Metal removal at rear, opinions

[4000GT]

Ivan141 Wrote:That's where I was heading with my story... once you have a caged racecar, the world is your oyster as far as weight reduction is concerned.
In that case: yes, chop the whole lower rear end off, it will shave a few kg's off. I would advise a rear undertray or at the very least some ventilation holes in the rear bumper. With the original fuel tank out of the way, you're left with a great big void with a bumper behind it (kind of like a parachute).

That still doesnt change the fact that you're better off shaving weight off the front of the car. The rear is always easier to lighten, but you end up with a big front weight bias (great for drifting though ;-))
The headlights are pretty heavy on a trueno, so that's another thing to consider for a race car (if you haven't gutted them already).

Yeah a cage helps a lot, especially with it stitched into the car body.

I have a fibreglass bonnet and front bumper and guards, and everything is stripped off the motor and loom that practically can be. Next step for front end weight reduction would have to be space frame.

Its road registered So need the headlights, but wish someone would make a fibreglass version!

I do hear you about the parachute effect, some kind of rear diffuser would be worth a look, but so hard to design something without a wind tunnel!

Every single gram counts in class racing, not many people get that.