Printable Version | Subscribe | Add to Favourites
New Topic New Poll New Reply
Author: Subject: Uno brake bias valve
DaveFJ

posted on 24/1/05 at 05:35 PM Reply With Quote
Uno brake bias valve

Just done a search and can't find the relevant thread, can anyone point me in the direction of how to plumb in and do the neccessary alterations to my newly aquired fiat Uno brake bias valve?

cheers





Dave

"In Support of Help the Heroes" - Always

View User's Profile Visit User's Homepage View All Posts By User U2U Member
nick205

posted on 24/1/05 at 06:30 PM Reply With Quote
I made a steel bracket to fit the valve to the footwell bulkhead. The bracket has an adjustable bolt which limits the travel of the bias valves plunger (it rises with pressure). The rear brake line from the master cylinder is then routed through the valve into the lower union and out of the top union.

Hopefully the pictures will make this clearer.... Rescued attachment 031219-07.jpg
Rescued attachment 031219-07.jpg







View User's Profile View All Posts By User U2U Member
nick205

posted on 24/1/05 at 06:30 PM Reply With Quote
and another.... Rescued attachment 2.JPG
Rescued attachment 2.JPG







View User's Profile View All Posts By User U2U Member
Mark Allanson

posted on 24/1/05 at 07:07 PM Reply With Quote
variation on the same theme Rescued attachment BrakePedals&Cylinder.JPG
Rescued attachment BrakePedals&Cylinder.JPG






If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation

View User's Profile Visit User's Homepage View All Posts By User U2U Member
bob

posted on 24/1/05 at 07:18 PM Reply With Quote
And again Rescued attachment MK Indy build pics 081.jpg
Rescued attachment MK Indy build pics 081.jpg







View User's Profile View All Posts By User U2U Member
craig1410

posted on 24/1/05 at 10:11 PM Reply With Quote
Hi,
I've done something similar as well and would like to add an important point.

For SVA remember to lock up the adjustment bolt. A split pin or lock nut is not considered suitable so you need to either tack weld it or use a roll pin. This is explicitly permitted provided the roll pin is fitted properly.

For what it's worth I fitted my bias valve above the diff against the seat back panel.

Cheers,
Craig.

View User's Profile Visit User's Homepage View All Posts By User U2U Member
DaveFJ

posted on 24/1/05 at 10:25 PM Reply With Quote
thanks all, as ever a picture paints a thousand words...







Dave

"In Support of Help the Heroes" - Always

View User's Profile Visit User's Homepage View All Posts By User U2U Member
bob

posted on 24/1/05 at 10:36 PM Reply With Quote
As most end up taking the retest at SVA i went through with no adjuster on my valve,i thought i would set it at the test and throw a weld on it or pin it after.
As luck would have it the brakes were fine with no adjuster (M8 bolt) the examiner and his examiner scratched there heads a bit but after a brief meeting they decided it was ok

for the record i have the regular sierra/granada rear calipers and the uno valve was bolted on with a 13mm gap between the push rod and the top of the holderalso the top of the push rod is cut flat.

hope this helps.

Also just to make things worst,an indy went through SVA at Beverley with rear discs and no reduction valve according to snoopy at MK.






View User's Profile View All Posts By User U2U Member
Ben_Copeland

posted on 25/1/05 at 09:41 AM Reply With Quote
Have any of you found that when you hit the brakes the bracket holding your adjuster flexs as the valve pushes against it? Had to strengthen mine, tho seeing all the neat ones on here i might redo mine cos it's ugly!





Ben

Locost Map on Google Maps


Z20LET Astra Turbo, into a Haynes Roadster

Enter Your Details Here
http://www.facebook.com/EquinoxProducts for all your bodywork needs!

View User's Profile View All Posts By User U2U Member
jps

posted on 28/3/19 at 10:37 AM Reply With Quote
Ancient thread revival I know - but are the Uno brake bias valves in any way still useable for IVA? Or is there a current alternative? I'm running discs all round - and a single M/c setup so already expect to have problems with rears locking first
View User's Profile Visit User's Homepage View All Posts By User U2U Member
Charlie_Zetec

posted on 28/3/19 at 12:04 PM Reply With Quote
Last I heard brake bias valves were still permitted for IVA - as long as they were locked/lockable and unable to come loose.

I see no reason why something like THIS wouldn't be acceptable, assuming it was fixed with a roll pin, lock wire etc. - after all, that's what usually holds the balance bar in position on dual M/C pedal box setups....

Lets wait and see if anyone has recently passed IVA with a similar setup, or you could take a punt and call the local IVA centre and ask for their perspective on the issue? Just remember to get a name or ideally something in writing, as I suspect you'll get different answers on different days from different people!





Artificial intelligence is no match for natural stupidity!

View User's Profile View All Posts By User U2U Member
Schrodinger

posted on 28/3/19 at 06:29 PM Reply With Quote
I passed the IVA with a twin cylinder bias setup and a sticker from CBS that says something to the effect that adjusting the bias may lead to the car no longer meeting regulations and that was acceptable, try contacting the centre where you are taking your test and ask their view.





Keith
Aviemore

View User's Profile E-Mail User View All Posts By User U2U Member

New Topic New Poll New Reply


go to top






Website design and SEO by Studio Montage

All content © 2001-16 LocostBuilders. Reproduction prohibited
Opinions expressed in public posts are those of the author and do not necessarily represent
the views of other users or any member of the LocostBuilders team.
Running XMB 1.8 Partagium [© 2002 XMB Group] on Apache under CentOS Linux
Founded, built and operated by ChrisW.