An externally mounted Bosch 044 pump is super loud and annoying unless in a surge tank.

I've used the 40 micron inline filter and have not had problems. I'm curious if it's injector specific you're referring to or in general?

 

I just remember reading a long time ago that a 40 or maybe it was a 30 micron filter before the pump was bad as it would cause a restriction. These pumps are better at pushing that pulling. When I referred to the injectors, that is if the filter was after the pump. Again, from my old research, a particle bigger than a certain size could be bad for injectors.

 

I hear what you're saying, theory is always different than actual application - especially with these old cars. I didn't base this setup on someone else's, I theorized it all myself. I'll post up pictures, a parts list, prices and a review when I'm done. I still have to buy AN hose that is correct (I accidentally ordered PTFE hose last time, which won't work with my fittings) and will order any other fittings I need at that time.

I saw that one FD build where the lines leaked, he fixed them, but then they leaked again and the car burned to the ground. I know Turblown build the motor for him, but he did his own fuel system. He tried suppressing it with a fire extinguisher he had in the vehicle but was unable to contain it. That would royally suck. I'll make double sure that they don't leak and are functioning correctly!

I'll run the 40 micron filter after the pump. If I want more protection I'll order a 10 micron to come after that one. I know I need a 100 micron before the filter as well, but haven't ordered one yet.

Every externally mounted fuel pump will be loud I think. If you mind the noise of a fuel pump in your rotary, your exhaust is too quiet

Did you run a 100mic before the pump as well with that setup?

I read that same stuff too. Too restrictive of a filter before the pump causes a pressure difference which can cause starvation issues since the pump isn't pulling enough fuel. They are better pushers than pullers, so 100 before and 10 after is the way to go if you want to be extremely safe.

 

Bosch 044 adapters to AN-6.


Here they are installed on the pump.


New toy Only used it once (not with that play sand, stuff is too large of a grain and is wet - I won't run it through the system).


Got one of these full kits as well, only missing one back bracket. So I'll be remaking copies of these kits with some small changes I believe

 

I picked up another chassis on Saturday night...1985 GSL.

There is less rust on this chassis than my red one. Which means that this one will be retrofit with the IMSA widebody kit and turned into a racecar. Another build thread for this one to come later.

Looks like she's sagging really bad in this pic, but in all honesty it wasn't doing terrible.










Interior is all stripped out.






I mainly wanted it just for the LSD rear end, but since it came with a clean title and has almost no rust on it. Screams for race car status!!!

 

Well that's an oxymoron..."FB race car"

Ohhhhhhhhhh

Lol jk

 

You owe the FC and FD's existence to all the IMSA wins of the FB's, just sayin

Pic of the new-to-me S4 TII rotor in a C weight that'll go into this motor build. It's sitting in Simple Green right now to clean off the carbon. There's also the water pump housing that I needed, since I sold mine to a buddy because his was broken. So now I should have all the hard parts I need for my motor! Next it's on to turbo stuff and other peripherals.


Big box o' fuel upgrade parts, just for fun

 

you're going to get annoyed of that external fuel pump.

Also, are you going to get a blasting cabinet or what?

 

It might be almost as annoying as your 4" exhaust, I'll have to see though If you're annoyed about a fuel pump whine then you're getting to old Maybe someday I'll be rich and afford one of those fancy surge tanks Elliot sells, but until then it'll be external! I'm not going to chop up a perfect GSL-SE tank to put it inside.

I'm going to build or buy a blasting cabinet eventually. Remember, I work in sheet metal now so I can build a bunch of that kind of stuff in the shop for next to nothing and as custom-fit as I need it to be I've only used the blaster once outside and still need practice. I also need a much bigger compressor with better CFM ratings. A nice Ingersoll Rand from Northern Tool will probably do the trick, around 30gal and 11 CFM will probably be my choice.

 

You'll see what I'm talking about when you turn it on. It's not about getting old.

 

I have a 80 gallon 14 cfm Lowes (Sanborn) 220v compressor and a cheap HF blast cabinet. My compressor still runs constantly at 100 psi. When it comes to compressors, big is never big enough. By the largest you can afford.

 

I'm upgraded my compressor. You can buy my 30gal one if you'd like? $250

 

Some used Racing Beat springs!
[/QUOTE]
Lol hey, my couch.

 

I found I needed a larger compressor and that bigger is definitely better. I sandblasted my car using a borrowed dual tank 150 psi compressor that might have been 7.5 gallons and ran off 120V, but barely. It ran almost continuously and my breaker panel could not handle the increased load, tripping the breaker every 60 to 90 seconds. What a pain. Had to station a "breaker panel watch" (middle son) who would reset the breaker for me so that I could finish the job.

So there are two lessons learned: 1) bigger is better when it comes to compressors - you can always dial it down if needed, and 2) ensure the electrical system can handle the increased load.

With that said, I decided if I could pull the money together I would get the 80 gallon HF dual stage compressor and upgrade my electrical in the garage. The HF compressor has great ratings and at $800 is a STEAL for a large two stage compressor. Other name brand two stage compressors are easily a minimum of 50% more.

I'm enjoying the thread and living vicariously through you - keep it up!!

 

Thanks for the advice man!

Lol hey, my couch.[/QUOTE]

Not sure what you mean here, that's at my house.

I'll have to wait and see, if it doesn't sell before I can get to it

That's crazy! I'll keep it in mind!

 

ProSport mechanical boost gauge.
S5 Turbo II turbo rebuilt and made into a hybrid with .60 trim wheels. I'll be tearing it down to see what it is exactly I'm dealing with, and to do a rebuild so I know all the components on the inside are good and fresh. It's a BNR Stage 3 I guess, but I'm not too versed on BNR turbos so I can't say that definitively.
3" downpipe that I'll be welding a wideband fitting on.
HKS huge air filter that I got with it, still not sure what I'll do with that

 

I have a walbro 255 externally mounted.

while you can hear the pump over the exhaust i like the sound.

 

Yeah, I don't mind that too much at all. If I really wanted to get rid of the noise I'd run a surge tank to submerge the pump and quiet it down a bit.

So I totally spaced and bought an S5 turbo manifold when the turbo I got is, in fact, an S4 hybrid turbo. I need to buy an S4 turbo manifold now and resell the S5 one that I bought, which isn't a huge deal.

Here's a pic showing the difference between the modified HUGE internal wastegate of this modified turbo compared to the larger-than stock one on my other spare exhaust housing.

 

Hmmm...if I recall you installed sound deadening to decrease sound? Perhaps it'll keep road noise out, but wouldn't the deadening material now cause the same issue with amplifying the annoying buzzing of the pump since the sound is being restricted from leaving?

It's just a theory. I am not sure so please someone correct me if I'm wrong.

Now the last video a member posted of his didn't really show the noise in the cockpit. Of course it's not as noisy at the front of the car with the engine noise all up in the camera :p.

Anyways, I was just trying to point out a few of my personal concerns to you. Once again, I personally do not like the continuous pump noise lol.

Quieter the better for me :p.

 

I have a s4 manifold that i can swap you for, I'm looking for a s5 manifold, lol.

 

No, that's definitely one of the ad pics i sent you when i was selling them haha. unless we have the same couch ! lol this build is sick man! sorry about past, hope we can put it behind us. you did get the better end. im in debt now to my friend because you reported his paypal. but i aint hold no grudge. love the build!

 

If you want to do a swap I'm totally down!

No, it's not a picture from you. I took it when they arrived at my residence.

Anyways, got the turbo apart and calculated the trim on it.























Trim Calculation:
[(Inducer)^2/(Exducer)^2]*100 = Trim

Cold Side = [(57.6)^2/(76.1)^2]*100 = 57 trim
Hot Side = [(54.1)^2/(63.5)^2]*100 = 72 trim

A259 is stamped on the cold side compressor wheel.

Anyone have any insight into this turbo for me? I've never dealt with trims and A/R before, I need some learning. Google has all the answers but hearing from other RX-7 guys is always appreciated!

 

Awesome, I'll send you a pm after work

 

going from here Turbo Compressor Chart

i'm going to say its a super H compressor wheel, with a clipped stock turbine wheel. compressor is a tad tricky as there are a few wheels that are really close, so it could be a T04E 57 too, although its not as common.

give or take its good for around 280-300rwhp@12psi. you need about 900x4 injectors, or equivalent. larger intercooler than the T2 stock unit, 3" exhaust, and then you should be good to go

 

For what its worth my Bosch 044 is mounted pretty much in the stock pump position and it doesn't bother me. If you can hear that over everything else that is going on you're doing it wrong.

Build is looking good dude keep it up.