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terrylittlejohn
Turbo Slant 6
Joined: 17 May 2005
Posts: 953
Location: CBS Newfoundland Canada
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Post subject:
crank case pressure
(Mon Sep 19, 2011 1:15 pm)
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| this is a fresh engine,first race weekend, i was using a vented catch with 2 breather line to the valve cover. i use to have 2 lines to header collector,with the catch can i am getting oil spray from dipstick and oil seeping from block /head surface along lifter valley.how do most control crank pressure under boost ?
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Shaker223
Turbo EFI
Joined: 20 Sep 2006
Posts: 1135
Location: The Hand
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Post subject:
(Mon Sep 19, 2011 4:13 pm)
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| I'm not doing anything special. |
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Reed
Supercharged
Joined: 03 Nov 2002
Posts: 8517
Location: Fircrest, WA
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Post subject:
(Mon Sep 19, 2011 4:15 pm)
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| Almost every slant six I have ever owned has had oil seep from the block/head surface along the lifter valley. I don't think a leak from that area is related to boost. |
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Joshua Skinner
Supercharged
Joined: 27 Jan 2005
Posts: 6465
Location: Portland, Oregon
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Post subject:
(Mon Sep 19, 2011 4:18 pm)
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| Have you run a leak-down test to check the ring seal?
_________________
Joshua Skinner
car nut, telecom tech, tool using mammal
'72 Dart Swinger
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terrylittlejohn
Turbo Slant 6
Joined: 17 May 2005
Posts: 953
Location: CBS Newfoundland Canada
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Post subject:
(Mon Sep 19, 2011 6:08 pm)
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| this my first time with a cooper head gasket, i found a thin skin of cooper silicone work on stock gaskets to stop oil leaking just along the thin side of the lifter valley side ,are cooper gaskets harder to seal on this side ?
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1974duster kev
Turbo Slant 6
Joined: 13 Jul 2007
Posts: 624
Location: clearwater florida
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Post subject:
(Mon Sep 19, 2011 9:25 pm)
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I coated my copper gasket with hylomar I don't have any oil leaks.
I plugged the pcv to the carb and now use a elec vac pump hooked to the vavle cover along with a breather on the firewall side of the valve cover.
Kev_________________  |
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terrylittlejohn
Turbo Slant 6
Joined: 17 May 2005
Posts: 953
Location: CBS Newfoundland Canada
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Post subject:
(Tue Sep 20, 2011 3:42 am)
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| i never heard of hylomar , i use mopar performance spray sealer from our local dealer,is that that name of the product or the company? were did you buy it? with the vac pump, did you have blow-by problems? also what rings and gaps are you running?
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turbo66valiant
EFI Slant 6
Joined: 19 Apr 2008
Posts: 349
Location: SoDak
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Post subject:
(Tue Sep 20, 2011 7:19 am)
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Car Quest had some Hylomar for my slant. I don't run a pcv also, just a valve cover breather. I get just alittle oil residue around the breather but not much.
Our turbo 318 was doing what yours is doing and we switched to copper and special sealant and it cured the problem. We tried all sorts of things and finally changed gaskets.
Later
Ryan |
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terrylittlejohn
Turbo Slant 6
Joined: 17 May 2005
Posts: 953
Location: CBS Newfoundland Canada
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Post subject:
(Tue Sep 20, 2011 11:25 am)
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| anyboby running gapless rings? i e-mailed total seal and they quoted $183us to make a set to fit my 3.48" bore, i`m having a hard time finding rings for this bore size.
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1974duster kev
Turbo Slant 6
Joined: 13 Jul 2007
Posts: 624
Location: clearwater florida
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Post subject:
(Tue Sep 20, 2011 5:58 pm)
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My rings came with the wieso piston/ k1 rod kit from that group buy on the forum if i remeber correctly I did my top ring .018 and second ring .022 per the instructions for ring gapping on a turbo motor from wiesco. Everything looks good my valve cover doesn't get any oil around the breather at least I haven't noticed any.
Kev_________________ |
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Shaker223
Turbo EFI
Joined: 20 Sep 2006
Posts: 1135
Location: The Hand
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Post subject:
(Tue Sep 20, 2011 6:12 pm)
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Call Wiseco, they have a large selection of "tuner" rings and they might have something off the shelf. My piston is actually 3.4645"
I run the PVC with no problems along with the normal vent in the VC. |
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olafla
Turbo EFI
Joined: 17 Jan 2006
Posts: 1309
Location: Oslo, Norway
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Post subject:
(Tue Sep 20, 2011 10:03 pm)
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Hi terrylittlejohn.
See this link to hylomarsealant.com. Many pro enginebuilders use it, good stuff!
Olaf.
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Aspenized
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Shaker223
Turbo EFI
Joined: 20 Sep 2006
Posts: 1135
Location: The Hand
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terrylittlejohn
Turbo Slant 6
Joined: 17 May 2005
Posts: 953
Location: CBS Newfoundland Canada
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Post subject:
(Thu Sep 22, 2011 3:40 am)
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| when you apply this do you just spread a thin layer over both sides of the cooper head gasket?
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1974duster kev
Turbo Slant 6
Joined: 13 Jul 2007
Posts: 624
Location: clearwater florida
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Post subject:
(Thu Sep 22, 2011 6:35 am)
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I used the spray can, I sprayed the whole can on both sides
Kev_________________ |
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