6G Celicas Forums

My GT Four came with a stupid yellow steelie motorcycle tire spare. It has 2 plugs in it that when drained drain over the gas tank...

It's stupid because It isnt flush with the floor the carpet is retarded like hiding a boner and If you remove the spare the cardboard cover just falls inside the stupid hole.

Could I suggest mounting the fuel tank inside the trunk? I have had the idea of mounting 10 gallon square fuel cells in the trunk for a GT4 Race car...ofcourse I am a long ways from that...


The spare might be different from USDM celica because of the GT Four massive brake calipers...My old 2000+ Celica steelies would not fit the GT4 because of the brakes. The GT4 steelie has an odd shape to fit around the brakes and is 17" instead of regular 15"

This post has been edited by Neon90424: Jan 20, 2011 - 10:33 PM

Thanks, I'll try; it seems pretty easy to me, but I have experience with my rx7 when I put the viper rear end in it. There's only one angle you really need to be concerned about. Start with the transmission and work your way back keeping the driveshaft level. Build your mounts based off of that angle of the transmission output shaft.

There's some debate from what i've read at what to set the pinion angle on an IRS. 0 or 1 degree, they say 1 degree to keep the u-joints lubricated properly. I shoot for 0 though. All you need is one of these, provided you can weld.

http://www.sears.com/shc/s/p_10153_12605_0...mp;blockType=G2

This post has been edited by czwalga: Jan 21, 2011 - 7:26 AM

Not a bad thought but Rally America is really strict on mounting of fuel cells. The cheapest 'approved' 12+ gallon fuel cell is around $500 + shipping. On top of that there needs to be a metal barrier between the 'open air' and the fuel cell.

If you have a coupe, you could just plate the area behind where the rear seats were. Since I have a hatch, that's pretty much impossible. I'd have to make a giant metal sealed box for the fuel cell to fit in. Thats why I went with the GT4 gas tank.


Doesn't suprise me that even a small donut sticks up, even if the well was shifted into the right location there's no way the tank would fit in properly since its much deeper in the GTs.

This post has been edited by czwalga: Jan 21, 2011 - 7:23 AM

Having your fuel that high up wouldn't be very good for handling and control. its bad enough it has to be behind the rear axel, let alone raising the centre of gravity.

Well after cutting the spare tire well out, and a little notch in the wheel well I got the tank to fit. However i'm not comfortable with how low it sits for a rally car. On top of a skid plate would be even lower.

It would be fine for the street, but for my own piece of mind i'm not installing it.


The GT4 gas tank is for sale in the classifieds. I threw it on ebay but if someone wants to work it out a deal I can end the auction early.

I'm rebuilding the engine and waiting for my E154f awd tranny to arrive so i can get started on the mounts. So i dont have that much right now thats picture worthy.

I did the door gussets, and I started making an aluminum dash. It's completely unnecessary but I had a 2x4' piece of aluminum from my rx7 that I never end up using, so i figured i'd give this a shot. Have to make it in 2 parts though otherwise i'd never be able to get it out with a windshield and a cage.


Made a template out of construction paper, cut the metal out. Tacked the one side then bent it around.








Start of the dash, still have lots to do.

Nice cage man, liking the gussets.

Why dont ya get fancy and dimple die your gussets?

Well a decent dimple die set is $200 plus. I do have a press already but still, no need to spend the money.

On top of that the dimples add rigidity for flexing and compression, however the point of the gussets on the door bars would be put into tension in which case a dimple die gusset would be weaker for this application in my opinion.

This is a truely impressive thread, my hat is off to you sir.
Also what do you plan to do with the door panels? are you just doing a sheet of aluminium over them or what? ive been thinking of doing something similar myself

Honestly I dont know yet. Itll be one of the last things I worry about. I do have to cover them according to the rules. Aluminum to cover them wouldnt be the cheapest solution unless its really thin. I'm pretty sure the stock panels will fit even with the roll cage but would probably look out of place.

how thick is the gusset material?
it may be the pics, but it looks really thin?

16 gauge which is actually thicker than required. I think 18 gauge is the minimum.

They used to allow just thick flat piece of steel 1/8"+ in the center. But FIA changed requirements to the taco shell type even with thinner metal. Apparently the have some crash testing knowledge that it is better.

ahh cool, definetly thicker than i was thinking then.
lovin the progress man, keep it up!

Any reason why the main hoop is pretty far back? I have always wondered on how they completely weld around the tubing that attaches to the front strut tower going through the firewall.

Well i'm 6'2'' my codriver is 6'2''. With a helmet and tube across the roof that's the angle/distance the seat needed to be.


First thing you do before you build a cage is mount your seats and build around. The back of the seat is probably an inch or so away from the plane of the main hoop.


The tubes that attach the front strut tower are only welded about 4/5th of the way around. They are optional tubes so they are not required to be welded the entire way around. Every other tube on the car is welded 100% around, A lot of the welds were a bitch to finish due to tight areas and not being able to see. I was welding with a mirror; everything is in reverse a big pain in the ass.

Ugh.... still waiting on the transmission. Progress is pretty much at a standstill. I was supposed to have it months ago.

are you still doing the 5sfe and awd combo? i cant wait to see this thing when its done, and as far as the roof going back on goes i have a friend locally who is doing the same thing with the cage, as far as cutting the roof off goes. But you may want to look into some kind of composite for the roof replacement, i know he is doing some kind of kevlar carbon fiber weave mix, check our RacingComposites.com

Yeah, but I've been waiting for the transmission for months now. If I dont have it within another week i'll be strongly considering running 2wd this summer. I need a solid month of testing before I race, especially more so if i'm doing the AWD swap now.

I hate being under the gun as far as getting stuff done. Last year I was in the same boat because I had a trip planned to get the rx7 tuned, ran into some problems and was working till 2-3am every night after work trying to get it ready. I dont want that again. So if I dont have it soon the stock tranny is going back in, atleast till the end of sept.


The roof is not allowed to be anything other than steel. I've already filled the sunroof in with 16 gauge. Thanks for the thought though.

This post has been edited by czwalga: Feb 10, 2011 - 10:19 AM

Hmm well good news. R&L carriers called me the tranny is being delivered tomorrow. Seems everytime I start getting really frustrated I get the call like an hour later. Happend twice.


So yeah, I'll probably get the engine in this weekend, then start building the mounts sometime next week.