Am interested, but only if funds permit and someone else helps out with R&D costs, my car is off the road till March and I might be pulling the engine (Stronger pistons and liners) �1500 for the charger I can find and tuning is easy 
Ade/N1VES - if we can get the required ancillary parts fabricated then there’s no need to fork out the small fortune that SSC charge. Bearing in mind the 'charger isnt that expensive and it fits (I know I’ve seen one fitted to an Exige S) how hard can it be
So whats the next step? I have the charger (and the car) just need a tuner/garage that fancies developing the kit (fabricating the brackets, etc). Should be a good, straight forward upgrade for Exige S owners once developed… [/quote]
I dont see there been that much developement required (assuming sincs are happy mapping the car). The harrop is a straight swap with the M62, however the MP62 has a slightly different bolt pattern. What would be required is either a new manifold designed to accept the charger, or an adaptor plate to alter the bolt pattern. I can;t imagine there being much else - Then its just a choice of pulley / belt size to get the correct boost.
Does anyone know if any of the aftermarket charger kits use the M62 instead of the MP62 found in the S?
[quote=-Neil-]Is this suitably sized for our size of engines? IIRC these are fitted to Audi’s V6 powered S4?
Neil. [/quote]
Depends on a few variables, but the pulley size dicates a lot of this. The Harrop is not only slightly larger, but also more efficient - At the moment, we are reaching the limits with the smaller pulleys on the the MP62. Maxing the harrop with a small pulley on our small 1.8 engines may well be too much, but we could just match the boost levels we currently run on the MP62 and end up with a charger that runs cooler…however, some of us do want to push this further :whistle:
Something I found out the other day…Evora S uses the Harrop charger!
Hi,
Yes, the Evora S uses the TVS- non-intercooled.
I started with the TVS with the Lotus first and did this with Harrop’s head unit. We used the BWR/Greddy manifold (not blitz) and then adapted it to the TVS1320.
We recently released a complete charge cooled TVS 1320 system for the 2ZZ. It’s very compact and OE looking. We started with our own casting and a clean sheet of paper.
While we’re friends with SSC, and wanted our TVS kits to nicely overlap, we didn’t share our plans with each other until we both had gone to the foundry with our molds. This means that they ended up using a different TVS housing than we did, so the head units are not compatible with our respective systems. There are so many of the legacy BOE TVS kits out there, that our hands were tied and needed to use the original housing design we started all this with…
The TVS offers many benefits over the M62 including lower charge temps for a given amount of boost and less parasitic drag. It does this while continuing to offer instant boost- just as all positive displacment blowers do… The TVS even offers benefits over the twin screw compressors such as lower BSFC, and larger efficiency islands. All in all, it’s a very nice package.
We do have the ability to flash the stock ECU in Europe via our partner in Germany if anyone is interested in the kit we offer with the TVS (info found at www.boefabrication.com).
Thanks for your time,
Phil