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1969 S2 Europa Hill climb car - 700whp Turbo Honda K24 swap
S2Zetec54:
Oh my giddy aunt! Can’t wait to see this completed and in action
:Welcome: :beerchug:
Taimoshan:
--- Quote from: gideon on Thursday,February 16, 2023, 09:30:05 AM ---That's a lot of progress for 6 months work. I'm impressed by that.
I have a lot of questions though. Why does the front cross section appear to now be higher than the backbone? Where did the front and rear uprights come from? The Honda engine looks very tall in that chassis - will it fit under the bodywork? Where will the body mount at the back? You have the rear suspension lowers mounted to the transaxle - are you sure that's the best plan? How close were you able to get the rear wheels relative to the bodywork?
--- End quote ---
Hey, lots of questions there. The front cross section was 40mm raised when I rebuilt that front. The reason was to lift the body 40mm so the chassis backbone was flush with the flat floor in order to improve aero and to give me extra height under the rear engine cover to fit the taller Honda motor ( which you rightly spotted is significantly taller than the Renault engine.
The front uprights are alloy Cortina uprights as used on the Ford GT40 replicas, the rear are fabricated uprights as used in a number of Lotus 7 / caterham clones with independent rear ends. The suspension arms I designed and built myself, with geometry designed using suspension software.
Rear wheels could fit under the std bodywork, but thats not what I am after as a race car and under body aero defuser would be radically reduced.
Re lower rear suspension mounts, what is your concern ?
Taimoshan:
Thought I better add some pics of the front and rear suspension.
The aero profiled and round tube is BST45 motorsport steel, similar to Chromoly, but without the post weld heat treatment requirements.
I went a bit OTT with the tube dia's but for almost no weight penalty with this thin wall tube, I think it was worth it.
gideon:
--- Quote from: Taimoshan on Thursday,February 16, 2023, 11:29:17 AM ---Re lower rear suspension mounts, what is your concern ?
--- End quote ---
Just the problems of connecting the suspension to engine & transaxle movement. As it's a race car you might have the engine and transaxle rigidly mounted. In which case that concern goes away.
Taimoshan:
--- Quote from: gideon on Thursday,February 16, 2023, 04:59:21 PM ---
--- Quote from: Taimoshan on Thursday,February 16, 2023, 11:29:17 AM ---Re lower rear suspension mounts, what is your concern ?
--- End quote ---
Just the problems of connecting the suspension to engine & transaxle movement. As it's a race car you might have the engine and transaxle rigidly mounted. In which case that concern goes away.
--- End quote ---
Yes the engine and gearbox are rigid mounted to the frame, you are correct :-)
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