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850 Cc Minis


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#16 absx2

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Posted 07 June 2016 - 05:37 PM

Ah yes, the riveted early wheels with the offset for full trims. Nice :)

Interesting brake choice though as my mk3`s TLS brakes are better than my Coopers 7`s that are quite scary.any plans to perk them up ?

But same here, I have two mg Metro lumps a 1275 A+ a 1098 four 998`s stored away and the little 850 can stay where it belongs and bring a smile every time.

( none of the motors are for sale, sorry)


Edited by absx2, 07 June 2016 - 06:01 PM.


#17 Cooperman

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Posted 07 June 2016 - 06:35 PM

I rallied in 850's on single leading shoe drum brakes - and won a regional championship.
My only reasons for going to the 7" discs are to avoid having to keep adjusting the front brakes but still keeping the original 3.5" wheels and 145 tyres whilst only having period modifications. I shall also find, hopefully, a period push-button radio. A pair of Lucas 5" period spotlights will also look original and that will be about it.
It is almond green with an OE white roof and grey trim.

#18 mab01uk

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Posted 07 June 2016 - 09:51 PM

My only reasons for going to the 7" discs are to avoid having to keep adjusting the front brakes but still keeping the original 3.5" wheels and 145 tyres whilst only having period modifications.

 

Only found out the other day via the Mk1 forum thread below that the later manufactured standard 3.5" wheels do fit over 7.5" S discs and turn ok.

 

"Many moons ago when all the 3.5", non-S wheels I had ever used were from early cars, I learned that no non-S 3.5s would fit over S 7.5" brakes. Some time after that I got into a "discussion" with someone who had only used later 3.5" wheels. He insisted that all 3.5" non-S wheels fit over 7.5" S discs. Turns out we were both wrong. In general, early wheels don't clear S calipers. Later ones will. I've never tried to pin down when the change was made in the 3.5s that allowed them to fit. I'll leave that to someone else. I did go through all my non-S 3.5" wheels a few years ago. Of the 30 some wheels, about half worked and half didn't."

http://mk1-forum.net...=13940&start=10


Edited by mab01uk, 07 June 2016 - 09:52 PM.


#19 Cooperman

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Posted 07 June 2016 - 10:31 PM

I think original 3.5" wheels may fit 7.5" discs but the datum offset would be wrong.
My 850 will be original as it has all matching numbers.
The 7" 998 Cooper brakes allow the original 3.5" wheels to be fitted with no other mods and for a 1964 car they are a period modification.

#20 CMXCVIII

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Posted 07 June 2016 - 10:38 PM

After owning and driving minis for 33 years I find it amusing to hear peoples different opinions on what is or is not acceptable for today's roads.

So just my two penny's worth, ...

 

... and if I need to do a 200 mile trip its no problem as i`ve been doing it for decades.

 

But your doctor was good, wasn't he? He said he'd driven a Mini too in his youth, and your shaking hands weren't Parkinson's disease and the vibration would wear off if you stopped driving for a week or two! 

 

And he spoke LOUDLY so you could hear him! :lol:

 

Otherwise I agree with you entirely. The pleasure of driving a car is seeing ahead and planning ahead. For many years I've lived by the maxim "it's only slow drivers who want fast cars"

 

Jon



#21 absx2

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Posted 08 June 2016 - 08:13 AM

 

After owning and driving minis for 33 years I find it amusing to hear peoples different opinions on what is or is not acceptable for today's roads.

So just my two penny's worth, ...

 

... and if I need to do a 200 mile trip its no problem as i`ve been doing it for decades.

 

But your doctor was good, wasn't he? He said he'd driven a Mini too in his youth, and your shaking hands weren't Parkinson's disease and the vibration would wear off if you stopped driving for a week or two! 

 

And he spoke LOUDLY so you could hear him! :lol:

 

Otherwise I agree with you entirely. The pleasure of driving a car is seeing ahead and planning ahead. For many years I've lived by the maxim "it's only slow drivers who want fast cars"

 

Jon

 

:lol:  :lol:  That`s a fair comment, I nearly put that in myself.  I have motorcycles if I want to go really fast or nip around twenty cars and a tractor.

I not sure if its the bikes or the minis that have made me deaf and have dodgy hips. :lol:



#22 blackbelt1990

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Posted 08 June 2016 - 04:20 PM

I've heard 850s aren't as economical as 998s. I'd guess that's true if you're having to use more revs for the same speed!

#23 Cooperman

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Posted 08 June 2016 - 04:26 PM

The only reason I can think of is the fact that the later 998's have a higher final drive ratio. The 850's have 3.76.
Driven normally there can't be much difference.

#24 pusb

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Posted 08 June 2016 - 04:29 PM

Speaking from experience, a well maintained 850 Mini will do 70 mph, its just very noisy, and becomes a bit tiresome with your foot constantly pressed to the floor.

 

Acceleration, I found mine to be fine up to about 50 mph, then it just seems to be a bit more difficult.

 

I mostly used mine around town and country lanes. For that 850 Minis are fine, (economy wise I used to get about 40 mpg). Occasional trips on motorways are OK, but I wouldn't want to have to go on a motorway everyday in one.



#25 pusb

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Posted 08 June 2016 - 04:32 PM

Having said that mine is one of the last 850's and they come with a HS4 carb, not sure if the original HS2 carb models were slower?



#26 absx2

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Posted 08 June 2016 - 05:30 PM

There are good ones and bad ones. How much carbon is around the exhaust valves and valve timing make a big difference from one motor to the next.

The good ones are great fun and whats the problem with resting your foot on the floor ? it saves you from getting a stiff ankle :lol:  



#27 Cooperman

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Posted 08 June 2016 - 06:16 PM

When I had an 850 as a daily driver (in 1963 - 4) I used to 'de-coke' it regularly by pouring Redex down the carb whilst holding the revs quite high.

Every 8000 miles I used to remove the head and do a proper de-coke, check the exhaust valves for burning and re-lap the valves.

It seemed to always go quite well, but that is all relative I guess. It would just seem very slow now. It used to average 42 mpg whilst my 1964 998 Cooper gave 36 mpg average.



#28 timmy850

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Posted 09 June 2016 - 12:15 AM

And, unlike a super turbo 8 port 1380 monster engine, you can actually use all of the potential of the engine on the road in a sensible manner. 

 

You also get more time to enjoy your trip!



#29 Podman

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Posted 09 June 2016 - 07:38 PM

Mines a bog standard '74 850, but I like the driving adventure of keeping it on the throttle through the bends, whilst trying to keep up with the rest of the club, when we're on a run!! It's all about keeping your foot in. Ha ha

Edited by Podman, 09 June 2016 - 07:39 PM.


#30 FlyingScot

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Posted 09 June 2016 - 07:44 PM

Mines a bog standard '74 850, but I like the driving adventure of keeping it on the throttle through the bends, whilst trying to keep up with the rest of the club, when we're on a run!! It's all about keeping your foot in. Ha ha


Me too, my 62 Austin countryman still has its original 850 and I like the challenge of keeping up with the "big boys"

FS




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