When do you need a twin fuel pump?

B&W_Evader

Oh... and I guess we all know the the MT is faster now too.

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solidus

Phunk as much as it's gonna hurt I have to replace my whole S1 return with a new one. I've been waiting for the twin to show up on your site so I can add it to my fuel system budget. Can I get an idea on the price and availibility. No pressure, I just got reality checked with 10-12 weeks on an engine build and I was all giddy about just ordering it and waiting two or three weeks. Yeah No.

phunk

The twin pump is $550 without pumps. It comes with various fittings and attachments required for installation. (A set of 3x 6AN in/out fittings, a 6AN o-ring plug for single hose output configuration, and a QD adapter for stock feed line as return line use).

There is a pump install kit option for $55. This includes new pump strainers and PTFE hoses and clamps for installing your pumps to the assembly. It is available in 3 different configurations depending on the pumps you want to install (they can have different hose barb diameters).

Then pumps are sold individually. I assume most people will want to use whatever pump they are already running and then acquire one more either through us or anywhere.

Also, an optional thing we will have on the site, are Holley Hydramats that you can attach to the bottom of one or both of the pumps. They are pretty expensive, like $160 or so each, so I dont expect them to be popular. So far the reports I am getting back is that the twin pump is not experiencing increased fuel slosh starvation issues over the stock pump setup. This is probably due to the pressure side jet-pump we made for these twin pumps. It is recovers ~85LPH of fuel from the driver side of the tank at idle and more when you go into boost. On top of that, We have a sheet metal baffle with trap doors designed for this twin pump. We have not made any yet, its a future option / add-on. That is what the 3 black screws with aluminum washers you see passing through the top will be for.

Availability.. I think there is one left here right now. I have materials on hand for a large production run and sometime in February we will have plenty of them on hand.

Running installing with our current S1 external filter fuel systems, you would use just one of the 2 6AN outputs. The twin pump output is a sort of manifold, so you get fuel from both pumps regardless of using one or the other or both of the outputs. We last second decided not to use a 8AN single output for the sake of installation. 8AN would not really clear the access panel cover. Also, many customers already struggle to get a 6AN hose between the tank and chassis. So our first fuel line upgrade kit for the twin pump (which will be part of our new S2 lineup coming this year) will be a twin 6AN output line kit that merges into the single 8AN inlet of the external filter we provide in our kits.

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solidus

Thanks man, that's not gonna hurt as much as I thought. Talk to you in about 3 weeks about this and an S1-SE.

VSS370z

I orded your external filter with lines to add to my S1 fuel system for like a year ago and its been sitting in my room all that time and for some odd reason it cross my mind Charles would come up with something again to upgrade the fuel system. Sshh man you need to ✋ with the upgrades 😂😂.

phunk

at least this one can be used in compliment to the parts you still have waiting for install, rather than making them obsolete!

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VSS370z

Haha true! The only part that it would be obsolete is the Top Hat which i also have in the package!

phunk

https://cj-motorsports.com/products/twin-fuel-pump-370z

page is up on the site for anyone interested!

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cupcakez

Omgosh.

Tax Return Money = New 370z Twin Fuel Pump System?

Oooorrr....

TopgunZ A2A kit? xD

Which one .... choices choice... ! O__O

phunk

Id vote to start with the A2A kit! With a return kit and single 450 you can get pretty high in the power before needing to add a twin pump.

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cupcakez

Heard and duly noted!

Only thing is... I am using the stock stillen fuel pump that was swapped out for the OEM fuel pump.
So I would need to get a 450 or 485, and then an S1-SE return kit BEFORE needing a twin pump then, correct?

phunk

Yes if you do the S1.SE + 450 pump that will take you really far before needing a twin pump. 700whp in turbo cars. Should be at least 600whp for supercharged cars.

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Jayhovah

Hey cupcakez - I sent you a PM. I have some brand new CJM goodies that I decided not to install and am looking to sell along with a new Walbro 485/450.

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cupcakez

Gotcha.

So the order in the next few upgrades I plan to get should be like this?:

1st Upgrade: TopgunZ A2A Kit

2nd Upgrade: S1-SE + Walbro 450 Fuel Pump + Injector Dynamics 1300x

3rd Upgrade: 928 Motorsports Supervortech V3 SCi Impeller Upgrade

4th Upgrade: Triple Pulley Swap for increased spinning

5th Upgrade: Level 10 Bullet Proof 370z Transmission Package

6th Upgrade: F.I. 7 AT Billet Aluminium Flex Plate (Cause I have 7AT)

7th Upgrade: Tune from Sebz in Socal. Will personally drive down there to get a tune from him one weekend
===============================================

My current upgrades:
- KW V3 Suspension
- Stage 3 Import Parts Pro (IPP) Custom Built Engine @ 11.0:1 Compression (Currently being built right now) --> Rated up to 850 WHP
- Quaife LSD
- Custom Exhaust with Magnaflow Muffler (Although I do plan to go back and get 3" down pipes later down the road)
- OEM GTR Spark Plugs


Does this sound like a logical order and something that could work? If you guys have suggestions on the order change, please tell me! I would love to hear what you all have to say

Any thoughts / opinions / feelings / comments / questions are greatly appreciated by the 370z community. This community is by far the best support I have ever found and have so far that is helping me with my journey to building a fast car So thank you everyone!!! =]

cupcakez

Replied. ^^