930 valve covers for 914-6 |
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930 valve covers for 914-6 |
sixaddict |
Jul 10 2023, 08:27 PM
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#1
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Senior Member Group: Members Posts: 804 Joined: 22-January 09 From: Panama City Beach, FL Member No.: 9,961 Region Association: South East States |
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johnhora |
Jul 10 2023, 08:48 PM
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#2
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Senior Member Group: Members Posts: 866 Joined: 7-January 03 From: Derby City KY Member No.: 107 Region Association: None |
driver's side...
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fixer34 |
Jul 10 2023, 09:01 PM
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#3
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Senior Member Group: Members Posts: 1,085 Joined: 16-September 14 From: Chicago area Member No.: 17,908 Region Association: Upper MidWest |
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sixaddict |
Jul 11 2023, 04:10 PM
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#4
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Senior Member Group: Members Posts: 804 Joined: 22-January 09 From: Panama City Beach, FL Member No.: 9,961 Region Association: South East States |
Great…….thanks for the help.
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Robarabian |
Jul 11 2023, 07:09 PM
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#5
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914 A Roo Group: Members Posts: 592 Joined: 11-February 19 From: Simi Valley, Kalifornia Member No.: 22,865 Region Association: Southern California |
https://pmbperformance.com/products/930-tur...=42805954379954
Deal of the century. 99 bucks each, professionally milled both sides for a 914-6. I dont have access to a machine shop so this was an EZ decision. |
porschetub |
Jul 11 2023, 09:19 PM
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#6
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Advanced Member Group: Members Posts: 4,703 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
My understanding is 930 valve covers are the most leak resistant but I have also heard they must be machined to clear the suspension mounting bolt. Can anyone out there identify where the machining is required. TIA for any help. Yes they are the most leak resistant with the right gasket,I use the Victor Reinz ones with the silicone bead on them, also be aware that if you buy used ones they may not be flat still,mine needed a quick lapping on a sheet of glass,interesting how the LH milled one required more to get flat ?. |
mlindner |
Jul 12 2023, 03:38 AM
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#7
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Senior Member Group: Members Posts: 1,526 Joined: 11-November 11 From: Merrimac, WI Member No.: 13,770 Region Association: Upper MidWest |
I had to take a little more off on both sides from what the picture shows. If you can install engine without the covers and then try to fit.....much better then what I had to grind off under the car to remove then for the first time. Best, Mark
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infraredcalvin |
Jul 12 2023, 08:05 AM
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#8
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Distracted Member Group: Members Posts: 1,523 Joined: 25-August 08 From: Ladera Ranch, CA Member No.: 9,463 Region Association: Southern California |
BTW, they only need to be milled if you wish to remove the covers while motor is installed. My 6 is not milled, I drop engine/trans to do valves.
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mb911 |
Jul 12 2023, 03:12 PM
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#9
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914 Guru Group: Members Posts: 6,871 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest |
BTW, they only need to be milled if you wish to remove the covers while motor is installed. My 6 is not milled, I drop engine/trans to do valves. (IMG:style_emoticons/default/agree.gif) |
porschetub |
Jul 12 2023, 05:12 PM
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#10
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Advanced Member Group: Members Posts: 4,703 Joined: 25-July 15 From: New Zealand Member No.: 18,995 Region Association: None |
BTW, they only need to be milled if you wish to remove the covers while motor is installed. My 6 is not milled, I drop engine/trans to do valves. (IMG:style_emoticons/default/agree.gif) Thats ok but if you are driving a lot reckon that would be a PITA for such a simple modification,not like its a quick job to remove a 6 cylinder engine unless you have a hoist. You don't need to use a mill to remove the material ,a grinder flapper wheel will do the same job and touch up with a good flat file. Certainly a great upgrade over leaking bent magnesuim covers,I resurfaced mine twice and they ended up leaking again after a while. Cheers. |
rgalla9146 |
Jul 12 2023, 06:35 PM
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#11
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Advanced Member Group: Members Posts: 4,563 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None |
Alternate choice.
993 covers. Requires machining for clearance and shorter studs. Provides modern sealing system. Attached thumbnail(s) |
mepstein |
Jul 13 2023, 04:26 AM
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#12
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914-6 GT in waiting Group: Members Posts: 19,307 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
Rory - you would think the modern seals on the 993 engines would be great but we still see leaks from them. One car in particular was a 13,000 mile car.
We have a granite surface stone and it makes a big difference flattening the older style covers. Stick on sandpaper and the sealing surface is flat and clean in five minutes. |
mb911 |
Jul 13 2023, 04:56 AM
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#13
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914 Guru Group: Members Posts: 6,871 Joined: 2-January 09 From: Burlington wi Member No.: 9,892 Region Association: Upper MidWest |
BTW, they only need to be milled if you wish to remove the covers while motor is installed. My 6 is not milled, I drop engine/trans to do valves. (IMG:style_emoticons/default/agree.gif) Thats ok but if you are driving a lot reckon that would be a PITA for such a simple modification,not like its a quick job to remove a 6 cylinder engine unless you have a hoist. You don't need to use a mill to remove the material ,a grinder flapper wheel will do the same job and touch up with a good flat file. Certainly a great upgrade over leaking bent magnesuim covers,I resurfaced mine twice and they ended up leaking again after a while. Cheers. I think it’s easier out of the car. It’s too hard up and down In the car in my opinion |
rgalla9146 |
Jul 13 2023, 05:19 AM
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#14
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Advanced Member Group: Members Posts: 4,563 Joined: 23-November 05 From: Paramus NJ Member No.: 5,176 Region Association: None |
Rory - you would think the modern seals on the 993 engines would be great but we still see leaks from them. One car in particular was a 13,000 mile car. We have a granite surface stone and it makes a big difference flattening the older style covers. Stick on sandpaper and the sealing surface is flat and clean in five minutes. Now you tell me ! Is that a consistent issue ? I'm at 0 mileage...fingers crossed (IMG:style_emoticons/default/sad.gif) |
mepstein |
Jul 13 2023, 07:03 AM
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#15
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914-6 GT in waiting Group: Members Posts: 19,307 Joined: 19-September 09 From: Landenberg, PA/Wilmington, DE Member No.: 10,825 Region Association: MidAtlantic Region |
Rory - you would think the modern seals on the 993 engines would be great but we still see leaks from them. One car in particular was a 13,000 mile car. We have a granite surface stone and it makes a big difference flattening the older style covers. Stick on sandpaper and the sealing surface is flat and clean in five minutes. Now you tell me ! Is that a consistent issue ? I'm at 0 mileage...fingers crossed (IMG:style_emoticons/default/sad.gif) They aren’t bad. It’s just not the sure thing you think it would be with that design. We will still often lay in a small bead of sealant to make sure it doesn’t come back 100 miles later. And that’s after cleaning all the mating surfaces really well. |
roundtwo |
Jul 13 2023, 10:10 AM
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#16
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Member Group: Members Posts: 282 Joined: 9-February 20 From: Petaluma, CA Member No.: 23,905 Region Association: Central California |
New to the 914-6 world.
For Clarification: With the modified (milled) valve covers, can you remove them all the way to get to the valves with the engine in the car? I'd like to keep the engine installed while I adjust the valves for the first time on my rebuild 6. Have a quickjack. Or is it just to much of a bitch with the engine in? |
brant |
Jul 13 2023, 02:02 PM
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#17
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914 Wizard Group: Members Posts: 11,632 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
I do the valves on my -6 racecar after every single event weekend
So maybe 5-6 times each summer without removing the engine Yes milling them allows them to be removed with the engine installed |
roundtwo |
Jul 13 2023, 07:25 PM
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#18
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Member Group: Members Posts: 282 Joined: 9-February 20 From: Petaluma, CA Member No.: 23,905 Region Association: Central California |
I do the valves on my -6 racecar after every single event weekend So maybe 5-6 times each summer without removing the engine Yes milling them allows them to be removed with the engine installed That’s good news. It looks like a very tight fit trying to access the valves. Imagining your racing an unmodified street body type 914. I have a aftermarket set of exhaust headers heat exchangers that are really tough to get on and off so I’d prefer her not to pull the engine to adjust the valves. Creates a lot of work with the oil cooling lines and all the other items needing disconnecting. Thanks. Todd |
brant |
Jul 13 2023, 07:40 PM
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#19
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914 Wizard Group: Members Posts: 11,632 Joined: 30-December 02 From: Colorado Member No.: 47 Region Association: Rocky Mountains |
Unfortunately I do pull the headers off of my car to do the valves on the six
Better than pulling the motor though |
infraredcalvin |
Jul 13 2023, 07:55 PM
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#20
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Distracted Member Group: Members Posts: 1,523 Joined: 25-August 08 From: Ladera Ranch, CA Member No.: 9,463 Region Association: Southern California |
I just drop the engine and tranny low enough to have easy access to top and bottom (8-10 inches or so), car stays on its wheels on a 4 post lift…
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