Hi Guys I dont have my kit yet , available date is April 26.
So I am wondering if there is enough room in front of the fire wall to build a custom Fuel tank, Large enough to hold at least 10 useable gallons?
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Hi Guys I dont have my kit yet , available date is April 26.
So I am wondering if there is enough room in front of the fire wall to build a custom Fuel tank, Large enough to hold at least 10 useable gallons?
For the "R" I looked at this trying to get a fuel cell built and we tried many ways, you can get a tank in the triangle area (as there would be issues using the other areas and getting useable fuel in those areas) but the most we could get was 1800 cubic inches and that's about 7.5 gals and of that maybe 6-6.5 gals would be useable. I'm not too keen on having a tank up front racing. I don't know if the S is different, I imagine so as you don't have the front roll cage hoop and that may make a difference
Last edited by FFRSpec72; 04-16-2014 at 06:01 PM.
Tony Nadalin
2018 SOVREN Big Bore Champion
2015 SCCA Oregon Region VP3 Champion
2012 ICSCC ITE Class Champion
FFR MkII Challenge Car, Spec Racer, Street Legal, SCCA, ICSCC and NASA Racing
818R Build in progress
Check Xusia's thread, he's working on a design. He might have started another thread here to, but his build thread says some stuff about it.
Frank
818 chassis #181 powered by a '93 VW VR6 Turbo GT3582R
Go-karted Aug 5, 2016 - Then May 19+21, 2017
Tracked May 27/July 26, 2017
Build time before being driveable on Sep 27, 2019: over 6000h
Build Completed Winter 2021
I looked at the 818e build thread at the battery storage box in the front. With the batteries he has, the calculated cubic inches was a bout the same at 1789 Cubic inches. Unless we can go higher in height, but this is at the bottom of the holes in the fire wall for the shift cables. Thanks for the leads. Don
Tony Nadalin
2018 SOVREN Big Bore Champion
2015 SCCA Oregon Region VP3 Champion
2012 ICSCC ITE Class Champion
FFR MkII Challenge Car, Spec Racer, Street Legal, SCCA, ICSCC and NASA Racing
818R Build in progress
Hi and welcome DMC7492! I have designed a tank - and a method of installation (from the bottom) - that holds ~10 gallons. It fits nicely in the space and is the same 10" in height as the FFR tank so you can use the FFR solution for the fuel pump and sending unit. There is space to go as high as 12" (maybe more with some additional work), which would hold about ~12 gallons. I got side tracked working out my seating arrangement or I'd have a template to show you. I'll post all my work on this when I get to it, but if you want to know more before then, I'm happy to share what I've done/learned over the phone. Just PM me with a phone number.
Have you seen the 818 Registry on Google Maps?? https://www.google.com/maps/ms?msid=...a=0&dg=feature
Want your 818 added to the Registry? https://docs.google.com/forms/d/1zmF...rNCY4/viewform
Last edited by Bob_n_Cincy; 09-10-2014 at 01:10 AM.
At 6'4" I need the extra space and its one of my concerns for this kit. Im really interested in the idea of a front tank. So by removing the tank from behind the seats are you sitting straight up to get the extra leg room?
Frank
http://www.ebay.com/itm/RRC-12-Gallo...-/251237610432
Would something like this fit and cradled from underneath?
Frank
Tank.JPG
Would something like this work? Its 12"x18"x12" would this fit from underneath?
Frank
Tony Nadalin
2018 SOVREN Big Bore Champion
2015 SCCA Oregon Region VP3 Champion
2012 ICSCC ITE Class Champion
FFR MkII Challenge Car, Spec Racer, Street Legal, SCCA, ICSCC and NASA Racing
818R Build in progress
Hi Frank
My son is 6'3" 260 lbs.
I did a custom front tank.
The 12"x18"x12" tank you mentioned above would fit with no problems. You do have to cut out the battery tray bars and replace them to get the strength back. I review this with FFR before I did it.
Check out post 145 on my Build thread for more info. http://thefactoryfiveforum.com/showt...8S-Build/page4
Bob
Last edited by Bob_n_Cincy; 09-10-2014 at 02:00 AM.
Bob, Thx that looks great very nice. Never 100% safe but I actually like the idea better than the tank next to the motor and gives better protection to the driver.
Thx, Frank
Tony, I feel comfortable now about fitment, your info on MKII Challenge Car vs. 818 R, can you fit was very helpful.
Thx, Frank
Just remember, in a R you are moving the cell out of the cage area (so less protection), also no matter were you place the cell I would suggest you put a rear firewall in (between cell and engine). I'm sure you will weigh all the pros/con and come up with the best solution for your build and usage.
Tony Nadalin
2018 SOVREN Big Bore Champion
2015 SCCA Oregon Region VP3 Champion
2012 ICSCC ITE Class Champion
FFR MkII Challenge Car, Spec Racer, Street Legal, SCCA, ICSCC and NASA Racing
818R Build in progress
Just food for thought. With the Boyd tank, the firewall is moved back about 3 inches and results in a relatively steep seat back angle. Moving the firewall further might get uncomfortable in the long run. I forget who, but someone was working on a pedal box mod to move the pedals forward a bit. In the end, that may be a more comfortable a solution. I point that out, to keep that in mind as you consider front fuel tanks that could preclude the option of a pedal box mod. I'm just short of 6' with a 32" inseam. I'm pretty comfortable with aftermarket Recaro seats, Boyd tank. (W/3" firewall move), no pedal box mod for reference.
Rich
818S in progress. 2007 WRX sedan donor.
Powered up: 7-8-14, First Start: 7-20-14, Go kart: 8-19-14
Got to look at the kit today! "Triathletedave" Dave invited me over to see his 818s build and nope I'm not fitting in a stock configuration... So my tank is going in the front. If only they stretched the kit about 4". I would recommend any big and tall guy to test fit first...
Was very impressed with the kits build quality and was equally impressed with Dave's progress with the kit. Thanks again Dave!
Frank
The most important things in the world have been accomplished by people who don't give up and have just kept on trying...
Hi guys I am making progress on the front tank, now to mount the filler tube. I need a picture of some body's right front fender area similar to this picture, I need to figure if the filler pipe should run below the frame tube or above and at which angle to aim at the gas cap in the fender. Behind the wheel and in front of the door.
Can some one. With their body installed snap a few pictures of this area. To help the gang? Thanks Don
image.jpgimage.jpg
818S/C : Chassis #25 with 06 WRX 2.5 turbo, ABS, cruise, PS, A/C, Apple CarPlay, rear camera, power windows & locks, leather & other complexities. Sold 10/19 with 5,800 miles.
Mk3 Roadster #6228 4.6L, T45, IRS, PS, PB, ABS, Cruise, Koni's, 17" Halibrands, red w/ silver - 9K miles then sold @ Barrett-Jackson Jan 2011 (got back cash spent).
How many gallons in your tank? DMC7492
Dan
818S #17 Picked up 8/1/13 First start 11/1/13 Go Kart 3/28/14
Xusia did one that was similar and I seem to remember 11-12 gallons. his was installed from the bottom. I assume DMC is installing from the bottom as well?
I'm still thinking about this option. Maybe as a later upgrade.
Harley
Bought 2002 Donor Jan 2014
First Start Jan 18, 2015
First Drive Feb 14, 2015
818S #22 Candy Blue Frame, Front Gas Tank, 2.5L Turbo, Rear radiator, Shortened Transmission, Wookiee Compatible, Console mounted MR2 Shifter, Custom ECU panel, AWIC soon
My Son Michael's Turbo ICE Build X22 http://thefactoryfiveforum.com/showt...rts-818S-Build
My Electric Supercar Build X21 (on hold until winter) http://thefactoryfiveforum.com/showt...e-Build-Thread
Hi guys, the pictures were what I was looking for. I went underneath the frame for the fill tube, just pressure tested and now to cut the hole for the sending unit and the aeromotive fuel pump.
My calculated volume is 12.8 gallons. However there is internal baffling so it will probably come in around 12 gallons.
It does install from the bottom an remove able frame and a aluminum plate are underneath the tank.image.jpgimage.jpg
Looks very good Don. I'm going to copy your under tank steel. I was just was going to mount a large trapezoid plate. Your steel (M Bracket) looks much better in compression.
Keep thinking outside the box.
Bob
818S #22 Candy Blue Frame, Front Gas Tank, 2.5L Turbo, Rear radiator, Shortened Transmission, Wookiee Compatible, Console mounted MR2 Shifter, Custom ECU panel, AWIC soon
My Son Michael's Turbo ICE Build X22 http://thefactoryfiveforum.com/showt...rts-818S-Build
My Electric Supercar Build X21 (on hold until winter) http://thefactoryfiveforum.com/showt...e-Build-Thread
Hi Bob this is the plate I put between the tank and the steel M.
image.jpg
__________________________________________________ _____________
That man is no fool, who gives what he cannot keep to gain what he cannot lose__________________________________________________ _____________
I'm not talking about fuel sloshing unbder G's... it's the weight difference between a full and empty tank. In the middle of the car the weight distribution won't be significantly affected by how much fuel is in the tank, but when the tank is between the front wheels, the wet vs dry weight distribution will be shifted significantly forward. It's probably not an issue for a street/autocross car, but for long/endurance racing, I would imagine that location could pose issues with trying to balance handling as the front end lightens up as you burn through the tank.
This is a modification primarily for space considerations for taller drivers. From what I can tell, the adjustment to weight distribution would be a negative, if anything. Seems fairly well established that a little rear bias (around 60%) is better. This also moves the tank from the center of the car to directly between the front tires (thus increasing the moment of inertia). Again, not saying this is going to be huge and there are lots of other factors, just saying it shouldn't be considered as a performance improving modification.
Since I looked at this a long time ago.
The CG of my front tank is only a 8" behind the front axle.
My front tank holds 14 gallons x 6.3 = 88 lbs
The front end of the 818 is coming in about 700 lbs without battery.
So 88/700 = 12.5% (+/-6% from 1/2 tank) load change on the front axle.
88 lbs on my car will change the ride height by 3/16"
Our front axle load also changes by 100 lbs with me sitting in the passenger seat.
Bob
PS: My tank is fully foamed to prevent sloshing.
.
818S #22 Candy Blue Frame, Front Gas Tank, 2.5L Turbo, Rear radiator, Shortened Transmission, Wookiee Compatible, Console mounted MR2 Shifter, Custom ECU panel, AWIC soon
My Son Michael's Turbo ICE Build X22 http://thefactoryfiveforum.com/showt...rts-818S-Build
My Electric Supercar Build X21 (on hold until winter) http://thefactoryfiveforum.com/showt...e-Build-Thread
I did a search on front fuel tanks. Some one already has done this...Bumping thread there seems to be another front tank thread started but these might need to be combined.