HoSS Posted May 2, 2021 Share Posted May 2, 2021 I need to fix my modified inlet manifold to the OM606, and the space is very limited. I cant use the standard MB torx bolts as theres no room to drive from above, and i can't use hex head as theres no diameter to get a spanner on. So have have come to the conclusion i need e-torx head. But trying to find that in M7 is like rocking horse poo (except in titanium which costs 10 quid each) Any ideas on suppliers? Quote Link to comment Share on other sites More sharing options...
landroversforever Posted May 2, 2021 Share Posted May 2, 2021 Reduced head hex might be easier to find? I forget their proper name. Quote Link to comment Share on other sites More sharing options...
landroversforever Posted May 2, 2021 Share Posted May 2, 2021 This type: https://raceboltuk.com/stainless-steel-c2/flanged-hex-head-bolts-c12/stainless-hex-head-bolt-m7-x-1-0mm-x-46mm-p26347/s31333?utm_source=google&utm_medium=cpc&utm_term=stainless-hex-head-bolt-m7-x-1-0mm-x-46mm-colour-silver-colour-silver-rb-sshx746&utm_campaign=product%2Blisting%2Bads&cid=GBP&gclid=CjwKCAjwm7mEBhBsEiwA_of-TDklXkN3KNZxqnIUACmUCfYQ_00NhjxDiX-tSVN0r7g3Jryos3lBmhoC-L8QAvD_BwE Would they work? Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 2, 2021 Author Share Posted May 2, 2021 might do, depends on flange diameter, looks more than a std hex. Also SS not the best thing into alu head, galvanic corrosion. But i'll expand my search into reduced head, thanks Found a BMW piece, but 11 Eur each Original BMW 11127558454 - [Super Price] Screw aussentorx M7X36 1er 3er 5e... | eBay Quote Link to comment Share on other sites More sharing options...
landroversforever Posted May 2, 2021 Share Posted May 2, 2021 Oxford Bearings are worth dropping a line to. They've found me some funky sized stuff for work. Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 2, 2021 Author Share Posted May 2, 2021 Hmm thats not terrible - 10 M 7 - 1.0 x 31mm 12 Point Flange 3 Piece Wheel Bolts | eBay if i can wait for delivery from US 1 Quote Link to comment Share on other sites More sharing options...
vulcan bomber Posted May 2, 2021 Share Posted May 2, 2021 Cap heads? 1 Quote Link to comment Share on other sites More sharing options...
landroversforever Posted May 2, 2021 Share Posted May 2, 2021 And if a cap head works... original bolts done up with a hex key type torx? Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 3, 2021 Author Share Posted May 3, 2021 No theres only about 20mm above the bolt, so no room for a key or socket, it needs something thats done up with a ring spanner, But not enough diameter to get a 9mm ring spanner on between the leaders. Its very tight. Has to be 12-point or e-torx. Quote Link to comment Share on other sites More sharing options...
Blanco Posted May 3, 2021 Share Posted May 3, 2021 Some here Quote Link to comment Share on other sites More sharing options...
landroversforever Posted May 3, 2021 Share Posted May 3, 2021 20mm would be plenty for a shortened hex key? Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 3, 2021 Author Share Posted May 3, 2021 7 minutes ago, landroversforever said: 20mm would be plenty for a shortened hex key? Considered that - but before the (25mm) bolt is driven in, theres virtually nothing, and with slight misalingnment/fricton its not easy to wind them in by fingers. The MB bolts i have are Torx and you cant shorten a Torx key. Will be far easier to use e-torx or 12-point, they are out there just a question of cost/lead time. 1 Quote Link to comment Share on other sites More sharing options...
elbekko Posted May 3, 2021 Share Posted May 3, 2021 1 hour ago, HoSS said: The MB bolts i have are Torx and you cant shorten a Torx key. Spoken like a man without a welder I have one of these, which might make it low profile enough: The bit goes directly into the ratchet, really allows you to get into tight spaces. Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 3, 2021 Author Share Posted May 3, 2021 Yes i bought that Wera 1/4" hex ratchet last week, its still too tall to work. Thanks for all of the ideas, but it will be far easier with e-torx or 12-point, since they do exist what i need is supplier suggestions. Racebolt have them (as above link from landroversforever) but only 8 in stock at the moment. Will back order or from US ebay supplier i found, Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 3, 2021 Author Share Posted May 3, 2021 Picture/1000words... You can maybe see what i mean, no way to drive from above. Quote Link to comment Share on other sites More sharing options...
steve b Posted May 3, 2021 Share Posted May 3, 2021 From the above pic , why not chop the driver bit at the lower edge of the yellow band and use a ratchet ring spanner on the remaining hex ? Steve 1 Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 3, 2021 Share Posted May 3, 2021 Feels to me that this is a situation where a stud is more suitable, then you can find nuts more easily: https://www.ebay.co.uk/itm/M7-Twelve-Sided-HEX-FLANGE-NUTS-10-ST-Chromed-Rims-Screw-/184642991298?_trksid=p2349624.m46890.l49286 Alternatively, drill out and shove an M8 tap down it, and then the bolt or stud world is your oyster. Quote Link to comment Share on other sites More sharing options...
zardos Posted May 3, 2021 Share Posted May 3, 2021 How about a better full shank Torx bit with an open ended 1/4 inch spanner I've use this before for tight spots This needs about 10mm of clearance to use as you can cut off the unneeded shank. Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 3, 2021 Author Share Posted May 3, 2021 3 hours ago, steve b said: From the above pic , why not chop the driver bit at the lower edge of the yellow band and use a ratchet ring spanner on the remaining hex ? Steve Considered that, but there are a few places where the diameter of the rachet end is too big, and again there still too little height before the bolt is driven. 2 hours ago, Bowie69 said: Feels to me that this is a situation where a stud is more suitable, then you can find nuts more easily: https://www.ebay.co.uk/itm/M7-Twelve-Sided-HEX-FLANGE-NUTS-10-ST-Chromed-Rims-Screw-/184642991298?_trksid=p2349624.m46890.l49286 Alternatively, drill out and shove an M8 tap down it, and then the bolt or stud world is your oyster. Yeah thats a possible, will look into it. Problem i suspect is that M7 nuts will be 9mm and the 9mm ring still too big dia to get between some of the leaders, hence why i wanted reduced head. 1 hour ago, zardos said: How about a better full shank Torx bit with an open ended 1/4 inch spanner I've use this before for tight spots This needs about 10mm of clearance to use as you can cut off the unneeded shank. Considered that, but the though of winding down 14 bolts 15 deg at a time with the bit constantly falling out didnt fill me with much enthusiasm. Plus open-ended too big dia. Could weld on into a 1/4" ring though. Thanks will investigate your ideas Zardos & Bowie Quote Link to comment Share on other sites More sharing options...
RedLineMike Posted May 3, 2021 Share Posted May 3, 2021 As a thought, just seen m7 bolts are a common fitment on BBS split rims , might be worth looking in that direction, Main thing is for the love of baby Jesus, say no to stainless #chromewontgetyouhome #saynotostainless Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 3, 2021 Author Share Posted May 3, 2021 7 minutes ago, RedLineMike said: As a thought, just seen m7 bolts are a common fitment on BBS split rims , might be worth looking in that direction, Yeah thats what i found in that link above, split rim bolts. Problem is i dont want stainless in the alu head, which leaves titanium at 10Eur a piece, and for some reason not widespread in europe. Quote Link to comment Share on other sites More sharing options...
HoSS Posted May 3, 2021 Author Share Posted May 3, 2021 Right that works, Bowie wins the beer. I'll cut the bolt heads off and turn them into studs. Nuts are 11mm AF and that ring-spanner goes in. 3 Quote Link to comment Share on other sites More sharing options...
landroversforever Posted May 3, 2021 Share Posted May 3, 2021 Different approach.... is there space above to drill through holes for the torx key to go through? Quote Link to comment Share on other sites More sharing options...
mickeyw Posted May 4, 2021 Share Posted May 4, 2021 18 hours ago, HoSS said: Picture/1000words... You can maybe see what i mean, no way to drive from above. A picture definitely helps. A very similar access issue can be found with a couple of the screws that secure the older type Rover V8 oil pump housing. That uses 1/4" UNC reduced head 12 pt screws. There is just about enough room to get in with a 5/16" ring spanner. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 4, 2021 Share Posted May 4, 2021 That driver is still way too fat - you need to chop about 5-6mm off the top of the bit and get a Naro driver that doesn’t have a huge plastic knob on the top, they're only about £10 and worth every penny - I've got about 3 of them now; 1 Quote Link to comment Share on other sites More sharing options...
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