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Ian's 99 build thread

Old Apr 14, 2017 | 06:32 PM
  #861  
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Originally Posted by DNMakinson
@turbofan how did you get just a new OEM sock? https://www.miataturbo.net/race-prep...handers-89826/

Also, in above thread, Ian says he has an OEM sock, but pic on post 6 is not an OEM sock.
Scroll down in the thread and look at #16.

--Ian
Old Apr 14, 2017 | 06:33 PM
  #862  
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Originally Posted by codrus
Assuming you mean "Mazda", sure they do, I bought one. Looks like it's part # BP4W-13-ZE1 (at least, for an NB1, didn't check other years). "Filter, fuel pump."

I swapped out the one that had come with my Walbro for a new OEM one back when I was first investigating this problem last summer (a few pages back on the build thread). The OEM sock is held open with a spring, the Walbro one is not. The OEM sock went onto the Walbro input just fine, no rattling. Haven't tried a DW pump.

It didn't make any difference in the fuel starvation, though.

--Ian
OK. Local Mazda dealer told me not. Thanks. But if it didn't help you, I guess I won't bother.
Old Apr 14, 2017 | 06:46 PM
  #863  
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FWIW, I never followed up in that thread... I thought putting in an OEM sock fixed my issue, but it didn't. It got a bit better, but still can't go below 1/4 tank. Hard left handers, no powah.
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Old Apr 14, 2017 | 08:38 PM
  #864  
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I think you should both add a hose extension on your return line. The pipe is easy to cut with a pipe cover. slip some hose over it and run it down to the sock.

2 cases of starvation, both using the same method of return.

It may not solve it. But its a logical explanation.
Old Apr 14, 2017 | 09:37 PM
  #865  
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Originally Posted by aidandj
I think you should both add a hose extension on your return line. The pipe is easy to cut with a pipe cover. slip some hose over it and run it down to the sock.

2 cases of starvation, both using the same method of return.

It may not solve it. But its a logical explanation.
It makes it a PITA to reinstall the stock FPR, should that ever be necessary for... regulatory reasons.

--Ian
Old Apr 14, 2017 | 09:38 PM
  #866  
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AN -6 Fuel Rail Delivery Regulator Adaptor Fit Mazda Miata MX5 NA NB Series | eBay
Old Apr 14, 2017 | 11:00 PM
  #867  
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It does make sense that Mazda added that little piece of hose beneath the FPR for a reason. That fitting and a few inches of hard line would mimic the factory return.
Old Apr 14, 2017 | 11:02 PM
  #868  
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I actually have one of those I was going to use before I built my own fuel rail. Good quality. I spent more on a black one. Saving it in case my diy fuel rail leaks
Old Apr 14, 2017 | 11:44 PM
  #869  
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OK, ordered one of those fittings and the next time I have the fuel tank open I'll put it in.

I picked up a set of the directional rotors from Andrew yesterday and started putting them on.

Close up of the cracks:





Checking the hole spacing on the hats. They all came in within 0.008 inches, which seems pretty good.



Directional rotors.



They are a lot meatier than the cheap ones. That's more heat sink mass (good), plus it also means the inner edge the pad won't rid over the gaps and the attachment tabs, which was something that someone on another forum had expressed concern about.



--Ian
Old Apr 14, 2017 | 11:53 PM
  #870  
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Get another fuel pump/level assembly from the junkyard and wrap it up.

Maybe you guys should be running slightly narrower pads that don't ride over the gap.
Old Apr 15, 2017 | 01:45 AM
  #871  
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Originally Posted by sonofthehill
Get another fuel pump/level assembly from the junkyard and wrap it up.

Maybe you guys should be running slightly narrower pads that don't ride over the gap.
I'm not sure what another pump/level assembly would do for me?

Narrower pads don't really exist.

--Ian
Old Apr 15, 2017 | 01:50 AM
  #872  
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And, two directional track rotors assembled.



Now I just need to find the time to go to another track day to test them.

--Ian
Old Apr 15, 2017 | 02:00 AM
  #873  
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Originally Posted by codrus
It makes it a PITA to reinstall the stock FPR, should that ever be necessary for... regulatory reasons.

--Ian
An easy swap for "reasons"?

Maybe machine the pads a bit?
Old Apr 15, 2017 | 02:07 AM
  #874  
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Originally Posted by sonofthehill
An easy swap for "reasons"?

Maybe machine the pads a bit?
Oh, I see. Nah, the $20 fitting is simpler and it means fewer parts I have to keep track of on the shelf.

Machining pads sounds like a really messy, ugly job. The directional rotors are broader, so the existing pads should fit on them just fine.

--Ian
Old Apr 15, 2017 | 02:08 AM
  #875  
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Sounds good
Old Apr 17, 2017 | 02:11 PM
  #876  
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Originally Posted by aidandj
I think you should both add a hose extension on your return line. The pipe is easy to cut with a pipe cover. slip some hose over it and run it down to the sock.

2 cases of starvation, both using the same method of return.

It may not solve it. But its a logical explanation.
Agreed.

Name:  CamaroFuelPump.jpg
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See the short piece of black hose after the regulator? I'm sure Mazda put it there for a reason.

(Ignore the random extra crap in the image, its from some guys Camero engine swap thread on M.net)
Old Apr 17, 2017 | 02:12 PM
  #877  
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WTF is that. Sock looks like a shriveled up dick.
Old Apr 17, 2017 | 02:14 PM
  #878  
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Originally Posted by EO2K
(Ignore the random extra crap in the image, its from some guys Camero engine swap thread on M.net)
Originally Posted by aidandj
WTF is that. Sock looks like a shriveled up dick.
Read n00b.

Here, I cropped it for you so you wouldn't get distracted





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Size:  526.0 KB

^^ FaeFae fingers in this one
Attached Thumbnails Ian's 99 build thread-aidan_crop.jpg  
Old Apr 17, 2017 | 02:15 PM
  #879  
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Edit came too late

Old Apr 17, 2017 | 02:20 PM
  #880  
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Wait more than 0.003 seconds before responding and you won't have this problem



(Its surprisingly difficult to find a pic with the stock setup with the hose attached)

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