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Registered
Join Date: Jul 2002
Location: Atlanta
Posts: 7,125
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Hose nipple pulled out of lower plenum; how to fix?
Hi guys
helping a neighbor prep his pretty stock 87 Turbo for sale and I am chasing a lack of idle...it wont idle unless you keep it running with the gas. After searching around the forum and it seems most likely air/vacuum leak. So I took the plenum off the motor and this fell out, does not seem like it would of been leaking much but it is not right. Can I glue it back in? What kind of glue? JB Weld? or maybe just a metal to metal 2 part epoxy? Thoughts on this and point me to any things to check while I have it apart for the idle problem much appreciated. The o-rings all seem OK. I tried searching maybe using the wrong terms. Thanks again.  
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erik.lombard@gmail.com 1994 Lotus Esprit S4 - interesting! 84 lime green back date (LWB 911R) SOLD  RSR look hot rod, based on 75' SOLD 73 911t 3.0SC Hot rod Gulf Blue - Sold. |
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09-12-2009, 01:24 PM
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Registered
Join Date: Mar 2008
Posts: 1,083
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Maybe drill and tap it for a fitting.
Or have one welded on for a more permanent solution. -Adam |
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09-12-2009, 01:31 PM
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Acceleration Junkie
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JB Weld or any good 2-part epoxy rated for moderate heat.
Check all vac hoses, AAR/AAV valves. Assure both sides of distributor vac advance pot are leak free (Mity-vac). Look carefully at phenolic blocks, assure they are not craked, replace the gaskets, top and bottom. Good luck.
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Chris Toy 356-930 Gone
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09-12-2009, 01:38 PM
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Banned
Join Date: Nov 2007
Location: Rockwall, Texas
Posts: 8,559
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This is simply an interference fit - it loosens with heat, vibration and time - JB Weld works great for this repair/modification (and is a very common practice) . . .
RG |
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09-12-2009, 01:40 PM
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Ingenieur
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The factory glued them in originally. For repair I would use Red Loctite 262. This Loctite grade needs to be heated with a torch to come loose again, so be sure you have the fitting pointed in the correct direction before it dries. With that thing loose you would have one hell of a vacuum leak.
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09-12-2009, 01:44 PM
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Registered
Join Date: Jul 2002
Location: Atlanta
Posts: 7,125
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Wow this place is better than the regular 911 forum. Thanks so much.
Sounds like good practice to replace the orange o-rings while it is apart. I will have the neighbor buy a mity vac. I noticed one of the vac lines on the distributor had a split, I was able to cut the split part off. maybe that was the problem. Any way I will report back as I go.
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erik.lombard@gmail.com 1994 Lotus Esprit S4 - interesting! 84 lime green back date (LWB 911R) SOLD RSR look hot rod, based on 75' SOLD 73 911t 3.0SC Hot rod Gulf Blue - Sold. |
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09-12-2009, 01:45 PM
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Registered
Join Date: Jul 2002
Location: Atlanta
Posts: 7,125
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Yah it was still in there but it just pulled out when I went to pull the hose off. I would think a vacuum leak there would cause a high idle?
OK so it was glued from the factory there was the remenants of glue there but I figured it was fixed once before. Good point on the direction of the nipple there is not a lot of room for error in that (or any really) area of the 930 engine bay.
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erik.lombard@gmail.com 1994 Lotus Esprit S4 - interesting! 84 lime green back date (LWB 911R) SOLD RSR look hot rod, based on 75' SOLD 73 911t 3.0SC Hot rod Gulf Blue - Sold. |
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09-12-2009, 02:59 PM
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1964 Porsche 356 79-3.3 Liter 930 Turbo
