Question About V8 Supercharged Engine

Doo · Nov 6, 2016

Ok, imagine I took leave of my senses, what would be involved in swapping out my current 4.0 V8 for a supercharged V8?

I know I would need to do various upgrades, but I just wonder what would need to be changed as far as electronics and such.

Indulge me, I'm bored 5hitless

wammers · Nov 6, 2016

Do an online jigsaw it will give you less headaches.

cooltide · Nov 6, 2016

Doo said:
Ok, imagine I took leave of my senses, what would be involved in swapping out my current 4.0 V8 for a supercharged V8?

I know I would need to do various upgrades, but I just wonder what would need to be changed as far as electronics and such.

Indulge me, I'm bored 5hitless

Step 1: Get rid of the p38

Doo · Nov 6, 2016

wammers said:
Do an online jigsaw it will give you less headaches.

I know it sounds like a headache, but I just want to know about the BECM and such.

I've swapped many engines, diesel to petrol and petrol to diesel, but they were easy compared to this Pandora's box that is Range Rover electrics

Doo · Nov 6, 2016

cooltide said:
Step 1: Get rid of the p38

Errmm, NO! THAT is the WHOLE idea... NEEEXT

Saint.V8 · Nov 7, 2016

Not impossible but highly involved.

Are you going to fit an original P38 Overfinch supercharged engine or Jag/Ford derived unit from a RR Sport or later L322?

Fitting a SC from on Overfinch P38 would be simplier......it should just drop straight in with a few minor fettles....not sure about gearbox the OF used mind you.

As for the later model engines....you'll need the various control units from the donor, find a way to fool the BeCM into thinking the original engine ECU is in place and then get it to talk to the gearbox ECU.....you'll no doubt encounter language and protocol issues getting the new ECU to talk with the ancient networks in the P38.

Can be done but not a good idea.

wammers · Nov 7, 2016

Saint.V8 said:
Not impossible but highly involved.

Are you going to fit an original P38 Overfinch supercharged engine or Jag/Ford derived unit from a RR Sport or later L322?

Fitting a SC from on Overfinch P38 would be simplier......it should just drop straight in with a few minor fettles....not sure about gearbox the OF used mind you.

As for the later model engines....you'll need the various control units from the donor, find a way to fool the BeCM into thinking the original engine ECU is in place and then get it to talk to the gearbox ECU.....you'll no doubt encounter language and protocol issues getting the new ECU to talk with the ancient networks in the P38.

Can be done but not a good idea.

That is why when you have time on your hands it is much easier to do a very complicated online jigsaw.

Doo · Nov 7, 2016

Ha ha ha, thanks Wammers

Saint, that's basically the reply I was looking for.

It's just a pipe dream, but if I get a decent pay out for the damage to my lower limbs, I may have a few pennies spare in which to beef up George so I can have a bit of fun

I simply wondered the easiest route to take and I'm guessing no one will want to break an Overfinch so a Jaguar unit might be the way to go. I wonder if the Jaguar box would fit or would it need to be a Range Rover unit? I imagine the diesel box is built for torque so would that be the way to go?

wammers · Nov 7, 2016

Doo said:
Ha ha ha, thanks Wammers

Saint, that's basically the reply I was looking for.

It's just a pipe dream, but if I get a decent pay out for the damage to my lower limbs, I may have a few pennies spare in which to beef up George so I can have a bit of fun

I simply wondered the easiest route to take and I'm guessing no one will want to break an Overfinch so a Jaguar unit might be the way to go. I wonder if the Jaguar box would fit or would it need to be a Range Rover unit? I imagine the diesel box is built for torque so would that be the way to go?

No the diesel box is weaker than the 4.6 petrol box. Diesel and 4.0 use the HP22. 4.6 petrols use the HP24 which is unrated.

Doo · Nov 7, 2016

wammers said:
No the diesel box is weaker than the 4.6 petrol box. Diesel and 4.0 use the HP22. 4.6 petrols use the HP24 which is unrated.

So I'm guessing unrated could mean it would accept a greater amount of torque or they don't know how much more it could accept?

wammers · Nov 7, 2016

Doo said:
So I'm guessing unrated could mean it would accept a greater amount of torque or they don't know how much more it could accept?

I don't know what the ultimate torque rating of the HP24 is but it's certainly higher than the HP22. It has more and larger drive plates in the primary clutch and stronger sprag clutches. Main fail on the HP22 are the sprag clutches.

norseman · Nov 7, 2016

Two suggestions, neither of which you will like

1) seek psychiatric help.
2) sell your current steed & purchase your dream RR already professionally converted.

Doo · Nov 7, 2016

norseman said:
Two suggestions, neither of which you will like
1) seek psychiatric help.
2) sell your current steed & purchase your dream RR already professionally converted.

It's been clear I need professional help for years

I already "have" my dream charriot, I just wanted to have a little more annoyance under the bonnet to pee off VW clowns

Besides, my bro in law has a Super Charged which is about an 06, but it has rust, whereas George is currently free of that

TVRConvert · Nov 7, 2016

http://www.sc-power.co.uk/pages/sc-power-superchargers.html

You might want to try the above, as they produce supercharger kits for TVR engines.

norseman · Nov 8, 2016

Doo said:
It's been clear I need professional help for years

Glad you took the first suggestion in the light- hearted way it was intended
You might want to run your ambitions passed your insurers first & good luck with the project.

wammers · Nov 8, 2016

TVRConvert said:
http://www.sc-power.co.uk/pages/sc-power-superchargers.html

You might want to try the above, as they produce supercharger kits for TVR engines.

Like the way they claim a 10% fuel saving at cruise. That of course is a 10% saving on what it drinks normally when fitted with a supercharger. Supercharger and fuel saving should never be used in the same sentence. Or the same descriptive text.

eddiecos · Nov 9, 2016

Buy your brother in laws and just attend to the rust issue....way much easier

Doo · Nov 10, 2016

eddiecos said:
Buy your brother in laws and just attend to the rust issue....way much easier

I think it would be cheaper, quicker & simpler to transplant a super charged in mine

Grrrrrr · Nov 10, 2016

How would the Jag gearbox mate to the transfer box? Have to switch all engine ECUs and keys.

Don't think the 4.6 engine can take much more so ditch that.

On RR.net there's a guy in the States originally from Blackpool who dropped a 6.2 lump in. Easier to convert Thor or diesel as BMW already tricked the HEVAC etc into not needing the GEMS inputs.

Rick-the-Pick · Nov 12, 2016

Super charged. Fuel ecomony. Are you on drugs.

I've driven a few super charged range rovers & after the initial £10 worth of fuel to start the fecker you can watch the fuel gauge moving as you drive.

Question About V8 Supercharged Engine

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