Wanted Rover V8 ali Flywheel
Discussion
I can vouch for the rev-drop issue. My 5.1litre (nicely boxed-up awaiting rebuild and supercharger) has a venolia alloy flywheel (cast and machined by Britten Motorcycles here in NZ) that weighs as much as a damp bus-ticket. Lovely looking piece of kit, shame nobody ever gets to see it!
They are quite expensive though. My little 4.0litre engine has a lightened and balanced standard item and to be honest it's probably all you'll need in a road car engine.
They are quite expensive though. My little 4.0litre engine has a lightened and balanced standard item and to be honest it's probably all you'll need in a road car engine.
jamieheasman said:
.... My little 4.0litre engine has a lightened and balanced standard item and to be honest it's probably all you'll need in a road car engine.
agree, how do you find it 
. Personally I've found it picks up and delecerates a bit quicker, not that slowing a light(ish) car too quickly under engine braking is ideal for a road car. Hence my original question about the 'slightly' 
lightened version, not forgetting balanced one, as opposed to a fully lightened one which I think may be step too far for a road car. Harry
I run an aftermarket engine management and a bosch idle controller (no sodding stepper motor!) and it all seems to work ok. There's plenty of scope for more tuning too. The revs do drop a bit on sudden deceleration but it's never stalled and a lot of this is down to the rather primitive ecu (late 90s LINK).
The 4.0litre engine is ex-Range Rover Discovery and the only modifications are a different cam, the lightened flywheel and of course the aftermarket ecu (fuel and ignition). I must say it goes bloody well and is one of the quickest 4.0litre Chimaeras I've driven.
One word of warning. If you fit a lightened and balanced flywheel to an otherwise standard engine it can exaggerate any imbalance in the rest of the rotating assembly, so if you're unluckly your engine can feel a little rougher. Of course if you're building the engine from scratch you'll be getting all the rotating items balanced together.
The 4.0litre engine is ex-Range Rover Discovery and the only modifications are a different cam, the lightened flywheel and of course the aftermarket ecu (fuel and ignition). I must say it goes bloody well and is one of the quickest 4.0litre Chimaeras I've driven.
One word of warning. If you fit a lightened and balanced flywheel to an otherwise standard engine it can exaggerate any imbalance in the rest of the rotating assembly, so if you're unluckly your engine can feel a little rougher. Of course if you're building the engine from scratch you'll be getting all the rotating items balanced together.
jamieheasman said:
One word of warning. If you fit a lightened and balanced flywheel to an otherwise standard engine it can exaggerate any imbalance in the rest of the rotating assembly, so if you're unluckly your engine can feel a little rougher. Of course if you're building the engine from scratch you'll be getting all the rotating items balanced together.
Agree , hence on another thread I brought up about the standard of Tiv factory balancing being restricted to the crank pulley for a lot of the engines, unless you pay more that is......but yoy never know until its in bits. harry
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