smart.
what's your fuel setup? I would think at next to no pressure the draw on the lift pump wouldn't be that high.
I don't have one of these at my disposal, however a DW200 for the lift pump and install kit is less than $100
Visit our community sponsor
smart.
what's your fuel setup? I would think at next to no pressure the draw on the lift pump wouldn't be that high.
I don't have one of these at my disposal, however a DW200 for the lift pump and install kit is less than $100
Last edited by longislandwrx; 03-30-2016 at 02:15 PM.
A well stocked beverage fridge is the key to any successful project.
I totally missed Bob's post.
That could be an option, but I don't have an OEM assembly anymore. I would wonder what would happen if the pump is in the surge and the return is clogged and it goes to relief, do you lose all jet function and thus all in pumping action? The boyd pump assemblies are a little expensive, but I have the ability to machine my own top caps and such so I can buy the $100 pump vs the $350 kit with top.
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
Tony Nadalin
2022 SOVREN Championship
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
The lift pump can be a low pressure pump just big enough to keep the surge tank full and could be at 80% capacity of the motor's needs since there is no way the motor could stay at full fuel demand for more than 15 seconds unless you're at Bonneville..
Wayne Presley www.verycoolparts.com
Xterminator 705 RWHP supercharged 4.6 DOHC with twin turbos
I saw k&n had a low pressure pump, for about $50
http://www.amazon.com/K-N-81-0403-Fu.../dp/B00OXZD2OY
not sure if it's enough flow.
A well stocked beverage fridge is the key to any successful project.
Wrong ones. The ones I'm referring to are the ones used in OEM fuel collectors. They run well for years. I'll try and find an example already in production and available.
As far as the second fuel pump goes, I'd run if off of a relay with the coil connected to a WOT or boost switch. No speed controller needed.
818C | Kit delivery: 3/19/16 | Status: Powertrain installed
Daily: 2014 CTS-V - Fat and slow
I just looked into it, apparently they're a variant of the old quadrajet accelerator pump check valves. You can find them by searching for 'umbrella check valve'.
818C | Kit delivery: 3/19/16 | Status: Powertrain installed
Daily: 2014 CTS-V - Fat and slow
The jet pump has ZERO moving parts it is a venturi action and is proven on all the Subaru's, here how it works.
When you replace your factory fuel pump to large capacity type.
The factory Jet pump will be insufficient and the flow will become blocked.This will lead to failure of the regulator or the vehicle will loose performance causing fuel pressure to rise. By replacing your factory Jet pump to the Sard Jet Pump Killer, the vehicle will have a steady flow of fuel.
Jet Pump Fuction.
The Saddle Type Fuel Tank has two Rooms which is divided into 2. A and B as show on the diagram. This Type of tank is mainly used is rear wheel and 4WD vehciles. When the fuel starts to decrease, it will remain in the B department of the tank. The Jet pump uses the flow rate of the returning fuel from the engine and due to the Venturi effect, pumps the fuel from the tank B and transfers is to Tank A
jetpump.jpg
So my question is do I need to worry about having two 320 pumps wired in the stock system? The Boyd tank pump shouldn't have any resistance since it is filling a surge tank with a return so no real pressure.
Second question. When my tank is full (could see the gas in the fill tube) the Guage only reads 3/4. After using 5 gallons it reads 1/4 of a tank. How do I get my fuel level to read propperly?
Nolan
65 coupe Gen 3 "Phoenix" build
http://thefactoryfiveforum.com/showt...032#post297032
818 s (with r windscreen ) 350 rwhp. Registered and street legal (SOLD)
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
Got a quote this morning. $375 for the tank. Going to make my own pump mounts (and figure out what pumps I need). That's a 14 gallon tank with a built in surge/swirl tank on the side plus baffles in the middle with a single 1" hole in each baffle that can have check valves added to create a collector tank.
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
375?? That is so cheap for a perfect semi-big tank! Lucky you.
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
Ok now how much is this going to cost to get through zdm? Thats the real question here.
That's not bad at all! I am going to hold off finishing my brake lines because I think my tank is coming out.
is it taller than the FFR tank?
Last edited by longislandwrx; 04-12-2016 at 06:51 AM.
A well stocked beverage fridge is the key to any successful project.
Nothing? lol. I'll make a copy of page one of my drawing and post it up. You should be able to order from Boyd directly. Page two of the print shows some dimensions for bolt mounting patterns that Boyd gave me, but might be proprietary, so I won't share that part.This isn't something that is really in my wheelhouse and I'm not sure I could produce them for much (or any less) after I pay someone else to do the welding. The only area I could provide something is fuel pump mounts.
As designed, the tank needs two of the Boyd 41001 EFI pumps which cost $349 each. The Aeromotive 340 pumps themselves are only about $120 each so I plan to make my own top plates/install kit. His install kit essentially costs $229. Depending on how much interest there is I could offer these if pricing is any better. Tank also has two 1/2" NPT fittings welded to the top. One is used with the FFR provided rollover valve, the other will be used for my filling vent.
As quoted, complete, the tank was $375, sending unit was $48 (I bought this), and pump kits were $698 (for 2), total of $1,121. As mentioned above, I skipped the install kit so my cost will be $375 + $48 + $240 (2 pumps) + my own time to make install kit, total of $663. The regular Boyd 818 tank is $573 with a sending unit and pump.
It is the same height as the original FFR tank and same front/back depth as the top. The original tank angles out at the front. I got rid of that. This tank will not work with the new firewall.
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
Tony Nadalin
2022 SOVREN Championship
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
Indeed it is. If I didn't have the ability to make my own EFI mounts and had to buy them I would not have gone this route. As is, I'm coming in $460 under everyone else's price. It still ends up being cheaper than buying a radium surge tank for $600 (without pumps) in conjunction with whatever tank you get.
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
2 fuel pumps? Why?
But in the end if my FFR tank leaks and I can't fix it properly, this Boyd tank will have all the holes (vents, filler, etc.), no leaks, 1gal more and a try reading level sender. It's all about FFR's tank leaking, now (for me).
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
It has a built in surge tank. One pump feeds the surge tank, the other pump feeds the engine. The surge tank is a smaller footprint so 1 gallon of gas gives a much higher fuel level than it would in the large tank. If the large tank pump starves because you're in a corner the surge tank pump is still completely covered and has a full gallon+ reserve to keep you going until the main pump picks pack up.
http://www.nukeperformance.com/techn...low-chart-faq/
Like this, but only 1 pump in the surge tank and the tank is built into the main tank.
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
Guys I want to chime in with an update on Boyd Welding. Their issue with vendor status was the result of an accounting snafu on our part, and not due to any failings on the part of Boyd Welding.Originally Posted by David Hodgkins
I'm currently working on reinstating their banner to the top of the site where it belongs.
FFR 5369 Pin Drive, IRS, Trigos, Torsen, Wilwoods, FMS BOSS 302 "B" cam , Mass-flo. CA SB100 (SPCN) Registered
Delivered 4/23/06. "Finished" 4/2012 (still not done!)
Good to hear, though I would hope it was a "rare" mistake rather than being a situation normal all f..... Up.
818S Chassis #288 2.5L 323hp
Ordered: 9/19/14 Received Kit: 11/2/14 First Start: 5/31/15 First Drive: 6/7/15 Registered: 3/10/2016 Completed: 2/10/2017
Status: Complete Build Thread Sold 9/22/2017
joshuajach.com
I got rid of two things.
1: The front of the tank is angled from top to bottom where the top is narrower (front to back) than the bottom. I got rid of this and made it a flat front tank.
2:The sides had some cutouts where the tank was 1/2 the height. I saw no real reason for this in this application.
There was a bit of a back angle on both sides of the tank where the back of the tank was narrower than the front. I got rid of this on the passenger side and the driver side. For the driver side, the tank is ~2" or so from the frame so that anyone who ran lines through there wouldn't have to change if they wanted the same design.
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
818S Chassis #288 2.5L 323hp
Ordered: 9/19/14 Received Kit: 11/2/14 First Start: 5/31/15 First Drive: 6/7/15 Registered: 3/10/2016 Completed: 2/10/2017
Status: Complete Build Thread Sold 9/22/2017
joshuajach.com
yes but it was cheaper to make if it was thinner and vertical
Dan
818S #17 Picked up 8/1/13 First start 11/1/13 Go Kart 3/28/14
Which is what I did. Adding in the angled part (starting from a thinner rectangle) added 3 gallons (so 17 instead of 14). 17 is a lot of weight. It would also make welding in the internal baffles a pain.
It's this minus the triangle front.
Here is a link to a modified version of the drawing. I removed the detail showing the bolt pattern for Boyd's EFI sending plate. Dave sent me a screenshot of the pattern but I didn't find it listed anywhere. I'm not sure if it's supposed to be a secret or not so I'll err on the side of not telling others. If you bought the tank you could either buy his EFI setup, or make your own. It wouldn't be hard to make a pattern from the top of the tank (or using one of his gaskets available for ~$11).
https://drive.google.com/file/d/0B7n...ew?usp=sharing
I posted more pics in my build thread I think, but I'll repost them here.
How I modified the filler:
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
Here's the print:
https://drive.google.com/file/d/0B7n...ew?usp=sharing
A few notes (most are covered above):
This does not work with the new firewall
The 1" diameter holes should be 1" +.020-.000 (mine came in undersized and was annoying to fix)
If you don't want to use check valves just ask Boyd for their standard pump baffle
You will need two pump mounting under rings, two pumps, two pump mounting plates, and two gaskets
You will need to hardwire the pumps to the battery. Run a ground to both pumps and run a positive line to a relay and the output to the pumps. Trigger the relay with the two lines that originally fed the single pump.
Edit: I removed the dimensions for Boyd's EFI pattern on this version of the print. I don't know if it's anything proprietary. Boyd did share it with me, but sent me a screenshot not a publicly available print. He will recognize the EFI patterns and knows what to do.
Last edited by Mechie3; 07-05-2016 at 09:15 PM.
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
What's the price tag on this setup? Looks pricey but well worth it.
As quoted:
tank: $375
sending unit: $48
pump kits: $698 (for 2 A340 pumps),
Total: $1,121.
As mentioned above, I skipped the install kit so my cost was
$375 (tank)
$48 (sending unit)
$143 (2 wablro pumps)
$60 (material) + my own time to make install kit
Total of $626.
The regular Boyd 818 tank is $573 with a sending unit and pump.
You can always order just the underrings from Boyd and make your own top plates (just 1/4" plate with holes, cut to shape on a bandsaw).
Last edited by Mechie3; 07-06-2016 at 10:21 AM.
Zero Decibel Motorsports
Check out my new website!
www.zerodecibelmotorsports.com
www.facebook.com/zero.decibel.motorsports
Has anyone had issue with the bulk head aluminum does not clear where the filler tube comes in? Just mocked mine up and the bulk head won’t sit flush on the floor because of it...
Guys,
As of Jan. 1 2018 Boyd is no longer a vendor. I won't close the thread, but just be aware. Not sure how I'll handle future threads yet; probably will allow "support type" threads but discourage "check out my new Boyd tank" types of threads.
Losing a vendor really hurts as we only have a precious few.
FFR 5369 Pin Drive, IRS, Trigos, Torsen, Wilwoods, FMS BOSS 302 "B" cam , Mass-flo. CA SB100 (SPCN) Registered
Delivered 4/23/06. "Finished" 4/2012 (still not done!)
Well that's a bummer, they had such a great Black Friday sale. Hope they reconsider.
Is there an aluminum tank available for the FFR Mk IV roadster?
Did anyone ever confirm if the Boyd 33 tank fits in the 818 with original firewall?
Dan
818S #17 Picked up 8/1/13 First start 11/1/13 Go Kart 3/28/14
I used the ffr tank for the first couple years, and didn't have any issues other then not knowing my actual fuel level. I just took my pump and level to orilleys if I remember. And matched up gaskets till I found a thicker one that sealed. But I just installed the boyd tank yesterday due to a massive setup change, but am curious how the boyd tank is holding up with those who have run e85? Being an aluminum tank I'm leery, but looks like people have been doing it?
E85 is no issue for the tank or pump that comes with the Boyds tank
Wayne Presley www.verycoolparts.com
Xterminator 705 RWHP supercharged 4.6 DOHC with twin turbos