belt worked before, now too short - Focus Fanatics
Ford Focus Forum
HomeContact UsAbout UsGalleryDiscussion ForumsMarketplace


Go Back   Focus Fanatics > Ford Focus Tech Discussions > General Technical Chat

General Technical Chat This section is for technical discussions relating to general maintenance, electrical issues, engine trouble, and recalls.

Search This Forum | Image Search | Advanced Search    
Ford Focus Tire & Wheels FocusFanatics Merchandise

Reply
 
Thread Tools Display Modes
Old 08-22-2014, 07:42 PM   #1
amc49
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 4,757
FF Reputation: 23 amc49 Great Standing Member
Buy-Sell-Trade Rating: (0)
belt worked before, now too short

Ran into an interesting problem today. Changed a tensioner from Gates to OEM Ford and suddenly, a belt which ran for a good long time is now too short and the tensioner is fully tapped out with the belt on, no swing left in it. Not only that, but the revised belt run angle then kisses the tensioner main post, meaning that if one attempted to drive the car the belt would shred in short order. Something is different between the two parts, and it's not the outside measurements, thinking it's in the clocking of the internal stops. The tensioner arm is NOT running at the angle it was before.

So now have to match the belt length to the tensioner, W...T...F...??!!

2.0 zetec


__________________
Fix the driver first, then fixing the car becomes so much easier.
amc49 is offline  
    Reply With Quote
Sponsored Links
Advertisement
 
Old 08-23-2014, 11:48 AM   #2
amc49
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 4,757
FF Reputation: 23 amc49 Great Standing Member
Buy-Sell-Trade Rating: (0)
Today put a rebuilt Dayco tensioner on and better, but I clearly have not been looking at the belt length matching to tensioner as close as I should have been. Still way off to one side but not on the limit any more. Correct length belt as called out in every parts book on the planet. Gonna go looking for a slightly longer belt............funny I should run into this now, I've had no trouble getting belts on in the past and looked this morn at the old ones (kept for emergency) and all are the exact same part number. Odd. Even the OEM belt is same length.

I did find that the tensioner swing total angle was greater on the Dayco part as vs. the Motorcraft. Probably where the extra room showed up. Design different as well, no center post to intrude on belt as it passes tensioner, regardless of angle.
__________________
Fix the driver first, then fixing the car becomes so much easier.
amc49 is offline  
    Reply With Quote
Old 08-23-2014, 12:42 PM   #3
shlbygt
Focus Enthusiast
 
Join Date: May 2005
Fan#: 23315
Location: SF Bay Area, CA
What I Drive: 04 SVT PWSC EAP

Posts: 234
FF Reputation: 5 shlbygt Good Standing Member
Buy-Sell-Trade Rating: (1)
Are you 100% certain the routing is correct?
I know there was more than one way to route a JRSC SVT belt that caused the belt to be short.
shlbygt is online now  
    Reply With Quote
Old 08-23-2014, 01:08 PM   #4
sailor
"Elder"
 
sailor's Avatar
 
Join Date: Jun 2008
Fan#: 57268
Location: Williamsville, NY
What I Drive: 2004 Pitch Black ZTS 2.3 5spd.

Posts: 13,264
FF Reputation: 67 sailor Excellent Standing Member
Buy-Sell-Trade Rating: (0)
He's sure all right, just the first time he's run into the belt/tensioner issue himself & posting it up for general info..

Brings up & confirms an issue that's baffled members in the past.
__________________
"Rubber Side Down"

S.R. #275
sailor is online now  
    Reply With Quote
Old 08-23-2014, 01:52 PM   #5
elsolo
Focus Fanatic
 
elsolo's Avatar
 
Join Date: Mar 2012
Fan#: 96835
Location: Long Beach, CA
What I Drive: 2003 dark shadow grey metallic ZX3

Posts: 2,172
FF Reputation: 17 elsolo Great Standing Member
Buy-Sell-Trade Rating: (1)
never mind, my error
__________________
2.3, home fabbed Mustang GT brakes, SVT suspension
67 Chevelle SS-496, owned since 1991

Last edited by elsolo; 08-23-2014 at 03:24 PM.
elsolo is offline  
    Reply With Quote
Old 08-23-2014, 06:38 PM   #6
amc49
Focus Fanatic
 
Join Date: Mar 2012
Fan#: 96610
Location: Fort Worth, TX
What I Drive: 00 wagon, 02 sedan both zetec atx

Posts: 4,757
FF Reputation: 23 amc49 Great Standing Member
Buy-Sell-Trade Rating: (0)
I note that at Rock Auto if you read between the lines there are at least 3 belts each about 1/4" different length from each other. 835, 837, 842, and you can forget using the stated belt lengths, Gates can't even quote them the same from master catalog to the belt cards themselves. Conflicting info everywhere there. Only way is to try them out. I got a 842, listed as anywhere from 83.4 to 84.7 outside inches depending where you look. They carry 840 and 841 at O'Reilly so more choice there. I went through this stuff back on the Contour zetec when the stated belt did not fit zetec E back when, I used a Focus belt to fit same identical engine. Ridiculous. I also note it almost seems if you buy someone's tensioner they want you to buy certain belt with it, how convenient for added sales.............but, no, that's gotta be me looking for conspiracies where none exist again..........


I saw your tensioner post as well elsolo...............
__________________
Fix the driver first, then fixing the car becomes so much easier.

Last edited by amc49; 08-24-2014 at 07:44 AM.
amc49 is offline  
    Reply With Quote
Reply

Bookmarks & Social Networks
-->
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 -5. The time now is 01:15 PM.


Copyright 2002-2014 FocusFanatics.com. All Rights Reserved : Terms of Use : Privacy Policy : Advertise Information

Focus Fanatics Ford Focus Forum offers many fun ways for you to engage with other Ford Focus Owners from across the world. Whether it be about the aftermarket performance modifications, technical how-to's, European tuned suspension or awesome fuel economy similar to the Acura TLX or Fiesta ST. You can find all Ford Focus and Focus ST related information here. Join our Ford Focus discussion forums and chat with local Focus enthusiasts in your area.