[Gas Gas Tx 270 Cutting Out Problem]

Have had really good luck running NGK Iridium plug NGKBPR5EIX-11, my experience

with personal GG very positive with this plug.

Larry

[Txt 270 Or 280?]

Sean, located this today on You Tube;

  GASGAS Trial engine oil clutch- transmission

Pretty good info from Gas Gas USA

Good luck

Larry

[Bultaco M80 Fork Bottom Removal.]

Cosmo, Unless there has been a long 6m screw turned in against the damper they

should only be stuck to the bottom of the slider with accumulated gunk or corrosion.

 

Damper assembly

 

 

the damper is secured in leg by a circlip, the slider comes off

after the bottom 8m allen head is removed.

Be sure to replace the O-Ring seal.

 

Larry

 

[Txt 270 Or 280?]

Sean , I have never heard that before, my 2001 is certainly an Edition version (Pre 2002 Pro).

To each his own.

Larry

[Weird Engine Noise]

Hario, might think about laying her down on the LH side and using a (mine are 3/8 drive) allen

sockets & a hand impact wrench (if they have not been removed lately) they are very tight and soft. 

6 bolts & you can have all the plates for examination, be sure to note position of pressure plate to

clutch hub.

Good luck

Larry

[Txt 270 Or 280?]

Sean; for what its worth, my own bikes Dexron ATF.

Larry

[What Did You Do To Your Bultaco Today?]

Robbie, I don't think so, not into alloy welding, can barely do anything correctly the

first time any more, just keep messing about.

 

Larry

[Bultaco M106 Ice Racer]

Chris, PM sent.

[Bultaco M106 Ice Racer]

Per Graham (O-Ring), when you say "poor compression" this is hard to understand with a fresh 325,

cant tell from the photos whether the primary side seal retainer holds 1 or 2 seals (1 spring to crank/ 1 to clutch side),

the next thing is a pressure test , you would think the thing would a least fire with a little fuel down the spark plug hole.

I believe I can find a photo of Saw Millers pressure set up.

Good luck

 

Larry

[Txt 270 Or 280?]

Sean, Have at the present time a 2001 TXT 280  ( 10 years) same engine as yours,great reliability,

was a little to quick for me , went to a 10 tooth sprocket which made it better.

I hope your oil is not milky (coolant) which is not conducive to good clutch operation.

Does the bike jump when cold and gears are engaged?

 

Larry

 

[Any Ideas What's Going On]

It sounds like maybe the new carb is not getting much fuel (float valve)?

Not familiar with tickler & a choke,  do you see fuel coming out of the weep hole when 

the tickler is held down? If so then cover the hole with your thumb to get fuel in the proper place.

My experience with Amal concentric's ; you must be careful when tightening the top as it 

is easy to warp things and then the slide hangs up.

Be careful with your fresh rebuild.

Larry

 

[What Did You Do To Your Bultaco Today?]

Doesn't seem to be much going on in our Bultaco community,so we will tear a mid muffler

up and put it back together.

 

Spot welded? My first ever, also welded to perforated tube?

[

now to get it packed and back together

[

all brazed up

 

All done

Have a good day

Larry

[Any Ideas What's Going On]

Don't pretend to know anything about Greeves; that said its still a 2 stroke.

With all  the good work you have done it would appear the new carb is a

piece; if as you say it's "wooly" off the bottom I suppose its rich/lean?

I am not a fan of Amals as I have no luck and no patience some folks have

good luck however.

 

Best of luck

Larry

[Bultaco Suspension]

Dan , was working on a Sherpa T fork leg today and saw your post, so I took a damper out so

you could see what all was there.

Just finished up the front end on a M199a, 180cc Dexron, (no topping out/clunking) period.

 

Hope this helps.

[What Did You Do To Your Bultaco Today?]

Good photos, glad you figured things out.
Your bike has some interesting features that make it better in my eyes; M159 style air box , LH brake pedal,

original style tank, early SM rear brace on front fender, (I should have done this) prevents bashing M199 brace

into down tube. Very nice machine.

Larry

[What Did You Do To Your Bultaco Today?]

The main difference between 199, and 199a I believe is , the 199a has 3 main bearings, 199 has 2.

The LH case with bottom drain is common to earlier m159 and forward  and the problem would only

be clearance on the skid plate used on 199a bikes.

There would be no mechanical problem encountered with the earlier LH case.

Hope this helps

Larry

 

 

[What Did You Do To Your Bultaco Today?]

Well guys the saga of the Blue Bultaco continues, on to fork seals, started out OK but then became

complicated; sticky/stuck rather badly

its the RH

here we go

got to fix this or junk it

all better now

I'll finish up the rest of the story later.

Larry

 

 

 

 

 

[What Did You Do To Your Bultaco Today?]

Yesterday trying to get myself going after several hours Friday helping my good friend to sort out

the kicker on a MAR & chain tensioner/brake cross shaft repair, back on the 199a project.

 

Not much but safety wire clutch and refit case, 300cc Dexron , change tank bolt configuration.

 

stock tank bolt

 

 

maybe cleaner

 

 

 

 

 

[What Did You Do To Your Bultaco Today?]

Well maybe not much going on out there??

Made a little progress since last time, not a whole lot for most, but for me

enough sitting on rolling seat to do me, and also stopped to help out a

friend and do some machine work yesterday

.

Add a condenser

 

Up  on the lift for a little clutch work

 

 

Now we can get it to where its easier to work on.

Larry

[Date My Cota]

SM offers a universal tensioner similar to the one shown, would require a tab to be welded to

swing arm cross member.

Larry

[What Did You Do To Your Bultaco Today?]

Yes I did use a product that is available here but maybe not where you are, I have a friend who

uses Caswell, to good end.

The whole thing depends on how clean you get the tank prior to lining that makes the job good or not.

I do not use any Ethanol, however modern fuel, and polyester resin, NOT GOOD!!!

 

But back to my Blue girl---

 On the way to turn on the air 9:00 am (east; right in the sun)

Little later in cool shop

More later as I'm old and slow

Larry

PS That head steady don't look right??

 

[Mar Mkii]

Just a note to any use of after market dished sprocket; I hope you have a machinist handy.

[What Did You Do To Your Bultaco Today?]

It is quite an adventure to open a tank , and it also takes a certain amount of nerve,  also kind of scary. 

I have done so on more occasions than I wanted to, but such is life with old machinery.

By the way the chain guard looks really good, I have always wimped out & paid for the SM, good work.

Mod 49 tank

 

putting back can be a bother!!

Naturally this was a painted tank that I messed  up the first go around

All good now

Hope this helps

Larry

[What Did You Do To Your Bultaco Today?]

Hello folks, 94 degrees, 50+%humidity. Summer in Oklahoma after all the recent flooding

rains, now hot & humid.

Now this little fellow wanders into the shop today thinking why don't we do some maintenance;

fork seals, wheel bearings, timing check, and whatever else we might need done and to

get old folks off his butt.

More to follow as time allows.

Larry

 

[Help For A Newbie!]

Rob, mod 80 Bultaco has a counter bored head and a raised liner and does

not require a gasket or sealer, if the head continues to seep, it will have

to be machined or replaced.

Seepage is dirty not life threating.

Larry