Tool to cut injector ports in a fuel rail?

[luke1201]

I am trying to make a new custom set of fuel rails. I have been told that there is a special 'port tool' used to cut the injector holes in the bottom of the fuel rail, that makes the correct radius for the o-rings and such. Can you tell me what this is called and where I can find one please? These would be standard 24#, 36#, 42#, high/low imp., etc. type injectors like those made by Bosch and Lucas.

Any help would be appreciated.


L

 

[patdaly]

Luke, I just use a standard reamer, then lightly chamfer the entrance. Never have had any problems yet.

I think the size was .546, but you need to verify that yourself, my tools havent been unpacked from the last move yet.

 

[franzh]

Almost all high performance intake manifold makers supply an injector install tool, even MSD. I did about 20 minutes search and found four of them.

Do a good search, there are plenty to choose from.
Franz

eng-tips, by professional engineers for professional engineers
Please see FAQ731-376 for tips on how to make the best use of Eng-Tips Fora.

 

[WilliamH]

Luke,

Ninety percent of the injectors that are used in the aftermarket are designed for use with a 14.0mm (.551") bore for both injector inlet and outlet. No radius is needed in either bore, just a small 45 degree entry chamfer for ease of installation.

We use a modified 14mm end mill. This end mill has a drill ground on the end to reduce tool changes.

Regards,
Will