So I got the Sparco R600 seat in the other day and posted a bunch more about it on my build page. Short version- It is much lighter (almost 25lbs.), way more comfortable, keeps you planted in the seat, and just barely clears/touches the B-pillar. The bad news is that it sits up a little higher to the point that my helmet hits the roof. I have a guy in our body shop who can fab up new brackets in the next month or two. Now that it is cold here it is also really nice to have a cloth seat that is not freezing cold when you get in compared to the leather.

 

Those sparco sit up higher? Argh, this does not bode well for me.

 

If you need low, go with side mounted seats. They should be able to go lower than anyone would reasonably want to go in this chassis.

 

Bummer - was hoping it'd sit lower because I wanted a set of braum seats with these brackets.

 

I see these are on bride brackets; would sparco brackets be comparable?

@Crazyirish side brackets are fixed position though, right?

I'm also getting large chrono road seats, not sure if they will have fitment issue.

 

Mine came with all the hardware needed... They actually came with 8 bolts per bracket... 4 flat head allen bolts and 4 hex head bolts. I'd just pick up some extra hardware at the store and get stainless steal hardware if you can find it.


Odd that the holes didn't line up. Mine lined up perfectly. Did the seat mounting pattern match the bracket dimensions that I posted? At least that's a fairly easy fix.

 

I'm guessing most of the height increase is due to the thickness of the lower seat cushion? From this pic it looks like you Sparco seat has a pretty thick seat cushion whereas the seat cushions on my Cobra seats are quite thin.

 

They can be used with sliders. Popular setup in the 240sx world as the stock seats are very low already. Unless you meant fixed back seats, in which case yes, most side mounts are fixed back. There are several exceptions.

Whether this setup would work properly in a G, I dont know. Further research is required.

 

By fixed position I meant no slide.

I hate to be a bother, but can anyone point me to the right direct of where to research? I don't know much about seat brackets and am not really sure where to start.

 

I considered side mounts, but it would be really tough to do in this car since side mounts are totally flat on the bottom and the floor of the G37 sedan is not flat at all so there would be really no way to mount them- especially since you would need to drill new holes in the floor and find some way to reinforce them so they could handle the impact of a crash. The other issue is that almost all side mount seats are non-adjustable race seats- not really ideal for a street car.

Bride makes the only seat rails I know of that fit the sedan. The Braum seats might be ok for the street, but they are not designed to handle cornering loads on the track. I can sit in my Sparco seat ok without a helmet. It is not a huge increase in height, but it does not work with a helmet for me at 6'1". Someone shorter than me might be ok with a helmet.

Sparco does not make brackets for the G37 sedan. If you get chrono road seats, just make sure they are not any wider than the R600. Mine fits, but it does touch the B-pillar if I recline it enough.

The dimensions on the Bride bracket and Sparco seat were identical, but not in person. Sparco uses the wider holes compared to your Cobra seat. Not a big deal as I got new hardware and widened one hole.

Actually, no. The front of the seat cushion is quite thick, but the back is very thin. It raised me up roughly 1" in the front and 1/2" in the back. It just feels like I am sitting up really high. I still had to recline the factory seat with a helmet. The surprising part is that this seat is much more comfortable than the factory seat. Must be more dense/better foam.

This thread is a great place to start... and end since Bride seems to make the only seat rails compatible for the sedan. Be patient as they take about 3-4 months to get from Japan.

 

Thanks for the responses 4drz. I have a coupe though. What does that mean for me? Do I have even less space?

 

It means there are more rails that are advertised to work for your car. Wedge and Buddy Club comes to mind.

 

Wedge is another one that makes brackets for the G37 Coupe and 370Z, but not for the sedans.


Brackets

 

I'm not sure about space, but you have a lot more options to choose from for seat rails than those of us with sedans.


On a side note, I am now somehow sitting a bit lower in the seat now. The padding must have softened up a bit. I noticed this because I never raised up my rear view mirror, but today was the first time it looked to be just about the right height. I still plan to lower the seat bracket so that I don't have to recline the seat way back to fit with a helmet.

 

Well that's kind of nice for you. I'm guessing the lower cushion padding just conformed to your body a bit once you broke the new seat in.


I remember when I first installed my new seats it kind of felt like I was sitting a little bit lower than with the OEM seats... but now that you mention it, I don't recall having to readjust any of the mirrors so I'm guessing that means I must be sitting at about the same height as with the OEM Sport seats. Oh well, I'm only 5'10" and most of that is in my legs, so I still have plenty of clearance for my gigantic head... even with a helmet on.