EVO All Evo Model Discussion

oil pump help please

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Old May 29, 2018 | 05:17 PM
  #11  
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Pull your breather out and take a look at the bore
 
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Old May 29, 2018 | 05:26 PM
  #12  
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Originally Posted by Kingglide549
Pull your breather out and take a look at the bore
kingglide just off to bed. It’s late in the uk. But I will do this tomorrow after work.

Does the plastic cog just just pull off? Nothing holding it on? What does this breather do?

what am I looking for?

thanks for your help.

Will report back tommorow

daz
 
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Old May 29, 2018 | 05:40 PM
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it comes straight out-no magic.
No worries.
IMO you need to toss it anyway
Look at the bore inside take a pic if it's not smooth and show us.
The plastic breathers have a habit of picking up debris and it gets implaled in the plastic parts.
and starts
Then, in turn, it starts scraping away at the bore .
 
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Old May 30, 2018 | 11:52 AM
  #14  
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Originally Posted by Kingglide549
it comes straight out-no magic.
No worries.
IMO you need to toss it anyway
Look at the bore inside take a pic if it's not smooth and show us.
The plastic breathers have a habit of picking up debris and it gets implaled in the plastic parts.
and starts
Then, in turn, it starts scraping away at the bore .
kingglide I pulled the plastic breather and here are the pics. Looked a little scored to me? I ran my finger inside the bore and you could feel the scoring but it wasn’t deep?






 
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Old May 30, 2018 | 12:14 PM
  #15  
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You found your missing aluminum bits.
That bore should be smooth as silk...like a piston cylinder bore.
The plastic breather has dug it all to pieces.
You can get away with a few mars and scratches, but I would say you need that sleeved.
That is a good example of what a bad idea that plastic breather is,/was.
It is beyond shot and should have been tossed years ago.
Sorry man...
Now at least you know.
 
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Old May 30, 2018 | 12:25 PM
  #16  
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Originally Posted by Kingglide549
You found your missing aluminum bits.
That bore should be smooth as silk...like a piston cylinder bore.
The plastic breather has dug it all to pieces.
You can get away with a few mars and scratches, but I would say you need that sleeved.
That is a good example of what a bad idea that plastic breather is,/was.
It is beyond shot and should have been tossed years ago.
Sorry man...
Now at least you know.
oh wow, really??

Map did this cause my oil pump to die also??

what causes the plastic to do this? You sound like you have encountered this before lol. ?

would this work? https://m.ebay.com/itm/Jims-Breather...0Glide%20FXDWG
 

Last edited by Dazzauk; May 30, 2018 at 12:29 PM.
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Old May 30, 2018 | 12:30 PM
  #17  
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This is a common problem with plastic breathers and yours is the worse I have ever seen.
They collect metal bits like I described earlier and continually spin the debris in the bore.
Yes, you want the metal one as you posted.
Albeit I am not sure how well it will work with the bore all tore up.
I think this is is a good time to pull the engine dwn and check everything.
 
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Old May 30, 2018 | 12:34 PM
  #18  
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Originally Posted by Kingglide549
This is a common problem with plastic breathers and yours is the worse I have ever seen.
They collect metal bits like I described earlier and continually spin the debris in the bore.
Yes, you want the metal one as you posted.
Albeit I am not sure how well it will work with the bore all tore up.
I think this is is a good time to pull the engine dwn and check everything.
do you think this caused my oil pump to get scored up also!

thabks got your help mate. Appreciate it.

Daz
 
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Old May 30, 2018 | 12:51 PM
  #19  
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IDK without a teardown,
But IF I had to bet I would place 1/2 my money on the breather and the other 1/2 on upper valve train area
 
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Old May 30, 2018 | 01:10 PM
  #20  
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Originally Posted by Kingglide549
IDK without a teardown,
But IF I had to bet I would place 1/2 my money on the breather and the other 1/2 on upper valve train area
valave stem oil seals were only replaced last year so fingers crossed the shop checked all the upper valve train area.

I have just just seen that Jims USA make a hand reamer to fit there oversized gear breather so no splitting the cases, what do you think?

https://www.toolsource.com/upper-eng...-p-111115.html
 
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