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Re: Bazmonaut's 3AJ rebuild
Posted: Fri May 15, 2020 7:23 am
by Bowler
bazmonaut wrote: Fri May 15, 2020 12:05 am
First the good news: the honing operation went well. I'm calling it a success. Not as scary as I thought. Lots of oil helped by creating a 'wake' so I could adjust my in/out to match the rotation speed. Also some hand-holding from a mate.
More good news, I took Bowler's prompt and re-measured the piston to bore, and it's 0.053 which is within spec. I took three sets of measurements, at different heights and rotations on the piston and in the bore.
All good so far.
Captain Cock-up did drop in though, when I discovered that it's quite difficult to fit a 96mm piston into a 95mm bore. The piston in the pic below is actually from an SRX, which I should have known because it's stamped 1JK (which I wilfully mis-read as 1VJ... the power of the human mind). This is easily explained because I also have an SRX engine in boxes, and the pistons must have migrated between the boxes over many years and several house moves.
So, thanks Bowler for helping me avoiding awkward disappointment. The £25 rings I was so pleased to buy will stil be used, but on the SRX build and not this one. Good news is that Fowlers appear to be filling orders again so I am going to order a set of standard rings with them.
More later.
Wel, I'm sad to hear about the migration of your piston (is it a seasonal migration? :P ), but good that you caught it in time :)
Re: Bazmonaut's 3AJ rebuild
Posted: Fri May 15, 2020 11:31 am
by bazmonaut
Bowler wrote: Fri May 15, 2020 7:23 am
Wel, I'm sad to hear about the migration of your piston (is it a seasonal migration? :P )
These naughty parts are bed-hopping their way through my boxes I swear. Promiscuous little things.
But WAIT - hold my calls look what just walked in the door:
Re: Bazmonaut's 3AJ rebuild
Posted: Fri May 15, 2020 11:44 am
by cadno
from an engineering viewpoint you can feel the quality, lovely thing
Re: Bazmonaut's 3AJ rebuild
Posted: Fri May 15, 2020 11:47 am
by cadno
I wish Wilbers shocks would breed in my garage
Re: Bazmonaut's 3AJ rebuild
Posted: Sat May 16, 2020 12:33 pm
by bazmonaut
Is nice...
...just checking: the linkage at the bottom is the right way around isn't? The joint should be pointing forwards and not backwards right? Can't find any reference pics.
Re: Bazmonaut's 3AJ rebuild
Posted: Sat May 16, 2020 10:25 pm
by Mezo
Funny that caught me out as well, it seems it would go either way right? i was back & forth wondering the same.
Mezo.
Re: Bazmonaut's 3AJ rebuild
Posted: Sun May 17, 2020 3:41 pm
by bazmonaut
Thanks Mezo - fwoah that's a nice looking linkage! I didn't paint or plate mine cos I wanted to make progress, now wish I had as it stands out like a sore thumb...
Re: Bazmonaut's 3AJ rebuild
Posted: Sun May 17, 2020 6:13 pm
by cadno
Go on, you know you have to remove it now, otherwise you'll be riding along on your otherwise mint 3AJ with that niggling thought in your head
.
Re: Bazmonaut's 3AJ rebuild
Posted: Sun May 17, 2020 6:42 pm
by bazmonaut
cadno wrote: Sun May 17, 2020 6:13 pm
Go on, you know you have to remove it now ... that niggling thought in your head
.
cadno you bastard...
[Sighs, rolls up sleeves...]
Re: Bazmonaut's 3AJ rebuild
Posted: Sun May 17, 2020 6:57 pm
by cadno
sorry fella
you know you have to.
I have a mate who struggles riding Yamaha's that aren't matching numbers, that's taking it to a different level.