C3 oil pressure sender

[MrPerkles]

Hi Guys I have a fresh C3 rebuild that is showing crazy oil pressure.I have fitted a new oil pressure sender from an SC ,will this give a different reading to a C3 sender ? Maybe a stuck oil pressure relief valve ?
Here is the engine prior to a first map to sort some fueling issues

[Flat6pac]

The SC and Carrera use 5 atmosphere sending units 911.606.135.00 while the C2 uses the 928 part but I dont know the amount of atmospheres it uses.
Bruce

[MrPerkles]

thanks Bruce
anybody else ?

[Bill Verburg]

I never had experience w/ the SC oil pressure senders but I did w/ the 964s which used 928.606.203.01 the 964 sender gives readings that are double what the original '76 C3 sender(911.613.571.01) gave

SC used
911.613.571.01 >'79 same as the one used on the C3s
and
911.606.213.00 '80>

I don't know what effect the later SC sender might have

[MrPerkles]

cheers Bill
well I have run it in a little more tonight and changed the break in oil,the pressure has now settled down,so I guess I was faffing about nothing.
Thanks anyhow guys

[Flat6pac]

The 76 sender is a 10 atmosphere sender because that is what the guage is, at least in my 76 Turbo.
I missed what c3 represented in the original post.
Bruce