K24 7400 Hybrid Turbo & K24 7000 Componants.

[K Simmonds]

I'm in the process of clearing all the stuff off my workbenches so I can get on with my MK2 Golf GTI restoration and it makes sense to list things I'm never going to require for sale as I go along. I have quite a hoard of KKK turbo componants as I went through a phase some years ago of building turbos. In particular converting Volvo K24 7400 turbochargers for use on five cylinder Audi's with external wastegates, so S2's, URS4/6's as well as all the various 10V turbo engines.

This was quite a popular hybrid turbo a few years ago and I sold a few of them, they're very close to an RS2 K24 7200 but not quite capable of same outright power, 360bhp is what they top out at with RS2 injectors or Bosch green giants, though 350bhp is a more realistic and safe output.

The turbo conversion involves sourcing a complete Volvo K24 7400 as base unit, fit a Porsche 944 #6 exhaust turbine housing, though these are now getting hard to source for a reasonable price. The coldside housing has the internal diverter valve removed and blanked off and there's an external lip on the housing exit which needs removing so an S2 etc hose fits nicely.

The center sections are the same so the oil and water hoses are a direct fit and once all the other work is done they bolt straight up to an Audi manifold and downpipe. However, the compressor inlet is a bit larger so one either has carefully stretch a stock MAF hose or use an aftermarket silcone one. I do have one 3B MAF hose already adapated to fit which I could inculde with the turbo, a 3B hose will also fit ABY's and AAN's etc with very minor work.

Anyway, after having a sort out I have enough parts left to put together one last K24 7400 hybrid. A crack free Porsche #6 turbine housing, a complete K24 7400 coldside, a decent centre section and a brand new turbine shaft and compressor wheel. So all the the componants required to put together one final K24 7400 hybrid, it would however require blancing and a genral check over by a decent turbo rebuild company of the buyers choice.

So I thought I'd see if anyone on here is interesed in it before I list all my K24 7400 parts as a job lot on eBay. £250, inluding delivery to mainland UK address.

Crack free stock S2 ect K24 7000 exhaust turbine housing. £50 posted.

A complete undamaged K24 7000 coldside, housing, back plate and wheel. £50 posted.

I've also got couple of complete Porsche 944 coldsides left over. £50 posted each.

I'm going to media blast all the housings at some point over the weekend so will take photos after that's done.

I'm also prepaired to send items anywhere in the world with a couple of exceptions. If your interested please ask for a quote, though please note buyers will be potentially liable to import charges.

[psiconauta911]

Hi, first dibs on the K24 7400 Hybrid.

[K Simmonds]

Hi, first dibs on the K24 7400 Hybrid.

No problem, will PM you some pics once I have it ready to assemble.

[K Simmonds]

I'm waiting for a dry day to get the sandblasting cabinet outside, I won't use it inside my workshop as I don't like the mess it makes...

[K Simmonds]

image_89073.jpg image_89074.jpg



Found all the bits, just need to sandblast the housings, got a couple of decent shafts and compressor wheels. Will probably assemble with the used items as they're genuine KKK and in great condition.

Along with an original Nothelle spec compressor wheel and back plate that I forgot I still had. Came off my 300bhp Nothelle 3B, got a K26 compressor housing to go with it, but it needs machining out. £60 for that lot.... Back plate, comp wheel and housing...

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[K Simmonds]

Nice tidy K24 7000 Turbine housing.

[K Simmonds]

And a new K27 compressor wheel. I forgot the measurements off the top of my head but it's along the lines of 55mm/80mm. Will check and add to the thread.


£25 Posted.

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[K Simmonds]

I've just picked up an RS2 turbo with a high quailty billet wheel which fit's the stock housing and I'm extreamly impressed with the concept... It's a more modern 6 + 6 design and has considerably more surface area.

I've had a look and I can get a wheel made by the same company for the K24 7400, they're the thick end of £100 but well worth it IMO, would probably make the K24 7400 a 380bhp turbo with super fast spool. I could also get an aftermarket turbine wheel and shaft which would further update it, this would again be around £100.

K26 coldside sold. I have another couple though.

[K Simmonds]

I've just purchased a brand new K24 7400 CHRA with a billet wheel fitted, it's British made not one of the cheap ones from China.

So the K24 7400 will come ready to fit and be a 380bhp turbo, if you bring the car for me to fit it it'll have a years warrenty.

It's now £500 including a MAF boot. Fitting will cost £100.

[K Simmonds]

Pictures of new core and wastegate plug. Billet wheel with 10% extra surface area and modern design ballanced by Turbo Technics.


image_89247.jpg image_89248.jpg image_89249.jpg image_89250.jpg image_89251.jpg

[K Simmonds]

Bump this old thread..

I still have the billet wheel K24 7400 available for £500 delivered to a UK address though am happy to send it pretty much anywhere except Belgium, though buyers should note they're responsible for any import fee's/taxes.

As I mentioned I if the buyer comes to me I will fit it for £100 including all new gasket's and nut's, even if it takes me a day, though if nothings been badly mangled or mega corroded it should only take four hours tops... I was so excited when I got my first K24 7200 I managed to get it attached to my S2 on my hours lunch break, though all the fixings were brand new and I had a custom 3" down pipe that made access very straight forward.

I like to change the oil and filter when fitting a fresh turbo, unless it's very new fully synthetic oil of a premium brand, preferably something like Fuch's Titan 10W 50 which is my choice of oil for anything turbocharged. If I fit it l'll offer a years warrenty on the turbo so I can ensure it's installed correctly and primed properly before it's first start.

Still have the K24 housings. £50 each posted.

I have one of the larger Porsche 944 turbo (250bhp) cold-side's in excellent condition, back-plate, wheel and compressor housing. £100 ono posted

Complete Porsche 944 turbo regular cold-side. £50 posted.

I also have an interesting billet wheel RS2 K24 7200/K26 hybrid, freshly rebuilt with paperwork. £600 for this one and again I'll fit for £100. Will be starting a new thread for this turbo soon, I was going to keep it as a spare for my RS2 but now have the parts to build another so don't mind parting with it. Please PM me for more details and photo's if you're interested..

[K Simmonds]

The billet wheel K24 7400 is now being held for the member who contacted me first, I'm not in a hurry to shift it, plus the potential buyer has many questions regarding software as well as hardware.

Which is fair enough as it's going to need a custom remap to function to it's full potential and that's not cheap by any means...

The stock #6 K26 turbine housing is no longer available.

I have a brand new genuine KKK turbine/shaft assembly for a K24 7400 as well as a good used one, both have good damage free stock comp wheels. I'd let them go for £70/£50 respectively, though if they don't sell I'll probably end up using them to make hybrids.

The RS2 hybrid turbo is now officially for sale, will start a thread with details and photo's tomorrow. That is £650 firm including Parcelforce tracked 48 delivery, if you wanted to build one the same from scratch you'd be looking at the thick end of a grand so I consider that to be a pretty fair price.

Now.. I have another pretty special turbo in the works, I've gotten my hands on a mint #8 Porsche 944 K26 turbine housing and have two choices for coldsides, RS2 or a large K27 set up that was on a Nissan Skyline.

Not sure what to do yet... The RS2 comp housing will need extensive machine work to get a suitable billet wheel to fit and I'm a bit rusty using the lathe at work, though if make a custom cutting tool and practice on a scrap housing I'm sure could get it set up. This will be low 400's in horse power but with a lot more top end than a stock K24 7200. Again this will be £800 firm including delivery, the #8 turbine housing is worth £300 alone and a billet wheel is another £100.

My other option would simply be a nice K26/7 hybrid, this will be a 450+ BHP turbo with the right injectors and a custom map. I'd want £700 including delivery for this one.

More details and photo's soon.

[K Simmonds]

K24 7400 is now sold.

I do however have nearly all the parts to build another, I just need another Vovlo compressor housing so am scanning eBay for one, if anyone reading this happens to have one spare please drop me a PM

[K Simmonds]

Bumping this again. I still have the billet comp wheel K24 7400 for sale as well as other turbo stuff, I have all sorts of K24/6 parts spare, please ask if your're after anything.

The buyer discovered their car already has a full Nothelle set up, turbo, software the lot, which is very rare these days. So he dropped out of the sale partly on on my advice as the Nothelle turbo can be pushed harder than their software allows for.

Anyway, I'll do the K24 7400 hybrid with a brand new core and comp wheel, ready to bolt on for £400 ono plus delivery.

I'll also post worldwide with a couple of exceptions, just ask for a quote, the USA and Canada are no problem, Europe vary's a lot from country to country...

However, I will not send anything to Belgium, Haiti or Russia.

[K Simmonds]

K24 7400 provisionally sold, waiting for the member interested to get back to me, I always operate on first come first served basis and have a couple of buyers in line.

I have the parts to build a clone of the Nothelle N300 turbo in stock if anyone is interested in such a unit, if I was to use an aftermarket billet compressor wheel and an upgrade bearing kit it would be good for 1.8bar and well over 350bhp. It would actually be a slight improvement on the Nothelle unit as it'll use the lighter weight K24 6mm Turbine shaft as opposed to the 10mm K26 shaft.