julian1 Posted April 16, 2018 Share Posted April 16, 2018 HiCan anyone confirm the correct bolts size to go into the main roll bar hoop from underneath (from near the top of the rear damper mount) please? Turns out mine are missing. 1999 imperial S3 - FIA single diagonal roll bar. ThanksJulian Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted April 16, 2018 Member Share Posted April 16, 2018 The Assembly Guide for my 1998 says 5/16" x 1".This discussion doesn't agree... 3/8" UNF or M10.And this discussion points out the same discrepancy and concludes 3/8" UNF.NB half thickness heads to give the clearance below.Jonathan Link to comment Share on other sites More sharing options...
Area Representative Richard Price Posted April 16, 2018 Area Representative Share Posted April 16, 2018 I'm fairly sure they are 3/8 UNF, but have the head machined thinner. Link to comment Share on other sites More sharing options...
julian1 Posted April 16, 2018 Author Share Posted April 16, 2018 Thanks Link to comment Share on other sites More sharing options...
simon_h Posted April 16, 2018 Share Posted April 16, 2018 You can get them from the usual suspects pre thinned and are then plated so they wont rust. Only a couple of quid each so not worth the effort of getting them machined yourself unless you happen to have a lathe I would say. Link to comment Share on other sites More sharing options...
Mechanical Moz Posted April 16, 2018 Share Posted April 16, 2018 Part number 79085FIA is what you need, also discovered mine were missing. Link to comment Share on other sites More sharing options...
julian1 Posted April 16, 2018 Author Share Posted April 16, 2018 Parts now ordered - thanks for your help Link to comment Share on other sites More sharing options...
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