XFR/Firecat/Sabercat Regular 128" XF / Firecat/Sabercat chassis

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Old 12-31-2011, 11:22 AM   #1
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Power valve question

I've done the search and read the sticky in tech section but can't find an answer. 2004 F7 efi, I cleaned my apv's last night and removed the cables from the servo motor. I did not pull the cables completely out from between the heads, just pulled them out far enough to clean them away from motor. I also left the plastic clip that holds cables together on. I marked the servo motor for position before removal but didn't mark the side of drum the cables came off. Does it matter? From what I can guess the clutch side goes on first so it will end up closest to engine and the mag side will go on closest to tank. Is that right? Also when checking length do I measure from from the very end of the round stopper on end of cable to housing or from the bottom of cable where it joins stopper to housing to get the 1.35"?
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Old 12-31-2011, 12:13 PM   #2
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makes no difference, as long as they are the same length you are good to go.

measurement is basically the exposed inner cable, between the end of the outer & the round end.
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Last edited by 68ragtop; 12-31-2011 at 12:20 PM.
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Old 12-31-2011, 12:40 PM   #3
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Thanks Ragtop! It's interesting in the sticky article in tech section it says it paramount that the cables be marked each side, thought I had really screwed up! Thanks again!
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Old 12-31-2011, 09:23 PM   #4
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So far New Years Eve spent in shop working on sled. Must be getting old 'cause I'm perfectly ok with it! Got everything back together and took for a rip and everything seems ok. Never checked before but the power valves definitely do not cycle once when it's first started now. Should my 04 F7 efi do it? I don't have a stand so can't see if they're opening at 7000 RPM, it feels good, hit 70 mph between me and my neighbours driveway. From what I've read if they're not working it would be a slug for sure?
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Old 01-01-2012, 01:55 PM   #5
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Borrowed a stand and the valves are opening at high rpm, guess they don't all cycle once?
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Old 01-01-2012, 02:44 PM   #6
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Carbed sleds will cycle once at startup, efi sleds do not cycle at startup. Only under programmed rpm range
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Old 01-20-2012, 06:33 PM   #7
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where are the power valves located
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Old 01-20-2012, 06:50 PM   #8
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Mine don't cycle on startup but they otherwise work fine on my carbed sled. What would that be?
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Old 01-20-2012, 08:09 PM   #9
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 Quote: Originally Posted by slednecks1000 View Post
where are the power valves located
if u dont know where the p valves are, get a mechanic to do urs
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