Hotgolf will usually send you one first, then you return yours as exchange. You might need to send him the pressure plate though so he can balance it. Well worth doing, and you probably won't do a better mod to your car for 67. I've still got my original flywheel that i removed from my car once i fitted Hotgolf's lightened jobbie. Supposed to send it back to him but i've emailed him about it a few times to try and get his address and he hasn't replied!! I presume he doesn't want it, so its going spare if anyone needs it for lightening.
there are potential downsides, it may make your engine resonate and damage itself at certain revs, however the evidence seems that for most VWs it's ok only real issues seems to be with the dual mass on 02j boxes and some extra vibration at idle
WTF - can do without that. Is it that this can happen on some car types or that this can happen on any car but doesn't seem common on most VW's. I have a 16v Mk3. ANy further advise? OK, I understood the "some extra vibration at idle" but why is this? "dual mass on 02j boxes" - ??? Something to do with gearboxes but I haven't a clue what!
flywheels are there to store energy and damp vibration, and move potentially damaging vibrations out of the rev range normally used In a mk3 16v application i wouldn't worry, a hotgolf lightened flywheel will be fine. the 02j gearboxes, early A3 and mk4 5 spd gearboxes, come with a 2 part flywheel, when this is replaced with a single piece one it tends to rattle a little, but this may be dependant on clutch choice bit more here
I guess this is why it is better to balanced with everything else - less vibration?? Cheers Prof (& all!)
I went to my local shop too years ago for 1. He took sod all off, and balanced it to his spare tractor wheel. 66-67-68 gets you postage too. Unfourtuantly I can't do sod all for a while, until I get my own lathe and mill setup
Agree, obviously once you include postage, your price is comparable. I struggled to find a place who'd do it, until eventually I found one 8 miles away. I'm collecting it tomorrow, I'll let you know how much they've taken off.
ide be more worried about how well balanced it is myself... hotgolf same again fella ill be needing one for my mk2 oettinger converison thats being started in 3 weeks at long last... i spoke to ya before just letting ya know i need one when ur ready fella cheers and keep up the good work
As prof has said it helps make the engine run to smoother. If you take to much weight off the flywheel you can make the engine run lumpier at low revs and more prone to stalling when idleing or pulling away. I've had mine done, only cost about 40 from a professional engine builder. Quasar Engineering in Stockport, they also balanced the crank, pulleys and plate while I was at it (although this did cost more). They make race engines so I'm happy with their reputation and their work looks spot on.
i had a 6lb Fidanza one on mine (stock weight 18lb). It was quite easy to stall it, i found you had to have a lot more revs on to pull away. it did rev like a bike engine though, made the car 'feel' lighter (if that's possible?).
I picked up my flywheel today (VR6). My instructions were to go easy and not take too much off, not to make it unsafe or weak or anything. It started out at 7.5kg and they took 1.5kg off it.
Inertia is put simply energy stored in the flywheel at a certain constant speed, when the power is reduced, the stored energy trys to keep the flywheel turning until the energy stored runs out. this helps on initialy hitting a hill because less engine power is required to maintain a certain speed. but this can also hinder acceleration and engine breaking because it takes energy to store energy, so the engine has to work harder to turn the wheel. finaly, lighted flywheels that have been botched or poorly done make the engine vibrate like mad and very unsocaible at low speeds. the flywheels secondry job is to smooth off the up and down motion of the pistions and absord any vibration and un even firing etc. iv had a lighted flywheel, and if done properly they are great, there is just enough weight to help the engine, but at the same time light enough to let it rev freely and quikly sorry to be a know-it-all etc, just thought id give a bit of info seens as iv had one or two on different cars
