Go Back   The 75 and ZT Owners Club Forums > The 75 and ZT Owners Club Forums > Technical Help Forum
Register FAQ Image Gallery Members List Calendar Mark Forums Read
Notices

Reply
 
Thread Tools Display Modes
Old 23rd January 2021, 21:46   #11
Alf Best
Avid contributor
 
MG-ZTT

Join Date: Oct 2020
Location: Cullercoats
Posts: 117
Thanks: 81
Thanked 69 Times in 47 Posts
Default

Quote:
Originally Posted by Jamiewelch View Post
Maps depend on how much torque you want. The "160" map can produce around a 20% increase in peak torque. Or others offer a 50% increase in torque.

Torque is what you feel . Some people on here will say that a clutch can't handle the power, but it definitely can (providing it isn't already knackered).

See below image of a dyno printout achieving about the most torque you can get without smoke. To get more power a larger turbo needs to be fitted.

Interesting graph, what units are those then? Smarties or liquorice all sorts.?

Last edited by Simondi; 24th January 2021 at 05:52.. Reason: Post edited, no need to be confrontational
Alf Best is offline   Reply With Quote
Old 23rd January 2021, 21:48   #12
Jamiewelch
Posted a thing or two
 
Jamiewelch's Avatar
 
Alpina D3

Join Date: Sep 2014
Location: Cheslyn hay
Posts: 1,002
Thanks: 58
Thanked 294 Times in 227 Posts
Default

Quote:
Originally Posted by Alf Best View Post
Interesting graph, what units are those then? Smarties or liquorice all sorts.?
Lbft and HP. No need for comments like that. It’s an actual printout unlike the “160” ones.

Last edited by Simondi; 24th January 2021 at 05:53..
Jamiewelch is offline   Reply With Quote
Old 24th January 2021, 21:11   #13
marinabrian
 
marinabrian's Avatar
 
MG ZT

Join Date: Jan 2011
Location: Newcastle Upon Tyne
Posts: 20,151
Thanks: 3,565
Thanked 10,837 Times in 5,718 Posts
Default

Quote:
Originally Posted by Jamiewelch View Post
Lbft and HP. No need for comments like that. It’s an actual printout unlike the “160” ones.
:

On a serious note, I'd like you to calculate the maximum permissible torque transmission of a CDT clutch.

The figures are

A driven plate with external diameter of 228mm with a friction coefficient of 0.25

An axial clamping load of 1484 lb exerted by the pressure plate


No flim flam such as your clutch will be fine if it's ok, but if it's knackered it won't etc will be entertained, and your working out figures must be shown.

Brian
marinabrian is offline   Reply With Quote
Old 28th January 2021, 22:16   #14
SKS Disco
Gets stuck in
 
SKS Disco's Avatar
 
Rover 75 Saloon

Join Date: Apr 2008
Location: Atherstone
Posts: 641
Thanks: 2
Thanked 52 Times in 36 Posts
Default Xpower upgrade

Quote:
Originally Posted by david2000 View Post
hi to all
i have a question for big russ
reading the threads on this forum on remap the ecu the facelift diesel has to have the ecu remaped so is it done on the T4 with the X power software and can the bhp be increased from 131 to 160
david
The genuine XPower upgrade only unlocks a certain thing in the ECU.
All 116 are capable of 135.
All the upgrade does is remove a "gateway" to the full map.
The disc on it's own is pointless. That just allows T4 access to an area usually locked. Every disc is the same.
Now comes the clever bit
If you ordered this from XPart, you would receive a disc, instructions, a certificate which in theory you send to your insurance company and a sort of metallic sticker that should be attached just above your VIN plate on the A pillar. What you also get, is the Unlock code for your VIN !
These are unique and are generated by some Pixie at XPart
The 160 upgrade was never official but I understand it works well. Just don't ask XPart for the 160 version
__________________
Time is precious. Waste it Wisely !
SKS Disco is offline   Reply With Quote
Old 28th January 2021, 22:39   #15
BigRuss
Premium Trader
 
BigRuss's Avatar
 
75 CDT Tourer,2.5 Launch Saloon, Omipro MG/Rover (T4)

Join Date: Jul 2007
Location: Liversedge, West Yorkshire
Posts: 5,405
Thanks: 1,105
Thanked 1,340 Times in 661 Posts
Default

Quote:
Originally Posted by SKS Disco View Post
If you ordered this from XPart, you would receive a disc, instructions, a certificate which in theory you send to your insurance company and a sort of metallic sticker that should be attached just above your VIN plate on the A pillar. What you also get, is the Unlock code for your VIN !
These are unique and are generated by some Pixie at XPart
The 160 upgrade was never official but I understand it works well. Just don't ask XPart for the 160 version
If you really know what you're doing on T4 you can access the unlock code for the 135 upgrade, you don't need X-part to generate it. But the car has to be present.

But if you do go through X-part you get a nice sticker for your B pillar

Russ
__________________


Replacement Key Service
http://https://the75andztclub.co.uk/...d.php?t=244732
Full T4 Testbook diagnostics available.
Diesel ECU repair and replacement.
Options enabled or disabled as required.
Diesel X-Power 135 and 160bhp, Rover 1.8T 150 to 160
MG 160 V6 to 177 upgrades available
P.M. for details.

Last edited by BigRuss; 28th January 2021 at 22:47..
BigRuss is offline   Reply With Quote
Old 28th January 2021, 23:58   #16
SKS Disco
Gets stuck in
 
SKS Disco's Avatar
 
Rover 75 Saloon

Join Date: Apr 2008
Location: Atherstone
Posts: 641
Thanks: 2
Thanked 52 Times in 36 Posts
Default

Quote:
Originally Posted by BigRuss View Post
If you really know what you're doing on T4 you can access the unlock code for the 135 upgrade, you don't need X-part to generate it. But the car has to be present.

But if you do go through X-part you get a nice sticker for your B pillar

Russ
Apologies. I meant B pillar. But this was the official MGR way of doing it. Nowadays there is various ways of upgrading stuff. But people want OE !!
Personally, I would not bother with a 2000cc diesel if you want some HP and grunt.
Not in a car the size of a R75.
Never going to happen.

Even my ZTT 190 would not blow you away, performance wise.
Compared to a Skyline for example.

Thats a thought...
take the engine out of a Skyline and match it to a Kawasaki Z1000 engine system.A
Wow. It has been done by the way.
Was put into a ford ute pickup . 0 to 100 in about 6 seconds.
And yes, it was street legal !
__________________
Time is precious. Waste it Wisely !
SKS Disco is offline   Reply With Quote
Old 26th June 2022, 18:44   #17
Brunty
Loves to post
 
Rover 75 Saloon

Join Date: Mar 2017
Location: Newtown
Posts: 414
Thanks: 273
Thanked 95 Times in 65 Posts
Default re map

Quote:
Originally Posted by Jamiewelch View Post
Maps depend on how much torque you want. The "160" map can produce around a 20% increase in peak torque. Or others offer a 50% increase in torque.

Torque is what you feel . Some people on here will say that a clutch can't handle the power, but it definitely can (providing it isn't already knackered).

See below image of a dyno printout achieving about the most torque you can get without smoke. To get more power a larger turbo needs to be fitted.

Thanks for sorting it today, my son Steve says the car is a beast, and I have to agree. More go than our last 2 litre v6, doesn't sing the same noise as a V6 on full throttle but really does go. Should have done this out of the factory when new!
Brunty is offline   Reply With Quote
Old 27th June 2022, 06:45   #18
COLVERT
This is my second home
 
R75 Saloon.

Join Date: Feb 2009
Location: France/or Devon.
Posts: 14,003
Thanks: 3,851
Thanked 2,167 Times in 1,816 Posts
Default

Quote:
Originally Posted by marinabrian View Post
:

On a serious note, I'd like you to calculate the maximum permissible torque transmission of a CDT clutch.

The figures are

A driven plate with external diameter of 228mm with a friction coefficient of 0.25

An axial clamping load of 1484 lb exerted by the pressure plate


No flim flam such as your clutch will be fine if it's ok, but if it's knackered it won't etc will be entertained, and your working out figures must be shown.

Brian
Wouldn't you need the the surface area of the friction plate and not just its diameter ??
COLVERT is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT. The time now is 21:06.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright © 2006-2023, The Rover 75 & MG ZT Owners Club Ltd