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| Oil Pressure Relief Valve mod. https://www.ausmini.com/forums/viewtopic.php?f=2&t=46507 |
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| Author: | 1018cc [ Thu Oct 09, 2008 11:48 am ] |
| Post subject: | Oil Pressure Relief Valve mod. |
Is there anything more that I need to know? I have a 5/16ths bolt which I can cut down, and a 9/16th's ball bearing. The only other thing left to do is to cut the existing spring down 3mm (It should currently be standard length because it currently opens at 60psi - which is standard for a De Luxe  ).
Cheers, Nick |
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| Author: | 1310/71 [ Thu Oct 09, 2008 12:29 pm ] |
| Post subject: | |
That's all really. Just remember to take the old seat out - the ball bearing replaces that. Doc also said that the dimensions given on the length of the bolt aren't absolutely critical. The outside end of the spring can be packed with an appropriate washer if need be (will increase pressure if needed). I've done it a few months back with no issues - did improve consistency of pressure on my car. KB |
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| Author: | 1018cc [ Thu Oct 09, 2008 2:09 pm ] |
| Post subject: | |
Just did it. It made such a difference and it was such an easy mod. I took 3mm off and it now opens around 75psi then drops back to 70psi. I can't believe how crappily the standard one seats! It's almost like I just gave my motor a rebuild. I can't believe how much better the oil pressure is  I was just about to change to heavier oil too! 
Thanks 1310/71 & drmini in aust
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| Author: | simon k [ Thu Oct 09, 2008 4:22 pm ] |
| Post subject: | |
lol, I bought the ball bearing about 6 months ago and keep forgetting - how much bolt do you put in the spring? |
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| Author: | Wombat [ Thu Oct 09, 2008 4:23 pm ] |
| Post subject: | |
simon k wrote: lol, I bought the ball bearing about 6 months ago and keep forgetting - how much bolt do you put in the spring?
40mm |
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| Author: | Wombat [ Thu Oct 09, 2008 4:26 pm ] |
| Post subject: | |
Anyone need balls I have some spare. They are a smidgin bigger than required but the Doc says they are OK |
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| Author: | 1018cc [ Thu Oct 09, 2008 4:38 pm ] |
| Post subject: | |
I ended up putting 40.93mm in. I still have enough left over (about 40mm) to do Ash's clubby cause it needs something like this more than mine. Simon, don't forget to take 3mm off the spring when you put it in I just used a grinder to take bits off slowly at a time. Try to grind it flat, but you can always bend the spring a little bit if you don't grind it totally flat. Just remember to put the ground / cut end of the spring into the hex nut end so that the ball can rest in the factory end
Wombat, it may not be worth the postage of posting them to people (unless they are willing to pay for postage). I picked up one 9/16ths ball bearing today for $1. I'm sure I could've got it cheaper if I was buying in bulk. |
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| Author: | simon k [ Thu Oct 09, 2008 4:48 pm ] |
| Post subject: | |
40mm - no worries 1018cc wrote: Wombat, it may not be worth the postage of posting them to people (unless they are willing to pay for postage). I picked up one 9/16ths ball bearing today for $1. I'm sure I could've got it cheaper if I was buying in bulk.
lol, the guy at the bearing shop gave it to me and rolled his eyes - not worth the paper the invoice would be printed on... |
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| Author: | 1018cc [ Thu Oct 09, 2008 4:50 pm ] |
| Post subject: | |
I thought that was pretty good! I rang another shop and got quoted $3.30 + GST + Freight! For 1 (one) ball bearing  When the dude told me $1 I jumped at it. Although I didn't get a receipt though
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| Author: | Wombat [ Thu Oct 09, 2008 4:54 pm ] |
| Post subject: | |
simon k wrote: 40mm - no worries
1018cc wrote: Wombat, it may not be worth the postage of posting them to people (unless they are willing to pay for postage). I picked up one 9/16ths ball bearing today for $1. I'm sure I could've got it cheaper if I was buying in bulk. lol, the guy at the bearing shop gave it to me and rolled his eyes - not worth the paper the invoice would be printed on... I figure it would cost more than they are worth to post but if anyone is desparate ... I found these in my sons garage when he moved in and he was throwing everything from the previous owner out. Probably 12-15 in one of those round tabaco tins - I'll never own enough Minis to use them all 
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| Author: | 1018cc [ Thu Oct 09, 2008 5:02 pm ] |
| Post subject: | |
Here's some piccy's of the old seat. As can be seen looks like it's had some crap get caught in there before. There is a rub mark on the spring and a wierd looking circular mark on the seat itself
Probably has something to do with why I wasn't getting an abundance of highway oil pressure. 
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| Author: | 1310/71 [ Thu Oct 09, 2008 7:50 pm ] |
| Post subject: | |
Wombat wrote: Anyone need balls I have some spare.
Your wife's given them back to you has she? Sorry - couldn't resist
KB |
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| Author: | drmini in aust [ Thu Oct 09, 2008 7:53 pm ] |
| Post subject: | |
1018cc wrote: Here's some piccy's of the old seat. As can be seen looks like it's had some crap get caught in there before. There is a rub mark on the spring and a wierd looking circular mark on the seat itself
Probably has something to do with why I wasn't getting an abundance of highway oil pressure. Just so you all know that plunger is the VALVE, not the seat. The `seat' is pressed into the block and that valve seals against it. Here's a pic of a seat (it's the gizmo on the left) 
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| Author: | gafmo [ Thu Oct 09, 2008 8:23 pm ] |
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Wombat wrote: Anyone need balls I have some spare.
They are a smidgin bigger than required but the Doc says they are OK I'll take two and also two of the voltage reglator for the dash, as i have had to use my spare 
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| Author: | BALLISTIC [ Thu Oct 09, 2008 8:46 pm ] |
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Wombat wrote: I have some spare balls, anyone need balls? Doesn't your wife own them :?: She will be pi$$ed with you when she hears that you actually know where they are and your trying to give them away Wombat wrote: They are a smidgin bigger than required but the Doc says they are OK
Now you are just boasting 
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