S13 SR20DET FPR Upgrade, which did you choose?

[OM3GA]

This has been driving me nuts for some time now, i have done a ton of research and called Sard in Japan and Tomei.

I am looking to get an aftermarket fuel pressure regulator that i can adjust to the stock fuel pressure and not need to tune it or anything.

You may be familiar with my build and im very anal about anything i put into the build. I need to know for a fact.

Does the S13 SR20DET Use a Rising Rate FPR? Or does it use a 1:1 ratio FPR?

Which FPR did you choose to put on your SR and what is its part number?

I cannot find any real hard information on any any of the SARD Fprs or the Tomei Fprs. I am just paranoid about such a key component.

Hopefully someone can shed some light.

[duffman1278]

This should help, I think this is really all you need to get it working.

Fuel Pressure Regulator for SR
http://enjukuracing.com/aeromotive-fuel ... -6948.html

Setting the regulator...
how-to-set-your-fuel-pressure-via-an-ad ... 14558.html

[PhopsonNY]

This is not for SR20det, but there is enough info here for you to figure it out...

http://www.stealth316.com/2-fpr_upgrade.htm

you just need this to complete the package
HKS adaptor kit for the SR20 (Part # 1499-RA066)

http://www.frsport.com/SARD-Fuel-Pressu ... _1361.html

or

http://www.frsport.com/Tomei-185106-Fue ... 16572.html

good luck

[OM3GA]

Lol im looking for information about certain regulators, i know what adapters i need to hook it up that is NOT the problem at all.

I need to know that SARD makes a regulator that will work in place of the stock SR one or if the Tomei one will work instead. I am not concerned about the adapters that part is easy.

I am concerned that if i need a rising rate the fpr is a rising rate or if its a 1:1 then i get a 1:1 and have proof that it is indeed that ratio.

I am having trouble finding proof from any of the manufacturers.

[OM3GA]

There is some kind of chart on here, but i dont see any information whether it is 1:1 or a rising rate fpr.

Please take a look

http://www.tomei-p.co.jp/_2003web-catal ... lator.html

[duffman1278]

What do you need this information for though? If they designed the regulator for the SR then the regulator it's self should take care of the fluid mechanics in the mechanism.

All you have to do is hook it up, set it up, and go.

[Riq]

I went with a Sard Standard FPR. They are rated up to 450whp which is much higher then I ever plan on going on my Redtop (350-400whp goal). I installed it a month ago and I love it. I got the aluminum finish one which complements my Ciruit Sports Overflow very nicely. I set it to 31psi which is after a week of searching and asking people the psi it should be set to on a stock T25. I guess my only problem with the kit is that it doesn't come with a gauge or fuel rail adaptor. Other then that, it's a quality product and very nice piece to add to your bay.

For some reason my comp won't let me add pix. If I am able to get some on i'll post them. As far as ratios go I don't know what the Fuel Ratio is on a SR.

Edit: I am looking on the box and the Part number I see is 69010 and it is 1:1 Ratio. I asked at Enjuku Racing.

[OM3GA]

I mean the stock SR FPR is a 1:1 ratio if i am not mistaken. All of these FPRs are apparently Universal and not made for a certain engine. So i need to know if it is 100% compatible with the SR, i want to make sure that it is not a rising rate FPR as that would cause all kinds of damage.

My problem is the manufacturer is not saying whether it is a 1:1 ratio or a rising rate fpr.

[Riq]

Give me a few, I'll ask at Enjuku.

[OM3GA]

Riq where did you buy it and what is the part number? Also if you can scan the tech sheet and post it up here that would be great.

You should have it set to 42.5 without the vacuum line installed and it should go to around 36 psi when the vacuum is hooked up.

[Riq]

Just rechecked and it is comfirmed the #69010 Sard FPR is a 1:1 Ratio. As far as the Tomei goes, I have no idea.

[Riq]

All I have left is the box, the tech sheet was lost in all the exitement im sorry to say. I was focused on installing the part and didn't pay attention to the sheet being blown away by the wind. I'll try to source another one. As of right now the car has been fine @31psi but I'll adjust it to 36psi. For some reason, everywhere I searched said 31psi @ Vac

I bought mine from a guy that was parting his car. He had just bought it then blew his engine before he got to install it. The gauge and the adaptor plate I bought at a local muscle car place.

[OM3GA]

What is the part number on the box? I would definitely adjust it to 43psi with the vacuum line unhooked.

[Riq]

On the box 69010, just adjusted it as well.

[OM3GA]

Hmm that is the same one i was looking at from phase 2. Maybe that is the one i should run. It is a 1:1 ratio definitely? Does it say that on the box?

Thanks man you are a big help.

[Riq]

It doesn't say it on the box so I called Enjuku Racing and their tech told me it is. I also surfed the web and everywhere I saw they say that it's a 1:1 Ratio. They do however say not to get a rising rate type because those are really bad for SR's. Glad I could help

[OM3GA]

Exactly, thats why i am afraid is because i want to guarantee that it is a 1:1 ratio. I keep hearing people say that its a 1:1 Rising ratio but then that does not make sense does it? lol What does it say on the box? Anything at all? How long have you been using it? Who did you hear from that said it would be good for 450 hp? I see in a few places that its only for N/A vehicles. Let me know.

The problem is that i keep hearing different things from everybody.

[Riq]

The 450hp rating I saw online and I also asked a few shops before I bought it. The Type-R is ideal for 500whp+ and is bigger then the Standard. I been using it for over a month. It has worked great for me. The problem with the box is that everything is in Japanese so there is no way for me to know what it says. The one thing I do see is a small graph on the back of the box. I'm thinking it's telling you what you can use this fpr for. I see GT-R, GC8, S13, S14, S15 etc etc. I see that the part # 69018 is for NA, it lists EK-9, CD-6, EF-8. These are all Hondas, im sure #69018 is for NA's and #69010 is for Turbos. Thats all I see on the box, everything else is in Japanese.

I hope this helps

[OM3GA]

I would have no problem if i didn't keep seeing this around.

SARD adjustable fuel pressure regulators for EFI engines utilizes extra light weight diaphragm assembly that provides excellent pulsation dampening; to dampen the pressure spikes caused by high flow fuel pumps and cycling injectors (especially non-factory high flow fuel injectors). SARD offers two universal regulators, the Type-R & the normal models. Both models comes in either blue-anodized -6 AN aluminum inlet ports with a 1/8 NPT gage port, or blue-anodized aluminum 8 mm inlet with a 1/8 NPT gage port. SARD fuel pressure regulators are designed to provide the correct fuel pressure for any high performance fuel injected vehicle. The normal model is designed to be used on fuel injected, non-turbo-charged engines, and it is machined from billet aluminum. The other universal regulator, Type-R, is more expensive, and is designed for fuel injected and turbo-charged engines. Due to its boost compensating design, it can provide more fuel under high turbo boost conditions. As per the normal model, parts are machined from billet aluminum. Pressure adjustment is made easy on both models by turning the built-in 360 degree nut. Both models are made to bolt in the factory location in most vehicles, so installation is a snap!

[OM3GA]

sweet