Author Topic: Then I broke down (74 mini mild refurb)  (Read 44198 times)

Offline thebluepotato

Re: Then I broke down (74 mini mild refurb)
« Reply #475 on: October 23, 2018, 09:07:50 AM »
I was unsuccessful yesterday getting tires mounted.  Turns out these have a special valve stem that no one carries.  Force sent lug nuts but no valve stems, so a quick email later got the particulars on what is needed.  The UK version of race stems were rather expensive, like $50 for 4 valves.  I found some race valves off jegs for $28 shipped for a pack of 5.  Basically need a hole diameter just shy of 7.5mm.  Maybe next week...

I had same issue with my MB racing 3 piece rims....just found the right size on Amazon and they are stubby.  Just measure and get some off Amazon.  Also, make sure you CHECK all those hex nuts on your rims before mounting for correct torque before using.  Uber important.


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Re: Then I broke down (74 mini mild refurb)
« Reply #476 on: October 23, 2018, 09:14:07 AM »
What torque setting are you using?

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Re: Then I broke down (74 mini mild refurb)
« Reply #477 on: October 25, 2018, 02:24:54 PM »
Ok this fits.  Barely. 


Played with needles today.  The AAM was perfect at any cruise speed, but WOT is about 1:5 too rich for max power.  Slapped in the AAA and it was slightly lean at high cruise and also 1:5 too rich at WOT.  Will use this data to narrow down another needle combo. 

Valve stems came in and work!

Offline MiniGene

Re: Then I broke down (74 mini mild refurb)
« Reply #478 on: October 25, 2018, 11:46:19 PM »
How involved is the process to replace/adjust needles?  Can you do it with the carbs in place, or do they have to come out?

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Re: Then I broke down (74 mini mild refurb)
« Reply #479 on: October 26, 2018, 06:42:25 AM »
How involved is the process to replace/adjust needles?  Can you do it with the carbs in place, or do they have to come out?

It's easy, takes a few minutes.  All you're doing is unscrewung 3 bolts that hold the dashpot housing on.  You pull it off the piston, I cap the tube on the piston that holds the dashpot oil, set the carb sprng aside, pull piston out loosen the sceew that holds the needle to swap in a new needle, then reverse order to reassemble.

Offline MiniDave

Re: Then I broke down (74 mini mild refurb)
« Reply #480 on: October 26, 2018, 09:30:30 AM »
The needle has to go back in till the boss is flush, even with the dashpot piston surface.
1989 Cooper Racing Green
2009 Clubman S
1969 Jaguar XK-E FHC
2004 Audi Allroad 2.7 TT

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Re: Then I broke down (74 mini mild refurb)
« Reply #481 on: October 26, 2018, 02:39:21 PM »
Ok Bruce, coil as hidden as it gets. 

Offline BruceK

Re: Then I broke down (74 mini mild refurb)
« Reply #482 on: October 26, 2018, 03:48:40 PM »
Ok Bruce, coil as hidden as it gets.

 4.gif
1988 Austin Mini
2002 MINI Cooper S
2007 Triumph Bonneville

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Re: Then I broke down (74 mini mild refurb)
« Reply #483 on: October 26, 2018, 04:24:22 PM »
Here's something interesting..  I am adjusting everything on the carbs since I'm fabbing up this new air filter setup.  My throttles have been opening 90-95% instead of full open.  Whether or not that effects power a lot I don't know, but can't help.  Opening 100% now.

Wrapping up the ITG filter.  It's tight tight tight.  Couple things I had to do to make this work.  You can't get the filter on over the ram pipes with the carbs on the engine.  You can't pre assemble and put it all on at once either.  Also can't adjust the jets with the filter on.  So what I did was line everything up, put studs in the ram pipes using tension pin which is tight on the ram pipes and filter base to hold them together. I also used some strong adhesive to make double sure the ram pipes and pins stay together on the base plate.  I drilled out the carb slightly larger for the pins to line things up.  Now that the ram pipes and filter assembly are one big piece, it simply slides on the carb and is bolted down through the ram pipes like normal.  I have allen head  bolts to bolt down since getting a wrench in there is impossible also.   Can't utilize this space more than this!
« Last Edit: October 26, 2018, 04:45:05 PM by 94touring »

Offline Vikram

Re: Then I broke down (74 mini mild refurb)
« Reply #484 on: October 26, 2018, 04:44:24 PM »
Where does your oil pressure line attach to the block? You seem to be running a braided line back to the filter where the typical oil pressure line attaches right?

Edit: ugh never mind, I'm blind. What is that braided line for then?
« Last Edit: October 26, 2018, 04:46:53 PM by Vikram »

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Re: Then I broke down (74 mini mild refurb)
« Reply #485 on: October 26, 2018, 04:49:17 PM »
Where does your oil pressure line attach to the block? You seem to be running a braided line back to the filter where the typical oil pressure line attaches right?

Edit: ugh never mind, I'm blind. What is that braided line for then?

Braided line replaced the hard line to the oil filter.

Offline MiniDave

Re: Then I broke down (74 mini mild refurb)
« Reply #486 on: October 26, 2018, 05:04:19 PM »
But that looks great, and it looks big enough that it will flow well around the bells of the ram pipes. Is that the 15" base plate?What's that loop between the carbs in the first pic?
« Last Edit: October 26, 2018, 05:05:58 PM by MiniDave »
1989 Cooper Racing Green
2009 Clubman S
1969 Jaguar XK-E FHC
2004 Audi Allroad 2.7 TT

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Re: Then I broke down (74 mini mild refurb)
« Reply #487 on: October 26, 2018, 05:42:00 PM »
12" base plate.  The 15 got sent back.  That loop is the choke cable.  Lots of breathing room!

Offline MiniGene

Re: Then I broke down (74 mini mild refurb)
« Reply #488 on: October 29, 2018, 06:06:58 PM »
How involved is the process to replace/adjust needles?  Can you do it with the carbs in place, or do they have to come out?

It's easy, takes a few minutes.  All you're doing is unscrewung 3 bolts that hold the dashpot housing on.  You pull it off the piston, I cap the tube on the piston that holds the dashpot oil, set the carb sprng aside, pull piston out loosen the sceew that holds the needle to swap in a new needle, then reverse order to reassemble.

Interesting.  I had never replaced a needle before and always thought you had to pull the entire carb out.

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Re: Then I broke down (74 mini mild refurb)
« Reply #489 on: October 31, 2018, 02:47:58 PM »
Yah wheels and tires! Smaller diameter, wider, and 2lbs and a hand full of oz lighter each after it was all said and done.  The less diameter opens up some fender gap, but they sure as heck can't rub now.  Probably an equation to see how the diameter effects gearing too.  3.44 to a 3.54?

Offline MiniDave

Re: Then I broke down (74 mini mild refurb)
« Reply #490 on: October 31, 2018, 03:06:12 PM »
OMG, raised white letters - haven't seen those since the 70's.....but then this car is a 70's child too, isn't it?
1989 Cooper Racing Green
2009 Clubman S
1969 Jaguar XK-E FHC
2004 Audi Allroad 2.7 TT

Offline gr8kornholio

Re: Then I broke down (74 mini mild refurb)
« Reply #491 on: October 31, 2018, 03:21:00 PM »
Should've painted them blue, that's the rage right now.  Lol.
I am the GR8KORNHOLIO! Are you threatening me?

Saussie Aussie 1965 Australian MK1 Mini.
"Beavis" - 07 MY/MY MCS, B/MY Konig Daylites, JCW sideskirts, TSW springs, TSW lower rear control arms -- Exploring the country with new friends since 11/09.

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Re: Then I broke down (74 mini mild refurb)
« Reply #492 on: October 31, 2018, 04:43:15 PM »
Took it for a test drive on both the new wheels and 60k volt coil.  Thing zings right along smoother than snot.  Roads were kind of wet so didn't push it but it feels really good cruising along.  In fact could probably stiffen the shocks up a click if I wanted. Speedo read 5 off prior and now reads 10 off according to the gps. 

Offline BruceK

Re: Then I broke down (74 mini mild refurb)
« Reply #493 on: October 31, 2018, 05:18:37 PM »
looks really good with those wheels and tires!
1988 Austin Mini
2002 MINI Cooper S
2007 Triumph Bonneville

Offline Vikram

Re: Then I broke down (74 mini mild refurb)
« Reply #494 on: October 31, 2018, 05:50:36 PM »
Looks awesome, those lower profile tyres are slick too...

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Re: Then I broke down (74 mini mild refurb)
« Reply #495 on: November 01, 2018, 10:01:54 AM »
They work good at cleaning the shop floors. 

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Re: Then I broke down (74 mini mild refurb)
« Reply #496 on: November 01, 2018, 02:37:31 PM »
It decided to dry up outside so I adjusted the height, tweaked tire pressure and went for a drive.  According to my GPS and some rough math using online calculators, my gear ratio is around 3.65 with these tires.  Tops at at 90mph at 6k rpms anyways.  Accelerates like a bat out of hell and sticks to the road.  I pushed it as hard as I feel comfortable and not so much a squel from the tires or wiggle in the ass end.  I actually could use seats with side supports if I'm being honest.  These tires soften the ride a good amount but it doesn't feel sloppy at all. 

Offline gr8kornholio

Re: Then I broke down (74 mini mild refurb)
« Reply #497 on: November 01, 2018, 04:05:45 PM »
That's one thing I love about my cobra classic buckets, but they are for narrow people only and the wife isn't fond of them, but she's also not as fond of taking intersection corners approaching 45 either  71.gif 9.gif
I am the GR8KORNHOLIO! Are you threatening me?

Saussie Aussie 1965 Australian MK1 Mini.
"Beavis" - 07 MY/MY MCS, B/MY Konig Daylites, JCW sideskirts, TSW springs, TSW lower rear control arms -- Exploring the country with new friends since 11/09.

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Re: Then I broke down (74 mini mild refurb)
« Reply #498 on: November 02, 2018, 11:47:01 AM »
Bikewiz had sent some car covers to me.  I'm just now getting around to opening the box.  This is fricken snazzy.   Will work great downtown under my patio/garage where dust and dirt plaster my cars.

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Re: Then I broke down (74 mini mild refurb)
« Reply #499 on: November 08, 2018, 10:39:12 AM »
About to test the gapless plugs.

Edit: zoomed in on the vid from my phone and I see these spark multiple spots at once. 

« Last Edit: November 08, 2018, 11:22:30 AM by 94touring »