New member & chasing Motion info

[Chevy454]

Darryl:

Before you plug your power valve (which I would recommend NOT DOING!), go to your local parts store and pick up a Holley anti-backfire valve. I'm not sure if that's the "official" name, but it simply keeps an engine belch from wiping out your power valve...believe me, it works, and is VERY handy! As far as your power valve problem, (I'm sure you already know this) but you should be able to check your vacuum at idle and select the correct valve from that. Here is Holley's power valve page: http://www.holley.com/HiOctn/TechSer...o/TI-222A.html I don't have my Holley book here, but I think they recommend 1/2 the vacuum reading +1. Also, everything I have read from Holley (and even a chat on the phone w/them) said that you should never really plug your power valve, but other people said they have had good luck plugging the rear. When set up correctly, they work! Good luck!

[DarrylD]

Chevy454(Rob?)
Thanks, It's working OK now so I don't plan on messing with it for now, but I'll do the research before I make a change.
Sheridan, pictures of my car are on this site (99 Reunion page)& elsewhere.

[AussieVette]

Darryl. Ah ok so that's your car. Wow that is awesome and I'm jealous. I love that color too, but I guess I'm biased with my 'Vette the same colour.

I actually have another picture of your car here which was taken outside in what looks like a driveway. That was the first picture I ever saw of the Motion GT.

Thanks for all the info...

[JoeC]

Rob- I wouldn't recommed plugging the power valve on a modern Holley but sometimes with the old parts you have to use the old tricks.
DarryID - I was wondering how the Motion LeMans style gas cap is mounted. I have seen where the flange is bolted or riveted to the fiberglass panel but does yours have a tube connecting the gas tank to the LeMans gas cap?

[DarrylD]

Joe, mine is riveted to the fiberglass. An aluminum (homemade)fuel cell was added back in the 70's by the owner for racing. So I don't know how it originally came from Motion. As it is now, there is an aluminum tube connecting the cap to the tank. A sealed connecting.