1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Front oil pressure regulator

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Old 12-09-08, 08:25 PM
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Front oil pressure regulator

Hi guys

anyone care to explain how to shim the damned thing?

Im not exactly sure on how you do that...


Any input would be great.

Old 12-09-08, 09:34 PM
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remove it and put two washers underneath the spring.
Old 12-10-08, 09:57 AM
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Originally Posted by diabolical1
remove it and put two washers underneath the spring.
between the piston and the spring?
Old 12-10-08, 06:16 PM
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Or between the spring and housing. Either way, it preloads the spring.

On second thought, put it in the middle.

Old 12-14-08, 01:58 AM
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If you put a shim between the oil regulator and the housing,you also have to modify the back one by putting it on a 2 ton press and pressing it down.Factory pressure is 60. After modifying you should get at least 80.
Old 12-14-08, 06:27 PM
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Originally Posted by JoeyMazda
If you put a shim between the oil regulator and the housing,you also have to modify the back one by putting it on a 2 ton press and pressing it down.Factory pressure is 60. After modifying you should get at least 80.
I am modifing it, thanks
Old 12-14-08, 07:58 PM
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Originally Posted by JoeyMazda
If you put a shim between the oil regulator and the housing,you also have to modify the back one by putting it on a 2 ton press and pressing it down.Factory pressure is 60. After modifying you should get at least 80.
using a vice semi works as well, as does using a third gen regulator.
Old 12-14-08, 08:36 PM
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What is this business of a press? I put 3 washers in the rear regulator when I rebuilt my S5 N/A. To put it back together I just pushed the piston down with a screwdriver before I pushed the new roll pin in.
Old 12-15-08, 05:57 PM
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Disregard my last answer,you should put a shim between the piston & the regulator.
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