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

 

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..

 

ID has 1300cc injectors?

 

Yup

Injector Dynamics - ID1300

 

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.

 

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?

 

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.

 

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

 

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.