Mounting Race Seats
#65
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willing to snap a picture when you get a chance? i might be interested in cutting the floor. so the hump is actually a separate layer of metal on top of a separate layer of flat metal floorboard? i want to get as low as I can to stay safe on the street. my head is right in front of the bar right now.
#72
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willing to snap a picture when you get a chance? i might be interested in cutting the floor. so the hump is actually a separate layer of metal on top of a separate layer of flat metal floorboard? i want to get as low as I can to stay safe on the street. my head is right in front of the bar right now.
http://picasaweb.google.com/10424768...37066235936482
There's two ways to do it...
1) you can drill out the spot welds, remove the entire piece and then figure out how to seal up the holes.
2) you can cut the nubs out with your preferred tool of choice, leaving the flat welded part of the metal that's already against the body intact. I like to use a 6" deathwheel and an air powered reciprocating saw here, followed up with a grinding wheel to get it flush/remove sharp edges.
Hope this helps!
#73
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Bringing this back up from the dead. I want to redo my seat mounts.
My Sparco Sprint V has 4 M8 (iirc) bolts that hold it to any sort of rail, are these even thick enough...it is a FIA approved seat. Another option I would consider is to remove the stock seat mount humps and bolt the seat directly through the floor with M8 grade8 bolts and backing plates. It just seems a bit odd that the Sparco would have such small bolts while the stock seat is bolted in with something like 7/16" bolts.
Is something like this safe (found on CR)? I would probably add two pieces of steel across the floor to connect both sides if the notch is acceptable.
![](http://i49.tinypic.com/15wfggg.jpg)
![](http://i48.tinypic.com/2u8bifs.jpg)
![](http://i49.tinypic.com/34yehs1.jpg)
My Sparco Sprint V has 4 M8 (iirc) bolts that hold it to any sort of rail, are these even thick enough...it is a FIA approved seat. Another option I would consider is to remove the stock seat mount humps and bolt the seat directly through the floor with M8 grade8 bolts and backing plates. It just seems a bit odd that the Sparco would have such small bolts while the stock seat is bolted in with something like 7/16" bolts.
Is something like this safe (found on CR)? I would probably add two pieces of steel across the floor to connect both sides if the notch is acceptable.
![](http://i49.tinypic.com/15wfggg.jpg)
![](http://i48.tinypic.com/2u8bifs.jpg)
![](http://i49.tinypic.com/34yehs1.jpg)
![](http://i50.tinypic.com/ev5f6b.jpg)
#75
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dgmorr - I would prefer to see Cold-rolled steel used instead of hot-rolled. Cold rolled will not crack when bending and no need for relief cut to be welded back together. It is a good idea to box the two together with cross bracing as you mentioned. Then it becomes one piece instead of two trying to do the same job.
#76
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
dgmorr - I would prefer to see Cold-rolled steel used instead of hot-rolled. Cold rolled will not crack when bending and no need for relief cut to be welded back together. It is a good idea to box the two together with cross bracing as you mentioned. Then it becomes one piece instead of two trying to do the same job.
Edit: BTW, thanks for the pics, dgmorr. That last one is a pretty clear illustration of what I'd eventually like to do.
#77
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My seat is mounted with a custom rail. It's as low and as far back as you can physically put a side mount with the humps still there. I can stick about 5 sheets of paper between the carpet and the bottom of the seat. The seat won't go further back because it will interfere with the bolts to the humps and the roll bar. I don't think cutting the humps would really get me any more height substantial enough to be worth it. But I can swap my stock seats in and out which is nice.
#78
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In an effort to do as little work as possible installing my seats, I ran across this:
http://www.wedgeengineering.net/HOME...6/Default.aspx
You can give them the car and the type of seat and they will fab the bracket. They also apparently make the sliders that the seat companies sell with their seats. I'm getting a quote on a set to fit my buddy clubs.
And also came across this:
http://www.good-win-racing.com/Mazda...t/61-0555.html
http://www.good-win-racing.com/mazda...61-0555PA.html
http://www.wedgeengineering.net/HOME...6/Default.aspx
You can give them the car and the type of seat and they will fab the bracket. They also apparently make the sliders that the seat companies sell with their seats. I'm getting a quote on a set to fit my buddy clubs.
And also came across this:
http://www.good-win-racing.com/Mazda...t/61-0555.html
http://www.good-win-racing.com/mazda...61-0555PA.html
#79
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Post up a quote if you get one.
I've seen those good-win mounts, they're good if you are the correct height for the holes they already have drilled. They look like they'd be too close to the wheel in my car. 949Racing has posted pics of a mount they're working on, looks very good.
In the mean time, I've sent this off to a water jet to see how well they work. I'll post pics when I get them back.
http://www.projecttrackday.com/?p=1089
I've seen those good-win mounts, they're good if you are the correct height for the holes they already have drilled. They look like they'd be too close to the wheel in my car. 949Racing has posted pics of a mount they're working on, looks very good.
In the mean time, I've sent this off to a water jet to see how well they work. I'll post pics when I get them back.
http://www.projecttrackday.com/?p=1089
#80
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Post up a quote if you get one.
I've seen those good-win mounts, they're good if you are the correct height for the holes they already have drilled. They look like they'd be too close to the wheel in my car. 949Racing has posted pics of a mount they're working on, looks very good.
In the mean time, I've sent this off to a water jet to see how well they work. I'll post pics when I get them back.
http://www.projecttrackday.com/?p=1089
I've seen those good-win mounts, they're good if you are the correct height for the holes they already have drilled. They look like they'd be too close to the wheel in my car. 949Racing has posted pics of a mount they're working on, looks very good.
In the mean time, I've sent this off to a water jet to see how well they work. I'll post pics when I get them back.
http://www.projecttrackday.com/?p=1089