Ford and Rover V8 Engine Dry Weights

[RedCabbage]

I found a page on the web with all the dry weights/specs for the Ford Mustang V8 engines the other day but can't find it again.

Also definitive weight of a Rover V8 engine would be useful too.

Any pointers?

[cymtriks]

On another thread-

Marquis Rex said:

I'm tired of the hype surrounding the RV8 engine. Man, I've heard figures as low as 130 Kgs being banded about for its weight. It's a widely used readily available engine- and there's a lot of tuning knowledge out there for it (some of the tuning is questionable).
But lets put things into perspective here:

These are the true weights of a late Disco 4 litre engine, compliant with all the modern emissions and refinement criteria.

Accessory Drive Belt - (1) 0.341kg
Air Cleaner Body 0.977kg
Air Cleaner Element 0.299kg
Air Cleaner Top 0.467kg
Air Flow Meter 0.226kg
Air Hose/Duct - (1) 0.325kg
Alternator 7.196kg
Engine Complete 177.000kg
Engine Management - E.C.U. 0.390kg
Starter Motor 4.060kg
Viscous Coupling 2.942kg
Engine Oil 5.676kg

The above comes to 200 kgs. Now an earlier vehicle will probably NOT have the reduction gear starter motor fitted and so you can expect that to weigh about 8 kgs, the accessory drive won't be poly belt driven but individually driven So that will weigh quite a bit more. The above also does NOT include the flywheel, which on the Rover is very very heavy compared to it's contemporaries. So we're already looking at way over 220 Kgs. The extra capacity over the 3.5 litre will lose some in the crank area, but because the RV8 doesn't have a fully counterweighted crankshaft- not as much as you might imagine. The block has been reinforced since the early days, but I can't see that adding much more then about 5-6 kgs. So these silly figures of around 140Kgs are Science Fiction.
Other points of note are the fact that the valve timing does its own thing about about 4000 rpm due to the flex in the pushrods and rocker shaft location-this has a HUGE effect on top end power, an area where the undervalved Rover V8 struggles already- enlargening the capacity further will just boost low speed torque with little effect on peak power due to the restrictive nature of the cylinder heads- you’ll end up having to go to specially made Wildcat heads to get the top end back unless you’re particularly fond of the feel of a “diesel-esque” torque curve. Now don't get me wrong, the RV8 is a great "working class hero" of an engine- readily available. I TOTALLY understand the emotional reasons behind choosing this legendary stalwart powerplant, or retaining it for a sense of originality- fair play. But when biased folk start to pitch this motor, on function, against the Chevy C5 motor or a twin cam Jag, BMW, or Porsche V8s spending thousands upon thousands and seriously believing all the hype, they're on shaky ground.

Note the value for "engine complete" of 177Kg or 390lbs.

[RedCabbage]

Sounds about right to me.

Thanks

[oppressed mass]

Could try here, not been updated for a while: -
www.team.net/sol/tech/engine.html

later Ford Mustang engine weights I should be able to dig out if you want?

[RedCabbage]

oppressed mass said:

Could try here, not been updated for a while: -
www.team.net/sol/tech/engine.html

later Ford Mustang engine weights I should be able to dig out if you want?

Thanks that's fantastic - it helps a lot!