16v Mini Club Forums  

Go Back   16v Mini Club Forums > General Public Area > Rover Chat

Reply
 
Thread Tools Display Modes
Old 21-12-2017, 08:29 PM   #1
gadget555
Senior Member
 
Join Date: Jan 2011
Location: Strichen Aberdeenshire
Posts: 1,236
Subframe: Watson
CC: 1800
Make: Rover
ECU: K maps 160 Race
Default Cam belt tension?

I have fitted new cam belts and a water pump at the weekend and used the (Weak) spring to set the tension of the belt, but to me the belt is slack! as in I can get about half a twist in the belt on the long side. I was always told and shown to set the tension so you could get about 1/4 twist in the belt and that would be the right tension and with a little bit of force I can get the tension pulley to go to it's max adjustment which I know not to be right? What am I doing wrong? or do I use the spring to tension the belt even though to me it's a bit loose.

Gadget
gadget555 is offline   Reply With Quote
Old 22-12-2017, 08:37 AM   #2
gazwad
Senior Member
 
gazwad's Avatar
 
Join Date: Sep 2006
Location: northampton
Posts: 1,869
Subframe: Home Made
CC: 1796
Make: Rover
ECU: standard
Default

Auto tensioner or manual? With the manual (vvc and mems 1.9) I set it so you can get between 1/4 and half turn on the long side so it doesn't sound too far off. You don't want to overtighten it on the vvc engine as that can damage the bearings in the vvc mechanism.
gazwad is offline   Reply With Quote
Old 22-12-2017, 09:38 AM   #3
gadget555
Senior Member
 
Join Date: Jan 2011
Location: Strichen Aberdeenshire
Posts: 1,236
Subframe: Watson
CC: 1800
Make: Rover
ECU: K maps 160 Race
Default

This is the kit I bought it comes with the little spring for auto tensioning when you fit the new belt then remove it when it's all fitted. http://www.ebay.co.uk/itm/FOR-MG-MG-...72.m2749.l2649
Forgot to say mine mems3.
gadget555 is offline   Reply With Quote
Old 22-12-2017, 11:19 AM   #4
gazwad
Senior Member
 
gazwad's Avatar
 
Join Date: Sep 2006
Location: northampton
Posts: 1,869
Subframe: Home Made
CC: 1796
Make: Rover
ECU: standard
Default

That's actually a manual tensioner - all vvc engines (mems2 & mems3) are manual tensioner like that, it's just the Non-vvc mems 3 engines that use auto tensioner. The spring that comes with it is just supposed to help you set tension but it should still be set manually, personally I never use the spring as I find them to be inconsistant. I just set it manually so I get between 1/4 and 1/2 a turn (twist) on the longest straight bit then turn the engine over by hand a few times and re-check (I normally do this 3 or 4 times to be sure). If the belt is too tight it will whine when you start it up and will damage the vvc mechs.
gazwad is offline   Reply With Quote
Old 22-12-2017, 12:51 PM   #5
gadget555
Senior Member
 
Join Date: Jan 2011
Location: Strichen Aberdeenshire
Posts: 1,236
Subframe: Watson
CC: 1800
Make: Rover
ECU: K maps 160 Race
Default

Ah right I see what your saying now.
gadget555 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 10:45 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.