Here is the current design. Do I need the second set of O-rings on the head side to properly seal the injectors in the flange

 

I think it will work fine how it is pictured, one thought though.

unless you run your own machine shop, i would be a little more lenient with those tolerances. In fact, a lot lenient. Tight tolerances=$ pretty directly. In addition I don't think that the tolerances on the rail or the manifold are that important in that the rubber o-rings wll be sealing the injector, and the clamping mechanism between the two, whatever it may be, keeps everything in place.

Just a thought to maybe save money. If you have your own shop, expletive it do what you want haha.

And another thing. I hate seeing cad drawings on the internet, because instantly I start using the center mouse button trying to zoom in on what I am looking at, for like 10 seconds until i realize i am on the internet.

 

I believe RC engineering can turn boch style injectors into honda style injectors for $10.00 ea. I called them one about a set of injectors from an audi.

 

Why all the o rings? am I missing something?
Be very careful about the load you put on the injectors in compression. They do not like to be squeezed (lengthwise) and will give you a fit with your tuneup if there is allot of compression on them. Realize that in a stock motor they are usually hung from the top rail and can float in the manifold.

 

MSD makes a drill bit that cuts an injector seat in whatever you want.

 

Mitsubishi style injectors use a "rubber donut" for the injector seat, which may work a bit better with your design. You can see what I mean in the top part of this picture:

http://www.diamondstarmotorspo...t.jpg

There also should be a cushion type of bushing between the fuel rail and large part of the injector body. It's hard to see, but look at the top of these injectors to see what I mean:
http://www.diamondstarmotorspo...1.jpg

You do know places sell injector seats premade, right?

 

here is one that i just made, ford type 1600 cc.best to use some type of stand off

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k24em2 &raquo;</TD></TR><TR><TD CLASS="quote">MSD makes a drill bit that cuts an injector seat in whatever you want.</TD></TR></TABLE>

i couldnt find this on their site or summit?
got a link...

 

http://www.rossmachineracing.com sells the bit to bore injector seats.

Justin

 

yeah their site is a little confuzing, and i cant find it...

link me?

 

I have to agree with KFMRC. I work on injector plugging with all types of injectors every day at work and that seems a little off to me. One is enough. My 2 cents.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by k24em2 &raquo;</TD></TR><TR><TD CLASS="quote">MSD makes a drill bit that cuts an injector seat in whatever you want.</TD></TR></TABLE>
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Justin Olson &raquo;</TD></TR><TR><TD CLASS="quote">http://www.rossmachineracing.com sells the bit to bore injector seats.

Justin</TD></TR></TABLE>

I'm very interested in this bit, but I can't seem to find it any where, anyone got a direct link to where I can buy one?