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Raceboy
Joined: 01 Mar 2004
Posts: 2326
Location: Estonia, Europe
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 Posted: Fri Jul 24, 2015 4:53 am Post subject: |
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Can't complain 
We went to test our cars with few friends on tuesday, seems that 924 is quite fast
https://youtu.be/KVvy50RNoLE
BTW, there was also an Audi RS2 with heavily modified engine (and big Turbobandit turbo running at 2.2 bars) and 600+ hp. At lauch he pulled ahead (though just ~1/2 car length) but I caught him quite easily in 3rd
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'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold 
'84 924, turbocharged, sold.
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WEASEL149
Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield
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| Posted: Fri Jul 24, 2015 6:45 am Post subject: |
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| Raceboy wrote: | Can't complain
We went to test our cars with few friends on tuesday, seems that 924 is quite fast
https://youtu.be/KVvy50RNoLE
BTW, there was also an Audi RS2 with heavily modified engine (and big Turbobandit turbo running at 2.2 bars) and 600+ hp. At lauch he pulled ahead (though just ~1/2 car length) but I caught him quite easily in 3rd |
Holy Holset Batman! That's fast! 
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morghen
Joined: 21 Jan 2005
Posts: 8886
Location: Romania
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| Posted: Fri Jul 24, 2015 8:25 am Post subject: |
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Wes, how many of those holset turbos do you have again?
I might need to do some calculation against my k27 thing
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WEASEL149
Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield
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| Posted: Wed Jul 29, 2015 1:37 am Post subject: |
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| morghen wrote: | Wes, how many of those holset turbos do you have again?
I might need to do some calculation against my k27 thing |
I have:-
HE221W - Best 'small frame' Holset there is currently - good for 370-380hp. T2 in size and light rotating assembly.
2 x HX35 - one has 8 blade 56/83 compressor, other has 8 blade 54/83. One I got very cheap as it needs a rebuild - bought for spares.
HY35 with 10cm turbine housing. Also acquired a brand new 9cm housing for it from the states cheap that has the ~4" downpipe outlet.
I have what I think is a HE341 but it's oddball and needs measuring.
This was very cheap but is perfect, just needs cleaning.
I have to stop myself from thinking of a compound set-up 
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Raceboy
Joined: 01 Mar 2004
Posts: 2326
Location: Estonia, Europe
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| Posted: Wed Jul 29, 2015 4:08 am Post subject: |
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I would be interested in the HE221W perhaps. Planning to sell it or no? If yes, how much? What size of turbine wheel it has (ind/exd).
_________________
'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold
'84 924, turbocharged, sold.
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WEASEL149
Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield
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| Posted: Wed Jul 29, 2015 4:29 am Post subject: |
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| Raceboy wrote: | | I would be interested in the HE221W perhaps. Planning to sell it or no? If yes, how much? What size of turbine wheel it has (ind/exd). |
It took a while to find the HE221W for reasonable money.
I don't plan on selling it yet but I may do in the future depending on how the car drives with the bigger turbos.
It has 6 blade 60/44.2mm compressor with 52/46.6mm turbine and 7cm housing.
Most come with 6cm housing and there is a 8.5cm housing but I've never managed to find one.
I'll PM you further details...
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morghen
Joined: 21 Jan 2005
Posts: 8886
Location: Romania
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| Posted: Wed Jul 29, 2015 4:35 am Post subject: |
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Thats an interesting tubo i need to find one too
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WEASEL149
Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield
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| Posted: Wed Jul 29, 2015 4:37 am Post subject: |
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| morghen wrote: | | Thats an interesting tubo i need to find one too |
The perfect turbo for a modified 931 road car IMO.
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morghen
Joined: 21 Jan 2005
Posts: 8886
Location: Romania
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| Posted: Wed Jul 29, 2015 5:35 am Post subject: |
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looks like it...when the K27 goes(tho with the amount and how i drive that car it is never going to go) i'll flange in one of those HE221W for more low rpm fun.
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WEASEL149
Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield
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| Posted: Wed Jul 29, 2015 8:20 am Post subject: |
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The only compressor map I can find for it:-
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morghen
Joined: 21 Jan 2005
Posts: 8886
Location: Romania
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| Posted: Wed Jul 29, 2015 4:19 pm Post subject: |
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That is one little fast spinning turbo..perfect for the 2L.
As i see it its worthless to make it push more than 1bar unless you're ready to raise the rev limit.
I wonder how it would feel/drive compared to my old big piece of metal K27
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Last edited by morghen on Wed Jul 29, 2015 8:17 pm; edited 1 time in total |
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WEASEL149
Joined: 19 Aug 2005
Posts: 595
Location: UK, Sheffield
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| Posted: Wed Jul 29, 2015 6:26 pm Post subject: |
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Happy to discuss in my thread, rather than mess up Raceboy's.
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Raceboy
Joined: 01 Mar 2004
Posts: 2326
Location: Estonia, Europe
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| Posted: Thu Aug 13, 2015 10:23 pm Post subject: |
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In mid-July went to shoot some photos with my friend who is a professional photographer:
And on Sunday during 3rd gear pull after trying more boost, this happened:
Nothing more, just the headgasket. Granted, the headgasket was reused from last time I pulled the head last autumn and wasn't in best shape even though it hadn't any significant miles on it.
I did order new headgasket from EBS and it should hold up just fine. Checked the pistons and cylinder bores too, not even slightest signs of detonation. That's good news I guess, driven all the time with pump fuel (98 here).
_________________
'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold
'84 924, turbocharged, sold.
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morghen
Joined: 21 Jan 2005
Posts: 8886
Location: Romania
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| Posted: Thu Aug 13, 2015 10:57 pm Post subject: |
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Nice pics !
Did the head lift or you're just borderline close to the gasket strength?
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Raceboy
Joined: 01 Mar 2004
Posts: 2326
Location: Estonia, Europe
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| Posted: Thu Aug 13, 2015 11:10 pm Post subject: |
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I think it is the problem related to this specific headgasket. I had distilled water in the system in october when one night we suddenly got -12c and cooling system froze. The head gasket was concave a bit in waterjacket area and was probably weakened from this. You can see the concaveness around the 3rd cylinder.
But I will receive new gasket next week and we'll see
_________________
'83 924 2.6 16v Turbo, 470hp
'67 911 2.4S hotrod
'90 944 S2 Cabriolet
'78 924 Carrera GT replica
'84 928 S, sold
'91 944 S2, sold
'82 924S/931 "Gulf", sold
'84 924, turbocharged, sold.
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