fd 4 life

what fuel rail do yous recommend to run these.... sec rail

FullFunctionEng

iTrader: (13)

Unfortunately I can't give you an unbiased opinion. Many of our customers love our FD rails and they will even work with ACV when using the 34mm ID1300's..

gracer7-rx7

iTrader: (16)

ID has 1300cc injectors?

FullFunctionEng

iTrader: (13)

Yup

Injector Dynamics - ID1300

gracer7-rx7

iTrader: (16)

Nice. I didn't see them on the site when I looked before posing the question. Gotta keep these in mind. I'm running the stock 850s bored out to 1300 currently.

fd 4 life

so I could use any size then right since I don't have none of that emissions junk . ur rails with 34mm/ 14mm tops id 1300cc correct?

Jobro

iTrader: (2)

I've been eyeing off your fuel rail setup that allows you to retain all emissions for a few months now. I won't be needing it for a fair while I presume. I honestly believe it is the best looking, most functional etc.

However I do not like the design purely of the section where the o-ring seals the fitting to the rail. Is that sound engineering practice? Can you reference a textbook, article, journal or something that shows that is an acceptable way to use an o-ring?

I'm not trying to bash your product its just I can't see that being the correct way.

0110-M-P

iTrader: (10)

Are you talking about how the o-ring sits in the machined chamfer at each end of the rail?

It is known as an "o-ring boss seal" or commonly called just ORB...here are a few references.

Parker's o-ring handbook (pages 4-22 through 4-24)
http://www.parker.com/literature/ORD...g_Handbook.pdf

RL Hudson's ORB design info
Table 47

And lastly, what Wikipedia has to say...
http://en.wikipedia.org/wiki/O-ring_boss_seal

Jobro

iTrader: (2)

Yes that is exactly the bit I was talking about. I always prefer to use OEM style crush washers with machined faces. I need to do some more reading on this boss seal arrangement now. Maybe it is OK then.