Last 111, First Street Legal K20 Swap? (Part 1)
Back in February of 2020, our longtime Lotus customer reached out about potentially building an Elise from the ground up. The idea was to build a car to his exact specs, a reimagined Lotus Elise. The plan was to buy a brand new tub chassis from Lotus and hand-pick, or fabricate, custom parts for one goal: his perfect “streetable” track day car. Most of the drivetrain and miscellaneous bits would be taken from his current 2011 Elise.
Trackspec's Exige S240 Project: Part 10, K24 Swap (3)
In part two of the K24 swap, we were left waiting for the header to arrive. We ordered a Hytech 4-2-1 header specifically made for this swap, which took a little over a month to get, but was well worth the wait! It fit perfectly. Other than trimming the J-pipe to length it needs no modification to fit any muffler designed for this chassis. Once fitted, all we had to do was make an extension harness for the wideband o2 sensor.
Trackspec's Exige S240 Project: Part 10, K24 Swap (2)
When we left off in part one of the K24 swap, we had the engine in the car and started getting things connected. Although it seemed like it was close to being done, there was quite a bit left to do. We decided to keep the factory dual oil coolers. This may change in the future, but we wanted to make sure the temps were stable even on extremely hot days. Moving along on the track is one thing, but following closely behind another car in “dirty air” and it can get hot pretty quickly. Because these cars are known to over cool engine oil, we installed a thermostatic sandwich plate with a 200F thermostat to help maintain proper temps.
Trackspec's Exige S240 Project: Part 10, K24 Swap (1)
If you grew up in the 90s and were into cars, then you’ve heard of the Honda B-series engine and how amazing it was. It was the “hot rod” engine of its time and my gateway into modifying cars. The planning, researching, parts sourcing, building, and then seeing how it improved the car’s performance is what got me hooked. In the early 2000’s, Honda came out with something even better..
Trackspec's Exige S240 Project Part 9, Brakes
In Part 8, we were waiting on a driver net before we could have the tech inspection done. The Schroth net with the new quick release mechanism that we originally ordered was still undergoing testing and its availability was severely delayed. So, we went with a equally good option- Safecraft.
Trackspec's Exige S240 Project: Part 8, Roll Cage
With a year of rebuilding and developing the Exige behind us, we were excited to begin our “winter project,” the roll cage. When the car came back from the last track event of the year (a very wet Laguna day), we gave it a good wash inside and out before getting into it. We also had to do some homework and make sure that what we build is safe and legal for the the local sanctioning bodies we plan to race with. We followed NASA’s Club Codes and Regulations handbook as a guide.
Trackspec's Exige S240 Project: Part 7, Clutch, Trans, Misc.
At the last two-day track day at Buttonwillow with Speed Ventures, shifting in the Exige started to get notchy. It would sometimes be difficult to get into gear, but we kept driving it. By the last session of the day, we were not able to get the car into gear after pulling off into paddock. If the engine was off, it would go into all gears, so we suspected it to be a failed clutch that was not fully disengaging...
Trackspec's Exige S240 Project: Part 6, Fuel and Oil Control
Fuel starvation is a well known problem with this platform. It’s mostly noticeable on long left hand corners because the fuel pick up is on the left side of the tank. It’s typically not an issue if I keep the fuel tank full, but every time our got down to about 70%, it would starve. This can cause a lean condition and be harmful to the engine, especially with forced induction.
Trackspec's Exige S240 Project: Part 5, Cooling
The Exige S is known for heat soaking and extremely high IATs (intake air temps). The stock intercooler is mounted on top of the hot engine and doesn’t get nearly enough airflow through the small roof scoop. It also doesn’t help that the hot air from the radiator exits in front of the windshield and makes its way into the roof. There are some things you can do to help like a larger intercooler, additional ducting from the side scoops, larger roof scoops, or adding fans to the intercooler…
Trackspec's Exige S240 Project: Part 4, Completed Aero
This past Monday, June 24, we decided to take a team day-off to go to the track with Golden Gate Lotus Club. In addition to drives, meets, and fun outings, GGLC hosts great track & autocross events. Only three run groups, so you get SEVEN sessions! Not to mention, they always offer snacks, coffee, fruits, and sometimes even lunch!
Trackspec's Exige S240 Project: Part 3, More Goodies
It’s no secret that Reverie makes high quality (wind tunnel tested) aero parts for the Eliges and I’ve always liked their front splitter design. Although Reverie’s mounting solution works great and is solid, I decided to attach the splitter directly to the chassis, and not to the front clam. My reason for this is so that I can easily remove the front clam without having to remove the splitter first. This did require cutting the front lower portion of it so that it could just rest on top of the splitter…
Heidi Build: E36 M3
Following my crash at Sonoma last October I spent some time thinking about what I wanted to do next. I knew I wanted to continue racing with NASA in Super Touring because the ST4 class is growing steadily and we have great camaraderie amongst the competitors in the field. For a brief moment, I actually considered building another S2000 but realized after 9 years with the platform that it was time to move on and do something new. As such, in November we began tearing down what was left of “Irene” and selling any remaining/usable parts.