tortron Posted March 17, 2019 Share Posted March 17, 2019 any issues around using a centering ring to help mount a brake rotor with an 88mm centre hole on a hub with an 84mm centre hole? I see they are used on vws with audi big brake conversions overseas and it sounds better to me than relying entirely on the bolts also on a similar topic. Are there any requirements when it comes to redrilling the mounting holes in a brake rotor? is it legal? 1 Quote Link to comment Share on other sites More sharing options...
Yowzer Posted March 17, 2019 Share Posted March 17, 2019 I believe centering rings are required, and you can't redrill from 4 to 5 stud or vice versa, but redrilling the same stud count is ok. I think. Quote Link to comment Share on other sites More sharing options...
cletus Posted March 17, 2019 Share Posted March 17, 2019 On 14/03/2019 at 16:47, Roman said: Question re: pedal boxes. I had a bit of a manlook but couldnt find any threads about it. What's legal or not legal? I think I remember seeing something about not being allowed to weld the pedals or they have to be all one piece. But what other rules are there around what you can/cant do, and what materials can be used and so on? I had a look through the cert manual thing about rules for brakes but couldnt find any specific info about pedal box construction. its a lot easier to buy a wilwood/tilton/ap pedal box in my opinion the rules are a bit tricky to find because they are not all in the same place. are you wanting to make your own? Quote Link to comment Share on other sites More sharing options...
cletus Posted March 17, 2019 Share Posted March 17, 2019 On 16/03/2019 at 11:18, Sambo said: Are there any rules regarding winding down torsion bars? I'm not wanting to go really low or anything, more just curious. Is it basically just stay above 100mm? pretty much, should also have enough travel with un modified bump stops Quote Link to comment Share on other sites More sharing options...
cletus Posted March 17, 2019 Share Posted March 17, 2019 3 hours ago, tortron said: any issues around using a centering ring to help mount a brake rotor with an 88mm centre hole on a hub with an 84mm centre hole? I see they are used on vws with audi big brake conversions overseas and it sounds better to me than relying entirely on the bolts also on a similar topic. Are there any requirements when it comes to redrilling the mounting holes in a brake rotor? is it legal? definitely a good idea to use centering spacer. there was a q&a thing on the lvv website which said you couldn't redrill a 4 stud disc to 5 stud or vice versa, but have had a few brake kits approved like that where the holes were pretty close together, but then had a plate over the extra holes so the whole thing was sandwiched together a lot of the MRP brake kits come with multi drilled discs 1 Quote Link to comment Share on other sites More sharing options...
flyingbrick Posted March 17, 2019 Share Posted March 17, 2019 I'm amazed by that- wouldn't have thought it was possible to destroy a discs integrity that much by drilling a couple of holes. Will be upset if that is my rear end fucked, ford discs re drilled to chev, multi drilled axles etc etc Quote Link to comment Share on other sites More sharing options...
M.H. Posted March 17, 2019 Share Posted March 17, 2019 The rotors on my Audi's had 10 holes in them factory Quote Link to comment Share on other sites More sharing options...
Popular Post KustomKreeps Posted March 18, 2019 Popular Post Share Posted March 18, 2019 hey quick question on the cert rules for roof chops. How much are you aloud to chop basically? Missus brought home a Morrie Minor split window. Wanting to make a nice lil shopping car basically but with a old custom vibe. Thinking 4 or 5 inch off the front and what ever looks good off the back. then a heap of panel work such as fade-away fenders and skirts. Sat in a 4' chop with lowered seats and was looking out mid screen (missus below middle of screen) and had heap of headspace. 11 Quote Link to comment Share on other sites More sharing options...
1vaknd Posted March 18, 2019 Share Posted March 18, 2019 is there a layout to follow when it comes to doing the design approval process, I have three things that will need to go through this process(rear knuckles, rear subframe and front LCA's) I have the basics of the knuckle drawn in cad that still needs a little work before its completed, the LCA's I could probably draw up but the rear subframe is way to technical for my skills. obviously have to supply information on welding processes lastly should i get NDT done before or after as all are made already and happy to add/change if requested Quote Link to comment Share on other sites More sharing options...
M.H. Posted March 19, 2019 Share Posted March 19, 2019 Are there any regulations around exhaust brakes? The isuzu engine im fitting in my discovery has one and was thinking about keeping it, would come in handy when towing heavy loads 1 Quote Link to comment Share on other sites More sharing options...
Adoom Posted March 19, 2019 Share Posted March 19, 2019 I need to make some wheel location rings. What materials are acceptable. The diameter on the hub is too small for the wheel spacers and for the wheel center hole. Quote Link to comment Share on other sites More sharing options...
spiderwebfx Posted March 19, 2019 Share Posted March 19, 2019 1 hour ago, Adoom said: I need to make some wheel location rings. What materials are acceptable. The diameter on the hub is too small for the wheel spacers and for the wheel center hole. Most ones supplied by the retailers selling aftermarket wheels are plastic. Some are alloy but very few. Why not try ringing a local wheel shop with the ID of the wheels, ID of the spacers, and the OD's of the spigots, and see if you can just buy them. They're normally only $7-$8 each anyway. If you don't feel like calling, PM me your measurements and I can ring and ask tomorrow for you 2 Quote Link to comment Share on other sites More sharing options...
cletus Posted March 19, 2019 Share Posted March 19, 2019 15 hours ago, 1vaknd said: is there a layout to follow when it comes to doing the design approval process, I have three things that will need to go through this process(rear knuckles, rear subframe and front LCA's) I have the basics of the knuckle drawn in cad that still needs a little work before its completed, the LCA's I could probably draw up but the rear subframe is way to technical for my skills. obviously have to supply information on welding processes lastly should i get NDT done before or after as all are made already and happy to add/change if requested probably hold off on NDT till its been thru TAC how to fill out a design approval- https://www.lvvta.org.nz/documents/infosheets/LVVTA_Info_01_2016_LVV_Custom_Independent_Front_and_Rear_Suspension_Approval_Application_Guide.pdf 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted March 19, 2019 Share Posted March 19, 2019 2 hours ago, 00quattro00 said: Are there any regulations around exhaust brakes? The isuzu engine im fitting in my discovery has one and was thinking about keeping it, would come in handy when towing heavy loads nope nothing about exhaust brakes, the only semi relevant thing is adjustable exhaust noise flaps/things like that that adjust exhaust volume are not allowed- but I think if the exhaust is not loud with the exhaust brake off or open, should be ok 1 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted March 19, 2019 Share Posted March 19, 2019 2 hours ago, Adoom said: I need to make some wheel location rings. What materials are acceptable. The diameter on the hub is too small for the wheel spacers and for the wheel center hole. steel or alloy, the plastic ones would not be acceptable with a spacer, unless the hub spigot sticks out far enough to locate the wheel properly Quote Link to comment Share on other sites More sharing options...
1vaknd Posted March 19, 2019 Share Posted March 19, 2019 7 minutes ago, cletus said: https://www.lvvta.org.nz/documents/infosheets/LVVTA_Info_01_2016_LVV_Custom_Independent_Front_and_Rear_Suspension_Approval_Application_Guide.pdf yeah, thats going to be fun Quote Link to comment Share on other sites More sharing options...
Adoom Posted March 19, 2019 Share Posted March 19, 2019 47 minutes ago, cletus said: steel or alloy, the plastic ones would not be acceptable with a spacer, unless the hub spigot sticks out far enough to locate the wheel properly I just went and had a measure. It would need to be super skinny, with a step in it. Could I machine down the diameter of the hub spigot and press on a steel sleeve to make the spigot taller, and a more better diameter? Maybe 70mm and extend it right into the wheel, so I could just stack two spacers? Here are the measurements I took. Note: the taper on the hub spigot is part of the casting, so it's not uniform. Quote Link to comment Share on other sites More sharing options...
Nominal Posted March 19, 2019 Share Posted March 19, 2019 1 hour ago, Adoom said: I just went and had a measure. It would need to be super skinny, with a step in it. Could I machine down the diameter of the hub spigot and press on a steel sleeve to make the spigot taller, and a more better diameter? Maybe 70mm and extend it right into the wheel, so I could just stack two spacers? Here are the measurements I took. Note: the taper on the hub spigot is part of the casting, so it's not uniform. Why not get a custom wheel spacer made up that locates everything correctly? 3 Quote Link to comment Share on other sites More sharing options...
cletus Posted March 19, 2019 Share Posted March 19, 2019 yeah that^. was going to draw a pic, that would be much better. znoelli in auckland makes them to order 1 Quote Link to comment Share on other sites More sharing options...
Testament Posted March 22, 2019 Share Posted March 22, 2019 may need to consider increasing the chamfer on the wheels transition from mounting face to hub bore so the spacer has enough meat, or consider steel rather than aluminium if its very thin 1 Quote Link to comment Share on other sites More sharing options...
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