corsasport.co.uk
 

Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » Rear brake bias valve VS MOT


New Topic

New Poll
  Subscribe | Add to Favourites

You are not logged in and may not post or reply to messages. Please log in or create a new account or mail us about fixing an existing one - register@corsasport.co.uk

There are also many more features available when you are logged in such as private messages, buddy list, location services, post search and more.


Author Rear brake bias valve VS MOT
gavin18787
Premium Member

Avatar

Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
2nd Nov 07 at 10:44   View Garage View User's Profile U2U Member Reply With Quote

Whats the situation on these and MOT testing is it down to the discression of the tester?

As i need to get my car MOT'd this week and it doesnt have one in place as its lowered 60mm. Should I put the spring back in for the test or is it ok to leave it as it is? Its all secured up by zip ties at the moment.


Also if my car is burning oil will it pass the omissions? As i dont know what rpm they test them at. Isnt it fast idle and something else?


I feel a fail coming on


Drives supercharged Tec with torque
Dean_W
Member

Registered: 13th Dec 05
Location: Downham Market, Norfolk
User status: Offline
2nd Nov 07 at 10:55   View User's Profile U2U Member Reply With Quote

Bias valve - If it is applying enough force to the back wheels, then it should pass. Mine is slackened right off and it passed in Feb.

Not sure on the oil burning.
Superlite Ltd.
Member

Registered: 9th Jan 07
User status: Offline
2nd Nov 07 at 11:11   View User's Profile U2U Member Reply With Quote

burning oil will cause high HC and it will fail
Vaux Lad
Member

Registered: 15th Dec 04
Location: Stoke-on-Trent
User status: Offline
2nd Nov 07 at 11:32   View User's Profile U2U Member Reply With Quote

Depends how bad the oil burning is.
If the exhaust is smoking, that alone can be a failure.

They do a natural idle speed test(800-1200rpm range), usually about 900.
And a fast idle which is 2500-3000rpm iirc.
AK
Member

Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
2nd Nov 07 at 11:41   View User's Profile U2U Member Reply With Quote

FAIL - emmisions
gavin18787
Premium Member

Avatar

Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
2nd Nov 07 at 11:57   View Garage View User's Profile U2U Member Reply With Quote

Slag


Piston rings are getting fitted next weekend but by this time it will have no mot, where would I stand driving it back from where the rings are been fitted to the MOT station?

Burns oil all the time but only smokes noticably above 4k rpm.


Drives supercharged Tec with torque
lil_g
Member

Registered: 29th Oct 06
User status: Offline
2nd Nov 07 at 12:26   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by gavin18787
Slag


Piston rings are getting fitted next weekend but by this time it will have no mot, where would I stand driving it back from where the rings are been fitted to the MOT station?

Burns oil all the time but only smokes noticably above 4k rpm.


IIRC you can legally drive your car to a pre-booked MOT session
Dave A
USER UNDER INVESTIGATION - DO NOT TRADE

Registered: 10th Dec 03
Location: County Durham
User status: Offline
2nd Nov 07 at 12:31   View User's Profile U2U Member Reply With Quote

brake bias valve will fail if its held up with cable ties. mine did. I argued the point that the car was far safer and stable under braking and with it fixed in the normal position the rear brakes lock up dangerously. I was given a pass with a condition that I construct a proper bracket.
Steve
Premium Member

Avatar

Registered: 30th Mar 02
Location: Worcestershire Drives: Defender
User status: Offline
2nd Nov 07 at 14:49   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by gavin18787
Whats the situation on these and MOT testing is it down to the discression of the tester?

As i need to get my car MOT'd this week and it doesnt have one in place as its lowered 60mm. Should I put the spring back in for the test or is it ok to leave it as it is? Its all secured up by zip ties at the moment.


Also if my car is burning oil will it pass the omissions? As i dont know what rpm they test them at. Isnt it fast idle and something else?


I feel a fail coming on


you will FAIL on your spelling
gavin18787
Premium Member

Avatar

Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
2nd Nov 07 at 16:18   View Garage View User's Profile U2U Member Reply With Quote

Feck off


Drives supercharged Tec with torque
gavin18787
Premium Member

Avatar

Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
2nd Nov 07 at 16:19   View Garage View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Dave A
brake bias valve will fail if its held up with cable ties. mine did. I argued the point that the car was far safer and stable under braking and with it fixed in the normal position the rear brakes lock up dangerously. I was given a pass with a condition that I construct a proper bracket.



This was my thinking, might just take the spring in and put it in if they argue


Drives supercharged Tec with torque
tom_simes
Show Staff
Organiser: South Wales
Premium Member


Avatar

Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
User status: Offline
2nd Nov 07 at 16:38   View Garage View User's Profile U2U Member Reply With Quote

Mine passed in August, without the spring in it . Rear brakes still work fine, still locks up but is no longer tail-happy
gavin18787
Premium Member

Avatar

Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
2nd Nov 07 at 16:56   View Garage View User's Profile U2U Member Reply With Quote

Well mine drives fine, brakes well and i have never had it lock up.
I assume it would just maybe fail out of the principle that it should be there..........


Drives supercharged Tec with torque
tom_simes
Show Staff
Organiser: South Wales
Premium Member


Avatar

Registered: 12th Jan 05
Location: Undy, Newport Drives: Skoda Octavia vRS estate
User status: Offline
2nd Nov 07 at 17:02   View Garage View User's Profile U2U Member Reply With Quote

Well the tester failed mine on frayed handbrake cables, which I then replaced and it then passed.

I'm assuming that as he told me both cables were frayed (and they were - quite badly), he must have had a good look around that area.

I loosened the bias valve around May, and didn't notice it was missing myself until I went to fit the new handbrake cables, so may have driven for nearly 4 months without one
gavin18787
Premium Member

Avatar

Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
2nd Nov 07 at 18:13   View Garage View User's Profile U2U Member Reply With Quote

I think I will fit the spring to be on the safe side

Or can they fail it for incorrect brake bias


Drives supercharged Tec with torque
gavin18787
Premium Member

Avatar

Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
3rd Nov 07 at 16:39   View Garage View User's Profile U2U Member Reply With Quote

Get in!!!! PASS


Fitted the bias spring before I took it in. Tested the brakes on the way home and it was like i had applied the handbrake so ive taken it back off now


Emssions it passed I just made sure it was nice and hot when i got there as the fan was kicking in etc and luckily they tested it straight away. Was well within the limits anyway


Got one adbisory though was for a corroded chasis rail. Whats the best cure for this a clean up and some hammerite or something. As it doesnt look too bad


Drives supercharged Tec with torque
Simon_16v
Member

Registered: 14th Aug 06
Location: Yorkshire
User status: Offline
3rd Nov 07 at 16:51   View User's Profile U2U Member Reply With Quote

Iv been told my chassis rails are starting to corrode and i'd need them seam welding up. But that was from a backstreet garage that proabably wanted them to do the work.
jr
Member

Registered: 20th May 02
Location: Kent
User status: Offline
3rd Nov 07 at 17:02   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by gavin18787
Get in!!!! PASS


Fitted the bias spring before I took it in. Tested the brakes on the way home and it was like i had applied the handbrake so ive taken it back off now


Emssions it passed I just made sure it was nice and hot when i got there as the fan was kicking in etc and luckily they tested it straight away. Was well within the limits anyway


Got one adbisory though was for a corroded chasis rail. Whats the best cure for this a clean up and some hammerite or something. As it doesnt look too bad


clean up, weld, waxoil
gavin18787
Premium Member

Avatar

Registered: 22nd Feb 05
Location: Basildon, Essex
User status: Offline
3rd Nov 07 at 17:17   View Garage View User's Profile U2U Member Reply With Quote

At the risk of sounding like an arse is the chassis rail the one that you see when you take off the jacking point covers on the side skirts where the jack goes?


Drives supercharged Tec with torque

 
New Topic

New Poll

  Related Threads Author Forum Replies Views Last Post
lowering=bad braking? Mikorsa16v Help Zone, Modification and ICE Advice 20 1427
16th Apr 03 at 14:06
by Mikorsa16v
 
Rear drums brakes locking up corsa1.2red Help Zone, Modification and ICE Advice 21 1454
21st Aug 06 at 19:11
by csweatherston
 
V6 calipers and brake bias valve DP. Help Zone, Modification and ICE Advice 23 534
13th Nov 04 at 00:07
by DP.
 
rear disk conversion goodfellow Help Zone, Modification and ICE Advice 7 1885
1st Jul 05 at 18:58
by M2RV H
 
Does make a difference stripping the rear out. Jenko_Sport General Chat 240 6102
25th Feb 08 at 23:42
by Robin
 

Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » Rear brake bias valve VS MOT 28 database queries in 0.0134141 seconds