simonpa Posted March 4, 2015 Share Posted March 4, 2015 Well done! Link to comment Share on other sites More sharing options...
revilla Posted March 4, 2015 Share Posted March 4, 2015 Woop! Woop! So ... were you drilling too high in the end, as suggested by Charles?When I tried finding holes with a magnet I was gobsmacked how easy it was, and that was just with a weak fridge magnet that was too wide for the job. I bet with one of those little 4mm neodymium magnets it was a doddle. As you say, I think this should be the recommended way to it. Link to comment Share on other sites More sharing options...
Smithy77 Posted March 4, 2015 Author Share Posted March 4, 2015 Low Flying article???? Yeh, I was the best part of 10mm too high, which tallays spot on with the measurements from you and Charles. There is still about 2mm of aluminium panel between the old hole and the correct hole, but there was just about enough bracket coverage to hide everything. In terms of distance from the rear mount I was spot on with my trusty vinyl tape The thread of the boss was totally gunked up though and it was a real struggle to wind the bolt in. I was winding it in, got stuck, unwound, cleaned the thread of the bolt, sharp blow into the boss, cleaned with an old toothbrush as deep as it would reach, and repeated - each time getting a little bit further in. I still didn't get the bolt fully home before downing tools for the night. Anything I can do to make it easier.... WD-40 maybe? Or perhaps a cotton bud soaked in carb cleaner might do the trick.... Link to comment Share on other sites More sharing options...
revilla Posted March 4, 2015 Share Posted March 4, 2015 If it's really bad you might want to run a tap through it - I wouldn't do anything to risk stripping the thread out or you really will have a problem! Link to comment Share on other sites More sharing options...
simonpa Posted March 4, 2015 Share Posted March 4, 2015 buy some taps - you hardly ever use them, but they save sooooo much hassle when you do.. Link to comment Share on other sites More sharing options...
tweeky Posted March 4, 2015 Share Posted March 4, 2015 Cut 3 or 4 groves 90 degs to the bolt thread as deep as the thread pitch and use that as a make shift tap. the groves well give some where for the said gunk to fall in to. Use light oil or WD40 if you carnt get thead cutting compound.The main thing is go slowly you dont want to shear a bolt of worse a tap. Link to comment Share on other sites More sharing options...
TomB Posted March 4, 2015 Share Posted March 4, 2015 Have you a front mount on the silencer, or is that the next cutting/ welding challenge? Link to comment Share on other sites More sharing options...
Smithy77 Posted March 4, 2015 Author Share Posted March 4, 2015 I should be able to get my hands on a tap & die set so will do it properly, although the make shift tap idea is good to know.Tom, yes front exhaust bracket present.Cheers all Link to comment Share on other sites More sharing options...
DJ. Posted March 4, 2015 Share Posted March 4, 2015 Glad there is a happy ending And well done revilla! Link to comment Share on other sites More sharing options...
CharlesElliott Posted March 4, 2015 Share Posted March 4, 2015 Good news, and thanks for the follow up (again!) Link to comment Share on other sites More sharing options...
DaveMorris Posted March 4, 2015 Share Posted March 4, 2015 Smiffy, well done. I'm glad that you didn't remove the inner panel. I did on mine (and the lowered floow also) only to find that the front mount boss on my car does NOT NOT NOT go all the way thru the chassis rail. It is blind from the other side.I know that my boss is NOT 803mm from the rear one as I specifically requested Bruce, when he rebuilt the chassis, to put it in a different place. I have, of course, lost the paper/document where I wrote down the position. !!!!I am off to grab a fridge magnet immediately after finishing off this message - guess why :-)Dave Link to comment Share on other sites More sharing options...
Smithy77 Posted March 4, 2015 Author Share Posted March 4, 2015 Dave, I've got 10 of the little babies - I could stick a couple in the post If you like? Link to comment Share on other sites More sharing options...
DaveMorris Posted March 4, 2015 Share Posted March 4, 2015 Well, that was an hour well spent - NOT (as my kids would say). 3 different magnets tried, including one of those telescopic jobbies, and still not a clue.I know the boss is there - because I saw the chassis before it was clad.Smiffy - I will take you up on your generous offer (and if that fails I will cut off the front mount bracket from the exhaust system ).Dave. Link to comment Share on other sites More sharing options...
Gregs79 Posted May 31, 2015 Share Posted May 31, 2015 Great idea on the magent. :-) Link to comment Share on other sites More sharing options...
john milner Posted February 23, 2021 Share Posted February 23, 2021 If I have read the above correctly I should find the centre of the front boss 803mm from the centre of the rear and 17mm up from the underside. I have tried to confirm this with a variety of magnets including toys, fridge magnets and 1p sized neodymium. So far no confirmation as either all I get is a weak or strong pull according to the magnet strength. There is a horizontal lump of iron based metal at the expected height but nothing to indicate where horizontally a hole in it is. 803mm would mean a boss would line up somewhere between the silencer and cat. I may have to rely on an accurate measurement if I cannot get the magnet idea to work.The chassis is a 2003 SV. Should 803mm x 17mm be correct or have I read it wrong? Link to comment Share on other sites More sharing options...
SM25T Posted February 24, 2021 Share Posted February 24, 2021 Is 17mm up the same as the rear hole ? Link to comment Share on other sites More sharing options...
john milner Posted February 24, 2021 Share Posted February 24, 2021 The rear is either 17mm or very close. Link to comment Share on other sites More sharing options...
john milner Posted March 8, 2021 Share Posted March 8, 2021 803mm x 17mm turned out to be very close. 15mm might be perfect but not by enough to matter.The magnet method sort of worked but only to confirm that the measurements were correct. The magnetic pull or lack of around the hole was too small and imprecise to rely on on it's own. Link to comment Share on other sites More sharing options...
SM25T Posted March 8, 2021 Share Posted March 8, 2021 Good to hear 803 worked Link to comment Share on other sites More sharing options...
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