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Remove oil relief valve

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Old Nov 24, 2019 | 06:57 PM
  #11  
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sanman4ever, thanks for the tip.
 
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Old Nov 25, 2019 | 07:08 PM
  #12  
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High oil pressure will not cause transfer to the primary. You should have installed a mechanical gauge prior to taking out the relief valve. It would tell you exactly what is happening with oil pressure.

Also, it can be measured for proper depth with a paper clip without removing the plunger.

Just out of curiosity was the inner primary recently off?
 

Last edited by Ed Ramberger; Nov 25, 2019 at 07:13 PM.
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Old Nov 25, 2019 | 08:06 PM
  #13  
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Ed, I haven't removed the valve. I have the primary apart waiting for new parts to come in. Everything is factory with the exception of the tension-er. The inner has never been off. It has a Baker manual. Never a problem until the last 100 miles. The seal looks good and not 'witness' marks on the spacer. The run-out on the crank side is 3 1/2 thousandths. Bike never pushed, always maintained.
 

Last edited by Peter Carreiro; Nov 25, 2019 at 08:08 PM.
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Old Nov 25, 2019 | 09:24 PM
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Originally Posted by Peter Carreiro
Ed, I haven't removed the valve. I have the primary apart waiting for new parts to come in. Everything is factory with the exception of the tension-er. The inner has never been off. It has a Baker manual. Never a problem until the last 100 miles. The seal looks good and not 'witness' marks on the spacer. The run-out on the crank side is 3 1/2 thousandths. Bike never pushed, always maintained.
They put the Baker transmission in without removing the inner primary? Reason I asked about the inner primary being off is sometimes people put silicone into the bolt holes where the primary seals to the case instead of around the bolt holes and blow out the engine case and then get transfer. Pic attached.

For a high amount of transfer though, I would be looking at the crank seal before fretting about internal damage. Those seals and spacers do not last forever.

On an aside, if it was an EVO I would be asking if it had a stator recently as there are holes that go through the engine case that retain the wire and must be sealed.

 

Last edited by Ed Ramberger; Nov 25, 2019 at 09:34 PM.
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Old Nov 25, 2019 | 10:13 PM
  #15  
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Ed, WOW! They made a mess of that case! Awful. I actually checked all the bolt channels to make sure none were "through." I use a feeler and and then a low pressure air nozzle. The bolts were dry when I removed them too. (inner primary and stator) I just find it odd for a seal to go that quickly. 25K and operated regularly. Time will tell. Thanks for your input and help.
 
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Old Dec 1, 2019 | 06:23 PM
  #16  
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Originally Posted by Peter Carreiro
sanman4ever, I found engine oil in my primary. The breather system is puffing air, so not clogged. I am replacing the seal and spacer. But the seal and spacer seem to be fine. So, I'm not optimistic that was directly the trouble. I am thinking high oil pressure. So, I figure that after I get the left side back together, it would be a good idea to check the integrity of the relief before I run the engine. The oil quantity I found in the primary was approximately 3/4 of a quart after just shy of a 100 mile highway run at normal speeds.

peter..
you sure it was engine and not trans?

heres my dilemma.. primary is a non pressurized enviorement, some models have breathers ( not ours), so if youre pumping anything north of 6-8psi into the primary, the primary would blow a gasket but more readily and immidiately, pump the additional pressure and air in the trans via clutch rod creating more issues like trans oil blowing out.. thats why i asked if it was engine or trans oil..

just thinking out loud here
i wouldve checked and rechecked for trans oil pass thru via the clutch rod first, ive never heard of too much oil pressure blowing into the primary, but if in fact youre the lucky one.. kudos for catching it and alot of us here will remember you for years to come lol

be safe brother
 

Last edited by ghost183; Dec 1, 2019 at 06:37 PM. Reason: typo
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Old Dec 1, 2019 | 06:32 PM
  #17  
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Ghost183, it is certainly engine oil. The engine level was down 3/4 quart after less than 100 mile highway run. That is what prompted me to see where it went. The trans is at proper level. The primary never got high enough level to enter the trans.
 
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Old Dec 1, 2019 | 06:40 PM
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Originally Posted by Peter Carreiro
Ghost183, it is certainly engine oil. The engine level was down 3/4 quart after less than 100 mile highway run. That is what prompted me to see where it went. The trans is at proper level. The primary never got high enough level to enter the trans.

god bless ya brother..

like i said.. its a first for me and ill remember peter carriero.. in a good way ofcoarse!!
 
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Old Dec 1, 2019 | 06:45 PM
  #19  
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on another note..
wouldnt removing the PRV be bandaiding it? unless ofcoarse its blasting the engine with high pressure as you suspect.. i would think that higher pressures would blow excessive into the intake tract via the heads instead of blowing by seals into the primary, but apparently its happening in your case.

but brother.. get a gauge man, its the only way to find the root of the problem without causing more ssues down the line due to removing the PRV, removing it might affect oil travelling north at low engine/low pressure speeds, you might not have an excessive pressure problem, just a bad seal somewhere

they plumb inline at the oil pressure sendor, cant cost more than $20$25 for a simple 1/4 in 1/4 out npt guage

edit...
https://www.ebay.com/itm/Bosch-Style...UAAOSwtjhb26s1
 

Last edited by ghost183; Dec 1, 2019 at 06:52 PM.
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Old Dec 1, 2019 | 07:51 PM
  #20  
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ghost183, I wouldn't be eliminating it. I would be servicing it, just to make sure it isn't sticking in the closed position and therefore not regulating the pressure as it is meant to.. Oil pressure is probably not the issue with the engine oil getting past the seal. It is more likely a crankcase pressure issue. Though the breather system seems to be functioning, it is -really- the only piece of the puzzle that could be restricting the flow of air, and causing excessive pressure in the crankcase. I am going to remove the rocker covers and rebuild the breathers to be sure. Of course, it could simply be that the seal failed on it's own. Thanks for the input.
 
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