Permanent Fuel Pressure Gauge mount in Engine Bay from Special T

[Nuclearbacon]

Went through about 10 titles. They all sucked.

I bought the in-engine bay fuel pressure gauge mount "kit" from Special T Auto (http://www.specialtauto.com/delorean-parts/images/fuel-control-presure-monito.jpg) one night and just received it in the mail.

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It comes with a braided line attached to a gauge and a banjo fitting at the end. No washers, nothing else. I was thinking I would place this where I placed the K-Jetronic Test kit when I hooked it up for testing like this video showed me (https://www.youtube.com/watch?v=h7drhxjJ2mg) .... but then it hit me that I'll have two banjo connections at one spot... and that can't be right.

So where the heck do I tap into the system without needing a super long banjo bolt with two holes to go into the Control Pressure Regulator to get my pressure reading??

I feel silly asking this! I must be missing something.

Does anyone have the kit installed? Or can someone slap some sense into me? Thanks!

[Bitsyncmaster]

I would think you use a longer banjo bolt onto the CPR so both lines stay connected. You would then be reading control pressure.

[[email protected]]

Daves right I mounted my gauge to the firewall next to the relay and connected it to the CPR. Works great and so far no leaks.

[Domi]

No drawing came with it to explain how and where to connect it?
https://www.specialtauto.com/delorean-parts/images/fuel-control-presure-monito.jpg
Unfortunately, we are not able to see anything on the picture link above.
As John is on the forum, maybe he will be able to explain and show the rest of his picture?

[Nuclearbacon]

Nothing came in the box except the gauge. It would be great to see a photo of johns connector. I'm assuming I can just take my banjo bolt out, go down to the auto parts store and grab a longer bolt? Does anyone have photos of the two banjo fittings on top of each other? Thanks again, I'm not sure why that weirds me out. Feels wrong.

[Nicholas R]

Nothing came in the box except the gauge. It would be great to see a photo of johns connector. I'm assuming I can just take my banjo bolt out, go down to the auto parts store and grab a longer bolt? Does anyone have photos of the two banjo fittings on top of each other? Thanks again, I'm not sure why that weirds me out. Feels wrong.

You'll need a copper washer between the two fittings. Seems pretty crappy that it didn't come with a new bolt. I'd contact John about it. The bolts aren't that common.

[Nuclearbacon]

I pulled the bolt. and through amazing MS Paint skills I have created a concept bolt for which I believe I need

Original bolt:
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Conceptual Bolt
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[Ryan King]

I pulled the bolt. and through amazing MS Paint skills I have created a concept bolt for which I believe I need

Original bolt:
33093

Conceptual Bolt
33092

Just Email John and ask him how to hook it up.

[DMC5180]

You might try this place:

https://www.belmetric.com/bnjdouble8x10-double-banjo-bolt-p-4974.html?zenid=im21g61vgkh7mvgm79vult76p7&cPath=1041_928

I would verify the thread pitch of the current bolt. I also found an EBAY Uk source that has them in M8 x 1.25 pitch.

[David T]

You might try this place:

https://www.belmetric.com/bnjdouble8x10-double-banjo-bolt-p-4974.html?zenid=im21g61vgkh7mvgm79vult76p7&cPath=1041_928

I would verify the thread pitch of the current bolt. I also found an EBAY Uk source that has them in M8 x 1.25 pitch.

You bought the item from a Delorean vender. Get in touch with him and see what was supposed to come with it or if you had to buy additional hardware to make it work. Really no need to have a fuel gauge permanently attached. Once you get the fuel system working you will never look at it again.

[Domi]

You bought the item from a Delorean vender. Get in touch with him and see what was supposed to come with it or if you had to buy additional hardware to make it work. Really no need to have a fuel gauge permanently attached. Once you get the fuel system working you will never look at it again.

Just for fun :wrenchin:

[Nuclearbacon]

After a little phone tag on my part, I connected with John and the kit should have come with a double banjo bolt which he will be supplying :)

[David T]

After a little phone tag on my part, I connected with John and the kit should have come with a double banjo bolt which he will be supplying :)

Be sure to use the copper sealing washers between each piece. For a double you need 3. You should not reuse old ones, John should be shipping you some new ones along with the longer bolt.

[DMCMW Dave]

Personally every time I see a fuel pressure gauge permanently installed in the engine compartment (on any car, not just DeLoreans) I really worry about whether or not that particular gauge was made for the heat and vibration of an engine compartment. There are some I've seen mounted right on the engine. Most of those small cheap gauges are made for test use and not living with the engine permanently. Fuel leaks are a big enough issue on this car that I don't like the idea of adding two more leak points.

Just my opinion, I could be wrong. .. . .

[Delorean Industries]

Exactly what I think.

[Nuclearbacon]

Exactly what I think.

I completely see your point. If it fails, it is easy to fix. I think it will be very cool to see proper fuel pressure represented by a gauge in a perfectly working system. :)

I heed your warning with all due respect. Thank you for the heads up!

[Delorean Industries]

A failure of that component in that precise location will result in the car requiring replacement. You won't be able to get out fast enough. By the time the rpm relay cuts out the fire will have engulfed the rear half of the car. Dave is right in his above post. You only want to subtract fuel line connections on the car not additional ones. I wonder if Johns liability insurance covers him selling/instructing owners to install a component meant for test purpose only permanently.

[PJ Grady Inc.]

I totally agree with your and Dave's opinion on this and we all already know the answer to the insurance question. The gauge should be removed after testing if installed at all. This gauge is not hosed correctly anyway and the idea of making a custom banjo just to hook it up shows just how absurd installing it is! Some vendors seem to have no issues with selling untested/unproven products.
Rob Grady

A failure of that component in that precise location will result in the car requiring replacement. You won't be able to get out fast enough. By the time the rpm relay cuts out the fire will have engulfed the rear half of the car. Dave is right in his above post. You only want to subtract fuel line connections on the car not additional ones. I wonder if Johns liability insurance covers him selling/instructing owners to install a component meant for test purpose only permanently.

[DMCMW Dave]

Probably beat to death now, but . . . . its important. Would you feel comfortable running a fuel pressure line into the car and mounting the gauge on the dash? Me neither.

So I'd even less enthused about mounting it over a hot engine.

The right way to do this (and I've never seen it done) would be to mount a pressure transducer near the pump, well away from the Hot Parts, and run an electrical gauge inside. Kind of how oil pressure and fuel level gauges work. But fuel pressure is not something you really need to monitor. Generally if you don't have enough, the car stops running without further damage. The reason for oil pressure gauge is that if you lose oil pressure the car stops running when the engine seizes.

[Domi]

Maybe this gauge is special for permanent mount? Sometimes we see that kind of hardware on muscle car, don't you think?

[David T]

Maybe this gauge is special for permanent mount? Sometimes we see that kind of hardware on muscle car, don't you think?

From a more practical point of view, the only time you can see the pressure gauge is when the motor is running and the car is parked with the engine cover open. Without the valve you can only see control pressure. Not very important unless you suspect a problem with the Control Pressure Regulator. Unless you know how to interpret the readings, just why is the gauge there? Would you drive around with a timing light permanently hooked up? It may be impressive (to someone) but kind of ridiculous. The venders sell things people want, not everything is necessary. Sometimes a customer must use his own judgement.

[Delorean Industries]

From a more practical point of view, the only time you can see the pressure gauge is when the motor is running and the car is parked with the engine cover open. Without the valve you can only see control pressure. Not very important unless you suspect a problem with the Control Pressure Regulator. Unless you know how to interpret the readings, just why is the gauge there? Would you drive around with a timing light permanently hooked up? It may be impressive (to someone) but kind of ridiculous. The venders sell things people want, not everything is necessary. Sometimes a customer must use his own judgement.

I don't offer a single thing that isn't necessary.

[David T]

I don't offer a single thing that isn't necessary.

OK, I should have said *some* venders! Point is every customer needs to use some personal judgement to decide what is appropriate and what is not. We can all agree that SpecialT has a lot of pictures on his website! For a newbie it is very helpful. He also gives a lot of good advice on his kits and what you should buy for any particular project on his website. All of the venders can and will give good advice, just not 24/7 which is what SpecialT's website does. So when you can't sleep you can make up your wish list. Each vender has their strong points and their weaknesses. Not everything SpecialT sells is worth buying.

[Nuclearbacon]

:blackeye:

Wow.

I will not be installing the gauge.

[mluder]

I don't offer a single thing that isn't necessary.

Oh... This sounds like a challenge...

Cheers
Steve

[Delorean Industries]

Oh... This sounds like a challenge...

Cheers
Steve

I dare you to attempt to provide a list of URL's of products fitting this catagory Steve! I will provide a valid answer of some sort of everything!

[Farrar]

I don't offer a single thing that isn't necessary.

Quote of the week right here! :thumbup2:

[Domi]

:blackeye:

Wow.

I will not be installing the gauge.

Maybe something like this is better?
33126

[Delorean Industries]

I'm just not seeing the point in having a gauge to monitor constantly with the stock injection.

[DMC5180]

About the only reason having the mounted gauge would be to observe system pressure loss after shutdown and perhaps pressure build up after the key is switched ON.

[Delorean Industries]

Yeah other wise you know there is a problem without a guage....

[Nuclearbacon]

Maybe something like this is better?
33126

Yes! This is basically what I thought I was installing/purchasing, just another version.


About the only reason having the mounted gauge would be to observe system pressure loss after shutdown and perhaps pressure build up after the key is switched ON.

YES. THIS.

Insert Josh's anger below

[dn010]

On any of my 60's cars, I've got 1 gauge I install inline AFTER the pressure regulator, set the pressure regulator, go for a spin, then the gauge comes out if all is good. Once you have it set it's not going to change unless there is a pump or regulator failure and you'll know there is a problem without a gauge. The gauge is then removed and put in a drawer until the next engine needs to be set up. I too don't see a point in having a permanent gauge but we all have our opinions...

[Bitsyncmaster]

We did have a spell of failing O-rings but I think that vendor got them replaced (or sold them all). Then that permanent gauge would let you see quickly loosing rest pressure. Once you get things fixed, as long as you drive the car it stays fixed.

[Nuclearbacon]

I solved my fuel issues. Accumulator and bad o-rings in my fuel pressure regulator (and a slightly weepy fuel filter).

I wish I could plug an electrical pressure unit inline with the fuel pressure, then run a gauge somewhere SAFELY WITHOUT FIREY DEATH.

I would like the gauge that does NOT come with FIREY DEATH.

and yes! even with a working fuel system I'd still like to see my pressure reading. Why you ask?!?! CUZ! :)

[Domi]

So, did you install your gauge into your engine compartment or not?
If yes, any pic?

[Bitsyncmaster]

So, did you install your gauge into your engine compartment or not?
If yes, any pic?

Here is one on this web page for sale.

http://unwiredtools.com/catalog.asp

[Domi]

Thanks for the link ;)
This one is for permanent mount?

[Bitsyncmaster]

Thanks for the link ;)
This one is for permanent mount?

Don't know. I guess you could ask the company.

[Trstno1]

So, was the Hervey's gauge mounted in the end or what? I am interested in a pic of the hookup to the CPR.

[Domi]

Looks like someone installed this gauge, see this eBay listing:
http://www.ebay.com/itm/252313345609?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT

[Tillsy]

So, was the Hervey's gauge mounted in the end or what? I am interested in a pic of the hookup to the CPR.

Here you go...
http://dmctalk.org/attachment.php?attachmentid=40724

[DMCVegas]

Here you go...
http://dmctalk.org/attachment.php?attachmentid=40724

With all due respect, that's a 3.0L EFI Conversion.

[Tillsy]

With all due respect, that's a 3.0L EFI Conversion.

http://dmctalk.org/attachment.php?attachmentid=40727

[Rad Dad]

Okay - now you have all scared the shit out of me. Some 10 years ago I had the braided fuel lines installed, including an added fuel pressure gauge, installed on my car by Don Steger/Danny Botkin. Why? Well, first because it was a way to easily check for leak down after engine shut off, and, frankly, because I had just added a bunch of chrome in the engine compartment, it "fit in" with the scheme. So now I have driven well over 50,000 miles with it installed and have no problems to date. Additionally, my car has been serviced by one of the most highly regarded DMC franchises and I have never been advised to remove that gauge. But....or perhaps I should say BUT...with the miles I travel in my D, have I just been lucky, or are the warnings a bit overstated?

Dick Ryan, The Rad Dad

[SS Spoiler]

Go dad go!

[Domi]

Any pic of your engine compartment Dick?

[DMCVegas]

Okay - now you have all scared the shit out of me. Some 10 years ago I had the braided fuel lines installed, including an added fuel pressure gauge, installed on my car by Don Steger/Danny Botkin. Why? Well, first because it was a way to easily check for leak down after engine shut off, and, frankly, because I had just added a bunch of chrome in the engine compartment, it "fit in" with the scheme. So now I have driven well over 50,000 miles with it installed and have no problems to date. Additionally, my car has been serviced by one of the most highly regarded DMC franchises and I have never been advised to remove that gauge. But....or perhaps I should say BUT...with the miles I travel in my D, have I just been lucky, or are the warnings a bit overstated?

Dick Ryan, The Rad Dad

I wouldn't worry about it. Me personally, I don't see the need for the gauge at all. If your car has a hot-start issue for example, THEN it's time to break out the Fuel Pressure Gauge, and start testing. Depending upon the kit you buy, for $30-$40 more you can get a universal kit that works on multiple cars.

Installing the gauge is a personal choice to be sure, but it shouldn't pose any additional risk. You should be fine leaving it in place. I wouldn't worry.

[Josh]

I wouldn't worry about it. Me personally, I don't see the need for the gauge at all. If your car has a hot-start issue for example, THEN it's time to break out the Fuel Pressure Gauge, and start testing. Depending upon the kit you buy, for $30-$40 more you can get a universal kit that works on multiple cars.

Installing the gauge is a personal choice to be sure, but it shouldn't pose any additional risk. You should be fine leaving it in place. I wouldn't worry.

I have a permanent fuel pressure gauge on my car. It is a very useful tool. Helped me quickly determine fuel regulator and check valve issues.

[Rad Dad]

Any pic of your engine compartment Dick?

I am out of the country now - on Curacao - overdue anniversary trip with the wife. Pics can follow after I return home. I will contact off-line.

[Domi]

Many thanks :thumbup:

[Nuclearbacon]

I never installed the Special T Gauge in my car. The fiery death scared me. I do still have it if anyone is interested.