Supercharged 4.6?

[Pedro_The_Swift]

A new gentleman in the RR Forums is going to put a supercharger on his 4.6RR


and so,,
no, not mine,, not even a LRV8

but
there IS enough depth under the bonnet, to fit one of these between the V's,,

https://www.aulro.com/afvb/images/imported/2017/06/18.jpg

[p38arover]

Many years ago, when I was Editor of the LROC News, I published an article on a member's supercharged 3.9 Disco 1. I might still have that article on CD-ROM,

[pop058]

125205

125206

[bigsmile1]

[Pedro_The_Swift]

goes to show,, rip the two inlet manifolds (top and bottom) off and theres a HEAP of room for a charger in there,,,

[Eevo]

yes its possible but the plenums (from memory) are not very good for forced induction.

[Nick S]

Reminds me of that knob Ninja Mike with the supercharged RRC that wanted $40K - wonder where he is now?

[Disco Muppet]

Reminds me of that knob Ninja Mike with the supercharged RRC that wanted $40K - wonder where he is now?

He's still in court trying to argue he doesn't have to pay speeding fines [emoji23][emoji23][emoji23]

[grey_ghost]

Hmmm - my 101 has an EFI 4.6 in it... Imagine a 101 with a supercharged 4.6.. [wink11]

[Pedro_The_Swift]

yes its possible but the plenums (from memory) are not very good for forced induction.


Please explain Eevo?
I would've thought with forced induction it would not matter,,
and for whatever reason, I thought you would just bang it top of the bottom manifold so we could use the standard injectors,,
https://www.aulro.com/afvb/images/imported/2017/07/260.jpg

hopefull someone that actually knows about these things will step up with their teaching hat on,,, [bigwhistle]

[Eevo]

RPi Engineering - V8 Engine and Component List (http://www.v8engines.com/engine-3.htm)






Warning against Supercharging the 4.0 or 4.6 Engine https://www.aulro.com/afvb/images/imported/2017/07/240.jpg (http://www.v8engines.com/engine-3.htm#top)



Those with supercharges, will also discover this. On most supercharged engines, Especially those using the Eaton M90), poor fuel distribution and weak mixtures eventually cause detonation that will collapse the ring grooves on the rear cylinders and cause partial engine seizure, and eventual piston breakageClick on any image for larger view

https://www.aulro.com/afvb/images/imported/2017/07/241.jpg (http://www.v8engines.com/engine-3b-big-1.htm#top-pic)
https://www.aulro.com/afvb/images/imported/2017/07/242.jpg (http://www.v8engines.com/engine-3b-big-1.htm#Middle-pic)
https://www.aulro.com/afvb/images/imported/2017/07/243.jpg (http://www.v8engines.com/engine-3b-big-1.htm#bottom-pic)


You Can easily see, that this Supercharger (the M90) is far too small for the V8 Engine as it only covers three off the 8 cylinders, all others get varied pressure and flow that cause very poor combustion.
The Air flow is not good at all, as and the Air filter is mounted in the corner of the engine bay is not only lacking an intercooler, it is picking up hot air from the exhaust manifolds too, the rooting of the system is also very poor
As you can see the poor fuel distribution is causing the cylinders to run progressively weaker towards the back of the engine, Also you will notice the excessive un-burnt fuel sprayed from the extra injector is causing a high carbon build on the pistons after only a few thousand miles

[Disco Muppet]

No way would I spend money on forced induction for the Rover V8. I'd sooner spend the money on putting a stronger motor in like an LS and go from there.