I have an S3 HC Esprit, which on the whole I'm very happy with, but we always want more don't we?!
It runs a bit rough at low revs and after a bit of research (and a visit to a rolling road) I'm advised it needs the carbs refurbished and then properly set up again. However, this will cost upwards of £500 (approx £150 per carb to rebuild and then setting up on a rolling road etc etc).
To me this seems like only a temporary solution as the likelihood is that they'll need doing again soon enough and, in truth, there won't be a massive performance benefit. I don't necessarily want more power (although that's always good of course), but to make the car more driveable/reliable.
It seems to me (after more research) that in order to make the car more driveable there are two paths that one can take:
1/ Upgrade the ignition system (2D mapped ignition via a fabricated crank sensor or full 3D mapped ignition utilising a throttle position sensor as well).
2/ Upgrade the induction system (throttle body fuel injection in conjunction with option 1))
Being only an averagely competent home mechanic I am not confident/competent enough to try fitting either option myself. I have spoken to various companies in regard to supplying and fitting both options and (brace yourself!) option 1 comes in at around £1000+ and option 2 around £2500+!!
After all that my question:
I was wondering if anyone has experience of fitting bike carbs to the Esprit? Good points? Bad points?
I was thinking of (for instance) fitting late Yamaha R1 bike carbs (£150 or so from a well known auction site), which also come with a their own throttle position sensor, which would allow the later upgrading of the ignition system when funds allow. I would, of course, need a custom inlet manifold, which (after yet more research) seem to be available from a company called Bogg Brothers for around £200...