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Touch Nicks Thing
Samba Member
Joined: May 21, 2003
Posts: 2029
Location: Alexandria, VA
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 Posted: Mon Jul 23, 2012 1:46 pm Post subject: Pressure Relief Valve Spring Length |
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| I've been searching a good bit and can't seem to find a good answer on this. I'm looking for the unloaded length of both the pressure relief and pressure control. Any help is appreciated. |
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mark tucker
Samba Member
Joined: April 08, 2009
Posts: 23937
Location: SHALIMAR ,FLORIDA
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| Posted: Mon Jul 23, 2012 1:50 pm Post subject: |
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| I just get new ones.but some are weaker than the oe ones, and then there is the boster springs,I like the booster on the pressure relief,but not a real stiff spring on the oil cooler valve spring,but a little stiffer than the oe cooler spring. |
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W1K1
Samba Member
Joined: March 04, 2004
Posts: 4916
Location: Southern AB
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| Posted: Mon Jul 23, 2012 2:51 pm Post subject: |
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Springs are a funny thing.......
the unsprung length is not so much a factor as the gauge of the wire, how many coils, and the pressure it takes to compress them to a given height.
There was a thread a while back about the spring pressures of the stock springs VS aftermarket replacements.
_________________
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1973 super
1965 squareback 1500E
1971 bay window westy- subi swap |
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jhoefer
Samba Member
Joined: May 19, 2011
Posts: 987
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| Posted: Mon Jul 23, 2012 3:58 pm Post subject: |
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Oil control spring specs for type 1 - 3
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pressure relief
Year Loaded Length Load @ Length
68-69 1-11/16 in (43.20 mm) 5.5 - 9.2 lb
70-79 1-3/4 in (44.10 mm) 12.3 - 16.0 lb
oil control
70 13/16 in (20.20 mm) 6.3 - 7.9 lb
71-79 13/16 in (20.20 mm) 6.8 - 8.4 lb |
These are supposed to give you 42 psi using 30W oil at 158*F at 2500 rpm. Wear limit is 28 psi. |
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