Project Rexige... Lotus S2, K24 Turbo + sequential project

[sl0wlane]

A year in the making so far, most parts ready to go in... bit more welding to do...

[Smitters]

Bookmarked! That pipework looks artful. And possibly a tad warm! Look forward to seeing this come together. The question is, would Turbo Yoda approve?

[sl0wlane]

We get closer





Quaife sequential box dropped to HPE on Saturday for a cosmetic spruce up (internals are looking all good) and Dan has my engine block and components "next in the queue"

[Butter Face]

Oooohhhhh. Very nice!!

[Beedub]

incredible!

[Turn7]

Bookmarked...

What are you expecting HP wise ? 300 ?

[Butter Face]

Turn7 said:

Bookmarked...

What are you expecting HP wise ? 300 ?

I'd say more like 500!

[sl0wlane]

Butter Face said:

I'd say more like 500!

Yep, around about, I'll be happy with 5**, I met a chap with a K24, exact same turbo in an aerodeck (I think)... 608bhp and starting to get on boost at 2.5k... that will be lovely if we can close to that.

[Evolved]

Lovely

[Butter Face]

sl0wlane said:

Butter Face said:

I'd say more like 500!

Yep, around about, I'll be happy with 5**, I met a chap with a K24, exact same turbo in an aerodeck (I think)... 608bhp and starting to get on boost at 2.5k... that will be lovely if we can close to that.

That's pretty epic. I'm eventually going to build a k24 for my Civic. I have a Rotrex Supercharger and getting 320bhp. 500+ is amazing.

[sl0wlane]

A bit of detail on the spec (so far):

Fully built and Darton lined K24 Block
K20 head - 3 angle seats, mild porting
Inconel exhaust valves, Clockwise motion "bee hive" springs
Clockwise motion "turbo" cams with adjustable exhaust pulley
CP 9.5:1 forged pistons and Clockwise motion forged rods - tool steel wrist pins
Water pump delete (BMW electric pump) - smaller alternator
Jenvey "Turbo" twin plenum / inlet manifold - 70mm J37 TB
ID1000 injectors, Clockwise billet rail
DW fuel pump and fuel regulator

Custom built Inconel equal length tubular manifold
Custom built roof mounted intercooler

Owen Developments ODGT3579HTA m-spec Turbo, Tial exhaust housing
Tial MVR 44mm wastegate
3.5" turbo back exhaust
Wastegate v-band to allow either through silencer or "screamer" option

Quaife 5 speed sequential with Quaife LSD ("race" ratios)

Quartermaster ceremetalic clutch
Clockwise lightweight flywheel

Efi Euro 4 ECU
HP Electronik PDM
Aim MXS dash

Comments and suggestions welcome

Edited by sl0wlane on Thursday 5th October 08:08

Edited by sl0wlane on Friday 6th October 18:47

[sl0wlane]

Silencer now on mount:


The projects namesake (my boy Rex), checking the driving position (by the time I finish this thing he will probably be able to drive it!):

[Mudgey]

Holy moly, that's going to end up greater than 500hp/ton ?

So why the decision to go Turbo and not a great big supercharger for example?

[sl0wlane]

Umm... I guess nothing more than having a turbo obsession and a taste for cars that are inherently flawed and hard to drive?

Aiming for ~850kg and 5##bhp... so yes, a bit more than 500bhp per metric ton.

[Mudgey]

Hah, it'll certainly keep you on your toes!!

Damn, that's gunna be something else to drive. Keep the pictures coming!

[TheDrBrian]

Are you not afraid you might of ruined it?

Nothing against the standard of work more that you've taken a car that has a nice balance of power, grip ,weight and you've massively skewed that triangle towards power.

[406highlander]

I would give OP the benefit of the doubt; given the standard of work so far, I seriously doubt he would finish the engine improvements and just say "All done!" without having considered upgrades to aerodynamics in order to make the car more manageable at speed..

[sl0wlane]

TheDrBrian said:

Are you not afraid you might of ruined it?

Nothing against the standard of work more that you've taken a car that has a nice balance of power, grip ,weight and you've massively skewed that triangle towards power.

Ruined? Hmmm... I would say it is "changed dramatically".. it's not really an Elise anymore, but I bought the car with this outcome in mind from the outset... so it will be what it will be... which will probably be quite scary

There are a few 111 based cars running this kind of power and more, not least of which is Ronin's RS211, which I have had the pleasure of riding around the canyons in (EPIC!)... Jamie Wilsons Time attack car... and a fair few more (not to mention the Hennessey venom GT which has over 1000bhp and still same chassis albeit extended).. the chassis can take a LOT more power than the 156bhp it left the factory with.

I have upgraded the other areas, and I probably will readdresses these again later once it's running... it has 4 pots, nitrons, spherical bearings, wider rubber etc.

The aero will of course be addressed and I have MY2010 Exige parts ready to fit (the car started out as a 2005 111S Rover engine Elise)... the roof will have to have quite a big scoop for the intercooler too... I'll deal with that bit once it's running and mapped.

Edited by sl0wlane on Thursday 5th October 11:33

Edited by sl0wlane on Thursday 5th October 11:35

Edited by sl0wlane on Thursday 5th October 11:38

[ShakeyJake188]

No such thing as too much power Nice to see it being turbo'd instead of the usual supercharger.
Some awesome parts on it

[sl0wlane]

Fabrication all done... next phase, build up engine, clean gearbox casing, make a loom... and map