Search found 2029 matches

by IslipMinor
Fri Jun 14, 2019 6:18 pm
Forum: Mechanical
Topic: Heater upgrade
Replies: 3
Views: 97

Re: Heater upgrade

There is a section in the BMC Workshop Manual that covers fitting the later 'fresh air' heater, complete with the necessary measurements -Section 'SS'. You will need to make a hole in the bulkhead, large enough to take the heat trunking AND the large 'O' ring that protects it through the bulkhead. E...
by IslipMinor
Thu Jun 13, 2019 2:03 pm
Forum: Electrical
Topic: Flashing indicators and trafficators
Replies: 7
Views: 205

Re: Flashing indicators and trafficators

No, you would not need a separate flasher unit, or two, BUT they are not very visible at best, and virtually invisible down low on the near-side on a 2-door! Modern traffic has virtually no knowledge of trafficators, and is not expecting a little arm to stick out from the side of the car to indicate...
by IslipMinor
Thu Jun 13, 2019 12:21 pm
Forum: Electrical
Topic: Flashing indicators and trafficators
Replies: 7
Views: 205

Re: Flashing indicators and trafficators

A diagram showing the use of the trafficators and 2 standard Minor flasher relays for the flashing indicators is shown below: Combined Trafficators and Flashing Indicators.jpg The problem with this 'simple' circuit is that the trafficators are always in use. Assuming that you want to use the 'flashe...
by IslipMinor
Thu Jun 13, 2019 11:25 am
Forum: Mechanical
Topic: Adjustable oil pressure fitting
Replies: 13
Views: 279

Re: Adjustable oil pressure fitting

Phil, 'Sticking plunger/valve'. The only time that I have had any problem relating to oil pressure was when a plunger/valve was made from aluminium and started to 'pick up' in its block bore. Not sure who the supplier was, but I would avoid aluminium valves like the plague! The current one from Pete...
by IslipMinor
Wed Jun 12, 2019 9:23 pm
Forum: Mechanical
Topic: Adjustable oil pressure fitting
Replies: 13
Views: 279

Re: Adjustable oil pressure fitting

Mmmm! 1380 engine, standard crank journals and >70,000 miles on the same crankshaft, but with ~3 sets of new shells over 20+ years. I run a standard spring and pressure valve (no ball bearing etc.). The oil is Castrol 10W/60 and on starting from cold the maximum is ~70psi, dropping to ~65psi hot @ >...
by IslipMinor
Mon Jun 03, 2019 9:28 pm
Forum: Electrical
Topic: Ignition help
Replies: 17
Views: 708

Re: Ignition help

What did you need to do to get it running?
by IslipMinor
Tue May 28, 2019 8:27 am
Forum: Mechanical
Topic: Crankshaft pulle nut?
Replies: 5
Views: 235

Re: Crankshaft pulle nut?

Declan,

That's neat! Next time the pulley is off maybe??
by IslipMinor
Mon May 27, 2019 8:18 am
Forum: Mechanical
Topic: Crankshaft pulle nut?
Replies: 5
Views: 235

Re: Crankshaft pulle nut?

I also use the starting handle dog bolt with the damper crankshaft pulley, but I use Loctite 243 theadlock on the bolt with NO lock washer. With the lock washer, it is a pig to get out with the deeper damper pulley. Even with 'only' 70 lbf. ft. torque, it needs a good impact wrench to undo it withou...
by IslipMinor
Thu May 23, 2019 9:05 am
Forum: Mechanical
Topic: Waterpump
Replies: 5
Views: 245

Re: Waterpump

Shouldn't the 1275 always have the larger impellor? It will not fit the 'small' blocks without some fettling, but will fitting a small impellor pump into the larger engine provide enough cooling capacity?
by IslipMinor
Thu May 23, 2019 9:02 am
Forum: Mechanical
Topic: Large Vacuum pipe angled out of HS2 S.U body
Replies: 8
Views: 260

Re: Large Vacuum pipe angled out of HS2 S.U body

Can you post a picture of the angled pipe please?
by IslipMinor
Sat May 18, 2019 9:52 am
Forum: Electrical
Topic: Ignition help
Replies: 17
Views: 708

Re: Ignition help

Miner-Bob, The picture of the Lucas points shows how easy it is to have the very common problem of connecting the wire from the coil directly to 'earth/ground', instead of to the points, and then twice per engine revolution to ground, via the points. Can anyone who has worked on points-based ignitio...
by IslipMinor
Fri May 17, 2019 10:50 am
Forum: Mechanical
Topic: suspension height
Replies: 9
Views: 315

Re: suspension height

A 1970 Minor convertible has the later, 5-leaf rear springs, so the modification described is not applicable. The 175/65x14 tyres are virtually identical in rolling radius to the standard 145/80x14 tyres, so apart for a bit more cross-sectional width, they should fit without rubbing IF the wheel off...
by IslipMinor
Thu May 16, 2019 5:21 pm
Forum: Mechanical
Topic: suspension height
Replies: 9
Views: 315

Re: suspension height

What year is your convertible? The earlier cars had 7-leaf rear springs and the later are 5-leaf. With the earlier 7-leaf springs you can take the spring apart and use the bottom, shortest spring turned upside down and reassembled on the top of the remaining 6 leaves. The result is lower by about th...
by IslipMinor
Tue May 07, 2019 8:14 pm
Forum: Mechanical
Topic: Differential Ratios:
Replies: 25
Views: 2788

Re: Differential Ratios:

4,200rpm at 70mph = 16.7 mph/1000 rpm. That is within a whisker of what you would expect with a 4.22 rear axle ratio, i.e. a standard 1098 Minor rear axle. With a reasonably well tuned 1275 i.e. ~90 bhp at the flywheel, you can have a combination of a 3.9 AND a 5-speed gearbox, with ~21 mph/1000 rpm...
by IslipMinor
Mon May 06, 2019 5:58 pm
Forum: Mechanical
Topic: Jumping out of gear
Replies: 15
Views: 631

Re: Jumping out of gear

John,

With the exception of the early Frogeye Sprite, all the other Sprite/Midgets had closer ratios than the Minor/A35/A40 etc., so working out the ratios in your box will tell you if it is from a Sprite/Midget or not.

Is it definitely a 'ribcase' gearbox?
by IslipMinor
Sun May 05, 2019 1:59 pm
Forum: Mechanical
Topic: Jumping out of gear
Replies: 15
Views: 631

Re: Jumping out of gear

John, That doesn't explain why you have had to space out the gear lever from the extension. As Phil says, there appears to be something wrong here. Is the gearbox in the car? If not, can you read the part number from the primary/first motion shaft from inside the bellhousing? This part number is uni...
by IslipMinor
Sat May 04, 2019 6:45 pm
Forum: Mechanical
Topic: Jumping out of gear
Replies: 15
Views: 631

Re: Jumping out of gear

a 948 gearstick in a 1098 box? A good thought. The bottom part of the 948 gearlever is shorter than the 1098, so that plus a little bit of wear could mean that 3rd/4th is not engaged fully, so might jump out. Definitely worth checking the gear lever and also the plastic cup at the bottom of the lev...
by IslipMinor
Sat Apr 13, 2019 10:18 am
Forum: Electrical
Topic: Coil wire connections
Replies: 4
Views: 278

Re: Coil wire connections

Ron,

Can you post a picture of the coil connections, and also identify the cable colours and where connected?
by IslipMinor
Fri Apr 12, 2019 7:49 pm
Forum: Mechanical
Topic: Front Wheel Bearings - Face Adjusted
Replies: 22
Views: 1343

Re: Front Wheel Bearings - Face Adjusted

ampwhu, The attached drawing shows the correct way to fit the front wheel bearings. The word 'THRUST' should be stamped on to one side of each of the bearings, and the original BMC fitting instructions say that this must face the spacer. I am not sure that it is always the case with today's bearings...
by IslipMinor
Thu Apr 11, 2019 2:44 pm
Forum: Mechanical
Topic: Front Wheel Bearings - Face Adjusted
Replies: 22
Views: 1343

Re: Front Wheel Bearings - Face Adjusted

Paul, The Minor stub axle is a different design to the Sprite/Midget, which comes directly from the A30/A35. There is no stress concentration in the Minor design, as it has a separate stub axle that presses into the upright, whereas the A30/35 based design is a one-piece forging, so there is a need ...