Recently I have been doing some research regarding the possibility of fitting a V8 engine into a S2 / 2ZZ chassis . I have some down time from my current build as I wait for a loom to be completed and its always good to plan ahead.
Appreciate that this subject has been discussed at length in these forums but I think that i may have come up with a solution ..albeit only for track use.
I have long been an admirer of the Radical RXC cars in particular the V8 version.
Radical Performace Engines - race-winning engines
and have often thought that this would be an ideal engine to fit into the Lotus chassis.
I enquired with RPE with regards to price , but that turned out to be an eye watering number when the conversion from UK pounds to NZ $ was calculated !!
It was with some surprise that I discovered that a NZ company was also producing a V8 based on a motorcycle engine.
Main difference was that they used the Kawasaki ZX engine for a base . [RPE use Suzuki Hayabusa] turns out the engine was initially developed for Midget dirt track oval racing in Australasia
They have been subsequently installed into a number of other track cars the most notable been a Juno conversion which has gained several track records.
Synergy V8 Powered Juno Sportscar Video - Blog -
So I started to look at the possibility of making the instal happen and what my list of specs / parameters would be
- No Increase in weight
- Be able to fit the S2 chassis with no Mods to the main chassis but acceptable to modify the rear sub frame.
- Wheelbase to remain unchanged .
- Wishbones pickup points etc unchanged
- Minimal changes to Bodywork acceptable [ initial thoughts were to use a 2-11 donor, but have changed to Exige as require full body to meet local regs ]
- Be able to produce around 400-450 whp reliably
- Normally Aspirated
- Inline engine install preferred but Traverse acceptable.
- Sequential gearbox
- Dry sumped
Based on the above I have now progressed to the stage where I have ruled out an inline instal . The engine / Gearbox [Hollinger MFT] is approx 150 mm to long .. engine would need to go 150 mm into fuel tank / bulkhead . Doable but lots of work.
Initially not that confident that a Transverse setup would work but after getting some rough CAD drawings done , using the EP sequential box it appears that the Synergy V8 is a reasonably easy fit. The EP box is situated using the mounts that would normally be used for the Honda K20 engine so still have the ability to drop lower if required . The drawing allows for the Engine / transmission plate width and fitment of a racing clutch . Driveshafts are well placed and almost straight and level.
Currently working on the exhaust pipe routing drawing and looking to run these under the engine . Looks like we will have plenty of room for the front bank as enough clearance to fuel tank and bulkhead although plenty of heat shielding will be required. More airflow will be required to this area also.
A quick calculation [ based on my K20 Build with the same box] shows expected weight to be around 625-650 kg [1377 to 1433 pounds] No driver ... keep in mind this is a fully stripped out race car.
Synergy offers a 3Litre - 500Hp @ 10,500 rpm engine [say 425 WHP] so it would be an exciting drive !
I have attached a couple of pictures and encourage others to give there opinion good or bad , and yes I realise the expense involved so lets leave that out of the discussion.. but would like to use this as a bit of a think tank , to possibly look at what other issues , problems may arise.
All input appreciated.
p.s ... I have a great 2-11 for sale if anyone is interested ?