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Discussion Starter · #1 · (Edited)
Here's some pictures of my 71 T100R. bought about 6 months ago. It was running, not too well, but managed to get me 75 miles home without breaking down. All was obviously not too well in the engine department though, with some oil working its way out of the top end and lacking power. It looked a lot better than it really was

http://www.triumphrat.net/memberalbums/showphoto.php/photo/19178

It turns out that pretty much everything in the engine is worn out including big ends, cylinders, valves, guides, valve springs, the driveside crankcase is damaged from a badly worn primary chain along with the primary cover.

http://www.triumphrat.net/memberalbums/showphoto.php/photo/19179

Oh, I forgot to mention the damaged conrods, broken fins on the cylinder barrel, stripped exhaust port threads, cracks in head and a stripped rocker bolt thread. A previous owner had cut a hole in the exhaust rocker box and glued a breather in, I really should have spotted that and walked away before I bought the bike.

http://www.triumphrat.net/memberalbums/showphoto.php?photo=19183&cat=500

Anyway I managed to get new barrel and Hepolite pistons and a pair of good used rods from ebay at reasonable prices.

http://www.triumphrat.net/memberalbums/showphoto.php/photo/19181/ppuser/61948

Had the head repaired too.

http://www.triumphrat.net/memberalbums/showphoto.php/photo/19182/ppuser/61948

Hopefully the crank regrind and repairs to the cases will be ready by the weekend.
 

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I love it.. Excellent pics.. hope to see more..
I just got my 72 Daytona jugs back the other day.. +20 now.. pistons and rings at hand. I just have to rebuild the complete bike and I'm away.. lol :rolleyes:

EDIT:- OK.. I was just informed they are +10 the guy who sold me the 20 over pistons on eBay lied.. or didn't know better. Good job my rebore guy did a great job measuring twice!!!

I gues I need to do some filling on my +20 rings now... bah!!
 

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Discussion Starter · #3 ·
Today I picked up my reground crank, repaired primary side crankcase, primary cover and rocker cover from the engine reconditioners. Tomorrow I'll pick up the repaired head from another specialist.

I still need to buy new valves, valve springs, main bearings, a couple of pushrods, the big end shells, new rocker box inspection caps, gaskets, new gearbox sprocket to replace the 21t that came with the bike and various nuts, studs, tab washers etc.

I think it's best not to count the cost, but it aint gonna be cheap that's for sure!
 

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Discussion Starter · #4 ·
I love it..

EDIT:- OK.. I was just informed they are +10 the guy who sold me the 20 over pistons on eBay lied.. or didn't know better. Good job my rebore guy did a great job measuring twice!!!

I gues I need to do some filling on my +20 rings now... bah!!
Are you sure about that, I thought oversize pistons only come in +20 +40 and +60, either way they should be marked on top of the pistons.

Stu.
 

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Are you sure about that, I thought oversize pistons only come in +20 +40 and +60, either way they should be marked on top of the pistons.

Stu.
Genuine hepolite +.010 pistons do turn up occasionally but generally bores are too worn to clean up at this size but if they do you your winning.at 90,00 miles mine are to worn so +.020 will have to do
 

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Genuine hepolite +.010 pistons do turn up occasionally but generally bores are too worn to clean up at this size but if they do you your winning.at 90,00 miles mine are to worn so +.020 will have to do
I won them on ebay for 99c so I'm not complaining.. The cone on the top (hemi) is much shallower than on the original pistons.. Should give better fuel air mix. Not seen any official oversize stamp.. just his felt pen +20 :confused:

I only have 11,000 on the clock (as when I got it) hopefully that's right.. there is a score he couldnt get out at +10 but it's so minor I'm not worrying about it.
 

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Discussion Starter · #7 · (Edited)
Progress update.

I'm finally making some progress with my engine rebuild, have almost all the parts I need now. The picture shows about half of the bits.



New pistons rods and barrel.



Close up of bore hatching



The crank and rods are back together and back in the cases with new mains and big ends.





I've refitted the gearbox with new bearings and added the oil pump and refitted the timing case but haven't taken snaps yet.
 

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Discussion Starter · #8 · (Edited)
Had a productive day today, fitted my nice shiny new valves having lapped them into the recut seats.

Using my ancient spring compreser.


All fitted.




Who needs fancy workshops! I f***ing do! Still have to make do with the work bench and shed for this project.

That's all the engine work I can do for now, need to strip and paint the frame.
 

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Discussion Starter · #9 · (Edited)
After refitting the valves I spent some time washing the oil tank, the pictures show some of the metal that came out (this was on about the 3rd washing with parafin).






The bike was a runner when I bought it, and even ran quite quietly with no knocks. None of the main bearings had failed and were, I believe the originals. My theory is that some time shortly before selling it on the PO had a piston break up and replaced it.

It shows that just rebuilding the top end after holing a piston is going to store up problems and big end failure will most likely follow.

The crank was pretty sludged up too (not just the tube but the whole oil gallery) and was quite difficult to get properly clean.
 

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Discussion Starter · #10 ·
Having got bored with washing the oil tank (and ran out of paraffin) I set to stripping down the frame, from a rolling chassis to this:



I want to take the forks off still attached to the bottom yoke as don't want to rebuild them and don't have the spring compressing tool, but got stuck as didn't have a socket or ring spanner to fit the steering stem top nut. It measures up to just over 1 1/4" AF I guess it may be a Whitworth size, anyone know?

I also reckon a 34mm socket will fit well enough to do the job. Hopefully I'll get something tomorrow along with a few cans of paint stripper and another gallon of paraffin.
 

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Oogie,

When you get back to that oil tank, you might want to get inside with a brush or something to dislodge all the crud in the nooks and crannies. Yes, it's a crummy job, but well worth the effot. I would think that you can find diesel brushes in the UK, which look like giant bottle brushes, only metal. A handfull of sheet metal screws or sheetrock screws works wonders as well.

regards,
Rob
 

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Discussion Starter · #12 ·
Thanks for the tip Rob,

I was planning to try to do something with brushes, but the screws sounds like a good idea.

I assume you just throw in a handful of screws half fill with paraffin or some other degreasing solvent and give it a good shaking having plugged all the holes.

By the way can you see the images? I have embedded links to images in web folders hosted on Picasa.

I made the folders publicly visible but it doesn't seem to have made them visible to anyone not logged in to a Picasa account.

Stu.
 

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Yes, I can see them, Oogie. Actually, I clicked on one link and then was able to page thru all the photos that way.

regards,
Rob
 

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Discussion Starter · #14 ·
Thanks rob, when I opened the thread without having logged in to Picasa's web albums open I couldn't see links or pictures, so I thought it must be that way for everyone.

Still haven't fully figured out how to get pictures to be always visible in posts on here.
 

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bear in mind that you can filter the old paraffin and reuse it.

I have a paraffin wash gun and it's pretty good - connects to a compressor. Cover the tank with a cloth or risk a face full of blow back
 

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Still haven't fully figured out how to get pictures to be always visible in posts on here.
When posting or replying, open a second window to your photo album page.

In the reply dialog box that you are typing in, place the cursor where you want the photo, then switch to the photo album page.

Right click on your photo and select properties, then highlight the code at the bottom, or copy the code from the photo page's selection list; look for the simple one http://whatever..........jpg

Go back to your message input screen, click on the little icon that looks like a mountain with sun shining in a yellow sky and you'll get the image insert dialog screen.

Delete the "http://" that is there, and paste in your image code from the other screen (right click, paste).

Done.
 

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Discussion Starter · #17 ·
bear in mind that you can filter the old paraffin and reuse it.

I have a paraffin wash gun and it's pretty good - connects to a compressor. Cover the tank with a cloth or risk a face full of blow back
Sadly my facilities don't run to a compressor (lack of space) so I make do with an old roasting dish for washing parts in, with brushes. I have 2 containers one with fresh paraffin for final washing one with used that can be decanted and used again for more dirty stuff like chains, sprockets, frames etc.

It is suprising how little equipment you really need to do many jobs although a compressor, lathe and Pillar drill would make many jobs a lot easier.

Stu.
 

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Discussion Starter · #18 ·
When posting or replying, open a second window to your photo album page.

In the reply dialog box that you are typing in, place the cursor where you want the photo, then switch to the photo album page.

Right click on your photo and select properties, then highlight the code at the bottom, or copy the code from the photo page's selection list; look for the simple one http://whatever..........jpg

Go back to your message input screen, click on the little icon that looks like a mountain with sun shining in a yellow sky and you'll get the image insert dialog screen.

Delete the "http://" that is there, and paste in your image code from the other screen (right click, paste).

Done.
That's pretty much what I did, just weird I didn't see them until I had logged I to Picasa.

Today on my work PC they loaded up no problem.

Stu.
 

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Discussion Starter · #19 · (Edited)
I still seem to be making good progress, got the forks off last night, suprised to see the steering head bearings are caged balls not loose, made life a bit easier as they usually end up all over the floor! They look in good condition as do the cups etc.

Removed all of the wiring loom, looks too good to be the original so I'll reuse it.

Made a start stripping paint from the swingarm and some of the small frame brackets etc.

Also yesterday, ordered new swingarm spindle, bushes and shims, along with a few other small assorted items, tappet block o-rings, a couple of new cylinder studs, an new cylinder dowel, some new cylinder nuts, timing side crank oil seal (to replace the new one that I tore trying to fit due to slight burring on the inside of the casing). Hopefully they'll arrive today.

I'll add some pics later.
 

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Discussion Starter · #20 ·
Since last posting I've been busy with the frame parts, stripping, cleaning off rust, treating the cleaned parts with phosphoric acid and priming them with hammerite primer.

Hoped to finish priming today but didn't quite get there, the main frame loop is still in bare metal, treated so should be ok left for a day or two. Hope to get primer on it on Mon evening (weather permitting).

It's hard labour chemical stripping the paint and cleaning off the rust with a drill and wire brushes. Maybe I should have just sent the lot off for powdercoating :eek:

Also been cleaning up the nuts and bolts ready for when I get my plating setup together.
 

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