One bent apex seal spring
#1
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Thread Starter
One bent apex seal spring
In the process of rebuilding the 12a out of my '85 which, despite running perfectly, leaked profusely from the dowel o-rings. Everything is apart and I'm part way through inspection, and the only issue I've found so far is that one (1) of the apex seal springs is bent. I'm 99% sure it came out like this (as in I didn't do it!), and doesn't seem to have been causing problems... but obviously I'm not putting it back.
Question is: Would it be stupid to buy a single spring for just this one apex, or should I just order a full set and change them all? It's a stock engine, heavily worked on carb and exhaust - nothing crazy. Just want it reliable (and not gushing oil) for regular use.
(Also going to the later flat-style corner seal springs because one old one somehow escaped between pulling the rear iron and setting it on the bench, and I can't for the life of me find it)
Question is: Would it be stupid to buy a single spring for just this one apex, or should I just order a full set and change them all? It's a stock engine, heavily worked on carb and exhaust - nothing crazy. Just want it reliable (and not gushing oil) for regular use.
(Also going to the later flat-style corner seal springs because one old one somehow escaped between pulling the rear iron and setting it on the bench, and I can't for the life of me find it)
#2
Original Gangster/Rotary!
iTrader: (213)
You can never go wrong replacing internal seals, springs, o-rings, and bearings. I wouldn't reuse that apex seal spring. I also think that moving to the FD corner seal springs is a great move regardless of how many of the old style ones you lose
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MM54 (06-25-21)
#3
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Oh and I found the last wire style corner spring but I'm still going to replace them, those wire springs are pretty janky and the flat ones are cheap
#4
Moderator
iTrader: (2)
how many miles on the engine? chances are good the they're out of spec if u mic them. i'd put new in it. depending on the ware u probably can reuse the metal oil rings. i was able to reuse mine when i did my build yrs ago. the problem i had when reusing everything was low compression during hot starts. if i remember right, i put new apex seals/springs, side seals/reused springs, corner seals/FD style springs. shaft/rotor bearings, all gasket, seals, O-rings needed. viton O-rings for the oil seals.
#6
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Thread Starter
how many miles on the engine? chances are good the they're out of spec if u mic them. i'd put new in it. depending on the ware u probably can reuse the metal oil rings. i was able to reuse mine when i did my build yrs ago. the problem i had when reusing everything was low compression during hot starts. if i remember right, i put new apex seals/springs, side seals/reused springs, corner seals/FD style springs. shaft/rotor bearings, all gasket, seals, O-rings needed. viton O-rings for the oil seals.
This is the only one that doesn't have a nice smooth arch shape, but they seem a bit tired so I'll change them out. Would much rather spend the little extra now than have to take it apart again in a couple years
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