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[harleyguynv]

I hate to report that the rear cylinder is seeping at the base since I had the head campaign done about 2000 miles ago. They installed new cylinders and pistons when they did the work. I had the service manager at the dealer who did the work look at it and he was disappointed to say the least. I am going to watch it and see if it gets worse before I decide what to do next.

[Hoist!]

I hate to report that the rear cylinder is seeping at the base since I had the head campaign done about 2000 miles ago. They installed new cylinders and pistons when they did the work. I had the service manager at the dealer who did the work look at it and he was disappointed to say the least. I am going to watch it and see if it gets worse before I decide what to do next.

Sorry to hear about that so soon hg. Maybe it was the install? Good luck man! Hope it's not the beginning of Round 3!

Hoist!

[sadunbar]

I hate to report that the rear cylinder is seeping at the base since I had the head campaign done about 2000 miles ago. They installed new cylinders and pistons when they did the work. I had the service manager at the dealer who did the work look at it and he was disappointed to say the least. I am going to watch it and see if it gets worse before I decide what to do next.

That $ucks huge, harleyguynv!  Hopefully, it was just a lousy mechanic and not an indication of an "enhancement" failure.   

Who knows, maybe we have another book in our future!   

[RedDevil]

That $ucks huge, harleyguynv!  Hopefully, it was just a lousy mechanic and not an indication of an "enhancement" failure.   

Who knows, maybe we have another book in our future!   

Maybe I'm missing something here, but I can't see how base gaskets leaking would be a sign of an enhancement failure.     Cylinder and piston replacement is not a part of the 0905 enhancement.  Obviously, the dealer found more wrong with the engine then just the heads, possibly more lining slippage then allowed and that's why they replaced the cylinders.  But, IMO, to push the base gasket failure off as a potential enhancement failure, is not an accurate assessment of the product enhancement.  Sounds to me like a dealer mess-up.

   

[sadunbar]

Maybe I'm missing something here, but I can't see how base gaskets leaking would be a sign of an enhancement failure.     Cylinder and piston replacement is not a part of the 0905 enhancement.  Obviously, the dealer found more wrong with the engine then just the heads, possibly more lining slippage then allowed and that's why they replaced the cylinders.  But, IMO, to push the base gasket failure off as a potential enhancement failure, is not an accurate assessment of the product enhancement.  Sounds to me like a dealer mess-up.

   

Maybe I am wrong, but I think what harleyguynv is saying is he also had the cylinders and pistons replaced when they did the "enhancement" - in addition to the "enhancement"!

"I hate to report that the rear cylinder is seeping at the base since I had the head campaign done about 2000 miles ago. They installed new cylinders and pistons when they did the work."

[RedDevil]

Maybe I am wrong, but I think what harleyguynv is saying is he also had the cylinders and pistons replaced when they did the "enhancement" - in addition to the "enhancement"!

"I hate to report that the rear cylinder is seeping at the base since I had the head campaign done about 2000 miles ago. They installed new cylinders and pistons when they did the work."

Right, I got that...but cylinders are not a part of the enhancement package. The title of this thread is leaking after 0905 campaign.  The 0905 enhancement package is heads, gaskets, ACRs and a nut or bolt of some sort.  the dealer made the determination to replace the cylinders in addition to doing the enhancement package (good on the dealer for doing that, but bad that they probably did the install wrong).  All I was saying is that because the base gaskets are leaking, it's not a sign that there's a problem with the 0905 enhancement package, as cylinders are not a part of that enhancement program.  Now if he had said that his head gaskets were leaking after the enhancement was done, then I'd be starting to question as to whether HD got it right.  JMO.

   

[DCFIREMANN]

If I remember correctly when this "PERFORMANCE ENHANCEMENT" was announced. There was something about cylinders and pistons. This was in a memo that the Dealers got. I did get the info from our resident PHD. I tried to call him to see if he remembered what the deal was to get Cylinders and Pistons. The fact that the cylinder was removed a new "O" ring and gasket had to be installed. The person doing the work might of pinched something, or there was a bad mating surface or the motor was reved up before heating up.

I hope for your sake NV it corrects itself.

Be Safe

THE DAWG

[stekat]

My 0905 enhancement upgrade began leaking at the base gasket one day after the work.  The cylinders were not replaced this time.  The base gaskets are a part of the 0905, but are unchanged in design.  Whenever the heads are removed, because of the sandwich stud design Harley uses, the base gaskets should be replaced or the chances of a leak are greatly increased.

This is the third tear down on my '08 for base gasket leak.  The cylinders were replaced once previously.  Nothing they do seems to stop the leak.  The MoCo is pondering what to do now!  We'll see!

[RedDevil]

My 0905 enhancement upgrade began leaking at the base gasket one day after the work.  The cylinders were not replaced this time.  The base gaskets are a part of the 0905, but are unchanged in design.  Whenever the heads are removed, because of the sandwich stud design Harley uses, the base gaskets should be replaced or the chances of a leak are greatly increased.

This is the third tear down on my '08 for base gasket leak.  The cylinders were replaced once previously.  Nothing they do seems to stop the leak.  The MoCo is pondering what to do now!  We'll see!

Sounds like the MoCo needs to step up to the plate and replace your engine.   

   

[grc]

My 0905 enhancement upgrade began leaking at the base gasket one day after the work.  The cylinders were not replaced this time.  The base gaskets are a part of the 0905, but are unchanged in design.  Whenever the heads are removed, because of the sandwich stud design Harley uses, the base gaskets should be replaced or the chances of a leak are greatly increased.

This is the third tear down on my '08 for base gasket leak.  The cylinders were replaced once previously.  Nothing they do seems to stop the leak.  The MoCo is pondering what to do now!  We'll see!

Actually, the base O-ring design was changed.  It used to be round in cross section, now it is square.  I don't see why they thought that would be a big deal, since the base seal was a round cross section since the Twin Cam was introduced and they didn't have a big issue with leaks all those years.

Has the dealer confirmed that the base seals are in fact causing the leak, or is this possibly another case of them assuming it's the base seal when it's actually the oil leaking down the stud holes from the top end?  If it really is the base seal, and they are in fact using the newest square version, and this is the second set of cylinders, then they really need to look at the cases.  H-D may have screwed them up when they enlarged the spigot holes for the 110 cylinders.

Jerry

[stekat]

Actually, the base O-ring design was changed.  It used to be round in cross section, now it is square.  I don't see why they thought that would be a big deal, since the base seal was a round cross section since the Twin Cam was introduced and they didn't have a big issue with leaks all those years.

Has the dealer confirmed that the base seals are in fact causing the leak, or is this possibly another case of them assuming it's the base seal when it's actually the oil leaking down the stud holes from the top end?  If it really is the base seal, and they are in fact using the newest square version, and this is the second set of cylinders, then they really need to look at the cases.  H-D may have screwed them up when they enlarged the spigot holes for the 110 cylinders.

Jerry

That's very true, the o-rings are new but the base gasket is the same.  The other concerns you mention are all possibilities.  Neither the dealer or the factory rep have any answer.  The head gasket shows no sign of leaking down the stud holes.  The current recommendation is to replace the engine.  Pictures were taken and the rep is trying to get the approval.  Should know something soon, fingers crossed!

[skreminegul07]

I cannot be optimistic here in any way shape or form.  HD does not have a clue.  All testing is done in the field.

I think I know where the O ring guys went to work after the space shuttle disaster, not intending to make light of that unfortunate incident.

[skreminegul07]

That's very true, the o-rings are new but the base gasket is the same.   The other concerns you mention are all possibilities.  Neither the dealer or the factory rep have any answer.  The head gasket shows no sign of leaking down the stud holes.  The current recommendation is to replace the engine.  Pictures were taken and the rep is trying to get the approval.  Should know something soon, fingers crossed!

From what I've read and from the parts manual, the O rings is/are the base gasket(s), there is no other gaskets between the cylinder and engine case.

[sadunbar]

From what I've read and from the parts manual, the O rings is/are the base gasket(s), there is no other gaskets between the cylinder and engine case.

Exactly right... the "enhancement" contains the new "square" o-rings.  These are installed at the base diameter of the jug and at the oil return passages.  There is no other gasket at the base of the cylinder.   

[stekat]

Exactly right... the "enhancement" contains the new "square" o-rings.  These are installed at the base diameter of the jug and at the oil return passages.  There is no other gasket at the base of the cylinder.   

WOW! I didn't watch the tech, so I assumed that the Square O-rings were just another addition to the base gaskets; THANKS.  I'll be at the dealer first thing tomorrow.

I wonder why they just don't use both?  Stranger and stranger!