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24th May 2010, 11:14 | #1 |
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Rover 75 2.0 v6 connie SE Join Date: May 2010
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Balance VIS problem
Does the butterfly go back in to the manifold in the open or closed position or does it matter it's just i am trying to line up my worm gear wheel and can't seem to line it all up.
Does anyone have a picture of the proper position of the worm wheel thing? Steve |
24th May 2010, 13:09 | #2 |
same car since 2005
2001 Rover 75 2.0 v6 Connoisseur Saloon Join Date: Nov 2006
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lots of previous posts on this . This one may be of help
http://www.the75andztclub.co.uk/foru...ht=balance+vis
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26th May 2010, 21:43 | #3 |
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Rover 75 Connie SE Tourer Triumph Street Triple R Join Date: Aug 2009
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It goes back in the OPEN position, as it is open at engine start up and idle up to about 3,100 rpm.
You may need to 'reset' your bal vis by pluging in vis before attaching to the plenum and activating by turning on the ignition. This will reset a 'good' vis motor to its starting position. Same routine for the power vis too.
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26th May 2010, 21:54 | #4 | |
I really should get out more.......
75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010
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Quote:
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26th May 2010, 22:01 | #5 |
Vis Whiz
Rover 75 2.5 auto Saloon Join Date: Jun 2007
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Look on the back of the balance motor just around where the oblong shaft goes through. you will see a 90° arc on the plastic. Then look in the shaft that has the oblong slot in it. You will see a small arrow. As long as the arrow is within the arc then that is correct. When you turn the ign on the VIS will reset to hold the balance flap open at rest
HTH
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26th May 2010, 22:16 | #6 |
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Rover 75 FaceLift Tourer CDTi 170BHP Auto ConnSE 2005 Model Starlight Silver Join Date: Nov 2006
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My ongoing Project is going to need both VIS motors repairing replacing.
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26th May 2010, 22:27 | #7 |
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Rover 75 2.0 v6 connie SE Join Date: May 2010
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HI
Thanks for the replies yes i positioned the wheel so the arrow was pointing in the middle of the arc and the butterfly was partialy open. If i remember on the cogged wheel when i replaced the cover, there was a chunky bit of plastic that protruded out from the cogged wheel in the vis, and that was sitting between the 2 white microswitch buttons. Would that be the correct position? Steve |
26th May 2010, 22:42 | #8 | |
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Rover 75 Connie SE Tourer Triumph Street Triple R Join Date: Aug 2009
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Quote:
Recently tried my new vis 'off' the plenum, attached to the butterfly (old duff vis still installed!!) and gassed the engine to actually see the butterfly close and then re open as low rpm resumed. lots of confusion around but this is fact!! Closes at higher rpm to shorten tract length to increase torque (runs as 2 x 3 cyl engines as regards air intake) The use of the word 'balance' is a bit vague! Its open or closed, not somewhere inbetween. Some members find there bal vis open about 5 mm,,, this is a knackered vis!! as the motor has failed due to a stiff butterfly between 5mm and completely closed. Common remedy is to shave the butterfly around the center pivot to 'ease' the operation of the flap, then repair or replace the vis.
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Real walnut interior. Original refurbished Forked Spokes 16” with Michelin Primacy 4 rubber, Pioneer AVH-Z9200DAB double din Wi Fi phone integration. Retrofitted twin front horns. 160 re-map. Revotec fan. Silicone intercooler hoses and ‘O ring’ replacement. Top hose thermostat. New walnut and smokestone steering wheel with cruise upgrade. Brembo Brakes. Ceramic coated rear Exhaust. L/engine mount, Hydramount, Bosch MAF. Focal Access Drivers and Focal Amp. |
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26th May 2010, 22:46 | #9 | |
Posted a thing or two
Rover 75 Connie SE Tourer Triumph Street Triple R Join Date: Aug 2009
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all the best
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Real walnut interior. Original refurbished Forked Spokes 16” with Michelin Primacy 4 rubber, Pioneer AVH-Z9200DAB double din Wi Fi phone integration. Retrofitted twin front horns. 160 re-map. Revotec fan. Silicone intercooler hoses and ‘O ring’ replacement. Top hose thermostat. New walnut and smokestone steering wheel with cruise upgrade. Brembo Brakes. Ceramic coated rear Exhaust. L/engine mount, Hydramount, Bosch MAF. Focal Access Drivers and Focal Amp. |
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26th May 2010, 23:09 | #10 |
I really should get out more.......
75 tourer cdti, MG ZS 180, nissan terrano & 1.8t rover 25 Join Date: Feb 2010
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thanks for clearing that up, seems a bit backward but nothing to do with these types of components is ever straign forward
sorry for the mini hijack, but when the engine speed increaces under load, the power vis operates obviously operates and opens the butterflies in the manifold, but does the balance stay open, or does it close as the power set open? or do the all stay open untill a set rpm when all close |
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