05-07-2021, 04:29 PM
While some of you were at Beaulieu and Ruairidh was trying not to fill his Cup with water, I had planned steaming my roller to test the safety valves. But the lack of cab meant I didn't fancy it, so I tried to tackle an oil leak on the RP.
The leak certainly comes from the bit between the dynamo and block and crankcase.
I replaced the square cam bolt a while ago with an allen key job, and this was again favourite. So I distmantled
![[Image: 211999058_10223692833043395_665102318135...e=60E7B73B]](https://scontent-lhr8-1.xx.fbcdn.net/v/t1.6435-9/211999058_10223692833043395_665102318135580973_n.jpg?_nc_cat=110&ccb=1-3&_nc_sid=0debeb&_nc_ohc=WtDwzTCpWewAX_LL9Uh&_nc_ht=scontent-lhr8-1.xx&oh=d14202ddf63f7c31f8bae6f47d5403de&oe=60E7B73B)
![[Image: 213686055_10223692833443405_824610432103...e=60E7D184]](https://scontent-lhr8-1.xx.fbcdn.net/v/t1.6435-9/213686055_10223692833443405_8246104321039198045_n.jpg?_nc_cat=109&ccb=1-3&_nc_sid=0debeb&_nc_ohc=4NiNtxxNoswAX9S_cch&_nc_ht=scontent-lhr8-1.xx&oh=85c6966f8b50c0feb987af69cd1b6feb&oe=60E7D184)
Annealed the copper washer, some tape and some goo later I was confident that it wont leak in future. New joint under the dynamo and some goo, I was pretty happy with that also.
![[Image: 211888041_10223692834843440_484205570218...e=60E90A13]](https://scontent-lhr8-1.xx.fbcdn.net/v/t1.6435-9/211888041_10223692834843440_4842055702189384960_n.jpg?_nc_cat=103&ccb=1-3&_nc_sid=0debeb&_nc_ohc=0S_Ofkb4CWYAX_74qfD&_nc_ht=scontent-lhr8-1.xx&oh=c31eac5b56ce75dfedf252979e314646&oe=60E90A13)
Reassembled without upsetting the timing and started fine.
![[Image: 211513672_10223692835243450_238452200608...e=60E75AE0]](https://scontent-lhr8-1.xx.fbcdn.net/v/t1.6435-9/211513672_10223692835243450_2384522006083741210_n.jpg?_nc_cat=100&ccb=1-3&_nc_sid=0debeb&_nc_ohc=UxWtx0vReLUAX_5g_uH&_nc_ht=scontent-lhr8-1.xx&oh=49ddade39d69f69023e363179fff6ed9&oe=60E75AE0)
A test drive (with the rad on), demonstrates the leak persists. But with the area clean (at least initially) bubbles could be seen from the crankcase to block joint, arse wish I'd have given the front nut a nip before reassembling!.
The block is sick, despite not many miles since a 'rebuild', (bad starter, lots of blowby, fouled plugs and oil consumption, and to top it oil in the water - but no water in the oil) so looks like I need to figure out which pistons the spare (bored) block was bored for. Procure some then give it a top end transplant.
Still goes like stink though!. Will sit at 45-50 3 up. Will use until the leak pisses me off.
The leak certainly comes from the bit between the dynamo and block and crankcase.
I replaced the square cam bolt a while ago with an allen key job, and this was again favourite. So I distmantled
Annealed the copper washer, some tape and some goo later I was confident that it wont leak in future. New joint under the dynamo and some goo, I was pretty happy with that also.
Reassembled without upsetting the timing and started fine.
A test drive (with the rad on), demonstrates the leak persists. But with the area clean (at least initially) bubbles could be seen from the crankcase to block joint, arse wish I'd have given the front nut a nip before reassembling!.
The block is sick, despite not many miles since a 'rebuild', (bad starter, lots of blowby, fouled plugs and oil consumption, and to top it oil in the water - but no water in the oil) so looks like I need to figure out which pistons the spare (bored) block was bored for. Procure some then give it a top end transplant.
Still goes like stink though!. Will sit at 45-50 3 up. Will use until the leak pisses me off.