DuAl FeDe fewyl RaILS 4 da WIn? - Page 6 - Miata Turbo Forum - Boost cars, acquire cats.

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Old 07-09-2008, 04:36 PM   #101
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OMG this is like NEVER going to happen. The latest plan is thur or friday sometime. Maybe this weekend. Sigh. The worse part is having to store albert's fuel rail for months while he's gone, and I only get to see him on those awkward mornings where I don't leave his mom's room until after he's up - and I'm still in my robe.

I mean Thanks for lending me the injectors!!
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Old 07-10-2008, 03:23 PM   #102
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Has anyone put a wideband on all cylinders to prove this? (NA only) or is this all speculation based on dead number 4 cylinders? If the latter, take careful note that your coolant goes in the front and out the front (unless you modded it and installed a FWD head gasket) thus doing it's best to miss out the number four end all together. Mazda *try* to compensate for it by enlarging the holes at the far end and closing them up at the close end, however it never works as well as it would with the FWD setup. Miatas are not alone here, all mazda RWD setups are this way, and they all suck. If someone did put four wide bands on their NA bp/b6 engine and prove the flow thing, what I have posted is still true and good to know. If they didn't, I'm placing my bets on that! EGT alone is NOT good enough to tell you the answer to that as cylinder temperatures do affect it.

/Rant

Fred.
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Old 07-10-2008, 03:25 PM   #103
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i believe reverent did... and found #1 to be hotter and leaner....i dont remember. this was on a NB, where it feeds from the back.....
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Old 07-10-2008, 05:19 PM   #104
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It'd be worth doing this test twice if the second time I had an NB rail and a pro dual-feed rail.

Right now the plan is: Leo brings me the boards tonight

Tomorrow night I get stinking drunk watching movies and playing video games

Saturday "morning" I do this test come hell or high water.
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Old 07-10-2008, 07:10 PM   #105
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I'm holding my breath....

ooo the anticipation....

That $99 dual feed is calling my name....
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Old 07-10-2008, 07:19 PM   #106
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I'm glad you'll be in top form for the scientific analysis.
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Old 07-10-2008, 07:38 PM   #107
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Video tape everything! Never know when you'll create the new youtube sensation...

Miata driver/queen set's house on fire!!!
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Old 07-11-2008, 03:13 AM   #108
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Quote:
Originally Posted by Braineack View Post
i believe reverent did... and found #1 to be hotter and leaner....i dont remember. this was on a NB, where it feeds from the back.....
I'd still have to ask what sort of inlet manifold he was using and how balanced that was. The chances of unbalanced airflow seem quite a bit higher.

Abe, are you going to run the test with the second feed blocked off? If so, you should minimise the length of hose to the blockage as the stretch in the rubber will effectively dampen the pulses and potentially skew your result lol.

Fred.
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Old 07-11-2008, 02:08 PM   #109
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Thank GOD someone else sees that. :-)

I wish I had an unmolested rail to test with, but beggars can't be choosers. Right now I'm thinking I might try to plug the hole with rubber or a very short hose... But I'm also tempted to tap the inside of the brass fitting, thread in a bolt and put an oring on the head - that should give it a metal, non-damping back to the rail.

'Course, maybe braineak can chime in here....

My biggest questions right now all revolve around the stock rail, if the stock rail works perfect, there's no need to look anywhere else.
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Old 07-11-2008, 02:11 PM   #110
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get a rubber cap, clamp it on the barb..... that or tap the "bad" one i want one good one if it proves to be better
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Old 07-11-2008, 04:33 PM   #111
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so you need a stock, un-molested fuel rail? I thought you had two already. I have one from a '92 escort GT BP motor sitting on a shelf here. I will also have the stock one from my '97 available once the ETD part arrives in a week or so. PM me if you want/need either.
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Old 07-11-2008, 04:45 PM   #112
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Quote:
Originally Posted by AbeFM View Post
Thank GOD someone else sees that. :-)
I swear, at university, i didn't learn about physics, chemistry, calculus, computer science etc, I learned how to apply thinking :-) IE, always be critical and analytical. I appreciate that quality in you Abe. You are like that song by king missile :

http://www.youtube.com/watch?v=byDiILrNbM4

"Even though sometimes it's a pain in the **** I like having an <Abe>"

;-)
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Old 07-11-2008, 05:22 PM   #113
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Quote:
Originally Posted by Arkmage View Post
so you need a stock, un-molested fuel rail? I thought you had two already. I have one from a '92 escort GT BP motor sitting on a shelf here. I will also have the stock one from my '97 available once the ETD part arrives in a week or so. PM me if you want/need either.
Well, I'll know more after this weekend. If I find that the stock rail is 100% ok up to high flow rates, the testing is done. If dual feed helps, testing done. If I find performance wanting....

Then I'll be on here begging someone to send me one of these fancy rails. I'll test a dead stock one, an aftermarket one, a home mod one, and maybe (such a PAIN to pull) my '00 stock rail all side by side.

So, in short, not right now, but maybe. And I do, I might be begging you to put off installing your new rail a bit. :-)

As a personal favor, if anyone has a '99+ stock rail, I'm interested, since it's what's on my car, and the only bit of this that really pertains to me.
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Old 07-12-2008, 03:44 PM   #114
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God Dammit!!!! I and anyone else waiting for results just missed out on the $99 intro price on those new rails. AAAAAGGGGHHH!!!

Science and reason just cost me another $20! Guess now the pressure is off to get this test done since they are regular price now. Still look forward to seeing the results!
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Old 07-13-2008, 11:31 AM   #115
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any results yet?
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Old 07-14-2008, 02:56 AM   #116
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Quote:
Originally Posted by cueball1 View Post
God Dammit!!!! I and anyone else waiting for results just missed out on the $99 intro price on those new rails. AAAAAGGGGHHH!!!

Science and reason just cost me another $20! Guess now the pressure is off to get this test done since they are regular price now. Still look forward to seeing the results!
Yeah - I know. That, and real life interfearing has pushed this back again. Somehow my company thought it would make sense to dump an entire proposal on my lap for an award greater than all the money we pulled in in the last three years combined, and tell me it's due wed with full CAD mock ups, power estimates, etc.... on like friday. Gee, smart move guys.

PLUS like everyone's bailing on the san diego scene so... No luck yet. But either this weekend or wed/thur night. Really looking forward to doing it... Just not to playing camera man AND running the test. But I got all my boards back, and Leo's car's all up and running, so I should have ten minutes to myself now if work ever slows up.
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Old 08-06-2008, 02:46 AM   #117
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so still no proof ??
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Old 08-06-2008, 02:42 PM   #118
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Heh, yeah - I can't seem to get two people together at the same time to do it. Now the girlfriend wants her measuring stuff back and another forum member wants back his injectors - I can't blame them, it's been too long. :-\ I think it's just something which would go a lot better with a second set of hands.

Anyway, thur is the big last day, so there you go.
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Old 08-06-2008, 02:43 PM   #119
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I want my rails back....
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Old 08-06-2008, 03:04 PM   #120
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Homo.


Fine. I guess thursday I'll at least try to run something. Maybe tonight before everyone shows up demanding free beer and entertainment.
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