Marv and Steve,
The 20B injectors are pretty much the same as the 13B in all the later models. Check the www.SDSEFI.com site, as Ross the propriotor has either made or is representing a aluminum body piece that will hold the injector. Most of the injectors are 10mm IIRC. The body of the injector has an o-ring on it to seal in the bore, and there is a groove on mine that are held in by a fork that is held down by a 6 x 1.0 screw. The 20B has large ports like the rare 13B Cosmo engine and there is a primary injector in the larger of the 2 ports, on mine at least.
Bill Jepson


-----Original Message-----
From: marv@lancair.net
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Wed, 22 Apr 2009 1:16 pm
Subject: [FlyRotary] 20B questions

Posted for "Steve Parkins" <momsblacksheep@msn.com>:

 I have to make my rails for my 20b so 20 dumb things I need to know.
 what inj do I use ?
 what reg do I need ?
 I am making my own intake, and is there any thing it will need (like air hole
ext.)?
 I am using the stock  th/body ?
 will the inj. have the seals on them or do I need them  ? (drill to fit)?
 can I just drill the same as the stock rails ?
 mild steel ok or do I want 4130 ?
 welding ok ?
 
 ps. I have the turbos complete for sale