What flywheel....

need4speed · Post by **need4speed** » Tue May 27, 2008 10:37 am

Ive built a 4.6 out of a 3.9 block. I'll be fitting this engine into a defender 90 using an R380 gearbox. What flywheel would be best to use - standard weight 4.6 range rover??

ChrisJC · Post by **ChrisJC** » Tue May 27, 2008 12:07 pm

I'd use whatever fitted up with the clutch assembly. I don't know of any difference that matters. The 4.6 flywheel will have the teeth on it for the crank sensor, but I guess you're not using that.

Chris.

CastleMGBV8 · Post by **CastleMGBV8** » Wed May 28, 2008 2:44 pm

Didn't think there were any 4.6 engines with manual gearboxes and therefore they only came with a flex plate for the auto box. Range Rover flywheels are very heavy and I would have thought you'd be better off with a SD1 flywheel approx 31lbs which will work with either a standard or uprated SD1 clutch assembly and mate to the R380 gearbox.If you want a heavier one then one from an early manual R/Rover might work.

Kevin.

Post by **katanaman** » Wed May 28, 2008 2:54 pm

CastleMGBV8 wrote:Didn't think there were any 4.6 engines with manual gearboxes and therefore they only came with a flex plate for the auto box. Range Rover flywheels are very heavy and I would have thought you'd be better off with a SD1 flywheel approx 31lbs which will work with either a standard or uprated SD1 clutch assembly and mate to the R380 gearbox.If you want a heavier one then one from an early manual R/Rover might work.

Kevin.

Its a Defender he is building, he needs the large flywheel and clutch that goes with it.

need4speed · Post by **need4speed** » Wed May 28, 2008 7:15 pm

so do all manual defender V8's and range rover V8's have the heavier flywheel? I mean as long as i dont get an SD1 wheel it'll be ok?

r2d2hp · Post by **r2d2hp** » Wed May 28, 2008 8:15 pm

I have just fitted the 4.6 flywheel that has the timing marks built in and its actually lighter than my old flywheel from my 4.3.