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Intake R&R progress

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Old 02-06-2008 | 07:28 PM
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Originally Posted by worf928
ALSO, I have confirmed that the rubber buffer from the '85 will work in the '87 application for the ISV. (Or did I miss your confirmation?)
Thanks Dave that makes eminent sense about vertical location of injectors.

Sorry I forgot to post about the rubber buffers.

I did order a couple of the 85 buffers (928 110 191 00). When you screw them into the throttle body the studs are slightly too long so the rubber sections are a couple of mm proud of the body.

I just cut a few mm off the stud with a Dremel.

The airbox buffers (931 110 191 00) would be fine as they have a shorter stud on one side. I got a couple of these too but want to save them for the actual airbox as the buffers there have 'plasticised' as discussed above.
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Old 02-06-2008 | 07:45 PM
  #122  
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Originally Posted by StratfordShark
- Two vac lines (the ones I've indicated with the cable ties) go from the throttle body to the 7-way vac distributor piece and the carbon canister diverter valve. In the PET it shows rubber 'elbows' at the connection points. In fact they just go into straight rubber pieces as elbows would make it awkward to have the lines go in correct direction without strain. I've replaced all the elbows but as there's no part number for the straight sections and they don't come in the 928 Specialists 'kit', I've just left the originals but zip-tied them for greater security anyway (I also zip-tied the flappy actuator line where I could also fit a new elbow).
perhaps the silicone vac line kit from Roger would be more flexible? and the kit does away with the 5 way splitter.

Originally Posted by StratfordShark
- didn't have any clamps at the metal connections where two hoses connect to ISV so I put new ones on here as well. The PET does show clamps at these points!
my car didn't eith er and Dave verified none of the cars he's worked don't have them.............PET is mistaken, again
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Old 02-06-2008 | 08:03 PM
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Originally Posted by StratfordShark
I did order a couple of the 85 buffers (928 110 191 00). When you screw them into the throttle body the studs are slightly too long so the rubber sections are a couple of mm proud of the body.
Interesting. I measured the depth of the threaded hole in a t-body today at 18mm. My source says the '85 part is 15mm. I wonder, perhaps if there are casting differences. I will go back and review your measurements posted above. I'm not satisfied with a new part that needs to be modified to fit correctly.

Originally Posted by the flyin' scotsman
my car didn't eith er and Dave verified none of the cars he's worked don't have them.............PET is mistaken, again
PET does have numerious mistakes. But, I cannot think of any reason why it would be a bad idea to put clamps on the ISV inlet and outlet. I'll be doing that from now on.

DOH! EDIT: I didn't measure both holes!
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Old 02-06-2008 | 08:32 PM
  #124  
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Originally Posted by worf928

DOH! EDIT: I didn't measure both holes!
On my throttle body the unmodified buffer was too long for both holes, but IIRC the problem was more obvious for the threaded hole nearer the 'elbow' end of the throttle body. When I saw this I checked the other hole again (at first I thought it was OK) and found the thread was just too short to let the rubber sit properly.
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Old 02-07-2008 | 03:34 PM
  #125  
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Originally Posted by StratfordShark
On my throttle body the unmodified buffer was too long for both holes, but IIRC the problem was more obvious for the threaded hole nearer the 'elbow' end of the throttle body.
I'm getting several different examples of these bonded rubber buffers to try out. It's too late for you but, maybe we can find the right part for future reference.
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Old 02-07-2008 | 04:28 PM
  #126  
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Dave the airbox buffers (931 110 191 00) would work fine with no modification as they have a 10mm thread on the short side.
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Old 02-07-2008 | 08:05 PM
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A quickie - I've cleaned up the throttle quadrant and spring on the throttle body. I'm concerned that this will have removed some grease.

What kind of grease/lubricant would be good to apply here (if any) and which areas are important for smooth throttle action?
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Old 02-07-2008 | 09:09 PM
  #128  
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I sparingly applied some Moly to the spring mechanism but it wasn't that dirty to begin with.

As I tested the TPS (it was good both idle and WFO) I was amazed at the strength of the spring; must be made of the same stuff as the front suspension.
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Old 02-07-2008 | 10:06 PM
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Originally Posted by linderpat
man, I hope the 86 intake R&R doesn't present this many challenges!
it doesnt but i will warn you, at some point you're gunna say.. Holy crap im in deep. But just keep moving forward and next thing you know, you're done
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Old 02-08-2008 | 12:30 AM
  #130  
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Originally Posted by StratfordShark
Dave the airbox buffers (931 110 191 00) would work fine with no modification as they have a 10mm thread on the short side.
That's what I'm hoping. As long as the short end gets enough threads then it should be fine.

Originally Posted by StratfordShark
What kind of grease/lubricant would be good to apply here (if any) and which areas are important for smooth throttle action?
I have been using Wurth HHS 2000 for a lot of applications where a resilient medium to high-pressure grease is called for. It sprays on and isn't viscous at first - so it can flow into gaps like the throttle spring assembly - but then gets nicely viscous after it dries a bit so it doesn't flow away.
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Old 02-08-2008 | 12:44 AM
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Originally Posted by Shark Attack
it doesnt but i will warn you, at some point you're gunna say.. Holy crap im in deep. But just keep moving forward and next thing you know, you're done
I sure hope you can make it down for the fun
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Old 02-12-2008 | 08:26 PM
  #132  
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A package arrived for me yesterday, thanks Roger 928sRus; now where do all those parts go?:


Last edited by the flyin' scotsman; 02-12-2008 at 10:42 PM.
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Old 02-14-2008 | 07:04 PM
  #133  
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I need to bolt in the new knock sensors. I know the correct torque but I'm certain I read one write-up which mentioned putting a smear of something (oil?) on the sensor before bolting it down. Have searched and searched but can't find the reference again!

Does it matter, and if so what's the magic substance?
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Old 02-14-2008 | 11:40 PM
  #134  
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Great timing on the bump guys I am about to get started on doing the R&R this weekend!! Couldn't have come at a better time.

Hope all you guys are making good progress!!

Michael
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Old 02-14-2008 | 11:46 PM
  #135  
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Originally Posted by StratfordShark
I need to bolt in the new knock sensors. I know the correct torque but I'm certain I read one write-up which mentioned putting a smear of something (oil?) on the sensor before bolting it down. Have searched and searched but can't find the reference again!

Does it matter, and if so what's the magic substance?

Never heard or read that one Adrian...............I'm going dry unless someone advises differently (Dave?).
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