정기점검PistonHeads★ 신뢰도 4.1 (높음)

아우디 A4 수리 사례

1998년식 · B5 (1994-2001) · 1.8T

2026. 10. 27. 작업

난이도 & 준비물

증상

Project Bugster Concept:Sensible people would leave it at that, sensible people definitely wouldn't even contemplate a Boxster based RAID buggy, sensible people would know that you couldn't possible build a competitive off road competition vehicle from a hairdressers car, sensible people wouldn't have two other Porsche based projects on the go.....Anyway I bought this last week: An awesomely base spec 2.5L 1998 Boxster with a depressingly grey interior and a proper poverty spec with the exception of having climate control.Clean isn't it.... that's because it's done less than 45K miles. I had s

처리 내용

One of the potentially more challenging aspects of this build is going to be camber, or rather how to put a load more height into a vehicle that's designed to be very much at one static height and is on mcpherson struts on the front. The nature of a strut type suspension is that it has camber change during its motion, in the case of the Boxster it gains negative camber in compression and looses it in extension. What this means is that if you extend the suspension, for example by increasing the length of the damper you end up with a load of positive camber.... something which is not good or useful in any way. To solve this we can do two things, either move the upper pickup point i.e the top mount which in turn moves the angle of the wheel or extend the lower wishbone length which again moves the angle of the wheel. Eurowise actually make a lift kit for the 986 which extends the damper by adding a section between the top mount and chassis and in turn moves the effective pickup point:This is fine for circa 50mm of ride height increase but above this stuff starts to clash as you need more offset to compensate for the height. You also don't get any more travel. Hence I need a better way to do it.... with a longer bottom arm. This means I can also keep the ball joint angle under control i.e. I can position it so the deflection is biased where I need most travel. So basically I need longer arms. No one makes a longer bottom arm for a 986 but Porsche (and a few copy cats) do make shim adjustable arms for the GT2/GT3: Which use a seperate inner bush carrier which is then shimmed off the main component to provide camber adjustment:So the plan is to use the main component as is and then draw up and manufacture a new inner bush carrier which has circa 20mm more material on it before the studs. This will take a poly bush to allow for greater range of movement vs bonded rubber and the additional length means it will increase the effective length of the wishbone whilst still allow