81' Special re-hab

[TopCatGr58]

Hey Skids,

Okay, did a little research. The original ACCT that Ivan found I think was the VISION, but then Steve also figured out the Vmax/Venture/Royal Star, and then later the V-Star and some Viragos also fit with minimal Mod.
His Tech tip says that he found 3 different ACCT part #'s that HE says Fit?

Here's the Yamaha part # for the 83 XZ550 Vision

11H-12210-02-00

Here's the part # for the '83 Venture, I don't know what year/model he/Steve used for his comparison, but I know that the early model Ventures/Vmax's used the same oil filter cup as the XS11's.
26H-12210-03-00

Then Steve also added a large list of V-stars and Viragos that used the same part #:

26H-12210-03-00 Same as the Venture

The 90 Virago 535 is: 11H-12210-02-00 same as the Vision.
The 90 V-max: 26H-12210-03-00

Then he also added another listing of Raptors, Grizzlys, Rhinos, XT600s and here's the part number:

3TB-12210-00-00

Another member Codylane had found the Raptor unit to work, again may have required some slight modding of the mounting holes. But that's why Steve included that 3rd part # and the listing of that class of engines that would fit.

SO....I don't know if you saw his notes about having to mod the mounting holes to allow the ACCT to fit, also different length bolts may be required.

SO...would the XT600 ACCT fit into the opening but that the case holes didn't line up, or was it totally way out of wack/fit/alignment???

T.C.

[skids]

I think the mounting holes may have been workable with modification. The problem was with the range of the plunger. I would have tried it if the min/max (especially the max) of its range encompassed that of the stock CTT, but it did not. I compared it with a caliper and it was not sufficient. I no longer have the measurements...

[motoman]

To better clarify the cam chain self adjuster choice, if possible get ANY yr. Venture adjuster(2). These are the perfect match 'plug'n'play' self adjuster. Since the Venture has one on each pair of cyls., get both as they are the same. That way, you'll have an extra if ever needed. Oherwise, the one on outer two cyl. is easiest access. One on rear two cyl. is a pain since the whole air filter assembly has to be removed in order to access that self-adjuster. Also, and likely very important is keep the retainer bolts with the Venture self- adjuster. The housing mount locations are a bit taller, and the bit taller mount locations require the longer Venture mount bolts.

[skids]

Brant, does that Ventur’s ACTT give more extension to the plunger? I am interested in more of a range, possibly extending the life of the cam chain. I replaced a chain once and was disappointed in where the stopper bolt ended-up. So, did you compare the range of the plunger with the stock tensioner with a caliper? Did you have to modify the holes at all, or was it plug-n-play?

[DiverRay]

It's plug and play EXCEPT for the mount bolts. The housing is thicker than the XS, so the bolts need to be about 5-8mm longer. I've used both the Ventur and the 550 vision, and the ventur is easier.

[skids]

Did you have to modify the holes at all, or was it plug-n-play?

My mistake Brant, you DID say it was plug-n-play.

[skids]

It's plug and play EXCEPT for the mount bolts. The housing is thicker than the XS, so the bolts need to be about 5-8mm longer. I've used both the Ventur and the 550 vision, and the ventur is easier.

Ray, do you know if the range of the plunger of the Vision’s is any longer than stock?

[DiverRay]

IIRC the vision is close to stock, maybe just a tad longer.

[motoman]

Brant, does that Ventur’s ACTT give more extension to the plunger? I am interested in more of a range, possibly extending the life of the cam chain. I replaced a chain once and was disappointed in where the stopper bolt ended-up. So, did you compare the range of the plunger with the stock tensioner with a caliper? Did you have to modify the holes at all, or was it plug-n-play?

Yes, fully extended, the Venture adjuster is just a tad longer than the stock one fully extended. Don't remember how much longer, but it was marginal enough so as not to push that chain to far back. As for mounting holes, they line up perfectly inline, so no filing having to elonggate either hole in Venture adjuster. Spring tension on Venture adjuster pretty much matches that of stock adjuster, so in all, 'plug'n'play. Just have to use the longer Venture mounting bolts.

[SNDSLGR]

Nothing photo worthy to report. Used my days off to get Carbs clean, what a mess those things where. Ive worked on / tuned probably about 200 carbs in my life, never seen anything as messed up as these where.

Broke a float post for my first time ever. Dropped it off at my buddies place, he is an expert welder and is going to give it a go.

Brake caliper and master cylinder rebuild is all done and put back on bike, all seems good.

Ordered a ACCT from a venture off Ebay. Ordered jets, filters, float needles etc from mikesXS so that's all in the mail.

Cleaned/gapped plugs and gave cylinders a second dose of MMO. Hoping to try and fire it off about a week from now.

[SNDSLGR]

Getting close to hitting the starter button. Cleaned up some electrical connections, put a gallon of fuel in the tank and happy to report petcocks are tight and dry. Replaced the fuse panel I broke (just as TC predicted), new intake boots on. Checked fluid levels on engine, mid and final drive. Just waiting on the UPS man with my filters and jets.

Carbs where unreal.






Looking good now

[SNDSLGR]

[SNDSLGR]

It fired right up! Ran around the neighborhood a bit to get thru the gears and get a feel for the jetting. Low end needs a little work.

New tires and brakes lines before I really lay into it... They are in pretty bad shape.

[SNDSLGR]

Could use a little help fellas.

*some current specs real quick.
Stock coils
Stock exhaust
mikesxs oval pod filters
stock needle
stock air jet
pilot 45
main 117.5
fuel screw out 4 turns

Coils
1/4 primary 2.4 (spec 2.5)
2/3 primary 2.5

1/4 secondary 11.15 (spec 11)
2/3 secondary 11.22

Plug caps
1, 9.79, ordered new
2, 5.72, replaced with new 5 ohm
3, 5.53, replaced with new 5 ohm
4, 8.79, ordered new

*Bike starts and idles great, I have done a carb sync (even hooked it up once after I started having trouble to be sure... all good)

The other day when I first started the bike it ran decent but bogging/surging pretty bad at 3 turns and got worse as it warmed up, came out to 3.5 and still doing it but slightly better.

Next morning I took the coils out and checked them, all within spec. Replaced the two inner plug caps and fired it up. Much better but still not quite right so I turned the fuel screws out to 4 and it ran great.

This morning I warmed it up then rode to the store about 3 miles. I was so happy, thought I had it nailed!! Riding back from store it started acting up on the low end again. Got home and moved the fuel screw out another half turn with no effect. (not surprised.. dont know the exact number of turns before its dead open but gotta be close at 4.5?)

Im going to try 1 size up on the pilot jet.

So to my question...

1) Im feeling like my coil/wires may have a crack and reading well at room temp but giving me trouble when they get hot, sound reasonable?

2) Ive read much as I can on here but having trouble being sure which Accel coil kit to get... much of the posts here are very old (is info still relevant to todays market/availability) and almost all of them deal with the earlier models. This is a 81' with different specs than most. Book says 2.5 ohm primary and 11 ohm secondary. From what I can gather Accel is the way to go? And the Accel #140403 is the right coils, anyone have input on that?

Plugs are reading a tad lean, not bad but a tad. I cannot do anything with the top end yet (although I feel its close as it pulls very hard to 50 mph), the 25 year old tires and spongy breaks need to be addressed before any high speed passes.

Thanks for reading.

[skids]

I know that bad coils can show drastically increased ohms when hot. plug caps can go bed as well. It is relatively easy to test plugs and caps at the same time...just pull them off the plugs and test Kohms on the pairs. It won't tell you if the problem is with the cap(s) or the coil, but it will indicate if there is a problem. What it might not indicate is if you had voltage escaping out of a spark wire, moving it for the test might show it to be good. You might be able to see arcing in the dark if the wire is bad.