I've used this ring compressor successfully in a variety of bore sizes for many years, though in the 'olden days' I wasn't too far away from a coupla thin strips of plastic or ice cream sticks set opposite one another to ease the piston & rings into the bore.

I've successfully used thin plastic (food containers/ ice cream) or cut down food /drink cans in conjunction large worm drive hose clips  with plenty of lubrication.
Regards Martin.

Too complicated for me. I'll stick with two screwdrivers and a pair of thumbnails.

I've used a hose clamp with success on several R series motors. The wide ones just cover all 3 rings.

cheers guys , all good suggestions

the problem im having is locating the pinned rings whilst clamping up the device .a progressive clamp process will let me do that , instead of a clamp designed for minimum of 75mm  (the pistons are about 66mm )

ill get the right thing ,in time

meanwhile, all silicon coated surfaces have been cleaned up and ready for a new reassembly .

one lives in hope ....

Try clear plastic with hose clips.
Regards Martin.

Smithy dropped by with a certain tool


my what a difference that made
likely less than 5 minutes per piston ,  now home and clean , ready for the next bit

thanks Craig , bloomin awesome

woohoo !  got some parts from blighty

namely:- head gasket and small end  output shaft bearing and running shaft

going together

pretty much back together

to fit up to the frame , oils and tlc till she purrs again

I tip my cap to you sir! You patience, attention to detail, and persistence is unbelievable.

I have never bin deep inside a brick engine. Are the piston rings pinned or have any crazy orientation being a horizontal stroke?

Good going, Chazza! I look forward to hearing it purr to life and catching up with you down the road in a coupla months' time.

caveman wrote:I have never bin deep inside a brick engine. Are the piston rings pinned or have any crazy orientation being a horizontal stroke?

it seems there were some changes ..likely after 1988 ...I have an 88 motor here ,likely from an LT , with the same pistons etc as the 86 variants (first real change to a few things internal and external like foot plates , drive shaft etc )
the motor I used from Rickg has different piston design , including a thinner first compression ring , and pinned second compression ring , approximately the same size in thickness ,  some folklore also indicates that the pistons in the redesign were a little lighter as well . cant be sure on that one at this point , as I didn't do a weight comparison ....bugga ....  but ii did notice that the balance holes (taken out of the crank ) seemed to be less in number and depth ...this could just be a particular crank balance thing , but surmising that there may be some compensation for the engineered expected weights of the piston gear as well ?

you have to remember that after 88 the k100 rs also sported 16 valves ...but in a parallel production path  lt versions - 8 valve rather than 16 valve .. were still being made

 in any case assembly of motor to frame went well , and quickly

with cables, fluid pipes final drive etc all done by days end , ready for a start , which I postponed until the next day ,with just battery and efi computer to connect up

I chose to not use the  starter motor relay for the initial start as I thought the stalled (and relatively tight big end bearings ) torque of the motor to turn it over would be significant and could possibly weld the starter relay .
a very thick cable was attached to the starter motor with direct battery connection (by hand ) attempted . this way I could run the fuel pump continual till I was assured fuel pressure was sufficient ..
amazingly after just 3 attempts he fired up ....note a dry sprag clutch was causing concern with it not engaging at all for several attempts ...but on rotation of the motor ..at last on the third attempt he fired right up ....lots of smoke from build lubrication eventually cleared

an engineering ride around the area on some of the back roads today had me cruising at a little under 3,000 revs for a few hours , just to make sure that the engine crank and conrod parts bedded in somewhat

final panel parts to attach , fairing lowers and radiator cover , knee pads etc  to go on tomorrow after todays success

keep in mind there are three items that haven't run together in the same engine before , output shaft , sprag clutch mechanism , and the crank output gear , so hoping that they will wear to each other over coming days and miles travelled  for a quieter sounding motor

first impressions .....sweet !









thank Darren ...looking forward catching up ...be safe till then ol mate

O-o-o-o-o-h Nice!

:1B:Looking goooood.
Regards Martin.

A great result Charlie. Amazing how the insides of the engine vary, depending on when it was manufactured. Having had a 83 and a 87 K, sitting them next to one another, the number of changes were incredible. Now we know a bit more about the insides.

cheers guys ...thanks for commenting

its a bit hard to even wash FRED with current water restrictions ..(level 5 here - emergency)

meanwhile the engineering ride took me east yesterday , and in amazement the dried up creek beds  that I have been seeing for the last 12 months , actually have some water in them ...at last ...yippee ...lets hope there is some follow up in the coming weeks

Good to hear! FRED lives!

charlie99 wrote:


thank Darren ...looking forward catching up ...be safe till then ol mate

Charlie,
Ol' Ferdinand is looking good! Is this piccie at the Bingara Lookout off the Copeton Dam Road?

no , this was at a small lookout above Emmaville  north of Glen Innes ,  the background was particularly pleasing with some greenery in the scene

we were through there a few weeks ago travelling towards Torrington , and the land was mostly dust , still haven't washed Gerty since , other than parking her out in the rain this week ...yeah a sorry state of affairs  but  once fred is proved reliable , Gerty is in for some tlc to the output shaft and gearbox

Great to see Fred back in the game Charlie!

just an update

leg is healing from the Gerty drop event on the way to Karuah river rally

still 5 weeks to go in the moon boot

input to gearbox bearings were too tight and made some noises , so stripped it out and replaced , with hopefully good preload this time

Fred back together  and ready to rumble over to the Delungra bike show this weekend

yes walking stick is attached ,, well I cant walk without assistance eh ?!!!

You don't need the rear brake anyway Charlie. Good luck with the ride.

seeing that everything is in lockdown

decided to chase vibration whilst at cold idle on Fred ,


I don't remember having the stop disc installed to the output shaft - clutch basket during the last engine rebuild ,,,and the one I found on an old clutch basket assembly is cracked ...blast !



oh well , brass came to mind for fabrication ....so several weeks later a piece of brass turned up (100 x 100 x 1 mm)

over to a mates workshop and onto his new to him lathe

producing this , one for Gerty and one for Fred  alongside the original article (cracked )



wont be long and ill have it installed , but pity the mail was so slow getting here , oh well

being experimental id expect that some fretting could happen over time with the movement of the two assemblies
but definitely worth a try .

Jeez that view of the engine rear looks familiar  

Hope that works well for you it'll be a great fix if it does

been a while with Fred off the road , but today reassembled the rear end , and now looking far more like a bike again .



startup noise was greatly reduced with little or no noise evident from flogging of the output shaft mechanisms


a quick ride around the block a few times shows promising results as well



ill have to put some miles on the beast locally before attempting a good long distance venture , but sounds and looking good so far

Nice job again Charlie

Still gonna put some BMW badges on Fred?

i have a mind for some personalized - designed badges for the tank Arlina , more details on that as i get some good software for the design ...had a friend who has laser etch and cutting ability , locally , but has moved on a bit .... so will plan for something in the future out of 3 or 4 mm aluminum (to keep the theme ) and find another engineer - fabricator to cut the design 

took a ride on the improved cold start knocking sound ...(or lack of ) beast, south today to discuss some issues around with our mate smithy  and just a good catch-up indeed ... he (Fred) ran sweet as could be .....for me still disturbing ...the lack of engine noise emanating from the exhaust ...but i guess il get used to it , but do have a couple of other substitute mufflers  for a good grunty "zorst " in the future 

some pics along the way

and winter is just about upon us , with decidedly cool temperatures along the way  ....brrrrr

Looks great Charlie. Love those flashes on the exhaust sheild.

I recognise the first two locations, so where is the third photo taken Charlie?  

Assuming that Fred is a boy and Gerty is a girl, do you expect there to be a dominant one in the relationship?  As Fred has been getting all the TLC recently, is not Gerty going to be a little jealous?  Senior partner and all that......   

Good to see it all coming together.

The expected result of the union between Gerty and Fred.

Fred is actually a tranny.

Freds frame was originally one of my sidecars named the black girl.

Charlie has transformed a black girl into a white boy named Fred.

Al

AL-58 wrote:Fred is actually a tranny.

Freds frame was originally one of my sidecars named the black girl.

Charlie has transformed a black girl into a white boy named Fred.

Al

 Oh, Geesus.  I don't see this relationship ending well.  

TacKler wrote:I recognise the first two locations, so where is the third photo taken Charlie?  

Assuming that Fred is a boy and Gerty is a girl, do you expect there to be a dominant one in the relationship?  As Fred has been getting all the TLC recently, is not Gerty going to be a little jealous?  Senior partner and all that......   

Good to see it all coming together.

hi dave ...the last pic was at the Ben Lomond turnoff on the new england highway (about 4000 and a bit feet elevation )..looking east .. about 1 k south of the speed camera location ... was getting a little cool about then (for this old fella used to coastal temperatures .....but acclimatizing ...erm somewhat slowly )

im reminded that will crean sent me a comment and reminder in another place  about layers of clothing ...mind you, i only had the summer jacket on at that time , such a good day as i set off . but a trap for later afternoon riders who didnt plan ahead ...lol .. i beter put that top box on him so i can carry a bit more than minor items in the pockets i created ...(such a god send that idea with mobile devices used often ..actually )


poor old gerty has been in repair after the Karuah trip ....so not ignored at all ..with further plans for output shaft fix and a frame work to reduce evident corrosion on all the exposed areas and likely a colour change , likely later this year , as soon as i can prove reliability on fred as a daily ride ...
Gerty is also currently going though a seat cover change after a few years of service and before renewal of rego this month (seat cover is cracked but not all the way through . more uv damage hardening than anything else   as you know she was exposed to radical sun exposure for al the time i had her in q/land outside the awning )

lol martin ....far too much Black .....giggles

lol Al ..i can say without doubt that Fred is defiantly a boy now .... he's been  ground  ,stripped , recovered . set-upon by disgusting hands and thoroughly converted to a totally different feel in both ride and stance on the bike ....i just hope he now accepts this ...and wont try to buck me off in retaliation any time soon ...

just an update ...Fred made it into the Motorworks 2021 Calendar , just a couple of 100x 60 mm snippets of the engine , (right way up this time ) and a late afternoon shot the day club rego was gained , back in the bowels of the calendar   (may and december )...many thanks to motor works for the calendar pack received just today .

Congrats re. the calendar! 

Hang on to it - they may become collectable.

was hoping to see your contributions of excellence chris in there as well ...or did i miss something ?   perhaps i need to re read all those amazing pics ?

International recognition for all your hard work, congratulations.