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IanA - The Lotus Forums #ForTheOwners Jump to content


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About IanA

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    Ian Auchinachie
  • Car
    Lotus Elise 111R

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  1. Another item to check it the position of the temp probe against the condenser in the climate box. Check to see if there have been any TSB's about this on early Evoras. I understand that if the condenser core ices up then the compressor doesn't cycle on/off and this would lead to compressor overheat.
  2. Good to see Komo-tec are developing SC cams for the 2GR-FE. Have followed developments of this supercharged engine in Lotus cars and is the missing piece to gaining improved performance. However hope that they are considering profiles as a drop-in performance upgrade for standard engines as well as profiles for built engines, as going too far would require changes to engine management and many would not want to go that far. I think the larger market for such would be prepared to invest in improved induction and a free flowing exhaust manifold to gain the performance benefit, but may
  3. Worth keeping this thread alive in the pursuit of SC cams for the 2GR-FE. Most off-the-shelf Forced Induction profiles that I have seen for this engine have been designed for turbocharging which requires different valve control to a supercharger. The turbo delivers ever increasing boost while the Supercharge has a window of controlled boost. I think the use of turbo cams on an SC car would result in power band up high but sacrifice mid range torque. Am not an expert, but like the OP would like to see someone develop and test SC cams for this engine as I think a lot could be
  4. The SSC harness bar sits 40mm higher than the factory bar - With Schroth Harnesses they supply spacers to enable retention of factory lap-sash belt.
  5. Usually a broken wire to a wheel bearing speed sensor. Can also occur with change of front to rear diameter of wheels. Occasionally can be displacement of rubber 'O' ring between top and bottom sections of ABS unit, allowing moisture to enter. ABS-Lotus_scan_tool_checking_procedure.pdf
  6. No, you will need to get the degrees of the opening/closing events at the valve from Kelford spec card. Do you have the specs for the standard cams showing opening and closing events? Would be in tech data in manual?
  7. Overlap is the number of degrees where both inlet and exhaust valves are open at the same time. For Overlap degrees add the opening number of the inlet cam to the closing number of the exhaust cam.
  8. I thought this a good explanation for those interested in the subject of different cams for supercharged engines - from kcams NZ 'Supercharged engines typically have a shorter intake, longer exhaust, and wider lobe center angle (LCA). Supercharged engines can continue pushing charge into the cylinder longer than an NA engine, and also the greater pressure differential between the manifold and the cylinder means the cylinder is filled quicker. This means they like a shorter intake duration on a later centreline, compared to their NA counterparts. Higher cylinder pressure after c
  9. Will be interested in following your investigation as have thought that there is more to be gained from cams designed to suit the supercharged application. However this would require a free flowing exhaust and the ability to change the VVT and ignition timing. Less overlap and I think an increase in exhaust valve size combined with faster ramp angles may be preferable to increasing lift to increase flow/duration. As supercharged applications of the 2GR-FE increase, I would think that someone like CAT cams would design sc cams if there was enough interest.
  10. As is DBW you could have TPS functionality checked.
  11. Worth inspecting / cleaning the IAC valve under the throttle body. The spindle in the IACV housing should move freely. IAC_Cleaning.pdf Sorry, just realised that you have DBW throttle body, not cable type above.
  12. Dropping 150kg is quite an achievement - apart from the increased engine output. But a DCT gearbox in that is going to need a lot of cooling. I like the wing mirror design - to get a better view over the rear haunches. Thanks for posting this.
  13. Also ask SSC re their tuned header exhaust system. See 'More details' at the base of this page: Best to email the development Engineer directly: [email protected]
  14. Found the right steel brackets here:
  15. If I had a 2GR-FE engine, I would check to see if anyone offers a system that T's off the oil switch port for oil pressure and temp and to retain the oil switch. I have such a system on a 2ZZ. The benefit is that you are seeing the actual temp of the oil going into the engine. Issues to consider are: The T is long enough to accommodate the outside diameter of the new pressure sender, allows for a 30mm or so deep temperature probe and most importantly has BSPT male thread to properly thread into the engine block, and a BSPT female thread at the opposite end to take the original switch
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