Tuning a Rover v8

oldie · 13th July 2016, 19:37

I understand from articles and forums that MG/Rover had plans to market a higher output 260. Possibly manufacturing a model rated to 385 bhp. Is it known if there were any plans to upgrade the Rover v8? If so would the same automatic gearbox have been retained and to what potential output? I imagine any putative upgrading would have been ecu based.

AndyG · 13th July 2016, 19:49

I don't know of any supercharged R75V8s.

Most of the challenge is the mapping,
There are not enough cars made, so cost of mapping for a few cars wanting a SC is not feasible.

sjr · 13th July 2016, 20:01

The higher output engines (All Ford) would have been supercharged 385hp and I think they planned an even higher output.
I don't see why a 385hp, 75 V8 wouldn't have also been produced, if MG/Rover didn't fail.

SJR

Les4048 · 13th July 2016, 20:13

Quote:

Originally Posted by AndyG

I don't know of any supercharged R75V8s.

Most of the challenge is the mapping,
There are not enough cars made, so cost of mapping for a few cars wanting a SC is not feasible.

There aren't any due to mapping problems with auto box, I remember reading it wasn't suitable

ianbstag · 14th July 2016, 22:59

Quote:

Originally Posted by Les4048

I remember reading it wasn't suitable

Never understood this, there's hundreds of supercharged automatic Mustangs all over the world, so it can't be impossible

micksnr · 15th July 2016, 17:51

It's a myth, the tuning files are readily available for various makes of programmers and there are tuners in this country that are more than capable to carry out the job. There is nothing special about a zt v8 or a 75 v8 that makes them any harder to tune or modify than another vehicle using that engine/gearbox set up.

AndyG · 15th July 2016, 19:09

Do you know about the 2 or is it 3 that have failed ?

oldie · 16th July 2016, 07:00

What happened to the cars that failed? How did they fail? Not looking for controversy, merely interested in what can or cannot be done.

ceedy · 16th July 2016, 07:12

Piston Failure due to poor fueling at higher RPM .
Just weak mixtures, nothing too complicated.

in the world of Internal combustion

C.

micksnr · 16th July 2016, 12:58

As Ceedy says the last one has gone lean at full throttle, it's not the first time that car has done that !!!!

A good look at how the fuel pump is driven will answer a few questions about that car. Unfortunately the owner is having to pay for someone else's mistake. I've seen the pressure and flow graphs off of my car when it had the standard set up and it made me shudder when it got past 4.5k rpm, so mine has got a twin pump set up.
As for the other cars that have gone bang from both sides of the fence, over revving has killed a few and lack of fuel pressure or lack of fuel flow has probably seen to the rest of em.

13th July 2016, 19:37	#1
oldie Loves to post Connoisseur SE v8 auto '54 Join Date: Jan 2009 Location: West Sussex Posts: 490 Thanks: 105 Thanked 56 Times in 41 Posts	Tuning a Rover v8 I understand from articles and forums that MG/Rover had plans to market a higher output 260. Possibly manufacturing a model rated to 385 bhp. Is it known if there were any plans to upgrade the Rover v8? If so would the same automatic gearbox have been retained and to what potential output? I imagine any putative upgrading would have been ecu based.

15th July 2016, 17:51	#6
micksnr Regular poster mg zt 500 Join Date: Jul 2009 Location: wakefield Posts: 33 Thanks: 5 Thanked 2 Times in 2 Posts	It's a myth, the tuning files are readily available for various makes of programmers and there are tuners in this country that are more than capable to carry out the job. There is nothing special about a zt v8 or a 75 v8 that makes them any harder to tune or modify than another vehicle using that engine/gearbox set up. __________________ ZT500 Kenne Bell Supercharger, Tremec T56 gearbox, return type fuel system, forged engine internals, custom made exhaust system,

16th July 2016, 07:12	#9
ceedy This is my second home All Trophy Blue ,ZT260#50 , ZT CDTI Auto, ZR105+ and 1.8T Firefrost spoiling the Set . Join Date: Nov 2006 Location: Nr Sherborne But in Somerset.. Posts: 6,098 Thanks: 916 Thanked 1,214 Times in 768 Posts	Piston Failure due to poor fueling at higher RPM . Just weak mixtures, nothing too complicated. in the world of Internal combustion C. __________________ The Three Bloo's Wifey's Zr105, MY CDTI & 260 #50 and Number One sons 1.8T in Firefrost When I were a lad Zero to 142 in 10.25 secs at the Pod on my Blown Norton. 210 Kart Champ in 70's Last edited by ceedy; 16th July 2016 at 07:14..

16th July 2016, 12:58	#10
micksnr Regular poster mg zt 500 Join Date: Jul 2009 Location: wakefield Posts: 33 Thanks: 5 Thanked 2 Times in 2 Posts	As Ceedy says the last one has gone lean at full throttle, it's not the first time that car has done that !!!! A good look at how the fuel pump is driven will answer a few questions about that car. Unfortunately the owner is having to pay for someone else's mistake. I've seen the pressure and flow graphs off of my car when it had the standard set up and it made me shudder when it got past 4.5k rpm, so mine has got a twin pump set up. As for the other cars that have gone bang from both sides of the fence, over revving has killed a few and lack of fuel pressure or lack of fuel flow has probably seen to the rest of em. __________________ ZT500 Kenne Bell Supercharger, Tremec T56 gearbox, return type fuel system, forged engine internals, custom made exhaust system,

13th July 2016, 19:49	#2
AndyG Passed Away MG ZTT400 SHM Join Date: Mar 2007 Location: Exeter Posts: 273 Thanks: 4 Thanked 54 Times in 43 Posts	I don't know of any supercharged R75V8s. Most of the challenge is the mapping, There are not enough cars made, so cost of mapping for a few cars wanting a SC is not feasible.

13th July 2016, 20:01	#3
sjr Avid contributor MG ZT 260 & Ford Mustang 5.0 GT Join Date: May 2009 Location: Uxbridge Posts: 208 Thanks: 1 Thanked 17 Times in 12 Posts	The higher output engines (All Ford) would have been supercharged 385hp and I think they planned an even higher output. I don't see why a 385hp, 75 V8 wouldn't have also been produced, if MG/Rover didn't fail. SJR

15th July 2016, 19:09	#7
AndyG Passed Away MG ZTT400 SHM Join Date: Mar 2007 Location: Exeter Posts: 273 Thanks: 4 Thanked 54 Times in 43 Posts	Do you know about the 2 or is it 3 that have failed ?

16th July 2016, 07:00	#8
oldie Loves to post Connoisseur SE v8 auto '54 Join Date: Jan 2009 Location: West Sussex Posts: 490 Thanks: 105 Thanked 56 Times in 41 Posts	What happened to the cars that failed? How did they fail? Not looking for controversy, merely interested in what can or cannot be done.