[s-cars] Triple K part numbers -- Ned's reply

Thu Oct 2 13:02:31 EDT 2003

Hello Ned,
A truly good explanation, and I am a bit puzzled by the figures given in
inches and not mm. Is KKK a US company from the start ?

What about telling the whole story and include the turbine sizing logic if
there are any?

I have a K27 3770 MXA 9.12 turbo from a S1 and plan on installing this on my
Sport Quattro together with a Motec system. Is the 9.12 refering to a
turbine housing number 9 and what is the " 12 " ?

Or is this information secret with the tuners ?

Best regards Joern, MTM RS

----- Original Message -----
From: "Ned Ritchie" <Q at IntendedAcceleration.com>
To: "'Mihnea Cotet'" <mik at info.fundp.ac.be>; "'Mark Strangways'"
<strangconst at rogers.com>
Cc: <s-car-list at audifans.com>
Sent: Wednesday, October 01, 2003 8:55 AM
Subject: RE: [s-cars] Triple K part numbers -- Ned's reply

> Those not technical can GOTO the next email message.
>
> Further clarification on 3K turbochargers
> Specification numbers below are different than part numbers.
>
> Examples:
> K04   2075 EACAA 4.82  1.8T upgrade has a 3K part number 5304 970 0015
> K04   2075 EAC   4.82  1.8T  230hp version for 1.8T
> NOTICE the inducer on these is a whopping 75%
> =====================
> K24   2672 GGC  6.12  the RS2 turbo.
>
> K24 refers to the turbine housing or HOT side
> Has NOTHING to do with the cold side.
> 2672 refers to the COMPRESSOR wheel
>    26 times 2.54 gives the exducer diameter in mm = 66mm
>      72 give the size of the inducer as 72 % of the exducer
> GGC  refers to the configuration
>   6.12 refers to the size of the turbine in the K24
> housing
>   6.11 different turbine for RS2
>   6.13 even more different for RS2
> ==================
> K26   2664 CA   6.95  the specifications for the 100/200/5000 turbo
>
> K26 turbine housing
>   2664 26 x 2.54 = 66mm is the same as the RS2 but inducer is 64% of
> that.
>      6.95 indicates a larger turbine wheel than the RS2
> ==========
> Here is one I like for most higher end upgrades
> K26   3072 GD   8.11
>
> And on my new urS4:
> K26   3472 HHB 10.91
> You can figure out the exducer and inducer on this baby.
>
> And then to stir the pot. . .
> K27.2 A three bolt mounting for Porsche type
>
> Ned
>
>
>
> -----Original Message-----
> From: s-car-list-admin at audifans.com
> [mailto:s-car-list-admin at audifans.com] On Behalf Of Mihnea Cotet
> Sent: Thursday, September 25, 2003 2:38 PM
> To: Mark Strangways
> Cc: s-car-list at audifans.com
> Subject: Re: [s-cars] Triple K part numbers
>
> Mark, the triple-K terminology can be described as follows:
>
> -53xx where xx is 24/26/27/28/29/32 and so on, relates to the bigger
> diameter of the compressor wheel in inches, a K24 is 2.4 inches if I'm
> not
> mistaken and so on.
>
> -970 or 988 is the middle group that is unrelated
>
> -xxyy where xx is the ratio between the bigger diameter of the
> compressor
> wheel (i.e. the part that lays flat agains the compressor's backing
> plate)
> and the smaller one (i.e. the diameter on the compressor inlet side). yy
> seems to be unrelated, possibly related to the turbine trim but I'm not
> sure so I won't speculate.
>
> Thus, a 5324 970 7000 is a K24 turbo where the compressor wheel has a
> 70%
> ratio.
> A 5324 970 (988 for most recent ones) 7200 is a K26 turbo (although the
> part number doesn't say it) from the Audi 80 avant RS2 where the
> compressor
> wheel has a ratio of 72%.
> 72% is the biggest ratio that's available from triple K BTW, which means
> you'll never get a K26 73xx or 74xx compressor for instance.
>
> The RS2 turbo is strange because its part number indicates it as being a
> K24 turbo, although almost all (if not all) parts inside are K26, BTDT
> and
> disassembled one myself recently.
>
> Thus, a K24 6080 has a 60% ratio compressor, IMO worse than a 7000
> (stock
> UrS4, UrS6, S2, 200q20v, Urq-20v, MC-2)
>
> For the K27 family for instance, the sport quattro K27 has a 6486
> compressor (I'm holding it in my hands) but some Porsches got a 70xx and
> 72xx compressor.
>
> This has been explained to me by one of the engineers working for
> triple-K
> warner's official importer in Belgium, he might be wrong, in which case
> I
> stand corrected, but I think he is right, I've already measured and did
> the
> math myself on a stock AAN K24, 200 10v MC-1 K26, RS2 K26 and SQ K27 and
> all of them were correct.
>
>
> HTH,
>
> Mihnea
>
> At 23:53 24/09/2003 -0400, you wrote:
> >Hi group..
> >
> >Does anyone really understand the KKK numbering system.
> >For instance a K26 is physically bigger than a k24 right,
> >But what is a 5324 970 7000 - our K24's
> >vs. 5324 970 7001 or 7200 for that matter.
> >going to a k24 with say a 6080 , this should be smaller than the 7000
> >correct ?
> >
> >I am just curious to try to compare turbos between manufacturers.
> >Trying to do my homework so to speak.
> >
> >Thanks,
> >
> >Mark S
> >
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