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PostPosted: Wed Jan 15, 2020 4:04 am 
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Use a micrometer to measure cranks, a caliper is too inaccurate.
Original size was 1.6255" I believe. More than 0.001" taper or ovality I would regrind the crank.
I recommend using a centre oil pickup, I have seen quite a few cranks worn oval on the crankpins at low mileage due to oil starvation on corners (suspect hooning through roundabouts).

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Peak ignition system fitted. :mrgreen:


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PostPosted: Wed Jan 15, 2020 5:16 am 
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1098cc
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drmini in aust wrote:
Use a micrometer to measure cranks, a caliper is too inaccurate.
Original size was 1.6255" I believe. More than 0.001" taper or ovality I would regrind the crank.
I recommend using a centre oil pickup, I have seen quite a few cranks worn oval on the crankpins at low mileage due to oil starvation on corners (suspect hooning through roundabouts).
I'll get the machine shop to measure, cheers. I would hope that after only 5k kays there would be no ovality/taper, but I'll see.

Can you change oil pickups without removing any gearsets or shafts?

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PostPosted: Wed Jan 15, 2020 6:41 am 
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Well you can check if it has one.
Look under the cluster gear at front corner, if oil pipe goes into a square box strainer, it doesn't have one.
Centre pickup now is shaped to suit a rodchange box, if fitting to a remote box it needs bending forward or the reverse idler arm will wear a hole in the mesh strainer.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Peak ignition system fitted. :mrgreen:


Last edited by drmini in aust on Wed Jan 15, 2020 9:55 am, edited 1 time in total.

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PostPosted: Wed Jan 15, 2020 6:47 am 
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1098cc
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I have a rod change and I don't have a centre oil pickup.

I'll do that while the box is open, no worries.
You've been a great help, I appreciate it.



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PostPosted: Wed Jan 15, 2020 8:05 am 
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Layshaft and cluster gear need to come out.
Take side cover off, remove mainshaft bearing retainer, but mainshaft and pinion don't disturb.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Peak ignition system fitted. :mrgreen:


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PostPosted: Wed Jan 15, 2020 8:02 pm 
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1098cc
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drmini in aust wrote:
Layshaft and cluster gear need to come out.
Take side cover off, remove mainshaft bearing retainer, but mainshaft and pinion don't disturb.

Ah, should have read the earlier post better lol. I'll decide whether I want to mess with the gearbox again.

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Build thread for Mini ute conversion 998cc Turbo


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PostPosted: Mon Jan 20, 2020 6:28 pm 
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out of interest, could a standard pickup pipe be modified to a centre oil pickup?

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PostPosted: Mon Jan 20, 2020 9:36 pm 
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hpal wrote:
out of interest, could a standard pickup pipe be modified to a centre oil pickup?

I am a fitter machinist.
I did it once, cutting 2 pipes up and bending but it's not worth it. Too much mucking around to save $50 or so. And you then need to fit gauze for a strainer. Bends are tricky to miss things.

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank @7000+, 45 Dellorto, RE282 sprint cam, 1.5 rockers, 11.0:1 C/R. Going harder with Peak ignition system fitted. :mrgreen:


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