|
||
|
22nd January 2017, 15:02 | #1 |
Newbie
MG ZT V8 Saloon Join Date: Jun 2015
Location: Walsall
Posts: 16
Thanks: 1
Thanked 3 Times in 3 Posts
|
Mg zt 190 timing
Hi
If the 190 timing has been messed with and the front pulley timed to that of a 177, is there a way to tell? And can it be correctly timed back up without removing the cam cover? Thanks |
22nd January 2017, 17:19 | #2 |
This is my second home
MG ZT260 SE, MG ZT190+, MG ZTT 160, R75 Conn SE 2.0, R75 Conn SE 2.5 X 3, R75 Club SE 1.8, P5B Coupe Join Date: Jul 2009
Location: Keynsham, Bristol
Posts: 4,211
Thanks: 65
Thanked 635 Times in 499 Posts
|
Engine noise & misfires I would imagine! (bent valves?)
The only way to adjust the vlave timing (with or without the proper tools) is to remove the belt covers etc. |
22nd January 2017, 21:43 | #3 |
Premium Trader
Rover 75 Join Date: Nov 2010
Location: Devon
Posts: 33,766
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
|
It will still run ok if it has been timed as a 180, it will just throw up an engine management light.
__________________
Lest we forget..
|
22nd January 2017, 22:01 | #4 | |
I really should get out more.......
MG ZT-T 260 Join Date: Feb 2016
Location: Witney
Posts: 2,504
Thanks: 6
Thanked 910 Times in 571 Posts
|
Quote:
The garage that did the job have since ceased trading. I tried to align the timing marks before I removed the old belt and it was clearly off, my guess at least one tooth but possibly 2. Anyway a new belt and correctly aligned and the car is now back to full health. |
|
22nd January 2017, 22:42 | #5 |
Premium Trader
Rover 75 Join Date: Nov 2010
Location: Devon
Posts: 33,766
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
|
Well on a 190 timed as a 180, it definitely throw up a light, I know as I had to recode the car to a 177 and the light went out
__________________
Lest we forget..
|
23rd January 2017, 08:18 | #6 |
This is my second home
MG ZT260 SE, MG ZT190+, MG ZTT 160, R75 Conn SE 2.0, R75 Conn SE 2.5 X 3, R75 Club SE 1.8, P5B Coupe Join Date: Jul 2009
Location: Keynsham, Bristol
Posts: 4,211
Thanks: 65
Thanked 635 Times in 499 Posts
|
I would expect the management light to be on but surprised no damage would occur?
Having said that, I've always used the correct tools when doing a belt change etc so couldn't really be sure what would happen! |
23rd January 2017, 09:59 | #7 |
Newbie
MG ZT V8 Saloon Join Date: Jun 2015
Location: Walsall
Posts: 16
Thanks: 1
Thanked 3 Times in 3 Posts
|
Thanks for replies chaps. My predicament:
190 made 167 on the rollers. Full service the day before including new vis motors and plugs. I'm baffled - either got to be a dodgy dyno or timing out? Engine/car feels healthy. Can I check if it's timed incorrectly? |
23rd January 2017, 10:23 | #8 |
This is my second home
Rover75 and Mreg Corsa. Join Date: Nov 2006
Location: Sumweer onat mote o'dust (Sagin)
Posts: 21,753
Thanks: 341
Thanked 3,660 Times in 2,924 Posts
|
Dynomometer measured power at the wheels is always lower than the power at the flywheel. I believe the '190' figure is the theoretical flywheel power. It seems to be at least 10% lower at the wheels and more with an automatic gearbox. And dynomometers do vary in cross referenced comparisons. A T4 session might reveal more indicators.
TC Last edited by T-Cut; 23rd January 2017 at 10:26.. |
23rd January 2017, 11:02 | #9 |
Newbie
MG ZT V8 Saloon Join Date: Jun 2015
Location: Walsall
Posts: 16
Thanks: 1
Thanked 3 Times in 3 Posts
|
Sorry t cut, should've been clearer...
167 was estimated/corrected crank power, 140 odd at wheels. Thanks |
23rd January 2017, 11:27 | #10 | |
Premium Trader
Rover 75 Join Date: Nov 2010
Location: Devon
Posts: 33,766
Thanks: 8,837
Thanked 14,831 Times in 8,030 Posts
|
Quote:
Check that one of the pulleys hasnt slipped one or two teeth, that seems very very low on bhp.
__________________
Lest we forget..
|
|
|
|