Special Tools required???

[jfmerk]

So as a near the point of putting my engine back together ('78 standard) and by that I mean in about another month or so... can someone tell me what are the "must have" Yamaha or home-made tools required to re-assemble the engine and install it into the frame? If any?

Now when I took it apart, 3 1/2 years ago , I needed no special tools but I'm sure going back together is a whole different story. The "tappet adjustment tool" looks like a must have.

I have the measurement tools, valve spring compressor, piston ring compressor... some of those basic engine tools, just wonderding about the "special tools" I may need to acquire.

Thanks for the help!

[digitalsam]

I rebuilt the engine without any special tools. I never got the flywheel off, but didn't need to because the seals were still good. Couldn't find a bolt that would fit like the tool the manual calls for.

[latexeses]

From all I have read, a couple fifths of bourbon wouldn't hurt.

[trbig]

A good T-30 torx bit and a 27mm socket for the clutch basket nut. Oh.. and some decent snap ring pliars. Just normal metric stuff besides that.

Oh.. and take that tappet tool and throw it in the trash.. Before installation, get 4 of the thinnest shims you can get (230-235 range) put them in the shim buckets.. one side at a time... either exhaust or intake and put that cam on and torque the cam caps. Spin the crank with a wrench or good channel locks at the spot provided on them and check your measurements. Pull that crank back off and do the other side. Don't put both cams on at once until engine installation.


Tod

[TADracer]

Only special tool I ever used besides the normal stuff like trbig said, is a piece of wooden dowell about 8" long and 1/2" or so in diameter. Used the flat end to push the piston pins out of the pistons. Then I shaped one end with a knife to help install the circlips back into the pistin pin bores after pushing the piston pins back in. Then I drilled a hole in the other end and used it as a tool to seat the valve seals onto the valve guides in the head. By then it was pretty well worn out so it went in the trash.

But here is another simple tool that can come in handy to remove that pesky carbon buildup in the combustion chamber. Take a piece of 1/2" or 5/8" diameter soft aluminum bar (12" is more than enough) and clamp it in a vise. Then use a hammer to mushroom one end slightly. Use the mushroomed end as a scraper and the angle is perfect to dislodge baked on carbon. You can scrape all the carbon out without worry of scratching the inside of the combustion chamber or damaging the valve seats. Works like a charm.