbitJockey

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Re: HX25 on a aaz ?
« Reply #12 on: April 06, 2011, 09:43:58 pm »
u no i get too confused when reading the maps there are so many variables, just disregard everything i posted haha
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01 Jetta TDI 100% stock daily
81 Rabbit:TDI-M ported head, Frank06 cam, PD intake, hybrid T3 turbo, Renault intercooler, Syl20 11mm pump, light weight fw, and yellow California Clutch clutch kit
Reply #13April 07, 2011, 08:10:02 am

Alcaid

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Re: HX25 on a aaz ?
« Reply #13 on: April 07, 2011, 08:10:02 am »
The compressor side of this turbo looks like a good candidate for a AAZ if head is optimized.

Calculations and plotting I just did:



The four points on the graph:

Green = 1bar/15psi boost @ 2000rpm
Yellow = 1.7bar/25psi boost @ 2700rpm
Orange = 2.0bar/29psi boost peak @ 3000rpm
Red = 1.7bar/25psi boost @ 4500rpm


If you run the turbo with max boost 1.7bar/25psi it would produce somwhere in the region of 175hp/230ft-lbs (crank numbers)
If you let the turbo peak up to 2.0bar/29psi in the middle range you would gain some torque, somewhere around 175hp/255ft-lbs


If the turbine side of the turbo is matched to the 1.9 litre displacement to support this boost curve is a different question…
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Reply #14April 07, 2011, 08:48:56 am

davidskipper123

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Re: HX25 on a aaz ?
« Reply #14 on: April 07, 2011, 08:48:56 am »
that sounds promising :)
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