Gen 1 - 3 NecroRam Manual

Install Guide

1.) First start by degassing your marker.

2.) Remove the top Clamshell half, and undo hose from front block. You may need to remove the barb in the front block.

3.) Next remove both your grip frame screws & remove the frame, then unscrew your front block grub screw and slide your front block forward to gain access to your existing spring.

4.) Remove the existing spring and replace it with the new lightened spring. Make sure the spring goes over the poppet, and then the Washer that came with your kit will sit on top of the spring.
*Tip: Superglue the washer to the spring for easier installation.

5.) Slide your front block back into place and reinstall your grub screw, reinstall the barb/hose if removed, and then reattach frame to the body.

6.) Once that's done unscrew your ram cap & remove your existing ram by pulling up on your bolt pin & gently tapping the back of your marker until your existing ram falls out.

7.) Apply Dow-55 to the NecroRam o-rings and slide it into your ram sleeve.

8.) Once the NecroRam is in, screw your ram cap back in and put your bolt back into place, you will notice a big difference in resistance, don't worry that's normal.
*Tip: You MAY need to remove your rubber bumper if you are using a Hybrid Adjustable Ram Cap or Bob Long Adjustable Ram Cap.

9.) Next you're going to need to adjust your ram cap for minimal roll back, to do this adjust your ram cap until you can drop a ball in the breach and it doesn't roll back (much, if any) between the detents and bolt. You should see about 1/32 to 1/16" of the bolt when looking into the breech.

10.) Once you've followed all these steps you can gas your marker up. See Sweet Spotting Regulators Below

Regulator Sweet Spotting
(Follow this thanks to Twisted_mister on IOG)

1.) Degas the marker
2.) Back out the lpr so that it is flush with the cap.
3.) Back the hpr out until it is flush with the cap.
4.) Gas the marker up.
5.) Turn the hpr in 1 1/2 turns.
6.) Turn the lpr in until the gun cycles fully without "farting" at a high rate of dry fire.
7.) Go to the chrono and turn the hpr in 1/4 turn and shoot. Continue to do this until the velocity decreases. Back the hpr off 1/2 turn.
8.) Raise the lpr until you get to your desired velocity.
9.) Repeat step 7.
10.) Repeat step 8.
11.) Continue until the hpr is dropping off 1/4 turn past your desired velocity.
* - Adjust dwell if you see valve float or have other problems.

Desired Settings

LPR - 50 to 60 psi
HPR - 180 to 220 psi (Depending on velocity requirements)
Dwell - 10 to 12 MS



Copyright 2008
Chris Williamson / NecroPB.com