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Join Date: Jan 2013
Posts: 148
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valve seals loose on guides?
I just got these valve seals and guides from Pelican.
Elring seals and Canyon guides. But I can pust these seals fully on to the guide by hand, and pull it of again, is this normal? Others I've used I had to gently tap them on. 
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02-12-2018, 06:47 AM
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Can you pull them off easily - slip off, or some force required. It doesn't seem to take a lot to hold them in place. Yes, when they have been on an engine for ages they fix themselves quite well. But I have torn an engine down again after a few hrs running and they pull off without too much effort. But were still in place.
Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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02-12-2018, 06:04 PM
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Posts: 148
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Some force required I have to wiggle them of. The valve guides without the deep rigdges on top, you would have to use pliers to get them of.
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02-13-2018, 05:23 AM
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Then I expect they will be fine.
Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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02-13-2018, 08:53 AM
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abit off center
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You could always use a dab of Permatex hard setting on the stem
Sent from my iPhone using Tapatalk
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______________________ Craig G2Performance Twinplug, head work, case savers, rockers arms, etc. |
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02-14-2018, 06:13 PM
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With stock guides I've always had to tap them on with a hammer and no hope to get them of without destroying them.
I would glue them on somehow. You don't want them to come lose, which can happen.
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Magnus 911 Silver Targa -77, 3.2 -84 with custom ITBs and EFI. 911T Coupe -69, 3.6, G50, "RSR", track day. 924 -79 Rat Rod EFI/Turbo 375whp@1.85bar. 931 -79 under total restoration. |
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02-15-2018, 01:09 AM
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Huh?
Safe,
What happens if the valve guide seals come loose? The reason I ask is because my 86 Carrera has a valve guide that is somehow leaking oil into the intake valve which I cannot explain what is causing this. I can post pic's if it will help. BTW, all other guides are dry and appear to have been replaced. I originally inquired here on the forum and many were stumped. Serge Quote:
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02-15-2018, 05:48 AM
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Quote:
It looks really clean, fresh rebuild?
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Magnus 911 Silver Targa -77, 3.2 -84 with custom ITBs and EFI. 911T Coupe -69, 3.6, G50, "RSR", track day. 924 -79 Rat Rod EFI/Turbo 375whp@1.85bar. 931 -79 under total restoration. |
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02-15-2018, 06:00 AM
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Join Date: Dec 2013
Location: Minneapolis, MN
Posts: 202
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I wouldn't use valve seals that weren't making good contact/seal. You'll get a ton of oil in your intake.
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Instagram = glen.cordle for my Porsche artwork and 3D models. |
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02-15-2018, 06:18 AM
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The PO stated that the engine was overhauled to some extent and by looks and compression/leakdown numbers, it appears so, but this leak has been bugging the
hell outta me. How can I check the seal with engine in car? In this case, it's cylinder 5. Quote:
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02-15-2018, 06:27 AM
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Valve seals replacement........
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Nene, You could replace the valve seals and springs with the engine installed. You would need P7I and P7E tools. I have the tools if you need to borrow them. The valve seals should be very tight when installed and should not come off easily by simply pulling them by hand. If you could remove them by hand they are too loose. Tony |
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02-17-2018, 05:54 PM
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Join Date: Mar 2000
Location: Colleyville, TX
Posts: 129
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Quote:
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'74 911S 3.2 '71 911T 2.4 |
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02-19-2018, 03:32 PM
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Yes they would leak oil - they are a seal that is supposed to stay in place. If they ride up with the valve then the guide/valve gap is not sealed - and plenty of oil sloshing around in there. Then as Mike D posted - they will ride up and down on the valve and probably never seat themselves again on the guide. So they will beat down on the top of the guide.
I would take Tony up on his offer of the valve spring tools. bear in mind a loose guide will have same result oil wise. Seal much easier to fix. You are lucky in as much as #5 I probably the easiest to get to of all 12. Alan
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83 SC, 82 930 (track) - Stock except for RarlyL8 race headers, RarlyL8 Zork, K27-7006, 22/28 T bars, 007 Fuel head, short 3&4 gears, NGK AFR, Greddy EBC (on the slippery slope), Wevo engine mounts, ERP rear camber adjust and mono balls, Tarret front monoball camber adjust, Elgin cams, 38mm ported heads, 964 IC. 380rwhp @ 0.8bar Apart from above, bone stock:-) |
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02-19-2018, 05:51 PM
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Thanx all!
And yes, I will take Tony's generous offer. Serge |
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02-20-2018, 05:56 AM
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1969 and 1986 Porsche Targa and Coupe 1720cc and 3
1977 Porsche 911 Targa 2.7s
Porsche
