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-   -   3D printed apex seal spring helper tool (https://www.rx7club.com/rotary-car-performance-77/3d-printed-apex-seal-spring-helper-tool-1168994/)

j_tso Jan 26, 2025 11:24 PM

3D printed apex seal spring helper tool
 
Nothing groundbreaking but I thought it'd be an interesting small project.
In the factory video for the Renesis, the assembler has a jig that allows the rotor to be inserted into the housing with the apex seal springs installed.
Before then they had to do it like we do with the rotor in the housing and our hands are already greasy from assembly oil.

https://cimg1.ibsrv.net/gimg/www.rx7...2d0248f48d.jpg


I put the model up on Printables. It's 2" long so the rotor can sit on its side while waiting to be installed.

https://cimg1.ibsrv.net/gimg/www.rx7...0e53d2d4c5.jpg

I tested a 1/2" version to check fitment and that worked well enough.
It would work better in metal like the real thing because the bottom seal needed a little prodding to slide with the rotor, or I might try some petroleum jelly on that as well.

https://cimg2.ibsrv.net/gimg/www.rx7...c918673402.jpg

Howard Coleman Jan 27, 2025 07:45 AM

:icon_tup:

gracer7-rx7 Jan 27, 2025 09:58 AM

That is pretty frickin cool. Seems to work like a piston ring compressor.

j_tso Jan 27, 2025 08:11 PM

Exactly. If there were 7.5" pistons that might work as well, though a bit unwieldy.

NathanBoutin Feb 7, 2025 11:21 PM

A true gentlemen, slicing myself one now..red to match my side seal gap tool. Thanks :cool:


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