50 replies to this topic

[dgear1984]

hiya.





I have a mk1 mini and am intenting to make my own cooper s replica.





I have a lot of questions so ill fire away.





How exactly does an original oil cooler fit from the factory. what do the brackets fit like and does anyone have the dimentions of the modified front panel?





On a 67 s would all the right hand tank brackets be screwed of welded in? Where are the lugs positioned for the transfer pipe? Where does the tank strap bolt down? the spare nut thats also part fo the colsing panel for the valance?





What are the differnces between side plate covers for the hardy setup and the rubber type joint? can hardy's be used with pop rubber diff site plate covers?





Are the driveshafts for drum and disc cars the same?





I am undicided what engine to put in my replica. i would like it to have the extra head bolts and simular power to an origional 67 s 1275. what do people recommend? a 1380? are there many 11stud heads to choose from? Will an a+ engine fit on a 67 gearbox?





Is anyone restoring a cooper s in the surrey area which i could look at to amswer many of my questions?





thanks dave

[dklawson]

1) How exactly does an original oil cooler fit from the factory. what do the brackets fit like and does anyone have the dimentions of the modified front panel?

2) On a 67 s would all the right hand tank brackets be screwed of welded in? Where are the lugs positioned for the transfer pipe? Where does the tank strap bolt down? the spare nut thats also part fo the colsing panel for the valance?

3) What are the differences between side plate covers for the hardy setup and the rubber type joint? can hardy's be used with pop rubber diff site plate covers?

4) Are the driveshafts for drum and disc cars the same?

5) I am undicided what engine to put in my replica. i would like it to have the extra head bolts and simular power to an origional 67 s 1275. what do people recommend? a 1380? are there many 11stud heads to choose from? Will an a+ engine fit on a 67 gearbox?

6) Is anyone restoring a cooper s in the surrey area which i could look at to amswer many of my questions?

I can NOT answer MOST of your questions because my car is a '64-S and a lot of the questions you're asking apply to later cars.
1) Based on the picture you have, the first thing you'll need to do for the horizontal oil cooler is replace the vertical slam panel brace with the diagonal one. There are some "L" brackets to support the cooler. I don't know if they get attached to the front panel or the subframe.

2) The RH tank wasn't a standard -S option until 1966. A friend of mine sent me a series of picture of how their RH tank was installed. Rather than describe their pictures... look at the files here:
http://home.mindspri.../pictures/Tank/

3) If your car has the rubber driveshaft couplings the easiest thing to do is use them. I don't know what year Hardy-Spicers replaced the yoke type driveshafts. However, the rubber u-joints can be replaced with QL-5000 (nylon) joints from Q&H. These parts are NLA but can be bought used on eBay. If the nylon cups are intact, the metal u-joint portion can be replaced with driveshaft u-joints from a Triumph TR6 or TR4.

4) I don't think the ENTIRE driveshafts are the same. The CV joint on the disk type shaft is larger. However, you probably can fit the disk type CV joint to the drum type shaft to use the inboard end. Guessworks would know for sure.

5) What gearbox do you have? Is it remote shift, magic wand, or rod-type? Early 850 gearboxes don't have clearance for the long throw of the big-bore crankshaft. Other than that, I think you can mix and match but keep in mind that you'll have to pay attention to the drop gears. I believe these are different between A- and A+

6) Sorry... I'm obviously too far away to be of any look-and-see help.

[redhotmini]

3) If your car has the rubber driveshaft couplings the easiest thing to do is use them. I don't know what year Hardy-Spicers replaced the yoke type driveshafts. However, the rubber u-joints can be replaced with QL-5000 (nylon) joints from Q&H. These parts are NLA but can be bought used on eBay. If the nylon cups are intact, the metal u-joint portion can be replaced with driveshaft u-joints from a Triumph TR6 or TR4.

I think i may have some of the QL-5000 nylon joints at home, new old stock. I can check to make sure i definately have, if you're interested in them as i dont have any use for them

[Jammy]

I can't really help with any of your questions, but this book should be a tremendous help!

Link.

[mk1leg]

Hi..!..LOT997F ...Ihope this helps you with oil cooler, as regards motor I found cooper s 1071 the best but there as rare as hens teeth these days

[dgear1984]

those pictures where a great help. if its possible could i get a picture of where the cross over pipe runs between the tanks? I believe there sould be some tags to jold it in place but not sure where exactly. really wana get my shell 100% right, its easy to unbolt an item thats not right but a shell once you have painted it thats it unless you want differnt colours.

Its a magic wand changer at the mo but have got a remote coming from devon next time my uncle is up my way. i believe its out of a clubman the nmber are

GEARBOX CASING - 22G1128 MOWOG

GEARBOX LAYGEAR - 22G927

CROWNWHEEL/PINION 64/17

I know the front panel gets bent down im just unsure if it gets extended at the same time? Is that leeflet showing how the factory cars had it done or just aftermarket? Does anyone have the sizes of the brackets. Im more than able to fabricating some.

thanks dave

[dgear1984]

I have wet subframes but thinking of going dry for less hassle.

Does anyone sell the domed plate the rubber donut spring sits on?

Would it be possible to change from wet to dry by removing the locking ring for the hydro and replcing it with the domed plate?

Anyone know of anyother differnces?

Would the top mounts be a problem maybe they are differnt.

It seems a shame to get rid of the subframe its on of the better parts on the car when i got it.

[mk1leg]

you can use wet subs ,all you have to do is straighten baynet lugs and rubber conecan be used..

[dgear1984]

Think i may have found a source for the dry cone cups, a company i know normally takes them off when converting to coil overs.

Has anyone had any luck with the oil cooler brakcet dimentions, rh tank linking pipe clips?

Is a 1380 just a rebored 1275? or is it a totally differnt block / have more things than just a rebore been done?

What cars other than cooper s was the 12g940 head fitted to?

Does anyone know if twin 1 1/4 su carbs will be good enough for a fast road 1380?

Have started to read the tuning book. he is a very cleaver and knowledgeable man.

What inlet manifold is required to fit twin 1 1/4 su onto a 12g940 head? i have heard it needs to be 30deg for a mini? correct. what lenght should it be and does anyone know of the part numbers so i can keep a look out on ebay for a bargain?

Thanks LOT

[mk1leg]

"What cars other than cooper s was the 12g940 head fitted to?"

This head was never used on any of the S modles they used 12A185 was early casting and colour coded yellow AFG163 was later and colour coded brown or blue ..Hope this helps.........

[mk1leg]

12G940 was fitted to 1275 austin/morris 1300s/1275 sprite/MG midget/1275GT clubman and very last few mk3 S's

[Jammy]

You'll want twin 1 1/2s on a large bore engine.

[dgear1984]

sorry just to confim a 1380 is a a+ 1275 just bored out?

I have noticed that with the 940 head people go on about larger valves. is there two types of sizes?

What determines to have 1.5 rockers of 1.3 rockers? surely the amount of lobe on the cam requires a certain ratio. whats needed for a 648 cam.

[mk1leg]

"Is a 1380 just a rebored 1275? or is it a totally differnt block / have more things than just a rebore been done?"

A 1380cc block is a offset bored 1275cc block
12g940 head the biggest valve sizes are 37mm inlet/31mm exhust

Edited by mk1leg, 22 October 2007 - 10:41 PM.

[dgear1984]

"Is a 1380 just a rebored 1275? or is it a totally differnt block / have more things than just a rebore been done?"

A 1380cc block is a offset bored 1275cc block
12g940 head the biggest valve sizes are 37mm inlet/31mm exhust

What are the smaller valve sizes?

i take it that means it will mean a differnt crank seeing as they are off set.

how differnt is a mk1 s servo and a mk3 style one? Would a mk3 one look out of place on a mk1 s replica?