Genuine question for the 160bhp gurus

thomas 75 connie · 16th March 2016, 07:02

Hi I hope this is ok to write. If not please delete.

Having been out in some 115bhp diesels and quite frankly thinking they were dangerous.

Then going out in some 160bhp upgraded cars. I found the performance adequate.

Is 160bhp the top whack for these engines in rover tune or is there more to come?

This is a genuine question as I really respect the people that make these things happen to our cars.

I have not got a diesel but am curious.

Thanks in advance Thomas

BigAde · 16th March 2016, 07:16

Quote:

Originally Posted by thomas 75 connie

Hi I hope this is ok to write. If not please delete.

Having been out in some 115bhp diesels and quite frankly thinking they were dangerous.

Then going out in some 160bhp upgraded cars. I found the performance adequate.

Is 160bhp the top whack for these engines in rover tune or is there more to come?

This is a genuine question as I really respect the people that make these things happen to our cars.

I have not got a diesel but am curious.

Thanks in advance Thomas

Others with more knowledge will be along shortly, but I'm sure I read that it was developed to the designed limits of the engine. While I've read of higher maps in existence they are probably pushing the engine beyond its limits and are not advisable if you value your engine.

Ravinder · 16th March 2016, 07:32

I think they're is some guys running more power. I vaguely remember seeing it somewhere.

Coups · 16th March 2016, 07:55

I hope there is a fairly inexpensive way to obtain more power from the cdt however I doubt there is. Surely if there was it would be common knowledge and many members would have followed that route. I'm sure there are folks that have thrown money at the car and fitted performance parts etc but I wonder how much real world gain they could obtain without making the car brittle and spending a fortune!

mystabe · 16th March 2016, 08:33

I was always of the understanding it's because it has a cast crank rather than a forged one (as in the similar BMW engine) so the torque of the 160 map is about the safe limit but I have been wrong before

It is a shame, I've had the 160 map for 2 years now and while it's an extremely worthwhile addition I've never thought it made it a 'fast' car - don't get me wrong you can more than keep up with traffic with it but a little bit more would be nice..... but wouldn't it always

Heddy · 16th March 2016, 09:04

Not a guru but feel that any higher than 160 would have probably defeated it's purpose. Firstly, it's been tested as 'safe' regarding engine component protection, and secondly, it maintains the main reason people buy diesels..fuel economy. Certainly bhp can be, and is, pushed higher, but there's a compromise.

Jakg · 16th March 2016, 09:15

More power than standard is always available if you are willing to accept the risks that come with.

Ravinder · 16th March 2016, 09:22

160 is defo a worth while upgrade but defo not fast. Don't think there's much between the 160 and 135. More noticeable from the 115.

maxxpump · 16th March 2016, 09:23

I believe there is an upper limit to how much torque our gearboxes can handle so I don't think it is so much of a question is the M47R can handle the extra power it is can the transmission handle it! I've heard on the BMW forums of M47's being tuned to 180BHP, when I spoke to phil t4 (don't quote him on it, it was passing conversation) he said it couldn't be done because of transmission issues related to our cars (or to my auto box anyway). I think 160BHP is enough anyway as its enough to overtake and I will say its really good when you do 30-120mph. Also our fuel economy has gone up s well and believe if 170-180 i obtainable it would just hurt economy with no real noticeable power difference!

Westonboy · 16th March 2016, 09:25

I find the 160 upgrade great for my needs but certainly agree that the 115 engine is wholly inadequate, I am staggered to think that BMW could have considered such a derated power unit in such a wonderfull car.

16th March 2016, 07:02	#1
thomas 75 connie This is my second home Rover 75 launch car x2, Rover 800 Vitesse Join Date: Jan 2009 Location: Plymouth Devon Posts: 8,463 Thanks: 1,115 Thanked 1,083 Times in 653 Posts	Genuine question for the 160bhp gurus Hi I hope this is ok to write. If not please delete. Having been out in some 115bhp diesels and quite frankly thinking they were dangerous. Then going out in some 160bhp upgraded cars. I found the performance adequate. Is 160bhp the top whack for these engines in rover tune or is there more to come? This is a genuine question as I really respect the people that make these things happen to our cars. I have not got a diesel but am curious. Thanks in advance Thomas

16th March 2016, 09:23	#9
maxxpump Posted a thing or two Rover 75 CDT Join Date: Aug 2014 Location: Brighton Posts: 1,786 Thanks: 215 Thanked 244 Times in 205 Posts	I believe there is an upper limit to how much torque our gearboxes can handle so I don't think it is so much of a question is the M47R can handle the extra power it is can the transmission handle it! I've heard on the BMW forums of M47's being tuned to 180BHP, when I spoke to phil t4 (don't quote him on it, it was passing conversation) he said it couldn't be done because of transmission issues related to our cars (or to my auto box anyway). I think 160BHP is enough anyway as its enough to overtake and I will say its really good when you do 30-120mph. Also our fuel economy has gone up s well and believe if 170-180 i obtainable it would just hurt economy with no real noticeable power difference! __________________ Mods done: 160 upgrade, EGR bypass, Viton "O" rings, Fitted 16" unions, cleaned manifold, uprated air filter, fog lights, better bulbs, upgraded ICE and full speaker set up.

16th March 2016, 07:32	#3
Ravinder This is my second home Rover 75 saloon x2, Rover 75 Tourer x2, Rover 220 Coupe Turbo Join Date: Aug 2010 Location: Kirkcaldy, Fife Posts: 9,036 Thanks: 2,278 Thanked 2,852 Times in 1,718 Posts	I think they're is some guys running more power. I vaguely remember seeing it somewhere.

16th March 2016, 07:55	#4
Coups Posted a thing or two Rover 75 Contemporary SE Join Date: Apr 2014 Location: Dundee Posts: 1,941 Thanks: 545 Thanked 520 Times in 402 Posts	I hope there is a fairly inexpensive way to obtain more power from the cdt however I doubt there is. Surely if there was it would be common knowledge and many members would have followed that route. I'm sure there are folks that have thrown money at the car and fitted performance parts etc but I wonder how much real world gain they could obtain without making the car brittle and spending a fortune!

16th March 2016, 08:33	#5
mystabe Posted a thing or two Mazda 6 Join Date: Dec 2013 Location: Wigan Posts: 1,384 Thanks: 266 Thanked 398 Times in 287 Posts	I was always of the understanding it's because it has a cast crank rather than a forged one (as in the similar BMW engine) so the torque of the 160 map is about the safe limit but I have been wrong before It is a shame, I've had the 160 map for 2 years now and while it's an extremely worthwhile addition I've never thought it made it a 'fast' car - don't get me wrong you can more than keep up with traffic with it but a little bit more would be nice..... but wouldn't it always

16th March 2016, 09:04	#6
Heddy This is my second home None Join Date: Feb 2013 Location: None Posts: 5,556 Thanks: 465 Thanked 1,161 Times in 924 Posts	Not a guru but feel that any higher than 160 would have probably defeated it's purpose. Firstly, it's been tested as 'safe' regarding engine component protection, and secondly, it maintains the main reason people buy diesels..fuel economy. Certainly bhp can be, and is, pushed higher, but there's a compromise.

16th March 2016, 09:15	#7
Jakg This is my second home N/A Join Date: Feb 2010 Location: Suffolk Posts: 6,867 Thanks: 0 Thanked 397 Times in 302 Posts	More power than standard is always available if you are willing to accept the risks that come with.

16th March 2016, 09:22	#8
Ravinder This is my second home Rover 75 saloon x2, Rover 75 Tourer x2, Rover 220 Coupe Turbo Join Date: Aug 2010 Location: Kirkcaldy, Fife Posts: 9,036 Thanks: 2,278 Thanked 2,852 Times in 1,718 Posts	160 is defo a worth while upgrade but defo not fast. Don't think there's much between the 160 and 135. More noticeable from the 115.

16th March 2016, 09:25	#10
Westonboy Posted a thing or two Honda Jazz Join Date: Jan 2012 Location: Llangollen Posts: 1,025 Thanks: 301 Thanked 344 Times in 158 Posts	I find the 160 upgrade great for my needs but certainly agree that the 115 engine is wholly inadequate, I am staggered to think that BMW could have considered such a derated power unit in such a wonderfull car.