Search found 569 matches

by ndevans
Wed Jun 19, 2019 11:21 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Noted, thanks. It's all on ok now. Hopefully I've found the problem with the gearbox being fiddly. The spring that sits under the gear lever, in the metal cup, was missing. I've found it-but annoyingly, I can't find the nylon bush that sits between the spring and gear lever. When I took it apart, I ...
by ndevans
Wed Jun 19, 2019 7:32 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

I have a small round file, I managed to take enough metal off for the dowel to fit, and it's still round enough. I guess the function of the dowel is to locate the box centre properly wrt the crankshaft, so it's not off centre.

Cheers N
by ndevans
Wed Jun 19, 2019 12:44 am
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Well it was a bit of a struggle, but with a bit of patience we got it back in, as described above. Only slight hitch was that the heater tap got caught on the battery tray, and the arm twisted off. Probably not irreparable. Lots of bolts to do up now, annoyingly one of the captive nuts in the chassi...
by ndevans
Tue Jun 18, 2019 7:56 am
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

midget wrote:
Tue Jun 18, 2019 7:32 am
Interesting. Can I ask where did you source your crankshaft bush from please, and have you had this modified?
I didn't, it was already in the crankshaft. It's an ex-Marina engine, it may have been used in a Minor before I got it.
by ndevans
Mon Jun 17, 2019 11:30 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

The Minor 1st motion shaft protrudes past the bellhousing flange by about 3mm, so it goes all the way through the flywheel, into the crankshaft flange, into the crankshaft itself and finishes about 5mm short of the end of the hollow in the crankshaft, which is well past the bush. Engine now reunited...
by ndevans
Mon Jun 17, 2019 2:57 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

I'm not in a position to check, but the gearbox 1st motion shaft on my box (1098 ribbed box) slightly protrudes past the bellhousing mating flange. As this mates up with the engine backplate, that must mean the 1st motion shaft goes right through the flywheel, and at least partly into the crankshaft...
by ndevans
Mon Jun 17, 2019 9:26 am
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Ah well, it may be original then, the engine serial number dates it to around 1978. I've squirted some oil in there.
The gearbox 1st motion shaft is polished nicely, after 3000 miles in the engine before I lifted it, but not what I'd call worn.
by ndevans
Mon Jun 17, 2019 8:06 am
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

It's an ex-Marina engine, but it didn't come straight out of a Marina. I bought it second hand-maybe it's been used in a Minor or Midget before?
by ndevans
Sun Jun 16, 2019 10:30 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

I think what you're seeing at the back is inside the crankshaft flange. Using a bent paperclip, I've measured the distance from the face of the flywheel to the inside edge of the bush in the flange as ~50mm. That's pretty much twice the thickness of the flywheel. I think the adapter in the flywheel ...
by ndevans
Sun Jun 16, 2019 7:42 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Measured as best as I could, the i/d of the crankshaft flange would seem to be a shade over 1/2". You can just see the inner behind the flywheel in the lower photo. The inside bore of the actual adapter is a shade under 3/4". Haven't measured the 1st motion shaft on the gearbox yet, but it looks lik...
by ndevans
Sun Jun 16, 2019 4:48 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Ah, is it part no. 38 in the diagram below, listed as Bush-drive gear?

If so, it has not been present on this engine, or the 1098 that preceded it, since at least 1998, if not longer.

Is it the oolite or needle roller bush I need?

Cheers N
IMG_20190616_164541~2.jpg
IMG_20190616_164541~2.jpg (1.61 MiB) Viewed 151 times
by ndevans
Sun Jun 16, 2019 4:24 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Oolite bush? Not sure what that is! The crankshaft flange is the original Marina item, unmodified. There's nothing else on or in it. Can't take it apart now, but I'll see if I have any other photos. The flywheel is an exchange modified one from ESM, drilled for 6 bolts. The original Marina flywheel ...
by ndevans
Sun Jun 16, 2019 3:48 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Is this the adapter? The centre boss?
IMG_20190616_153613~2.jpg
IMG_20190616_153613~2.jpg (762.76 KiB) Viewed 166 times
by ndevans
Sun Jun 16, 2019 11:47 am
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

There isn't an adapter, it's a Minor flywheel drilled for the 6 bolt Marina crank, exchange from ESM. Should there be an adapter? On the subject of flywheels, the Minor manual says the 1/4 mark on the flywheel should be aligned with the crankshaft throws of no 1 & 4 cyl. I can't do this, because the...
by ndevans
Sun Jun 16, 2019 10:49 am
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

I improvised.....
IMG_20190616_104820~2.jpg
IMG_20190616_104820~2.jpg (1.01 MiB) Viewed 185 times
by ndevans
Sun Jun 16, 2019 8:26 am
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Should have thought about order of operations! A block of wood between the crank and crankcase would have easily prevented the crank turning, while tightening the bolts! Flywheel fitted before sump is the sensible way to reduce effort. I’ve also seen so many who don’t think of the moments incurred ...
by ndevans
Sat Jun 15, 2019 10:56 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Got the sump, timing cover, backplate and head on now. Got the flywheel on as well, but having a job tightening up the bolts to 40lbft without the crankshaft turning.
by ndevans
Fri Jun 14, 2019 12:15 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Thanks Phil, I'll see if I can source a socket locally.

I got the nut off with a spanner, which is how I did it up after the last rebuild. It's lasted 2 yrs like that, and with the washer tab bent up, it's not going anywhere.

If you're at the National, I owe you a beer!

Cheers N
by ndevans
Thu Jun 13, 2019 10:45 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Ok, good progress. Timing chain back on, alignment checked as suggested, 1 extra shim added. Couple of questions. The camshaft nut is listed as 65lb-ft, but I don't have a suitable size socket. Will I get away with good and tight with a spanner, and do I bend the washer to lock the nut? Cheers N IMG...
by ndevans
Wed Jun 12, 2019 10:56 pm
Forum: Mechanical
Topic: Engine in bits for a rebore-anything else worth doing?
Replies: 154
Views: 3675

Re: Engine in bits for a rebore-anything else worth doing?

Managed to drill it myself, the machine shop can't do it until next week. Couldn't quite get to 16mm, my 15mm drill is bent, but I did manage 12mm. That gives enough adjustment for now. I've also found the tensioner bracket that came with the new pad that I bought, which doesn't have an oversize hol...