Rancilio Silvia Mega-Mod part 10 Grouphead Shower

by Updated: Apr 9, 2020diy-coffee2 comments

Avi's Silvia Mega-Mod

My way to a better coffee...

DISCLAIMER - Important!

Rancilio from a very mysterious reason attaches the brew shower screen with an M5x14 hex slot head bolt.
This bolt head leaves noticeable mark on the coffee puck and some suggest it has impact on the result. It also makes the cleaning of this area more difficult.
Pre-Infusion switch on control box
Grouphead screen filter prior of modding
I reworked it easily to a flat design with simple steps.

A. Using a sunk tool to machined the group jetbraker part and get a cone shape with angles matching the new countersunk screw.
B. Using M5x12 countersunk Hex head screw to replace the original one.

tipTip: Hex head allows easier access with a tool to screw/unscrew it. If Phillips head is used instead, a 90 degree screwdriver is probably needed to access this limited area.

C. On a wise, I pressed the screen with the screw on one side against the jetbraker and the diffuser on the other side until the screw pressed the shower screen and distorted it to reach a flat surface with the screw head.

tipTip: Use only Stainless Steel screw. A4 grade (marine grade). It is preferred if you want it to last for years.

This mod produces a very clean coffee puck.
If using a lathe is not possible, it can be done with a hand-drill.

Comments, remarks and updates are welcome.
Some will be published, with hidden sender's details.

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  1. Jake

    I’m curious. After this mod, can you use other brands’ screens (Simonelli, EMS, etc.) that already have the recess for the screw head or so you need to use Rancilio compatible replacement screens and press them in the vice grip?

    • Avi Schneor

      Yes, you can use other screens that have the same dimensions.
      Please remember you also need to mill the group jetbraker part and use a M5x12 countersunk Hex head screw to replace the original one.


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electric hazard sign


1. Silvia runs on high voltage.

Any modification made to your Silvia may cause damage to your equipment and harm to yourself or to others. 
Any modification made to your Silvia will void manufacturer warranty.
None of the following mods is recommended by me nor by the manufacturer, Rancilio. 
These pages show only my personal experience and know-how.
If you follow any of the mods, you do it on your own risk and responsibility.

2. Copyright © 2011 Avi. All rights reserved. 

Content including all text and images in part or in whole may not be reproduced, retransmitted, stored, distributed, disseminated, sold, published, broadcast or circulated in any medium
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