Howdy,

I've got a 1999 built for WRL GP3.

Most of the modifications have been safety stuff to get it legal: caged, seat, harness, fire system, etc. Other than that it's got DIY Bilstein coil overs, NB1 6 speed, MS2, DIY intake, NB2 header and a Borla SM exhaust. A RaceCapture unit drives a Raspberry PI based dash and shift light. Basically everything on this car has been done in my suburban garage.

This year the rules are creeping along so to keep up I'll be looking to add:
- 9LR wing (already on the car) and DIY air dam/splitter/ducting (in progress)
- A flat top intake, BP5A cam and RB header
- Single adjustable coil overs
- Wilwood 4 pistons will go on the front if I can work out brackets to fit 1 piece rotors (can't afford the modifier for 2-piece).

I've been a member for a while now and never have posted. I have a lot more to learn than contribute at this point. I bought one of matrussell122's radiator support bars last week and he gave me a little **** for lurking, so here I am.

A couple of photos from the pits of 24@5280 back in 2017:

 

Nice. Make sure your car is light light light, get some serious suspension, and don’t cheap out on tires, and you’ll have a potent package.

We we have a similar setup for our LDRL car, ‘93, ecotec 2.4, MCS singles, stoptech front brakes, and either 225 rs4 or 205 re71rs, super fast.

 

Shout your fuelly a balaclava, he deserves (needs) one!

I'm a bit surprised they allow refuelling when the driver is being changed (if I am reading that picture right?) - I think the usual thing here (at least at amateur level) is that nothing happens to the car while refuelling (and a crewman standing by with an extinguisher, but that might be there just not visible), that is the way they do it at the two local 300km events I am familiar with.

 

I hear you on the weight reduction. With the original build we were right on our target power to weight ratio, but with two years worth of rule changes I'm catching up. That's just how it goes...

The Ecotec is a really interesting swap. I've kicked around the idea of trying to get up to 200 whp and chasing Boxsters in GP1. We've used the rs3/rs4 ever since bumping to 225 and are very happy with them.

I'm pretty sure that fueler was me . For us they're not required by the rules unless you have facial hair that extends beyond the bottom of the helmet.

WRL does allow driver changes and swapping ice in cool suit coolers during fueling. Other series like Lemons have similar rules to what you describe. The guy with the fire bottle in the blue suit on the right side of the image. We have three people on fuel in hot pits: one holding the fire bottle, one fueler and one moving jugs from the pit wall to the fueler.

 

I don't know about Lemons...but all the other "cheap" enduro series allow driver changes during fueling.

They do not allow any other work to be done on the car during fueling. Only driver change.

 

Rules are the minimum Scissor. You can still use a balaclava if the rules don't require them (I am guessing that they don't ban them, right?). You have a lot of exposed skin there, and that is just stupid - a fuel fire is highly likely to ringbark your neck, and while the bloke with the extinguisher will probably put it out before you are incinerated, you will not be a pretty sight. Do a search for the Miata Cup car that had a fuel fire, and read the driver's account, and study the pictures. Or the Bargaballo Supercars fire, when a stalled car had its tank ruptured, the driver had burns even though he had all the gear. Another plus is that a balaclava (I have two, which I rotate) is much easier to clean than your helmet padding - I have a very oily scalp, and I would be regularly replacing the padding otherwise.

On reflection, and I haven't checked, but I may be confusing the driver change with working on the car.