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tips, technology, tools and techniques related to vehicle driveline components

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RDMG
Dave R
Northern Virginia
(66 posts)

Registered:
04/07/2016 08:29PM

Main British Car:
1979 MGB 4.6L Rover V8

New(?) 7.5lb Rover V8 billet steel flywheel
Posted by: RDMG
Date: December 12, 2017 08:50AM

This popped up in my regular auction searches, and I hadnít seen it discussed here before.

Itís a UK made racing spec piece, requiring a special clutch. Lightest RV8 flywheel Iíve seen, but it does look delicate. About $480 with shipping.

Seems like someone out there with deep pockets might be interested:

[www.ebay.com]


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5389 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: New(?) 7.5lb Rover V8 billet steel flywheel
Posted by: BlownMGB-V8
Date: December 12, 2017 11:26AM

That would be for a 7.2" double or triple disc clutch assembly (also very light). Should work quite well but have little momentum for starts. Probably too light for street use.

Jim


roverman
Art Gertz
Winchester, CA.
(2879 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: New(?) 7.5lb Rover V8 billet steel flywheel
Posted by: roverman
Date: December 12, 2017 05:19PM

The problem with race clutches on the street, is they're all-in/all/out, making for a lot of attention getting, you may not like. No marcel and torsional hub , becomes miserable for the street. 2 cents, art.


40indianss
don foote

(32 posts)

Registered:
08/01/2013 04:35PM

Main British Car:


Re: New(?) 7.5lb Rover V8 billet steel flywheel
Posted by: 40indianss
Date: December 12, 2017 08:10PM

Seems a little pricey to save 2-3lbs over an aluminum ten lb wheel from d&d. Would the difference even be noticeable on the street? Don't think so


RDMG
Dave R
Northern Virginia
(66 posts)

Registered:
04/07/2016 08:29PM

Main British Car:
1979 MGB 4.6L Rover V8

Re: New(?) 7.5lb Rover V8 billet steel flywheel
Posted by: RDMG
Date: December 12, 2017 08:49PM

All practicalities aside, it is a beautiful piece of machine work, isnít it?

I have a stock 215 v8 flywheel from a 1962-ish Buick Skylark in my garage. If you were to compare the two side by side, it would be impressive how different the same mechanical part can be.


BlownMGB-V8
Jim Blackwood
9406 Gunpowder Rd., Florence, KY 41042
(5389 posts)

Registered:
10/23/2007 12:59PM

Main British Car:
1971 MGB Blown,Injected,Intercooled Buick 340/AA80E/JagIRS

authors avatar
Re: New(?) 7.5lb Rover V8 billet steel flywheel
Posted by: BlownMGB-V8
Date: December 12, 2017 09:32PM

Almost all the weight is in the center so yeah, for racing it would make a difference, especially with the dual disc clutch.

Jim


roverman
Art Gertz
Winchester, CA.
(2879 posts)

Registered:
04/24/2009 11:02AM

Main British Car:
74' Jensen Healy, 79 Huff. GT 1, 74 MGB Lotus 907,2L

Re: New(?) 7.5lb Rover V8 billet steel flywheel
Posted by: roverman
Date: December 14, 2017 07:13PM

All them $'s and NO extra ground clearance ? Looks like the teeth are NOT replaceable.



Blown v8
Bryan Phipps

(40 posts)

Registered:
03/10/2013 04:52PM

Main British Car:


Re: New(?) 7.5lb Rover V8 billet steel flywheel
Posted by: Blown v8
Date: January 21, 2018 12:20PM

I've had one of the alloy f/wheel and clutch (d&d)
IMG_4577.JPG

The alloy one,is a good clutch,(sintered bronze) engine spins quicker,you need to warm up the engine more before driving off.
Otherwise it stalls,it would really suit a circuit car,On a drag type car,it hasn't got the weight/inertia,and it cost me a few tenths of a second !
Gone back to my Mcleod steel flywheel,with ceramic paddle clutch.
I know what you mean about being like a switch,but by changing the master cylinder you can fine tune the system.
You do need a lot of free play with both of these clutches,(2 to 2 1/2" on the pedal)


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