Crankcase leak on 90 evo ?
Stellar HDF Member
Joined: Feb 2009
Posts: 2,936
Likes: 20
From: Driftless Area
I ride a 90, doesn't leak yet, would the torque arm prevent this or is it just in the machining? I was just about to scratch this post when I saw it was started in April until I looked at the last post date.
Last edited by 1skrewsloose; Oct 13, 2009 at 09:35 AM.
HDF Community Team
Joined: Dec 2005
Posts: 5,432
Likes: 2,632
From: NC USA
That's NOT a common problem, but the cases on some years were cast so very thin there, compared to the sprocket (left) side case. And some were machined deep and to a square corner under there. Certainly not something I'd ever worry about unless it leaked and even then, it'd have to drip regularly before I'd pull an engine for that.
Stellar HDF Member
Joined: Feb 2009
Posts: 2,936
Likes: 20
From: Driftless Area
That's NOT a common problem, but the cases on some years were cast so very thin there, compared to the sprocket (left) side case. And some were machined deep and to a square corner under there. Certainly not something I'd ever worry about unless it leaked and even then, it'd have to drip regularly before I'd pull an engine for that.
Thread Starter
|
Tourer
Joined: Apr 2007
Posts: 285
Likes: 2
From:
Mine leaks really bad, so it seems. if riding the bike the oil gets all over the engine and tranny from the updraft. when i stop it looks like a hole is in the bottom of the egine. i clean it and just start the engine and let it idle on the lift. after a few minutes i can see oil run out of the area that t150evj pictured. I will bust the case this winter and see what i find. thanks t150evj for your assistance.
later ........
paco
later ........
paco
Stage IV
Joined: Jan 2013
Posts: 4
Likes: 0
From: Capo Beach Ca
I have a 90 Evo with a BDL open drive. The oil leak started - changed seal and sealed magneto screws - still had leak; it got worse.
Rode it for an hour - parked it - removed the belt drive - removed the timing hole plug - sprayed some soapy water around the crank case bearing housing - wrapped a rag around the air nozzle and shot a short blast of air in the timing hole - sure enough the bearing housing was blowing bubbles!
Ordered a pair of Ultima Cases for $710.00 and fixed it. No leaks and runs like a striped *** ape!
Rode it for an hour - parked it - removed the belt drive - removed the timing hole plug - sprayed some soapy water around the crank case bearing housing - wrapped a rag around the air nozzle and shot a short blast of air in the timing hole - sure enough the bearing housing was blowing bubbles!
Ordered a pair of Ultima Cases for $710.00 and fixed it. No leaks and runs like a striped *** ape!
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
It will certainly help as it eliminates flexing between tranny and motor.
Ultimate HDF Member
Joined: May 2006
Posts: 6,590
Likes: 444
From: Ohio
Necro-post aside, at least he made a contribution to the subject.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Verdad Gallardo
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Stellar HDF Member
Joined: Jul 2011
Posts: 2,583
Likes: 115
From: Boston, MA
nice work Mike. I have often wondered about those ultima cases. We have at least one resident expert in da forum who is confident in their products and when i say expert i mean it for sure and pay careful attention to his posts.
Seasoned HDF Member
Joined: Dec 2010
Posts: 7,736
Likes: 1,524
From: Coromandel Peninsula New Zealand
The thread was current, I don't care how old the posts are, somebody was interested in the subject.