The BSA A7-A10 Forum

Technical => A7 & A10 Engine => Topic started by: Tarsier79 on 28.08. 2016 00:37

Title: 57 Golden Flash, water in engine\gearbox
Post by: Tarsier79 on 28.08. 2016 00:37
I received my new Baby a few weeks ago, and am still a few weeks away from getting seriously stuck in to the restoration. I was in the garage this morning working on another bike, and for some reason, decided to pop the side cover off the A10 engine, which wasn't too difficult as it was only held on with one screw. I got a puddle of what appears to be water. I had an oil pan nearby, so it didn't make too much of a mess. God knows how it got there, and if there is more further inside the engine and gearbox.

It doesn't look like it has caused any corrosion yet, but I am going to have to investigate further before it does.
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: Peter in Aus on 28.08. 2016 01:16
That is not good *sad2*
Pull the sump plate of and see what is there!
Peter
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: Tarsier79 on 28.08. 2016 07:34
OK, did that, and there was some sitting just in the well. I also opened up the screw in the bottom of the gearbox, and got some watery rusty liquid. The good news, opening the gearbox revealed some other parts I will have to organise. Unfortunately ran out of time to fix this problem properly. It will have to wait till next weekend.
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: KiwiGF on 28.08. 2016 08:02
If the cover was only held on with one screw that's how water could have got in (rain or being washed maybe), the mystery is why it did not leak out! Inside the cover is very clean, no sign of any grease in the Dynamo chain area (chain is missing of course) ....I assume you've cleaned it as opposed to this engine not having run since a rebuild?
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: Peter in Aus on 28.08. 2016 08:09
If it was me I would be doing a full strip down ASAP water in engines and gearbox's is bad new *cry*
Peter
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: Tarsier79 on 28.08. 2016 10:06
Not sure why this was moved here. I didn't think I was asking a technical question.
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: a10gf on 28.08. 2016 10:33
Not sure why this was moved here. I didn't think I was asking a technical question.
A description of a problem that may imply a complete engine and gearbox stripdown seems (to me) to be very technical related.

If lucky, the engine may have been only water in the bottom\sump and no serious damage (rest of engine hopefully saved by residual oil film). From the description (watery rusty liquid) the gearbox seems the most concerning.
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: Tarsier79 on 29.08. 2016 11:14
Anyway. I pulled the gearbox apart this arvo. No major damage as far as I can see.
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: Peter in Aus on 29.08. 2016 11:47
Now that is good news *smiley4*
Peter
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: mugwump on 29.08. 2016 20:26
Water in an engine causes more damage to  bearings than anything else. I would strip the engine.
Title: Re: 57 Golden Flash, water in engine\gearbox
Post by: Tarsier79 on 29.08. 2016 22:05
Yes. I agree with you. In the state the engine is in, it won't take much to strip it. In the mean time, I emptied a can of wd40 into both housings to try flush any leftover water, and protect until I am ready totend to them properly.