CJM Road Race Fuel Pump, Production Round 4
 

References:
Conception to Production Round 1
Production Rounds 2 & 3
Ordering & Deposit Link

CJ Motorsports 370z Road Race Pump

http://nebula.wsimg.com/obj/NkJCQ0NF...hlMzM6Ojo6OjA=

With production underway, its time to make the 4th batch official.

The CJM 370z RRP functions as an in-tank fuel surge canister. It mounts inside the tank behind the driver's seat, and works in coordination with the factory fuel pump module (via in-tank hoses) that resides behind the passenger seat.

With over 50 produced and in-use, it is the only time-tested and proven bolt-in and reversible solution to fuel starvation in the 370z. It doesn't only reduce fuel starvation, it eliminates it. Until the fuel tank is so close to empty that fuel pick-up would no longer be a rational expectation, this product is customer proven to maintain fuel system pressure. Typical reports are that the vehicle can still be raced with the low-level-light active. While it is not entirely recommended to run the tank completely dry (since this will reduce the factory fuel pump's lifespan), you will now be given a choice to refill the fuel as you see fit.

The only component of the installation that remains outside of the fuel tank is the wiring to energize the fuel pump inside the Road Race Pump. There are no external fuel lines or canisters added to the vehicle with this solution.

The RRP, in standard configuration, holds a Walbro 255lph fuel pump. Its not a normal Walbro 255, it is a special model with a second stage. The second stage of this pump is a solid-state jet pump used for the RRP's self-filling feature. This means that, not only is the RRP surge canister fed by the standard fuel pump (on passenger side) as an ordinary surge canister is, but it also pulls in fuel itself from the driver's side of the tank.

A secondary function of the RRP is to over-flow surplus fuel back to the factory fuel pump module. This is to extend the pump life of the factory fuel pump by assisting in keeping it "wet" when it may otherwise be starving dry.

Please feel free to post any questions.

I expect to start shipping this batch by March. I included an ordering & deposit link at the top of this post. A reservation is required to *guarantee* a unit, but at this point it is unknown if the demand will be great enough to require the reservations. A full payment is also an option, but is not required until your order is ready to ship.

I would like to address a couple very common questions about the RRP.

Q: Is the RRP E85 compatible?
A: Yes. Like all fuel system components, the fuel pump within the RRP and the fuel lines added inside the tank to interface it, may experience a decrease in service life with E85 in some conditions. However, there is no need for exceptional/additional concern with the RRP.

Q: Is the RRP compatible with my Return Fuel System
A: Yes, the RRP is essentially irrelevant to a RFS conversion, and installation of a RFS and RRP have no overlap. However, take note that the RRP's 255 will be the pump sending fuel to the engine & rails, and whichever pump is in the factory module will only be sending fuel to the RRP canister.

Q: Can the RRP support high power?
A: Out of the box, the RRP will support around 500-550rwhp with gasoline, or 350-375rwhp with E85. A little more with a return-fuel system upgrade. The RRP includes an unused secondary fuel pump position for when the engines fuel needs are greater than the included 255 can support. This secondary position can accommodate another 255, or a 340, 450, or any other fuel pump with the same main diameter as a Walbro or direct-fit replacement. Once the RRP has been converted to a twin pump, it would be recommended to upgrade the factory fuel pump module with a 255 or perhaps even a 340.

Q: Can I change the RRP's 255 to another pump?
A: Maybe. The RRP was designed to perform as well as it does by depending on the included special model Walbro 255's integrated jet-pump to activate a self filling function. To replace this special version of the Walbro 255 will defeat the RRP's self-filling ability (other than a small gravity check valve also built in to it). It is, to the best of our knowledge, untested and unproven as to how well the RRP will perform with its self-filling defeated. However, should anyone wish to try it, they would need to know that the fuel pump position the 255 resides in will not fit the larger 400/450 fuel pumps, just the single diameter pumps like other 255s, or an Aeromotive 340, or AEM, or other same-diameter pumps. There is also a hole under this 255 that would need to be plugged.

Q: Can the RRP be installed to a G37?
A: Unfortunately it cannot. A G37 fuel tank is much shallower than a 370z fuel tank, and this product is much too tall to fit. A custom G37 unit could be produced one-off, but it would require some leg-work of the customer (providing us with some measurements).

Reserved!

One quick question: is this special fuel pump thing new fire this batch or was that already in the previous ones?

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All previous batches as well!

Only a few cosmetic changes have occurred and in-tank hose construction has had a couple versions.

PM sent

Working on my build plan currently. I should be reserving one in the next week or two unless something changes.

reserved

4th round! I have been sporting this setup on track since the first batch. Even transferred it to a second car. Excellent product, excellent support from CJ. Give him your money!

Then buy a set of these. 3 Piece Long Reach Hose Grip Pliers

I really should get in on this.. Gonna have to talk to F.I. about labor for the install would be nice not having to cringe making a long right turn under half a tank.

I am in, reserve me one.

Phunk, I need to call you so we can talk fuel for a turbo upgrade in the future. I am thinking about doing all my supporting mods first, then the Turbo upgrade a year later. I am thinking of doing a 3 step upgrade. Fuel, LSD, and clutch/flywheel first. Turbo upgrade next. Then a year later, rods, pistons, and exhaust cams. That way I don't have to pull all the money out my butt at once.

So as I read the above passage, it would seem that the RRP would provide fuel to the engine even if the factory pump failed, is this correct? Could you run the RRP as a stand alone pump with a Hydra mat setup to scavenge fuel from the entire tank?

Thanks :tiphat:

I am working on a hardware kit to ease the RRP's high horsepower applications. I think I can put together a relatively inexpensive package to get it to function properly as a single pump with a Walbro 450/E85 pump in it so people can make it to 600-700hp without having to turn the RRP into a twin pump.

The RRP is self-filling from the drivers side of the tank, much like how the factory pump is self-filling from the passenger side of the tank.

If the factory fuel pump was removed, the RRP would lose its supply of fuel from the passenger side. This would cause it to have its own starvation side effects as it would not have any supply of fuel from the passenger side.

The RRP is a mostly closed canister, very similar to an external surge canister only it resides inside the tank. Anything attached to the fuel pump would also be contained within this canister... so if anyone devised a way to attach a hydramat to the pump inside the RRP, it would not really serve a purpose as the hydramat would not be exposed to any fuel outside of the RRP canister.

The RRP in its intended layout has proven to resolve starvation to the fullest... so I cannot say I see any purpose in trying to increase its function with a hydramat, as it already outperforms one.

Reserve payment sent ;)

Reserve payment sent. Decided to go with this rather than the AAM twin pump setup. Need proven solutions for my build :)

How long do we have to put our deposits down?

There wont be a deadline for it, it will just be used for the sake of guaranteeing a spot in the event that they are all sold before production completes (which is what happened in the last batches).

Thanks, I will put my deposit in later tonight.

Any time, no rush at this point. We are not close to running out yet.

If the pace doesnt slow down, they might actually end up being completed in January. I have a lot of the heavy work done.

I completly agree . I mostly only track the car and I don't encounter fuel starvation even when the low fuel lights turns on. And beleive me, I do track the car very seriously ...

Its been a while since I posted here so I thought I would put in an update.

Most of the parts are done. I think I will end up having them done before the end of January, and then we will only be waiting for anodizing. More than half of the parts are already wrapped up in a box ready to head out for anodizing.

So it looks like everything is ahead of schedule!

I blew my motor at the track last weekend. Fuel starvation seems to be a likely cause...can't wait to get this pump in as part of the repair effort!

Already put in my deposit. Sounds like these things will be ready early february. Looking forward to getting rid of fuel starve!

Okay, I have never suffered from fuel starve so far but I have been sufficiently warned and the cost is cheap insurance. I'm joining the CJM road race fuel pump team!:tiphat:

Just watched the video.. that is painful to see, I am very sorry that happened to you.

I hope so! Tonight I will be setting up the CNC to cut one of the last pieces. This weekend we begin the move to the new shop.. but my plan is to finish up the RRP parts before we unplug the CNC and put it on the semi truck, because once that happens it will probably be at least 10 days before its up and running again. I have 4 weeks to complete the move, so its not a big rush. We will be moving everything but the CNC and the air compressor until these parts are finished.

Welcome aboard!

Thanks! We're going to put a new (used) engine in and both this and the CJM oil pan will be part of the build. I'm aiming for maximum reliability, and a bit more performance, in an NA track-oriented build.

phunk, any updates?

The whole earlier-than-planned thing ran out due to the move delays but we are expecting to finish right on time as originally planned.

I was bombarded with orders which is of course a good thing. It just made it take almost a month to complete the move since I was doing administrative and packing/shipping 6-7 hours a day. I just got back with the final truck load and dropped off the keys from the old shop.

The CNC wiring is done and I flushed the cooling system and sump today and hope to be cutting by Thursday. 2 operations on 1 part to complete then it's off to anodizing the rest of the pieces.

Not to mention your superb customer service, baker told me whats going on with my setup. You guys are geniuses. Thankyou phunk


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How's the anodization coming along?

Right now our current goal is to get the parts to anodizing on Monday. We have a mountain of preparation work to do since this batch turned out so large.

So you say you've been a busy boy, uh? :D

That combined with every possible obstacle in setting up from the move!

Hello everyone.

We have an exciting update. Everything is finally back to normal around here and we are finishing up the batch. I would like to thank everyone for their patience and apologize for the delays resulting from the move. We flew right past a couple of our timeline goals due to surprise problems with our CNC equipment after the move. But we are now back in full production and the last operation is finally being completed.

We actually shipped out one RRP already to reservation #8 who preferred to not wait for anodizing.. and he is installed and running already! All the rest of them should be with the anodizer on Monday.

For anyone who wishes to complete their transaction, the page has been updated to accommodate:

CJM Road Race Pump, 370z | CJ Motorsports

You would select "Finish Payment" to cover the remainder due after your deposits. Due to our website automatically charging 13.95 shipping for each order, I have added the coupon code "rrpship" for you to use during checkout to cover the duplicate shipping charge. This code is entered on the second page of checkout that is titled "2: Shipping & Payment".

Our current goal to begin shipping is the first week of April, pending anodizing completion.

Just to be clear: NO FINAL PAYMENTS ARE DUE AT THIS TIME. You are welcome to complete your transactions whenever you wish. We just added the option to the website since we are close enough now that we are comfortable accepting payments.

Thanks everyone!

I am going to have to back out for now Phunk. I will let you know in the future. My car got re-arranged in the rear due to an idiot driver.

Payment sent