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

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

Author
Discussion

coopedup

3,741 posts

110 months

Monday 13th November 2017
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This will surely be epic to drive!!

Butter Face

25,475 posts

131 months

Monday 13th November 2017
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That looks mental. Great work.

sl0wlane

Original Poster:

617 posts

164 months

Saturday 24th March 2018
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Well... progresss has been slower than I would like... but the engine and box I am assured will be ready by the end of this month...

New longerons, more gold sticky back plastic, new subframe... Aim dash mounted, fire systems, new battery cable and battery moved to the front, heater deleted... a fair amount done... just need an engine, gearbox, plumbing, loom and mapping now (just)...


sl0wlane

Original Poster:

617 posts

164 months

Sunday 16th September 2018
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Full spec:

K24 block
K24 crank
Darton MID sleeves (block is 99x87)
K20 oil pump and balance shaft delete
Clockwise motion sump baffle
K20a2 head
3 angle valve seats
Inconel exhaust valves, stainless inlet valves (exhaust valves slightly larger)
Exhaust ports have a light flow job
BC stage 2 turbo cams
Adjustable exhaust pulley
Saenz rods
CP 9.5:1 pistons
All componants fully balanced

Jenvey “turbo” inlet manifold 70mm throttle
Honda J37 electronic throttlebody
ID1000 injectors
DW320 Pump
DWFPR1000 fuel pressure regulator
UK 99RON fuel (93 USA MON)

Equal length Inconel exhaust manifold, 23” primaries, with wastegate priority
44mm TiAL MVR wastegate
Owen Developments ODGT3579HTA m-spec turbo, TiAL v-band exhaust housing
MAC 4-port boost solenoid
Roof mounted (because mid-engine) custom air-air intercooler
3.5” turbo back exhaust - no cat

Emtron KV8 ECU with loads of sensors:
Fuel pressure
Fuel temperature
Exhaust manifold pressure
Exhaust manifold temperature
Wideband Bosch knock
Wideband LSU4.9 lambda
Pre and post throttle pressure sensors
Etc etc

Anyone want to guess what power it might make?

sc0tt

17,428 posts

172 months

Sunday 16th September 2018
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608

Butter Face

25,475 posts

131 months

Tuesday 18th September 2018
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That looks awesome, 500ish?

ManOpener

7,162 posts

140 months

Tuesday 18th September 2018
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650 at the crank, maybe 570 at the wheels?

trails

1,281 posts

120 months

Tuesday 18th September 2018
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GT35 based blower, 2.4 and 1000cc injectors...got to be capable of 600/650...so depends who is mapping it I guess laugh

Good luck smile

sl0wlane

Original Poster:

617 posts

164 months

Wednesday 19th September 2018
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Getting closer... almost time to fire it up for the first time, both exciting and totally nerve racking.

I’m almost glad I’m in another country and cant be near it for first start up, brand new never been run engine adds an element of (wallet) fear to the mix.

Yep... I think the numbers here are about right, I’ll be gutted if if doesn’t make 500+ at the wheels, power graph to follow in the not too distant future (I hope!)

sl0wlane

Original Poster:

617 posts

164 months

Monday 27th January 2020
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Many things have happened since I last updated this thread.

Engine is running, had a bit of fun and games with the gearbox, but mostly just learning how to set them up really...

https://youtu.be/uCmArHv8I8E

All now working.





I have a list longer than my arm of stuff to finish configuring on the dash/wheel/PDM/ECU...

Fonzey

1,612 posts

98 months

Monday 27th January 2020
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Very cool, been following a little closer on SELOC. Looking forward to seeing this finished, or at least - finished enough for the road biggrin

Mgd_uk

337 posts

75 months

Monday 27th January 2020
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Fantastic, can’t wait to see this finished.

frayz

2,407 posts

130 months

Monday 27th January 2020
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That will piss 650bhp all day on that turbo with some decent fuel. Good luck.

sl0wlane

Original Poster:

617 posts

164 months

Wednesday 19th February 2020
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Mgd_uk

337 posts

75 months

Thursday 20th February 2020
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What kind of power is it making then? smile

sl0wlane

Original Poster:

617 posts

164 months

Thursday 20th February 2020
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Only managed 7k @ 18psi and a very conservative map so far, needs another day on the rollers to get the headline result... So has only done 420 at the wheels so far.