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      04-05-2012, 11:52 AM   #23
kchu221
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Quote:
Originally Posted by mkPOTO View Post



and you can see the mount points on the first picture
this might be a noob ass question but after you drill holes onto the frame, and later down the road, you decide to take the cage out, will the holes in the frame do any damage??
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      04-05-2012, 11:55 AM   #24
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Originally Posted by kchu221 View Post
this might be a noob ass question but after you drill holes onto the frame, and later down the road, you decide to take the cage out, will the holes in the frame do any damage??
no just two holes, and you can plug them up as well
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      04-05-2012, 12:01 PM   #25
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Quote:
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no just two holes, and you can plug them up as well
ohh really? i thought it was more then just two holes, cuz arent you suppost to drill holes on the bottom of the back seats also???
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      04-05-2012, 12:07 PM   #26
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I'm guessing for this to be of any legal use on a track, there needs to be a minimum of 8 bolts holding that thing in place with plates underneath since you aren't welding.
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      04-05-2012, 12:15 PM   #27
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Just get a racing seat. The seat alone will already hold you much, much better. Just my 2 cents.
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      04-05-2012, 12:16 PM   #28
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Do a search for a thread I started here in the track section a few months ago--I was also interested in a harness bar I could use for my E90 M3 so I could run harnesses and finally give up on the Schroth QuickFit that's been teasing us for months and months. Quite a few people here, though, strongly discouraged me from doing a harness bar, saying that even the ones from reputable makers are half-assed solutions at best, and could potentially be more dangerous than running stock belts.

A lot of people seem to think the best bet is either keeping things stock, or putting in a dedicated, welded-in, tested and proven cage with harness mounting points welded to appropriate spots in the car (for lap belt mounts and anti-sub mounts).

Last edited by paradocs98; 04-05-2012 at 02:02 PM.
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      04-05-2012, 12:24 PM   #29
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Quote:
Originally Posted by rldzhao View Post
Just get a racing seat. The seat alone will already hold you much, much better. Just my 2 cents.
I was going to, then I realized I need the heated seat for the winter. and If I change my seat, have no idea what to do with it. My stock OEM exhaust still in my storage room. And After I graduate in two years. I need to move all these stuff is a lot of trouble.
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      04-05-2012, 01:16 PM   #30
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Quote:
Originally Posted by kchu221 View Post
ohh really? i thought it was more then just two holes, cuz arent you suppost to drill holes on the bottom of the back seats also???
sorry there is a total of four i believe and the rear bolt up to stock screw holes so no need to drill in the back (there are two screws for the rear, which I got confused with)
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      04-05-2012, 01:51 PM   #31
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Quote:
Originally Posted by mkPOTO View Post
sorry there is a total of four i believe and the rear bolt up to stock screw holes so no need to drill in the back (there are two screws for the rear, which I got confused with)
thanks bro for clarifying!
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      04-06-2012, 10:17 AM   #32
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Right the holes can be filled with plugs. BMW has holes that are plugged from the factory, it will not hurt anything.
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      04-06-2012, 10:32 AM   #33
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Quote:
Originally Posted by THE TECH View Post
I'm guessing for this to be of any legal use on a track, there needs to be a minimum of 8 bolts holding that thing in place with plates underneath since you aren't welding.
You can use any bolt in cage on track days. There are no rules for that. I would suggest to anyone doing wheel to wheel racing to get a proper weld in roll cage.

Our cage has three bolts per each base plate and rear down bar mounting points. Including a plate on the bottom of the car to sandwich the main hoop.
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      07-09-2012, 06:10 PM   #34
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If doing a rollbar (not harness bar) instead of a full rollcage, are there weight difference dpending on manufacturer? (Seen a few at the track with aluminum not sure how safe those are). There's setup I purchased from Autopower before MFest that I ended up not installing just because it's insane weight. I will most like be going with VS motorsport once I get a little clarity on the different types of rollbars. Holding off on installing my racing seats as well, as I fear I would have to remove the seats to get the rollbar in.
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      07-10-2012, 07:02 PM   #35
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^^ I wouldn't be so concerned about the added weight of a roll bar. The amount of safety it adds far out weighs a couple more lbs. How much is your life worth? The roll bar in my GT3 probably weighs 70lbs. Plus if your adding one piece seats, you're saving a ton of weight over factory seats, so essentially the weight you add with the bar is just countering the weight you lost with new seats.
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