78 Moto Guzzi T3

Discussion in 'Some Assembly Required' started by flemsmith, Dec 23, 2012.

  1. flemsmith

    flemsmith lurk

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    seems worse than when I put in the new outer seal. It was so easy to do I'm a little perplexed that I could have made it worse than it was; right now I'm thinking I need to read up on how to take more apart and replace an inner seal I've never seen. Advice appreciated...like is there an obvious way to tell if it's the inner seal leaking? Clearly not the drain plug.

    Timing....I finally put my timing light on it, and was surprised to see that at idle it's pretty retarded, not sure just how much, but if I rev it up to about 2000, the middle timing line comes right into view, and if I go toward 4000 I can see the arrow, so the advance seems to be working, although I didn't realize it would start so soon. At least I know how to muck with the timing, (and surprise, it runs damn good at 2000), not so good at idle.

    On the positive side, I'm beginning to think I could enjoy riding this bike, it shifts great! (thanks, Charley); although I need more practice at downshifting with the throttle match. And I may want to spring for better shocks.

    I may be awhile getting to the rear end now, actually need to work on my travelling bike a bit, as soon as the weather cools some I want to ride to Missouri and visit my son. roy
  2. waylongway

    waylongway madmax

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    Hey Roy,

    Had the same problem w/ my rear drive. Greg told me to use some semi drying liquid gasket between the paper gaskets....I used a Yamalube 4,

    No more leak!! Just be careful not to break the little tabs off the bolt keepers.

    18 lbs on the bolts
  3. flemsmith

    flemsmith lurk

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    Haven't been inside the rear drive yet, but they look like they're awfully fragile. Guess they must have dried out while it was sitting waiting for all the other parts to come moseying in...here's a probably useless pic of how much oil I lost on a mebbe 8 mile ride just to warm it up.

    [​IMG]
  4. waylongway

    waylongway madmax

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    Mmmmm,

    Is the puddle from before the ride? That is a lot?? I have read of putting the paper gaskets in water to thicken them up, if you can get them out in one peace. but I had new ones. That seems like too much if you put in a new main seal ,to be the seal. At this point can't hurt to open it up and take a look :eek1... Just pops off, make sure you keep the arrows' lined up
  5. flemsmith

    flemsmith lurk

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    duh...what arrows? I'm thinking you're telling me to make sure I put the cover back on in the same exact orientation I take it off, right? I'll look for some bleeding arrows when I get it off. Probably wouldn't have thought of that without your reminder, thanks!

    roy
  6. flemsmith

    flemsmith lurk

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    I haven't pulled it out yet, but I must have either set it too low, or messed up the sealing surface. Will try again with a new seal.

    roy
  7. waylongway

    waylongway madmax

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    I guess that's a Good thing? Easy fix :clap
  8. flemsmith

    flemsmith lurk

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    Waylongway: That's beautiful work! Congratulations; if it rides half as good as it looks, you should be very proud.

    Thanks for the advice you've thrown my way.

    roy
  9. waylongway

    waylongway madmax

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    Thanks, Roy !

    Just got back from ride #2 ,all is good :clap This thing makes you feel like a real Bad Ass :pynd

    Besides running out of gas on (on) did not have enough gas ,needed to be on reserve .Then finding small gas leak at the petcock line :eek1

    Right now I'm scared to death of this thing! I can't wait till this dam show is over and I can breath again :puke1

    Best ,Eric
  10. flemsmith

    flemsmith lurk

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    ...to looking at the final drive leak that is. Was surprised to find this:

    [​IMG]

    All the other teeth look fine, but this one sucks. Don't suppose it would make a lot of sense to put it back together this way. Got a feeling this is a send out to someone who's used to setting up bevel drives. That'll set me back some..money and timing.

    Eric, enjoyed your description of riding your bike. I suspect you're feeling a lot more comfortable on it now. I decided to spring for a new set of rear shocks, mine was just a bit too rough to suit me. Anxious to see if that helps, now it looks like it'll be some time before that happens.

    roy
  11. waylongway

    waylongway madmax

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    Dam it! Ouch ! That sucks!

    Sorry to see that Roy :cry I guess it was good you did not go to far!

    I found this for you: You could swap parts, not sure about the gearing ?
    http://www.ebay.com/itm/Moto-Guzzi-...Parts_Accessories&hash=item1e7f3809a0&vxp=mtr
    And this rebuild link I had: :huh
    http://livinginthepast-audioweb.co.uk/index.php?p=finaldrive

    Scroll down to #30 You could do it, A new pinion and gear cost 450$ that's just the parts..Or you could send it off to Cycle garden http://cyclegarden.com/ or http://www.zydecoracing.com/about.html
    Let me know what you decide?

    On a better note ,Every body at the Tooele GP liked the bike..
    Best Moto Guzzi :clap And best Japanese restored for my wife's bike

    Eric

    [​IMG]
    [​IMG]
    [​IMG]
  12. flemsmith

    flemsmith lurk

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    Two bests in respective categories!! That's a home run!

    I'll look my way thru that reference, thanks. Seems a bit daunting, but who knows, I may give it a try.

    roy
  13. flemsmith

    flemsmith lurk

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    I bought it! Will do some studying up on what it's gonna take to get it all together happily, although I have a road trip planned for about when it will probably get here, so I'll be back to delay mode, as usual. Wildguzzi tells me the ratios are the same, hope everything else is an easy swap too.

    I really oughta be trying to build two bikes at once, that way I can always have something to work on while waiting for parts for the other bike....yeah, right!! Just what I need, more parts scattered around the garage.

    roy
  14. waylongway

    waylongway madmax

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    That's Great!!
    I thought that was a good deal! I think 1/2 my bike is E-bay :rofl Should be able to slip that right in there, as my high school motorcycle repair teacher says " Its just parts"



    I really oughta be trying to build two bikes at once, that way I can always have something to work on while waiting for parts for the other bike....yeah, right!! Just what I need, more parts scattered around the garage.

    roy
    Sounds like heaven :clap
    I have 4 bikes to work on, but I look for more every day :lol3
    Eric
  15. flemsmith

    flemsmith lurk

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    OK, got the El Dorado rear drive bevel gear donor just before I was set to leave for a road trip to Missouri to visit my son. Had a great trip, all except for some trouble with my 1200GS cruise control after a couple days heavy rain. Came back and took the El Do rear drive apart today. All the gears and carriers are a direct bolt-on. I can see now that the seal I installed was too deep, and locked up the big ball bearing, so that's why it started leaking right away worse than the old seal did.

    I'll spend some time studying the shim set-up, and with luck I'll be back with a bit more of the debug status in my normal relaxed timing....speaking of timing... I don't think I ever had the timing just right, it didn't want to idle very well at all. There's some slop in the distributor, do I assume I want to set the timing with the slop taken up CCW or CW?

    roy in Az
  16. waylongway

    waylongway madmax

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    Hey Roy,

    Good deal on the trip and the rear drive!

    CW would be the right way w/pistons at TDC , Like I said pull and ground the plugs (vise grip) and listen for the spark while looking at the marks on the distributor to lining up..but I suspect it is a carb problem more than a timing thing?

    Do you have the air screw out 1 1/2 turn? .

    Are the slides at the same height?

    Dose it change if you pull the choke ,better ,worse?

    Having troubles of my own :cry. The charging is not working on my bike and sucking the battery dry... trying to figure it out?

    Its always something !!

    Off to Oregon today, my wife wants to sit on the new 700 gs
    .Great #*&%#*$$?

    Eric
  17. flemsmith

    flemsmith lurk

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    It's always some little thing that gets me hung up, at which time I usually walk off, think, and ask ques of folks mechanically smarter than me....

    I'm installing the Eldorado gear set in the T3 housing, looks like it will all fit ok, but everything I've read says I'll be shimming and reassembling for some time to get the mesh set properly....thought I'd start with the El Do pinion gear assy as is, which will need to wait awhile anyway as I've ordered a new carrier shim to replace the one that's hidden in my garage someplace...so meanwhile I thought I'd disassemble the broken T3 pinion assy to make use of the shims, and to get prepared to take the good one apart when I need to change out its shims..

    [​IMG]

    So how do you hold the damn pinion gear so you can put some major CCW force on the big nut? I've tried using the spline coupler with a pipe wrench, that will quickly get me to replace the scored all to hell coupler, but I still couldn't hold it stationary. There must be a smart way to do this.....? appreciate any inputs. roy
  18. waylongway

    waylongway madmax

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    You are going to need a spline wrench.(not that I have done this)
    But what I have seen is to use a donor coupler, I have one if you need it.

    And make a wrench out of it that will hold the spline. Like against the vice while you try to get the nut off, A little heat would help.

    Or you could make a wrench to go around your coupler and tack it good enough to hold but so you can cut ,grind it back off and reuse yours . Should be fine?

    Eric
  19. Greg Bender

    Greg Bender Long timer

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    I took an old trashed u-joint and disassembled it. I clamp one of the splined ends very securely in my bench vice. The pinion fits perfectly into it. Using a large box end wrench, I am able to loosen and tighten as needed.

    I do not have a good way of imparting accurate torque...though I suppose that could be done by modifying the universal joint piece that I use to accept a 1/2" drive torque wrench.

    In setting up the shimming, you'll be tightening and loosening this nut a bunch of times. You have to find a good way to do it.

    Regards,

    Gregory Bender
  20. flemsmith

    flemsmith lurk

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    OK, I sacrificed my coupler, had a handle welded onto it, ordered another, and proceeded to learn about shimming. Six disassemblies and two shim orders later, I think I have it as good as I can get it...spoken with my usual self confidence when I do something new and probably critical. Tried a few things as mesh indicators, finally bought some Prussian Blue from Amazon, that worked best by far.

    So now the rear is back together with the new old El Dorado bevel gear set in the T3 housing. And it's back to setting timing (which seems kinda fiddly with the Dyna rotor set screws....and the carb's....the more I think about it, you're probably right, Eric; I must have something wrong in the carbs, it never has wanted to idle, although it rev's fine. The easiest fix would be if I had the slides inserted the wrong way. I need to double check that; thought I did once, but mebbe I screwed it up.

    Meanwhile, I finally bought an airhead. I'm telling myself I can't start messing with it until I'm either finished and happy with the Guzzi, or waiting on parts for it. It's an 85 R80RT with 101K miles, so it's pretty experienced. It's a monoshock, dual front disks, electronic ignition, so I'm thinking it should be a pretty decent bike with some work.

    [​IMG]

    Never have liked the RT fairing, (makes it feel like you're driving a bus as much as riding a bike...IMHO) so when I feel good about the Guzzi, the first thing I need to do is understand what all I have to buy in order to get rid of the big fairing and get more like a naked bike, and although that will be another story, I'd be happy to take some direction.....headlamp housing and ears, front turn signals, mirrors?