Eng. DIY adjustable fuel pressure reg. and gauge install

[LiquidIC]

well because im a noob to this site i cant post in the DIY section so ill post it up here!

First lets start with the tool list that you will need for the project
1. ablity to wrench!
2. a 17mm socket or gear wrench or wrench
3. 21/64 metal drill bit
4. Vise
5. 1/8 27 NPT tap
6. 4" crescent wrench


second the parts list
1. permatex thread sealent (GAS SAFE!)

2. B&M adj. fuel pressure regulator part# 46057(sliver)46058(red)46059 (blue) and if you want purple #46051

3. B&M fuel pressure gauge part # 46054

now for the install

first locate this handy bolt that honda provided us with along with the fuel pressure regulator

for those interested the bolt is a M12 X1.25 thread

next you remove the bolt using the 17mm socket or wrench



next you clamp that baby in a vise and take the 21/64 drill bit and start drilling the center
*** be sure to drill exactly center other wise the bolt WILL snap when you put it back into the fuel rail***

after the hole is drilled (about 1/4"-1/2") down you tap it with the 1/8"NPT tap

it should look something like this
*** i added the thread sealent already***

after taped check and see if the gauge will thread into the newly tapped hole


disassemble the gauge from the bolt and put the bolt back into the fuel rail. once the bolt is tight, spin in the gauge LOOSELY by hand, then use the 4" crescent wrench to tighten down the gauge, once again dont over tighten this
*installed*

for comparison



now give yourself a pat on the back because if you didnt have to go to the junk yard like i did to pull another bolt of the rail because you snaped the "S" out of it... one step ahead

im not going to go over the Adj. Fuel pressure regulator with pictures because its so easy to do ill just go over the steps

1. take out your existing FPR (Fuel Pressure Regulator) with the 10mm socket
2. cut 1/4" from the top of the FPR (where the vacuum lead comes in) with a hack saw or cut off tool, dont worry about the spring inside B&M provides you with a new one.
3. install the new spring, gaskets and sandwich the two halves together USE THE LOCK TITE PROVIDED!

4. install the FPR back onto the fuel rail... should look like this


finished... give the car time to get fuel and start it up check for leaks.

im not sure what the stock honda fuel pressure is set at but i turned mine up to 40psi at idle, stock i think is 36psi

PICTURES OF MY MOTOR FOR FUN!



im gearing up for turbo that DIY yet to come... i call it "project BUTT stock"

[LiquidIC]

bonus

[ALOW1]

Good write up thanks!

What kind of gains can I expect from doing a mod like this? Other than being able to keep an eye on what my fuel pressure is.

On an all stock motor what will an increase in fuel pressure do for it?

[Dep22build]

Good write up thanks!

What kind of gains can I expect from doing a mod like this? Other than being able to keep an eye on what my fuel pressure is.

On an all stock motor what will an increase in fuel pressure do for it?

First off stock fuel pressure is 38 psi. On an all stock motor there will probably not be any noticiable gains. If you are doing a turbo build then you can fine tune the car with the Regulater. On a turbo application you will most likely need an adjustable fuel pressure regulator.
I think it would be best to stick with your stock regulator if your motor is all stock there is just no need for it really.

[ALOW1]

First off stock fuel pressure is 38 psi. On an all stock motor there will probably not be any noticiable gains. If you are doing a turbo build then you can fine tune the car with the Regulater. On a turbo application you will most likely need an adjustable fuel pressure regulator.
I think it would be best to stick with your stock regulator if your motor is all stock there is just no need for it really.

Ok that makes sense, thanks for the post. The only thing I can see doing for an all stock motor would be to install the gauge. It wouldnt benefit anything but neither does my chrome oil fill cap.

[Dep22build]

LOL!! THat chrome oil fill cap has no benefit except add like 20 hp to your car! jk jk
I dont see any problems with just putting a adjustable regulator in to have the gauge so you can monitor your pressure.
Also if you are looking to do any mods to the car in later times then the fpr would be a good thing to have.

[capman86]

cool now i know stock fpr psi thanks

[Dep22build]

cool now i know stock fpr psi thanks

Yup it is just a little research and going to an automotive college taht gives you the abilities to help others lol

[PR CB7]

my question is if stock fuel PSI, is 38,

would enrichment cause better response, or drivebality, like 40 or more,

be cause, once i heard, dat, honda motors, response very well 2 more gas,


unlike other engines which u have to lower stock F P,

[Dep22build]

my question is if stock fuel PSI, is 38,

would enrichment cause better response, or drivebality, like 40 or more,

be cause, once i heard, dat, honda motors, response very well 2 more gas,


unlike other engines which u have to lower stock F P,

Yes the stock fuel pressure is 38psi. It might cause better respinse and performance but it will be such a small difference it will be almost unoticiable. On a stockk honda motor i would say that you shouldnt go over more than 40 psi. over that then you are really just sucking in more gas than is needed

[LiquidIC]

i noticed a bit crisper throttle response by doing this, as far as making it faster... accords are slow stock, anything helps, but i didnt notice much of a speed gain, or increase in the ass dyno

[Dep22build]

Accords are in fact slow stock so if you want to make it ast slap a turbo on it like me and most of the other guys here at cb7tuner.com

[LiquidIC]

im making my IC pipes as we speak... look for it soon titled "project BUTT stock"

[Dep22build]

im making my IC pipes as we speak... look for it soon titled "project BUTT stock"

where did u get your pipes from or are u just fully making them yourself?

[LiquidIC]

a whole lotta 2.5" pipe+ myself+ a manderal bender= a bunch of messed up pipe and maybe some usable ones...

i dont store buy things because
a. im cheap
b. my set up is completely custom
c. i dont trust other people with my rides