2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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pulsation damper mod

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Old 10-29-01, 08:17 PM
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pulsation damper mod

Hey all.. My PD screw is out.. I can't seem to find an 89-91 fuel rail.. How does this sound?

I've chopped the end off of the PD using a dremel cutting tool. Real easy to chop. The rubber diafragm was intact (for now)...but that's beside the point. What if I now tap and plug / braze / weld the end of it shut? I know, I know, hydraulic pulses and whatnot.. But, as a temp solution, at least. I imagine some braze or weld would plug it rather nicely...

-Tesla
Old 10-30-01, 10:27 AM
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If I recall correctly, you can just replace it with an M12 x 1.25 Banjo bolt. This would seem to be the safer alternative to hacking something out of the original part. Do this, or anything, at your own risk; I take no responsibility.

For what it's worth, I did an animation comparring the operation of the 84-88 and 89+ pulsation dampers. Check it out: Pulsation Damper Animation
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Blake Qualley
Rotary Engine Illustrated
Old 10-30-01, 10:48 AM
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Tesla,
You should be able to find another PD at Mazmart in Georgia or that salvage yard outfit in Rancho Cordova, CA. If all else fails, I've got a spare I was planning on holding onto, but I'll get it to you in lieu of you blowing yourself up with some of these homebrewed measures!
Blake! Great animation. Now I know what the do and what they look like inside!
Ralf
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