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I am looking for some advice in regards to a know working combination for someone who is 6'3" tall to install a roll bar (and seat if needed) into A 2003 996tt (sunroof). The car currently has power adjustable seats and when I Autocross the car I have to lower the seat to it's lowest position and recline the seat back significantly for me to have enough to clear my helmet. I have a set of JRZ RS Pro 3 way adjustable coilovers on order and would like to install a rollbar into the car to be able to mount the remote reservoirs, provide some safety in case of a roll over, and maybe eventually install a 5 or 6 point harness. With my current seats need to be recline when using a helmet it's looking impossible to find a roll bar that will not inhibit my ability to sufficiently recline. As if this situation wasn't difficult enough, here comes the curve ball. My girlfriend also Autocrosses the car as well and she is 5'7" tall. The power seats allow us the adjustability needed for both of us to drive the car with a helmet on. My driving position with a helmet on is far from ideal as my arms are stretched out further than I would like and a more upright seating position would be beneficial for racing (without a helmet on I don't recline the seat nearly as much as I do with a helmet on). If I do decide to use a fixed back seat mounted low enough to the floor so that I have enough helmet clearance I will need to use sliders and also need a solution like a taller seat cushion for the GF.
GMG RSR harness bar has a little more room because of the bend the bars behind the seat have, but looks highly likely it won't allow my seats to recline enough. https://shop.gmgracing.com/collectio...arness-rollbar
GMG WC harness bar also has a little more room because of the bend the bars behind the seat have, but looks highly likely it won't allow my seats to recline enough. https://shop.gmgracing.com/collectio...arness-rollbar
Options:
A. Keep stock power seats and get one of the GMG bars and pray I can still recline the seat enough for my helmet.
B. Buy a fixed back race seat with a significantly lower mounting height than the lowest position of the stock power seats.
C. Buy Recaro Sportster seats which recline and accommodate 6 pt belts, but are pretty heavy 33lbs and I am not sure I can get them mounted on sliders lower than my power seats will adjust.
Looking for advice on:
Lower seat mounting options with a slider for a fixed back seat
Roll bar that might allow me to recline the stock seats where I need them
Booster seat cushion options
Here is a picture of where the seat is reclined when I have a helmet on:
That is a horrible seating position and no rollbar is going to fit with the stock seats. I think your best bet is fixed back race seats on sliders. Brey Krause makes some good equipment that integrates win Recaro and other top manufacturers. With your height, you’re going to need to experiment.
I just did another test fit and got the seat a little less reclined, but we are talking about less than a finger's width gap between the top of my helmet and the headliner. A roll bar isn't going to do me much good if my helmet is higher than the top bar. Seat lowering looking to be the best option...
When faced with the same issues at 6'4" tall in my track and street Honda S2000 I had a custom, Spec Miata model, seat built to my body measurements by Ultrashield Race Products at a very reasonable price. I am tall in the upper body. I bolted mine directly to the floor pan to get the head room I needed to make me safer in a rollover. The seat I bought was a Spec Miata seat. I would not want to spend hours in that seat but it got my under the roll bar and on the track with a reasonable safety margin well beyond the broom stick test.
05-31-2018, 10:22 PM
Tall driver seat/rollbar recommendation
