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Originally posted by Matty K:
Originally posted by RTStabler51:
Originally posted by Matty K:
While this thread is still jumping... is there a generally recommended place to tap for fuel? Also, I already have an aftermarket fuel pressure sender hooked up for my Autometer gauge; if I install a tee at the end of that line, and mount the safety switch there, will it read correctly? AAAAND what pressure should I get?
Thanks all!
at the shrader valve.
Tap at the Schrader? Or should I mount the safety switch there? Sorry, I'm just trying to figure this out, as I'm ordering from Jeg's, and want to see what fittings I still need.
The only place available to tap is at the schrader valve. I think the T would work, works for everything else.
Ryan
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Ok, cool. Is there a popular method for doing this? This is the image I found of the Schrader:  So I should just fit a tee into that line, right? Anyone know what size that tube is? Again, thanks all.... I'm just piecing together what I'm missing.
'98 Contour SVT - Please pardon our dust, under heavy construction.
'96 Escort LX - Pretender to the throne.
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Originally posted by Matty K:
Ok, cool. Is there a popular method for doing this? This is the image I found of the Schrader:
So I should just fit a tee into that line, right? Anyone know what size that tube is?
Again, thanks all.... I'm just piecing together what I'm missing.
Sort of.
Just unscreww the whole schraeder valve from the line with a 10mm socket I think, then you have a threaded hole. It is some sort of common thread because I took the schraeder valve to the hardware store and found an A/N fitting with the correct threads. Very similar to what the turbo guys use to tap the heads for the turbo oil feed. Anyway Buy one of those brass fittings from ACE Hardware and then buy a braided steel line to remote it out from under the manifold. THen you can get another fitting and a brass T to hook it up to the safety switch and the fuel solenoid inlet.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
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Ooooooooh, I see. I was thinking that the hose on there is in the engine, but it's not, is it? That's someone testing the Schrader, which is just a release valve, right? If that's the case, everything you said makes perfect sense to me.
Also, what pressure should the safety switch be? They make them in (I think) 7, 10, 15 and 30, or something along those lines.
Thanks Warmonger.
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I don't know but I'm thinking 15psi is fine. High enough to still be provide fuel through the fuel jet when it starts to cut off but low enough that a pressure fluctuation won't shut it off. Hell, I've never seen the fuel pressure drop below 30 even under load but with a stock pump AND nitrous on the rail it may have a fluctuation.
I ran the 7psi safety switch but that was only because that was what was available at the time.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black
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Whats the best type of Fuel pressure cutoff switch? I know summit sells an adjustable NX one Here Would that be a good choice and then just follow the instructions from above (tap into Schraeder valve etc.)
Also, in my Zex kit i got a fuel line tap that looks like this:
Would that be better than running off the Schraeder valve?
99 TRed Contour SVT # 1853 out of 2760
230.2 WHP @ 6500
237.0 WTR @ 2250
Originally posted by MxRacer:
Originally posted by RawBurt:
I'll be keeping it to myself, until the time comes. It'll be hard to find. 
much like your weiner.
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Edelbrock ones are MUCH cheaper. My plan is to put a fitting where the Schrader is, run a short braided line to a tee, where the cut-off is mounted, then run a long braided line from the other side of the tee to the solenoid... for what it's worth. I ordered a bunch of parts from ye' olde Bill Jenkins and had him send me a Schrader so I could get a correct thread size, and do one big order of the fittings I'm missing from Jeg's. Well worth the extra $4 I spent on it to take out all guesswork; though he did say it's a "standard" Schrader size, so you may only need to take a trip to the hardware store. Either way, I'll post up my final setup with what I find about thread sizes and all.
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after reading some more it seems my kit didnt come with the Schraeder valve fitting that the kit is supposed to come with. I guess ill just order that from the Zex store unless they can be found at any hardware store (home hardware or Canadian tire?)
99 TRed Contour SVT # 1853 out of 2760
230.2 WHP @ 6500
237.0 WTR @ 2250
Originally posted by MxRacer:
Originally posted by RawBurt:
I'll be keeping it to myself, until the time comes. It'll be hard to find.
much like your weiner.
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Originally posted by Tourige:
Whats the best type of Fuel pressure cutoff switch? I know summit sells an adjustable NX one Here Would that be a good choice and then just follow the instructions from above (tap into Schraeder valve etc.)
Also, in my Zex kit i got a fuel line tap that looks like this:
Would that be better than running off the Schraeder valve?
Don't use that crap.
You can use a piece of braided steel line with the A/N type fittings. You can get all your braided steel line from any hot rod shop, probably JCwhitney, definitely earls, anyplace you'd buy that type of line. search the web after you find your fitting at the hardware store.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black
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Yes, he's right.
But you just want the tap size of the shcraeder valve.
Don't quote me but it is an NPT thread. It could be 1/4" NPT or a metric equivalent.
Cmon, after you bleed the fuel pressure it takes like two minutes to unthread it, you don't even have to pull the intake as youcan see it. With a long extension (1/4" drive) and a deep socket you can have it off quick. Then just take it to ACE Hardware and you'll have the fitting. You are looking for an A/N fitting, sort of a conical shaped head.
This is EXACTLY the same fitting used to fit into the turbo bearing section for the oil feed when you use braided steel line.
I've got an earls fitting downstairs right now but I'm too lazy to go and get it, snap a picture, etc. Maybe someone will link to a picture but I'm sure if he wants nitrous bad enough he'll do the little bit of legwork that is left.
Former owner of '99 CSVT - Silver #222/2760
356/334 wHP/TQ at 10psi on pump gas!
See My Mods
'05 Volvo S40 Turbo 5 AWD with 6spd, Passion Red
'06 Mazda5 Touring, 5spd,MTX, Black
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