Intake madness. Teardown begins.... - Page 4 - Rennlist - Porsche Discussion Forums

Notices
964 Forum
Sponsored By:
Sponsored By:

Intake madness. Teardown begins....

 
Old 07-10-2018, 12:06 AM
  #46  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

Ok- first up. My replacement vacuum check valve arrived...

Name:  photo351.jpg
Views: 730
Size:  943.9 KB

And on it went. Literally takes a few seconds....

Name:  photo266.jpg
Views: 724
Size:  915.6 KB

Drive report - yes, much of what has caused me to head down the road I'm on with this thread, is now taken care of. Resonance flap functions and the car is significantly zippier at wide open throttle. Duh. 19 dollar part.

I think i said up above- it's made by pierburg and you can buy one on amazon for 19 and free shipping through prime- that's the cheapest i found, but did not yet check with sunset. On amazon it's listed as a Volvo part. I'm wondering if these fail so easily due to the gasoline fumes that are in the throttle body. But that's just a wonder. It doesn't seem to be engineered to handle chemicals.

So that's good. On to the fun stuff...
Goughary is offline  
Old 07-10-2018, 12:26 AM
  #47  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

Now- i have been sitting here at night fretting over the removal of things i shouldn't remove. But I'm curious. And I've been shoved into going down the rabbit hole -and to take this thing to the end.

So I've been fully expecting that - since it seems relatively normal to do this- that there would be a seal, some kind of an o-ring in the bushings for the resonance flap (and for the plenums as well). Because, as we know, vacuum in these cars is important , and vacuum leaks cause all kinds of strangeness. So it stands to reason there would be some way this bushing was designed to hold vacuum.

In fact- i was told by the experts- when my motor had a vacuum leak in that bushing , that my throttlebody needed to be replaced, because it's not serviceable and the only way to fix that vac leak was to buy new.

And - I've heard this from others and even read this on rennlist.

So down the hole we go...

Peened ends, do they need to be filed or ground down? No. Just back them out...

Name:  photo84.jpg
Views: 691
Size:  999.9 KB

Name:  photo993.jpg
Views: 695
Size:  875.8 KB

Name:  photo788.jpg
Views: 688
Size:  874.9 KB

And then take out this e-clip...

Name:  photo948.jpg
Views: 687
Size:  919.1 KB

And slide it out from this end...

Name:  photo642.jpg
Views: 699
Size:  961.2 KB

And here you go. These are all the parts.

Name:  photo391.jpg
Views: 685
Size:  900.2 KB

Now what's left in the holes? There is no o-ring. No seal. It's a needle bearing on both sides.

Name:  photo680.jpg
Views: 678
Size:  953.9 KB

Name:  photo677.jpg
Views: 688
Size:  1.05 MB

Name:  photo893.jpg
Views: 686
Size:  1,013.9 KB

So that begs the question. How does it seal?

Well there are two little flat washers on the outside that rest on either side of the shaft. So I'm going to surmise that between the fact that there should be grease in the bearing, and then you have these flat flush washers, that under vacuum, they seal up well enough.

Now. How is this not serviceable? If the bearing is good, you pack it with grease. Service done. Of the bearing is bad. Removing this bearing will be an absolute bear. The hole it sits in doesn't go all the way through. So it's pressed into a stop. And there is no way to grip it to pull it out. So good luck if you ever want to attempt that. Maybe a lot of heat around the outside and it'll loosen up enough. But holy hell.

Thankfully, i have no intention of bothering and no need to, since my bearings are fine. So I'll support them while i take apart the rest of the throttle body and prep for paint, and then repack them on reassembly. And it should be good as new.

Now - all that said, I've only just looked at it. it is possible there is some kind of a sealing ring back there behind the bearing that I'm not seeing yet. But i think we are good to go. Cuz I'm still not taking apart this bearing.

Anyone have any thoughts or light to shed?
Goughary is offline  
Old 07-10-2018, 12:41 AM
  #48  
Silvertarga
User
 
Silvertarga's Avatar
 
Join Date: Jan 2011
Location: chin on taint
Posts: 1,117
Default

trying to find the Pierburg vaslve on Amazon and it doesnt come up using the 7.05817.10.0 number, any help here?
Silvertarga is offline  
Old 07-10-2018, 12:44 AM
  #49  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

Originally Posted by Silvertarga
trying to find the Pierburg vaslve on Amazon and it doesnt come up using the 7.05817.10.0 number, any help here?
Volvo Air Pump Solenoid Check Valve Brand New OEM PIERBURG
Amazon Amazon
Goughary is offline  
Old 07-10-2018, 12:46 AM
  #50  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

Sorry says not eligible for prime. But it was free shipping..so all good.

Black side goes to the hose coming from the throttle body. White side is in the loop for the vac canister and the resonance flap controller.

But- you can check yours easily. Take it out and blow through the white side. It should flow freely. Flip it and blow through the black side. Should not flow. That's all it does. So if yours functions, no need to replace. If not...replace.
Goughary is offline  
Old 07-10-2018, 12:58 AM
  #51  
Silvertarga
User
 
Silvertarga's Avatar
 
Join Date: Jan 2011
Location: chin on taint
Posts: 1,117
Default

Thanks!
Silvertarga is offline  
Old 07-10-2018, 12:59 AM
  #52  
Peteinjp
Addict
Rennlist Member
 
Join Date: Jul 2017
Posts: 373
Default

Peteinjp is online now  
Old 07-10-2018, 01:19 AM
  #53  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

Good read- interesting that he found a seal in his. That's what i had expected. But i see nothing in mine. Maybe they are just so deteriorated they are gone?

Idk. Gotta find out now.
Goughary is offline  
Old 07-10-2018, 02:37 AM
  #54  
Peteinjp
Addict
Rennlist Member
 
Join Date: Jul 2017
Posts: 373
Default

There is no lip left in the bore to cover the seal on the 964. But- from the pics I kinda wonder if there isn’t an o-ring sitting on the inside of the bearing.

Also thought the pressurizing idea was cool and that you might want to give that a try ... but maybe with vacuum.? Maybe your initial thoughts about the washer and grease holding vacuum are spot on.

oring?


Peteinjp is online now  
Old 07-10-2018, 02:46 AM
  #55  
Peteinjp
Addict
Rennlist Member
 
Join Date: Jul 2017
Posts: 373
Default

Then there’s this at post 61

”The original seal in the bearings is a small lip seal, not an o-ring.

On my S4 I just pulled the bearing out and replaced it with new, they're reasonably cheap and come out easily enough with a blind bearing puller and slide hammer.

Just heat the throttle body up in an oven first to expand the surrounding material - makes getting the bearing out much easier.”

Boy I’m just making this worse for ya! First the throttle plate screws and now this.....

Pete











Peteinjp is online now  
Old 07-10-2018, 10:04 AM
  #56  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

Well maybe I'll send this throttle body to you for the first trial run. Better it explode in your car than in mine...lol...cuz it's your fault.

Thanks for the leads. This is interesting.
Goughary is offline  
Old 07-10-2018, 10:14 AM
  #57  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

https://www.ntnglobal.com/en/product...73_en_P076.pdf

Interesting. And when you look at the cross section. You'll see the seals. I actually have a source for those seals. I'm curious if the design of the needle bearings in the one on my bench matches this.
Goughary is offline  
Old 07-10-2018, 11:19 AM
  #58  
Peteinjp
Addict
Rennlist Member
 
Join Date: Jul 2017
Posts: 373
Default

What’s the part number on the bearings in the throttlebody?
Peteinjp is online now  
Old 07-10-2018, 09:28 PM
  #59  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

Ok- so before we begin...

Guess what arrived?

Stainless e-clips...

Name:  photo914.jpg
Views: 636
Size:  1.09 MB

So I test fit one...

Name:  photo153.jpg
Views: 624
Size:  884.4 KB

Name:  photo317.jpg
Views: 632
Size:  927.4 KB

And good to go!

So if anyone else wants one - pm me. It's 35 dollars each. Happy to make them available. I can be super disorganized via pm, and email, so stay on me if i don't respond. But so long as it's not 1000 people pm'ing we should be good...
Goughary is offline  
Old 07-10-2018, 09:29 PM
  #60  
Goughary
Super User
Thread Starter
 
Goughary's Avatar
 
Join Date: Oct 2010
Location: fairfield, CT
Posts: 3,589
Default

Originally Posted by Peteinjp
What’s the part number on the bearings in the throttlebody?
INA E-205846 could be an F, but i think it's an E

And on that note...
Goughary is offline  

Thread Tools
Search this Thread
Quick Reply: Intake madness. Teardown begins....


Contact Us About Us Advertising Cookie Policy Privacy Statement Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: