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S40 / V40 '96-'04 General Forum for the Volvo S40 and V40 (Classic) Series from 1995-2004. |
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"Rounded-off" boltsViews : 1524 Replies : 20Users Viewing This Thread : |
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Aug 25th, 2017, 17:07 | #11 |
Ancient
Last Online: Apr 23rd, 2024 20:31
Join Date: May 2012
Location: chesterfield
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It's not just the DIY mechanic, i've seen some pretty horrendous stuff done by main dealers !
I was recentely asked to look at a citroen because it smelled of petrol and had a new engine fitted by a main dealer. The fuel leak was because the fuel supply pipe connector to the fuel rail was a bit knackered instead of renewing it, they had secured it using a cable tie, there were also several important bolts around the engine bay that weren't tightened properly, as well as the clutch dragging ! Although i could have sorted it for them, i gave them a list of the problems & told them to get the main dealer to tow it back in, & if that they proved to be difficult,... just mention trading standard. After a bit of hassle & fobbing off ..it was eventually sorted. |
Aug 26th, 2017, 00:02 | #12 | |
Non Fragile
Last Online: Oct 13th, 2023 05:46
Join Date: Apr 2010
Location: Chadderton, Oldham
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Quote:
Are they actually stretch torque? I know they have a torque specification, and I know that some bolts are designed to stretch once and only once. I'm not convinced that's true of caliper bolts though. I think you can take things a bit too seriously. I've driven hundreds of thousands of miles for decades and not a single caliper bolt has ever worked loose on me, in fact quite the opposite - they're always tough to get out. And I've not used loctite on any of them. Ever. Then again, I also hear scare stories about brakes being soft for bedding in - which I am firmly convinced is a complete myth. I'm sorry, but I refuse to belive that brand new cars coming out of the factory with brand new discs and pads have inferior brakes which couldn't pass an MOT until they've "bedded in" - bollocks. Pure bollocks. No such phenomenon exists. When I fix my brakes, they work. Full stop. But I'm almost certain someone will come along with a "well, i knew a bloke once who" story soon enough. |
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Aug 26th, 2017, 20:21 | #13 |
New Member
Last Online: Aug 18th, 2022 09:50
Join Date: Sep 2014
Location: Derby
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Then again, I also hear scare stories about brakes being soft for bedding in - which I am firmly convinced is a complete myth. I'm sorry, but I refuse to belive that brand new cars coming out of the factory with brand new discs and pads have inferior brakes which couldn't pass an MOT until they've "bedded in" - bollocks. Pure bollocks. No such phenomenon exists. When I fix my brakes, they work. Full stop. But I'm almost certain someone will come along with a "well, i knew a bloke once who" story soon enough.[/QUOTE]
It's not that the brakes will have less performance, more that they will be easier to overheat under prolonged heavy braking. A brand new disc isn't completely smooth, & a brand new pad isn't completely flat. Take a look at a new disc after it's done say, 30 miles, & you will see where the pad surface doesn't make contact yet. |
Sep 2nd, 2017, 21:59 | #14 | |
Member
Last Online: Sep 19th, 2020 14:38
Join Date: Feb 2016
Location: Ongar
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Quote:
For the ease of ordering and fact they're going to be the right ones I'll order them before I do the rear brakes. Five quid over a couple of years is pretty cheap 😀 Wouldn't go main dealer for things like cam belt and water pump kit though, needed a sit down after asking how much that was!! About four times the cost of a Gates kit. 😱
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04 S40 saloon 1.9D. Let's see how long it lasts...... '53 plate V40 2.0s petrol estate. Stolen, now dead. |
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Sep 2nd, 2017, 23:45 | #15 |
Ancient
Last Online: Apr 23rd, 2024 20:31
Join Date: May 2012
Location: chesterfield
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There seems to be some confusion in this thread between the larger caliper bracket/pad carrier mounting bolts & the smaller guide pin bolts.
The guide pin bolts are sometimes included with new pads, but the large caliper bracket bolts are most likely dealer only ! |
Sep 8th, 2017, 21:10 | #16 |
Senior Member
Last Online: Apr 1st, 2018 08:04
Join Date: Apr 2010
Location: Edinburgh MK Northampton Rugby Coventry Glasgow
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Hi I havent done much diy on my car recently - but I did manage to get stuck caliper bolts off with Irwins extractors and also i found the volvo nuts and bolts quite inexpensive and agree these are once use only as far as I can tell, felt safer doing it this way .
Was quite pleased with my work.
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Volvo s40 2.0 cd petrol b4204s 1999 |
Sep 8th, 2017, 21:36 | #17 |
Premier Member
Last Online: Apr 2nd, 2021 21:13
Join Date: May 2006
Location: Stockport
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Brian Pope in Stockport is the best place in the N.W. in my opinion. Walked in the other day and got a 3/8 whitworth bolt with an allen key drive off the shelf!
Set of Irwin sockets often solves the problem of rounded bolts. Salut! Pookie
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Sep 9th, 2017, 14:02 | #18 | |
Premier Member
Last Online: Yesterday 21:26
Join Date: Aug 2009
Location: birmingham
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Quote:
"but a bolt is a bolt" plays a part boils down to the same thing,, people Dont know ,, or if they do dont care. yes its a cost to use new stretch bolts each time and possibly the old bolts "might" be ok,, it might be ok to use some random bolt with a tensile strength of "unknown" .. "best practice" + "Known safe" V cost / not knowing ,,,,,and peeps wonder Why when they get a new to them 2nd hand car they have issues and "OH" things to sort out to get it back to "known good and known safe" personal pov "don't know/don't care/don't care they don't know" is a major social issue that causes a metric fkton of problems for OTHERS ,,
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940s - 2l / 92 < gone&missed s401.8 xs auto <gone >V50 2.4SE Geartronic aka "the new money pit" "skyship007 has now been successfully added to your ignore list. "." |
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Sep 10th, 2017, 15:17 | #19 |
V40 Owner
Last Online: Dec 13th, 2020 01:28
Join Date: Aug 2006
Location: Tonyrefail, Souh Wales.
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I got a set from eurocrapy parts for ?under £5?
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Sep 10th, 2017, 16:03 | #20 |
Non Fragile
Last Online: Oct 13th, 2023 05:46
Join Date: Apr 2010
Location: Chadderton, Oldham
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Who doesn't know? Actually, I do. I've just re-read the Haynes manual, these are NOT stretch bolts, they do NOT have a stretch torque, and renewel is NOT required unless they are "showing signs of obvious wear". The torque specification is unambiguously stated at 41 lb/ft for rear, 74 lb/ft for front, nothing else. Stretch torque specs would be something like wait 5 mins turn by 90°.
You presume my incompetence because it is you who doesn't know. You presume these bolts are stretch/single use because you don't know. The lack of citation confirms this. These are not stretch bolts. They are standard automotive bolts, and providing sufficient grasp can be made upon them to deliver the specified torque, that is all they need. Confirmed both in print and in decades of personal experience. And boom! Another myth busted. You're welcome. |
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