I managed to pick up a pair of Cobra seats for my Fury but have a question regarding fitting.

The drivers side I plan to have fitted on a runner and the passenger side fitted direct to the floor, however having trial fitted them I have found that reclining them slightly with a 2" block under the front gives a better feel and support under the thighs.

The question is, if I fit the seats with a block/spacer under the front will this be ok for IVA and has anyone else done this and got an idea of how to go about it. Would it need to be a soild block or could I just turn down a spacer?

Attached a picture to try and explain what I mean...




Description

Put some effort into making it look neat and tidy and the inspector won't give it a second glance. He may well grab hold of the seat and waggle it around to see if it's secure (mine did, half-heartedly) so make sure it is well fixed.

[Edited on 9/4/15 by David Jenkins]

as you have drawn it, the whole seat will lift as it is slid forward.

if you have the runners on the floor, and the spacers from them to the seat, the height will not change as the seat is moved.

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Originally posted by gremlin1234
as you have drawn it, the whole seat will lift as it is slid forward.

if you have the runners on the floor, and the spacers from them to the seat, the height will not change as the seat is moved.

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My cobra seats came with four 1" aluminium spacers for mounting direct to the floor. As I used sliding mounts, I put two of the spacers under the front edge of the seats to get 1" of lift there. 2" may be better.

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Originally posted by gremlin1234
as you have drawn it, the whole seat will lift as it is slid forward.

if you have the runners on the floor, and the spacers from them to the seat, the height will not change as the seat is moved.

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Originally posted by gremlin1234
...if you have the runners on the floor, and the spacers from them to the seat, the height will not change as the seat is moved.

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We have put various seats into various cars over the years and have used 2" thick wall box section cut into 2" lengths with one of the sides cut away ( makes a very strong C shaped channel ) so a ring spanner can have decent access. Once painted it looks like it's part of the runner mechanism.
Hth
Mike

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Originally posted by adithorp

This is how mine work in my Fury.

Originally the passenger side seat (which is fixed) was mounted on 4 1" spacers and the driver seat on runners bolted dirrect to the ally with large (+2" washers on the underside. This passed SVA.
Later in an attempt to lower the seats (to give a lower eyeline through the 'screen) I tried...

a) removing the spacers/runners. This was too much as the bowl of the GRP seat sits lower than the mounting points.

b) using 2 of the 4 spacers, at the front the passenger seat and two spacers+the runners on the drivers seat. I tried the runners both on the seat (as it was easier) but although the angle was shallow, it was too much rise in practice. They are now on the floor and it works fine.

The height difference (due to the drivers side having runners) oddly wasn't noticable. I've since removed the headrest from the n/s seat to give easier access to the boot so you def'can't tell now. The angle does mean there's a trwisting/bending on the floor/seats/runners but it's hardly noticable.

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This is a very interesting thread, I'd also like to see what you end up with.

And it's also highlighted something I'd not even realised. I'm aiming to fit my MX5 seats on the original runners on both drivers and passengers side. It didn't even occur to me that the passenger seat being on runners would be redundant! I think I might just drop the drivers floor to compensate for the runners.

That's how mine are, passed IVA no problem, and as Angel says it lifts short people up, although the lifting effect is minimal.
The passenger side is fixed and as far back as possible. I have lifted the GRP seats a total of 75mm and still can't see the near side front wheel arch.

The only issue with a fixed passenger seat is when (not if) something gets dropped down the side or behind it.

Tim as you'll find when you get your tub it isn't symmetrical (though I've been told they're better than they use to be from the old molds) so slight differences from one side to the other aren't as noticeable as you'd imagine... especially to people who haven't spent months staring at it and scratching there heads like you will.

I got 4 seat runners out of a Citreon C3 at the scrappy for Ģ20. ( c2,3,4 runners are all flat and the same I believe)

Mounted them on 1" Ali spacers to clear the chassis rail and was ok for sva.

Bit later found the rear mounts were tearing the floor a bit so reinforced the back ones with a life of 2" wide flat ally bar right across the car.

This came very handy the secure the front of the rear diffuser a bit later on.

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Originally posted by adithorp
The only issue with a fixed passenger seat is when (not if) something gets dropped down the side or behind it.

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Tim as you'll find when you get your tub

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Originally posted by coozer
I got 4 seat runners out of a Citreon C3 at the scrappy for Ģ20. ( c2,3,4 runners are all flat and the same I believe)

Mounted them on 1" Ali spacers to clear the chassis rail and was ok for sva.

Bit later found the rear mounts were tearing the floor a bit so reinforced the back ones with a life of 2" wide flat ally bar right across the car.

This came very handy the secure the front of the rear diffuser a bit later on.

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No mate, they where perfect for the seats, drilled a hole at the back for the rear seat mount and welded a lug on the front.

Theres alttle bit in my blog, here:

http://mymnrvortx.blogspot.co.uk/search?updated-max=2008-04-21T18:58:00Z&max-results=10&reverse-paginate=true

Then drilled the holes in the floor.

Only thing that needs moddy is the width, just cut the bar to get the right width them slid a bit tube over.

[Edited on 12/4/15 by coozer]

I have been perusing the forum for ideas regarding mounting but canīt make up my mind.
I have made some contraptions to consisting on 50 X 3 m, Steel Ba rwhich I was planning to weld waith some brackets to the chassis tubes, but due to the seat arrangement I had to use some spacers between the seat and the runners so I end up with almost 5" (125 mm) above my Floor.
Questions are:
- Is it too much (as in Too high should be lower)?
- Is it OK? (as in Donīt bother you wonīt notice)
- Mi Floor is 3 mm Thick Alumin**m and AS I was a little bit Paranoid when I drilled the floor Rivets are really close together.
- Would it be OK if I drill my floor and install directly to it with regular (or Nylock) Nuts from below?
If I go this route, I may use Thin washers on the rear Bolts and maybe 12 to 25 mm spacers on the fronts just to raise the fromt edge of the seats a tad..
Any comments, suggestions or words of encouragement really appreciated.
AA

would it not be better to fix the seats in the exact position for the IVA rules, and then do what you want with runners etc post IVA ?

steve

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Originally posted by steve m
would it not be better to fix the seats in the exact position for the IVA rules, and then do what you want with runners etc post IVA ?

steve

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Originally posted by adithorp
.... the load (I measured the ones I made/used and they're 70mm diameter x 4m thick ally).

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http://www.ebay.co.uk/itm/KART-4-x-Large-Rubber-Seat-Spacers-40mm-x-30mm-Great-Value-Best-Price-On-Ebay-/271250528743?pt=LH_DefaultDomain_3&hash=i tem3f27ca99e7

Thats how I did mine

I am faced with this problem as well but really need to know when building the inside seats column and pedals which do you start with first or do you just move it all around at the same time to suit?
Thanks Mark