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UK 3.2 Turbo hits the road

 
Old 12-21-2006, 03:56 PM
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Diver944
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Default UK 3.2 Turbo hits the road

Well as Rolex keeps pestering me here's the first pics and details on Rennlist concerning my new 3.2 litre Turbo. It's been a long and rocky road (17 months long) all triggered when my old airbox lost a captive nut in to the turbocharger and scored cylinder #1

At the time we couldn't source any 100.5mm pistons for a standard rebuild, or a 2.8 stroker so after a few months discussion with Jon Mitchell at www.9xx.co.uk here in the UK I finally decided to get a 104mm block from a 2.7 sleeve it and bore it out to a 3.2 litre (I don't have the full build sheet yet but I think it's actually 3245 cc so some would call it a 3.3)

The details are:

3.2 Nikasil coated sleeved block:
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2.7 big valved head:
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JE Pistons, Carillo Rods, S2 crank, 8:1 compression:
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Hybrid ball race Turbo. KKK 10 hotside, ported Garret cold side 4" inlet:
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Here it is partially installed:
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And here is the finished article:
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And one happy owner (yes the bonnet struts have degraded )
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Last edited by Diver944; 05-21-2007 at 05:39 PM.
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Old 12-21-2006, 03:59 PM
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hot-J
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That is insane.... post driving impressions, and #'s ASAP!!!
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Old 12-21-2006, 04:01 PM
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xsboost90
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hey your wheel is on the wrong side- nice motor!!! Let us know how she runs..
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Old 12-21-2006, 04:08 PM
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ian
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I am sure that most would disagree with me, but the most impressive part of this 3.2L, to me, is the stock appearance you have kept in the engine bay. It must be the largest displacement stealth 944 turbo I have ever seen. It is a very impressive build up you have gone through, now get her on the road and let us know how she drives......
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Old 12-21-2006, 04:10 PM
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evil 944t
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Great looking car! Enjoy.
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Old 12-21-2006, 04:12 PM
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Diver944
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You'll notice I'm still running the AFM and currently have a MBC for the engine break in period. A Vitesse MAF will be going in there in the New Year

The engine actually ran in within 200miles and has not used a drop since then - she's currently up to 1900 miles and Jon has allowed me to steadily increase boost and RPM every few hundred miles as long as I report back the AFR using my Wideband Commander. I'm currently at 15 psi with and now have full revs and she hits 12:1 on boost and happily lights up the rear wheels in the first four gears on the cold roads we have just now

Off boost she feels sooooo smooth and so much more responsive than my wifes 172k mile S2. Ok it's a brand new engine with new mounts. new clutch, new everything and has slighly more cubes but with a compression ratio of 8:1 I wasn't expecting that.

The ball race turbo just wants to spin ALL the time. The first 1000 miles with no boost was just so hard because you just have to touch the throttle and boost is there IMMEDIATELY. When I had a 10psi and 4krpm limit it would hit 10psi by only 2400rpm. I'm currently at 17psi and it hits that at 3200rpm and feels just FANTASTIC

All of this is with some base chips that were not designed for a 3.2 but all along the AFR has been safe. This weekend I plan to refit my Greddy EBC then next week I will get a base line Dyno run at 18psi so I have something to compare when I get the Vitesse MAF installed.

I don't plan running high boost, this car is a street/track car that myself and my wife drive and I want it to be as user friendly as possible but with masses of low down useable torque and as little lag as possible. I don't imagine I will run higher than 20psi though Jon has specced and built the engine to be able to physivcally withstand 32psi all day long (as long as the fueling were able to match it)
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Old 12-21-2006, 04:15 PM
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Diver944
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I forgot to mention I have a TiAL 46mm wastegate and a testpipe under there. I have plans for a full 3" system at some point but it must be quiet, our circuits over here have very strict noise limits and I want to drive this thing, not get sent home for being too loud
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Old 12-21-2006, 04:16 PM
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Wow..... wow.... some slight mods will make your car a monster... Thanks for sharing!
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Old 12-21-2006, 04:24 PM
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Thom
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This a VERY nice hybrid turbo - how much of a hassle is it to adapt a KKK hotside (with circular intake) to a Garrett cold side ?

I have a GT3037S and that square intake bothers me as I wish to retain as much as possible of the stock exhaust plumbing.

Anyway, congrats on the engine. Wishing you as many happy miles as possible !
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Old 12-21-2006, 04:34 PM
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Josh B
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Wow - very nice....don't mean to be rude but if one where contemplating a project like that what would be a budget number?
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Old 12-21-2006, 04:34 PM
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toddk911
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Coated & sleeved block???? Good for 30psi???????? And that turbo and #10 hotside should be bale to handle it just fine.

With the 3.2 (3.3) displacement, when do you see 1 BAR of boost by with that big turbo???
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Old 12-21-2006, 04:41 PM
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You are my HERO! Seriously.
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Old 12-21-2006, 05:48 PM
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Nice to hear its all going well Paul, mine its a bit behind yours as I just havent had time to run it in and set up the Motec yet. Mine still feels a bit agricultural and have a few teething problems to sort but hopefully I wont be far beind. For those that dont know my 3.0 and Pauls 3.2 were done at the same time by the same guys.
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Old 12-21-2006, 06:08 PM
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I was lucky Nick. Being self employed I just stopped booking in customers in the afternoons and took my car out everyday clocking up a 100 miles or so of varying speeds to get her run in as soon as possible

It's interesting how we have similar engines built by the same guys but the end result will be by two different methods. Your's using a very up to date standalone Motec system, mine with a 20 year old Motronic (initially)

Either way, the UK is going to see some pretty special 951/968's in 2007 as I know that Jon has more in the pipeline
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Old 12-21-2006, 06:18 PM
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Thats a very nice build. Great job!!! That should be very enjoyable for a long, long time.
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