500bhp lotus S1 Exige build...
Discussion
Engine is just under 10.5:1, on a 2.2ltr. It's a c38-91 geared to go flat out at 8250rpm. Sc pulley is a 95mm, so to be exact in the sc speed... 138 crank x 8000rpm x gearbox ratio 7.5, divided by sc pulley gives 87150 rpm to start with, sc can do 90k but depends what we find when we start mapping. If she will take a big more I can drop to. 90mm pulley and lower the rev limit a little.
Video of its second outing today at silverstone running around 520 bhp today http://youtu.be/31yZHSYwF3g
Absolutely love the flaming. You ought to get a rear facing camera and some fireproof body work!
Ok so now that we plan to take the car to Anglesey on Easter weekend I thinks its time to start project "get car ready in time"
Got another small list that we want to do before hand after our test day at silverstone. Part of this list is...sort the heat issue with the charge cooler, fit a bigger rear spoiler, make and fit a bigger front splitter, canards and sill extensions. Fit another new battery isolator (I'm fussy so want one I 100% trust) reprogram the dash so the gear indicator is correctly setup, oh and turn the power taps up a bit more
Few jobs done tonight,
3rd aero catch mounting bracket fabricated and fitted as the stock latch broke at silverstone
Put the cat back in as got an mot booked for Monday so I can get out and data log the charge cooler to see where the issue is
And started fitting all the thermocouples to the air and water system ready to datalog.
Will continue to update as we fix, replace and produce the new parts
Got another small list that we want to do before hand after our test day at silverstone. Part of this list is...sort the heat issue with the charge cooler, fit a bigger rear spoiler, make and fit a bigger front splitter, canards and sill extensions. Fit another new battery isolator (I'm fussy so want one I 100% trust) reprogram the dash so the gear indicator is correctly setup, oh and turn the power taps up a bit more
Few jobs done tonight,
3rd aero catch mounting bracket fabricated and fitted as the stock latch broke at silverstone
Put the cat back in as got an mot booked for Monday so I can get out and data log the charge cooler to see where the issue is
And started fitting all the thermocouples to the air and water system ready to datalog.
Will continue to update as we fix, replace and produce the new parts
small update tonight....Car is back in the workshop and the stripdown has begun to sort some of the new mods we want to do.
floor pans off and up on axelstands
arch liners out, front splitter off,
New rear wing is here. a quick size comparison..
Also managed to sit down tonight and draw up the proper wing mounting brackets
Made some mockup templates for the new spoiler brackets.. going to make them in 2 pieces so that the clam can be removed quite easily by leaving the main lower bracket boleted into the main chassis box.
shocks all removed and stripped down,
old softer springs and the harder ones we will be replacing them with
Had a bit of a poke around with the new charge cooler pre rads. all looks pretty straight forward to mount and run the pipework so will get into this at the weekend.
And finally we have a new BOV to go on, changing out the 40mm recirc forge supersize for one of there new 50mm atmospheric valves. this is mainly to cut down on noise as the recircs make a hell of a noise when your just blowing them off to atmosphere!
floor pans off and up on axelstands
arch liners out, front splitter off,
New rear wing is here. a quick size comparison..
Also managed to sit down tonight and draw up the proper wing mounting brackets
Made some mockup templates for the new spoiler brackets.. going to make them in 2 pieces so that the clam can be removed quite easily by leaving the main lower bracket boleted into the main chassis box.
shocks all removed and stripped down,
old softer springs and the harder ones we will be replacing them with
Had a bit of a poke around with the new charge cooler pre rads. all looks pretty straight forward to mount and run the pipework so will get into this at the weekend.
And finally we have a new BOV to go on, changing out the 40mm recirc forge supersize for one of there new 50mm atmospheric valves. this is mainly to cut down on noise as the recircs make a hell of a noise when your just blowing them off to atmosphere!
Right then......quite a lot achieved today really.
New front splitter has been made..
Had to stick it in the old bridgeport to machine the back edge down a little so the thicker sheet would slide over the rivnuts in the chassis.
We mocked up the wing brackets with some 2mm sheet. I got told this looked stupid and I needed to change it before something got thrown at me. lol,
So I made some mods and dropped it 60mm and moved it forward 50 just to make it a little more sensible for the road. Then we hit the cnc
Much better
Have put a 4mm rad on the outside edges to to help the air get around the brackets a bit as they are 10mm thick. Also need to glass up the old slots in the clam from the old wing, will do this when the clam comes back off next week.
Then marc started making a mess by cutting out the new vent slots in the front wings..
I will bond the mesh into these next week
Also today lots of things done that you cant see. New battery isolator wired in, oil and filter change, some shims needed changing on the suspension, split boot on a trackrod end etc etc,
Then last job for the day was to remove the re-circ valve from the charge cooler and weld on the new 50mm external Forge BOV.
New front splitter has been made..
Had to stick it in the old bridgeport to machine the back edge down a little so the thicker sheet would slide over the rivnuts in the chassis.
We mocked up the wing brackets with some 2mm sheet. I got told this looked stupid and I needed to change it before something got thrown at me. lol,
So I made some mods and dropped it 60mm and moved it forward 50 just to make it a little more sensible for the road. Then we hit the cnc
Much better
Have put a 4mm rad on the outside edges to to help the air get around the brackets a bit as they are 10mm thick. Also need to glass up the old slots in the clam from the old wing, will do this when the clam comes back off next week.
Then marc started making a mess by cutting out the new vent slots in the front wings..
I will bond the mesh into these next week
Also today lots of things done that you cant see. New battery isolator wired in, oil and filter change, some shims needed changing on the suspension, split boot on a trackrod end etc etc,
Then last job for the day was to remove the re-circ valve from the charge cooler and weld on the new 50mm external Forge BOV.
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