Lets see your aftermarket seats!

1slow370 · 01-14-2014, 12:16 AM

I have to dig up a pic of a seat mount plate i found for the 370 that has the inner belt mount built into it. Watch out for eye bolts they are notorious for making you eat dash when they pull out of the thin tube wall or the boss welded to the bar gets ripped off. welded tabs are much stronger because you aren't drilling a hole through the tube.

Seat mount plate is made by planted technology It may be a copy of a bracket sparco makes too

wstar · 01-14-2014, 12:30 AM

Yeah Sparco's base does have an inside belt mount, but I think that's meant for re-installing the stock 3-point system. It's kind of too close to the seat to get a good angle through the hole for a harness.

I have eye bolts on all 6 harness straps on my setup, but none of them are into tube walls. They're all on welded mounting plates (for the bottom ones) or welded tabs for the eye-bolts (for the shoulder).

1slow370 · 01-14-2014, 12:43 AM

done properly with correctly rated bolts they will work you just have to be sure that the washer behind the mounting plate is big enough and strong enough not to pull through and of course the angle of the bolt has to line up with the belt, as in it should only pull on the stud not try to bend it. like this is really bad

1slow370 · 01-14-2014, 12:48 AM

also FYI FIA GT class seat mounts must be bolted or welded through 3/16 x 2 flat bar welded to the floor of the vehicle from door side frame rail, down all the way across and up the side of the center console, certain specs of tube work as well but factory mounts are not strong enough for real racing

1slow370 · 01-14-2014, 12:51 AM

also in the photo above of the celica harness bar the belt adjusters are up against the back of the seat so that in a collision they would either shatter the seat into the drivers back or because the buckles arent properly in tnsion like they should be they will simply snap and hes eating dash.

1slow370 · 01-14-2014, 01:05 AM

while we are at it make sure to observe proper belt angles and spacing between the shoulder belt mounts or else they will break/break you/slip off

note how the shoulder belts come together in back to keep them from sliping off the shoulders

1slow370 · 01-14-2014, 01:11 AM

In this picture from autopower the center eyebolt mount, while the bolt is correctly in tension the tab it goes through sure as hell isn't so thats crap the other two methods are acceptable. Wstar: I checked out the ones in your' journal and the braced and guseted the tabs pretty well, your belt adjusters are pretty close tour seats though it would be better if you could move them towards the bar more, and because you are pulling sideways on the Eye bolt make sure there is a large grade 8 hard washer under the tab and that the eye bolt is severly over rated because it is in at a bad angle check this out for proper use of an eye bolt, I used them at work all the time for lifting and this was part of the saftey course Eye Bolts That is unless those are just regular bolts under the belt holding the belt tabs down, can't see to well in your pick because the belt covers it.

Locking collars like this which are available from mcmaster are also a great idea if doing the belt around a bar method so the shoulder belts cant slide around and slip off.

And here we have an awesome roll bar with F'd up belt mounting

and one done correctly minus the bolted together rear supports

1slow370 · 01-14-2014, 01:54 AM

also i just checked out the amuse harness bar and that thing is utter garbage for belt mounting, don't trust any harness bar that uses the stock brackets, or does the eyebolts with inserts like that, IF the TS bar is the same way shame on those fools. Gotta watch out just cuz it's F'n JDM doesn't mean it is worth ****. Held together with a hose clamp? You gotta be ******** me right?

Edit: OMFG that piece costs a grip, tell you what send me your' thousand bucks and i will fly out and smash your' face into your' steering wheel for you instead of going through all the trouble to install that bar.

critical · 01-14-2014, 02:37 AM

mmm jdm hose clamps!!! lol

here's some cool stuff they have in japan:

NISMO racing harness NISMO Four-point, three inches, right seat, rotary buckle

1slow370 · 01-14-2014, 02:58 AM

Quote:

Originally Posted by critical

mmm jdm hose clamps!!! lol

here's some cool stuff they have in japan:

NISMO racing harness NISMO Four-point, three inches, right seat, rotary buckle

Oh yeah thats not mounted to thiiin sheet metal, or way past the 10 degree shoulder belt angle or anything :sarcasm: Oh and the reason i make a big deal out of that 10 degree angle stuff is once you go past that the belts will actually compress your spine in an accident instead of just pulling you back in the seat.

critical · 01-14-2014, 02:37 PM

Quote:

Originally Posted by 1slow370

Oh yeah thats not mounted to thiiin sheet metal, or way past the 10 degree shoulder belt angle or anything :sarcasm: Oh and the reason i make a big deal out of that 10 degree angle stuff is once you go past that the belts will actually compress your spine in an accident instead of just pulling you back in the seat.

figured coming from Nismo it'd be up to spec with safety...

wstar · 01-14-2014, 05:59 AM

I actually think I'm ok on the adjusters. There's not a lot of gap between my seatback and cage to begin with, but the adjusters are as far towards the cage-side as is reasonable and there's a bit of gap between them and the seatback. My shoulder-harness eyebolts do pull "sideways", but it's not quite at a 90, the plane tilts down in the back slightly. It's all grade-8 stuff though and put together by someone who's built (and seen wreck results from) many cages, I mostly trust the setup

It's cold and dark outside and the car's in the trailer right now, so I wasn't able to get very good pics, but here's a few:

Shoulder eyebolts from the top, with the excess-length rolls moved out of the way so you can see the bolts:

Underside of the same, w/ nut+washer (which I've since painted over - I only masked off the eyebolt top itself when painting):

And this is an example of my lower mounts (they all use the same basic welded-in round plate for the sub straps and belt straps, and the sub straps are down under the seat where they should be - this is one of the belt straps along the wall of the center console):

wstar · 01-14-2014, 06:01 AM

(And yeah, I just realized in that last pic that my lap belt on that side is rolled a little in the the clip - need to straighten that out!)

CarbonFZ · 01-14-2014, 01:00 PM

how do i know what rails and brackets to buy i have 2 vendors telling me different ones.

i trust one more than the other but just want to make sure.

theDreamer · 01-14-2014, 01:02 PM

Quote:

Originally Posted by CarbonFZ

how do i know what rails and brackets to buy i have 2 vendors telling me different ones.

i trust one more than the other but just want to make sure.

What seats are you wanting to order?
Also, some seats can work with multiple rails it might just differ in the height of the seat.

01-14-2014, 12:16 AM	#1 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	I have to dig up a pic of a seat mount plate i found for the 370 that has the inner belt mount built into it. Watch out for eye bolts they are notorious for making you eat dash when they pull out of the thin tube wall or the boss welded to the bar gets ripped off. welded tabs are much stronger because you aren't drilling a hole through the tube. Seat mount plate is made by planted technology It may be a copy of a bracket sparco makes too __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 01-14-2014 at 12:19 AM.

01-14-2014, 12:30 AM	#2 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	Yeah Sparco's base does have an inside belt mount, but I think that's meant for re-installing the stock 3-point system. It's kind of too close to the seat to get a good angle through the hole for a harness. I have eye bolts on all 6 harness straps on my setup, but none of them are into tube walls. They're all on welded mounting plates (for the bottom ones) or welded tabs for the eye-bolts (for the shoulder). __________________ 7AT Track Car! Journal thread / Car setup details

01-14-2014, 12:43 AM	#3 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	done properly with correctly rated bolts they will work you just have to be sure that the washer behind the mounting plate is big enough and strong enough not to pull through and of course the angle of the bolt has to line up with the belt, as in it should only pull on the stud not try to bend it. like this is really bad __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

01-14-2014, 12:48 AM	#4 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	also FYI FIA GT class seat mounts must be bolted or welded through 3/16 x 2 flat bar welded to the floor of the vehicle from door side frame rail, down all the way across and up the side of the center console, certain specs of tube work as well but factory mounts are not strong enough for real racing __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

01-14-2014, 12:51 AM	#5 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	also in the photo above of the celica harness bar the belt adjusters are up against the back of the seat so that in a collision they would either shatter the seat into the drivers back or because the buckles arent properly in tnsion like they should be they will simply snap and hes eating dash. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

01-14-2014, 01:05 AM	#6 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	while we are at it make sure to observe proper belt angles and spacing between the shoulder belt mounts or else they will break/break you/slip off note how the shoulder belts come together in back to keep them from sliping off the shoulders fuct and DEpointfive0 like this. __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50

01-14-2014, 01:11 AM	#7 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	In this picture from autopower the center eyebolt mount, while the bolt is correctly in tension the tab it goes through sure as hell isn't so thats crap the other two methods are acceptable. Wstar: I checked out the ones in your' journal and the braced and guseted the tabs pretty well, your belt adjusters are pretty close tour seats though it would be better if you could move them towards the bar more, and because you are pulling sideways on the Eye bolt make sure there is a large grade 8 hard washer under the tab and that the eye bolt is severly over rated because it is in at a bad angle check this out for proper use of an eye bolt, I used them at work all the time for lifting and this was part of the saftey course Eye Bolts That is unless those are just regular bolts under the belt holding the belt tabs down, can't see to well in your pick because the belt covers it. Locking collars like this which are available from mcmaster are also a great idea if doing the belt around a bar method so the shoulder belts cant slide around and slip off. And here we have an awesome roll bar with F'd up belt mounting and one done correctly minus the bolted together rear supports __________________ ANSWER PRICE LIST Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 01-14-2014 at 02:15 AM.

01-14-2014, 01:54 AM	#8 (permalink)
1slow370 A True Z Fanatic Join Date: Aug 2009 Location: In the D Posts: 3,732 Drives: v8 74 260z ;) Rep Power: 7252	also i just checked out the amuse harness bar and that thing is utter garbage for belt mounting, don't trust any harness bar that uses the stock brackets, or does the eyebolts with inserts like that, IF the TS bar is the same way shame on those fools. Gotta watch out just cuz it's F'n JDM doesn't mean it is worth **. Held together with a hose clamp? You gotta be **** me right? Edit: OMFG that piece costs a grip, tell you what send me your' thousand bucks and i will fly out and smash your' face into your' steering wheel for you instead of going through all the trouble to install that bar. fuct likes this. __________________ ANSWER PRICE LIST** Answers - - - - - - - - - - - - - - - - $0.75 Answers (requiring thought) - - - - $1.25 Answers (correct) - - - - - - - - - - $12.50 Last edited by 1slow370; 01-14-2014 at 02:01 AM.

01-14-2014, 02:37 AM	#9 (permalink)
critical A True Z Fanatic Join Date: Oct 2012 Location: Washington Posts: 1,252 Drives: 09' 370z 7AT Rep Power: 17	mmm jdm hose clamps!!! lol here's some cool stuff they have in japan: NISMO racing harness NISMO Four-point, three inches, right seat, rotary buckle __________________ Quaife w/ gears \|Stillen Gen 3\|SOLD FI Resonated Test Pipes \|SOLD FI 18'' \| 25row Stillen Race \| Progress 35mm/25mm sways \| Swifts/Koni\|Volk G25's\| Stoptech SS lines\|\|SPL Front/Rear Arms\|

01-14-2014, 05:59 AM	#12 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	I actually think I'm ok on the adjusters. There's not a lot of gap between my seatback and cage to begin with, but the adjusters are as far towards the cage-side as is reasonable and there's a bit of gap between them and the seatback. My shoulder-harness eyebolts do pull "sideways", but it's not quite at a 90, the plane tilts down in the back slightly. It's all grade-8 stuff though and put together by someone who's built (and seen wreck results from) many cages, I mostly trust the setup It's cold and dark outside and the car's in the trailer right now, so I wasn't able to get very good pics, but here's a few: Shoulder eyebolts from the top, with the excess-length rolls moved out of the way so you can see the bolts: Underside of the same, w/ nut+washer (which I've since painted over - I only masked off the eyebolt top itself when painting): And this is an example of my lower mounts (they all use the same basic welded-in round plate for the sub straps and belt straps, and the sub straps are down under the seat where they should be - this is one of the belt straps along the wall of the center console): __________________ 7AT Track Car! Journal thread / Car setup details

01-14-2014, 06:01 AM	#13 (permalink)
wstar A True Z Fanatic Join Date: Mar 2009 Location: Houston, TX Posts: 4,024 Drives: too slow Rep Power: 3596	(And yeah, I just realized in that last pic that my lap belt on that side is rolled a little in the the clip - need to straighten that out!) __________________ 7AT Track Car! Journal thread / Car setup details

01-14-2014, 01:00 PM	#14 (permalink)
CarbonFZ Enthusiast Member Join Date: Feb 2010 Location: sacramento Posts: 446 Drives: 2013 370Z 7AT PW Rep Power: 17	how do i know what rails and brackets to buy i have 2 vendors telling me different ones. i trust one more than the other but just want to make sure. __________________ My Build Thread

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