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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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

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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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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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

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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did I tell you that I won a trophy?

40mm

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David L


My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!

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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David L


My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!

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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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

40mm - no worries



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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did I tell you that I won a trophy?

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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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

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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David L


My greatest fear in life is that when I die my wife will sell my Mini and tools for the price I told her I paid for them!

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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"In two years time your car will be like a lady's clothes, out of date, my car will still be in fashion when I am dead" - Sir Alec speaking to Pininfarina

Your wife's given them back to you has she?
Sorry - couldn't resist
KB

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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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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

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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Stop Licking the Dog...I Don't Care Who Started It

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


Now you are just boasting

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http://www.youtube.com/watch?v=nDMkVq1jRGU