Allan
Feb 26 2005, 10:46 PM
I noticed that when I pulled my motor apart the oil pressure sender had no washer under it and there wasn't one in the gasket kit. Does it normally have one?
Thanks
skline
Feb 26 2005, 10:57 PM
I have never seen one, I just put a little plumbers tape on the threads and screw it in. It doesnt bottom out on the case.
Triaddave
Feb 27 2005, 12:37 AM
there is no washer.i found an extra,extra long 90 that clears all the tin. i didn't want to kink the stainless hose line i'm using. the sender will mount towards the back of engine, on top of case at the hole that is never used
dmenche914
Feb 27 2005, 08:42 AM
It is a tapered thread. One caution with Teflon tape, is that if any bits of it get in the oil system, the Teflon bits might clog one of many small oil passages, starving a part of oil, so use a small amount of the tape, and donot let any tape hang past the end of the threads, in fact, leave a couple threads at the end bare to safe guard against torn bits of tape getting in the system.
Being a tapered thread, you need to know when to stop with the torque I believe it is listed in one of the manuals. It is very easy to overdo the torque, and keep going until you have bottomed out, then it will not seal unless you washer it , or best bet is to repair with a 1/8 inch pipe thread pipe, and union.
It was even more a concern on the old Type 1 VW cases made of the softer, but lighter magnesium rather than the type IV aluminum.
IronHillRestorations
Feb 27 2005, 09:35 AM
You don't want to find out how small a piece of teflon tape it takes to damage a bearing! Use some Permatex Aircraft sealant on the threads.