Sprintex Supercharged K20 Honda Elise

[juk]

Lads,

I'm putting a locally made supercharger good for 500hp, though target is only 400hp onto a JRSC manifold with an intercooler into a K20 powered Lotus Elise.

http://i39.tinypic.com/x4gopy.png

The supercharger is a Sprintex S5-335 made in Malaga WA by Automotive Technology Group. It's a twin screw compressor with 1.8:1 internal compression and let me tell you it's a sexy beast. These are some of the most efficient superchargers in the world, i don't know all the specs, but they're shit hot i'm told. So nice cool charge temps, less stolen power from the crankshaft and lesser inter cooling requirements. I went out there to pick it up and got a bit of a factory tour whilst they assembled the snout and pulley that i required. It was a hive of activity, they were busy preparing for the SEMA show in the states and had heaps on the bench ready to go to the states.

So i've got the fuel system sorted, intercooler pump and wiring and radiator sorted. At the same time i'm putting in a 4.05 final drive and a TSX 6th gear, so top speed should be 330kph, and the car only weighs 750kg. If anyone wants the JDM diff and the 4.7 FD they'll be up for sale along with a JDM EP3 CTR aircon compressor and the JDM inlet manifold. But you know only if i gots enough points to post in the for sale section. You know what to do.

The Zorst is being zirconia coated by the chaps at zircotec because she gets a little warm and it's all tucked up under the boot and this is a lotus, not a jiffy van, so i don't have a need for a pie warmer.

The main holdup at the moment is getting stuff out of the states, cos everyone is at SEMA and i'm trying to make up an adapter plate with an intercooler sandwiched within. Due to the extremely short residence times and the small volume of the intercooler, i've decided to plumb the air out from under the supercharger and through a proper sized intercooler, then back in.

http://i40.tinypic.com/28m1n3t.png

So, found the right machine shop and i'm in business, progress photo taken today:

http://i39.tinypic.com/14wglts.jpg

http://i42.tinypic.com/2yyqtev.png

http://i40.tinypic.com/2h51aug.png

http://i40.tinypic.com/211wbk5.png

http://i41.tinypic.com/9a45xh.png

http://i40.tinypic.com/24yy2ko.png

http://i43.tinypic.com/2r6fkg1.png

http://i42.tinypic.com/34t93kl.png

Anyway, nuff said

[Bludger]

needs pictures.

[u mad?]

As above. this isn't the one I've seen on jdmst is it?

[mocchi]

what calls the need for laser cut?
surely cnc would suffice?

[trism]

Laser will result in better cuts when cutting out of plates.

[EKVTIR-T]

Laser will result in better cuts when cutting out of plates.

I'd have to disagree there.If you've ever seen laser cut plate it can often have a textured edge,it looks almost like a press cut.
Depending on the application they have to be refinished
Milled cnc cuts are much nicer and square edged

[xenonkuraz]

Ah, the formidable k20 lotus.

What a trend hey...

to think that the k series was invented by rover

[marquee]

Inlet manifold = rbc yeah

[juk]

Nah, the JDM EP3 Type R, on the right in the picture here:

http://type-r-owners.co.uk/forums/showthread.php?62438-JDM-inlet-manifold-Vs-RBC-inlet.

The one on the left is the RBC

Has anyone actually dyno'd the difference, cos the JDM has machined trumpets internally that flow pretty damn good.

Mine is the same as this one:

http://www.ebay.com.au/itm/OEM-HONDA-PRC-DC5R-K20A-JDM-intake-manifold-DC5-EP3-JDM-/370436191537

[shmivic]

Have a look on MercRacing website, Jose is the man who provided me with my Aftercooler kit for my K24.

[IEVAQ8]

more info of ur whole project would be awsome

[shmivic]

who, me or O.P?

mines crap, want to see more lotus goodness

[juk]

Now with more pictures

[Benson]

Nice Project

Any particular reason to use a root type charger over the centrifuge type chargers?

[juk]

It's not a roots blower. It's a twin screw compressor. It has internal compression unlike a roots which only moves air.

The centrifugal blowers need to get wound up like a turbo and their efficiency changes markedly with speed, therefore they suffer from lack of torque down low.

[Benson]

Ok cool,

2.4l bottom end will help that low end torque!

In for some results

[juk]

bump for latest pics

[juk]

Bit of an update, got everything in and plumbed up, the intercooler was massive and worked sweet, but i had some issues with the hoses getting sucked in and would have been forced to either line them or make them out of aluminium. Given the tight spaces and that the throttle response was diminished with the large air volume. I probably should have used 2.5 inch everything rather than 3 inch everything.

Well anyway, what i'm doing is having a laminova style intercooler cut into a billet of aluminium and that's going under the supercharger and above the inlet manifold. Plenty of height to play with in the lotus.

This should sort all my issues.

anyway, pics here:
http://i39.tinypic.com/md09jo.jpg

[Lukezen27]

Wow

Looking good man!

Can't wait for some dyno and lap times

[JPR28610]

love it!

[juk]

297hp at the wheels in 42 degrees with a bit of a boost leak and an undersized intercooler rad.

Mad props to Joel and William and the guys from tokyo motorsports for all their help and patience today.

[dougie_504]

Damn that's huge. Nice work bro must be an absolute animal to drive. How do you go putting the power down?

[Bludger]

Damn that's huge. Nice work bro must be an absolute animal to drive. How do you go putting the power down?
through the rear wheels.

[EKVTIR-T]

Keen for some seat time in this beast.

[wuism]

297hp at the wheels in 42 degrees with a bit of a boost leak and an undersized intercooler rad.

Mad props to Joel and William and the guys from tokyo motorsports for all their help and patience today.

No worries Craig..... glad we got better power at the end!!!

[juk]

http://i44.tinypic.com/bevbb8.png

plenty of torque down the bottom, the heat tapered off the top end. I'll fix the intercooler radiator and we should be kicking arse.

[spaztikcamel]

so why no water injection?

[juk]

We get intercooler working properly first, then water injection, then liquid LPG injection, then NOS, then split system electric super-turbo........

[Stevil]

Hey Juk I was at Wakefield yesterday and I noticed K20 powered white Lotus went up in flames ! Did you know this car ??

[juk]

No i don't know the car. I'll ask around.

[Stevil]

This was the offender !

http://madmick3006.com/ahngallery/upload/files/2012-06/99ae8504.jpg

[nuk1ear]

never considered a 2GR engine? They make a good 300whp NA with a decent exhaust and ECU. Plus a pretty easy fit into the lotus body. Either way very cool build. How much hassle was it with the gearbox/engine mounts?

[juk]

never considered a 2GR engine? They make a good 300whp NA with a decent exhaust and ECU. Plus a pretty easy fit into the lotus body. Either way very cool build. How much hassle was it with the gearbox/engine mounts?

Yeah nah. You have to cut the crossmember to fit the v6 in. and i reckon you'd have to give up some of the boot space.

Engine mounts were easy as:
http://www.stark-automotive.co.uk/eliser/

[dc292177917]

nice work mate i hv a frd putting sprintex charger in his GE jazz
btw any photos of your whole car?

[BG-33P]

dc292177917: Clear your inbox dude, just tried to PM you.

[xenonkuraz]

nice work mate i hv a frd putting sprintex charger in his GE jazz
btw any photos of your whole car?

damn would love to see this

[f20cp510]

nice setup could the same be used on a F20c? is the inlet flange the same etc? which parts are custom machined and which are of the shelf?

[juk]

nice setup could the same be used on a F20c? is the inlet flange the same etc? which parts are custom machined and which are of the shelf?

It's all totally different now. It has a blow down intercooler assembly straight into the JRSC manifold. It's all custom. The previous incarnation had better cooling but i struggled with throttle response, running on and sorting out the pipework. That was mostly custom too, the only thing that wasn't custom was the off the shelf intercooler.