3XV De-Restriction Options Database

[ash33]

Pretty sure it's a heat shield for the air boxes. Can't say I've actually seen one but that would be my first guess.

[ktzr]

Thanks Ash.

[paul 114]

hi everyone ,new to this site.i just bought a tzr3xv and love it BUTjust not there.so does pips and tune do the trick to 60bhp and if so wich ones and who and how much? thanks.ive had lots of vpvs lc rg rgv and they never needed a   new brain,i also have a 91 tz b and was wondering what swaps easy .sorry i jumped in here but its a great point.

[ash33]

Hey Paul and welcome,

You can swap almost all engine parts except the crank from the TZ250B without major work. The obvious parts are cylinders and pipes you will need to find a suitable CDI too.
Unlike most other 2T road bikes of the era the 3XV is heavily restricted with many little bits that need to be changed.

Ash.

[Warwick]

All the Japanese domestic market 250 race reps from '89 on were restricted, Ash. The post 93 ones are even worse, being capped at just 40 ponies...

If it's an R model, then SP spec porting and some good pipes will see you to high 50s with the stock 91/2 -00 CDi (I've not tested with later CDis so can't comment on those). It'll probably feel a bit peaky though compared to using a Sugo CDi.   

[ash33]

All the Japanese domestic market 250 race reps from '89 on were restricted, Ash. The post 93 ones are even worse, being capped at just 40 ponies...  

Don't get me wrong the 3XV is easy enough it just has a few more restrictions in the R & RS models than other bikes.

[paul 114]

two men i was looking for,just bought both bikes an 92 tzr  is first but cant kill a bike if you no what i mean but would like the tune and pips thinking about swarbics 400 ish who for the tune ,i am in belfast soprob. someone in england ps will tz ignetion do instead of that sugo one.thanks lads

[ash33]

A search of the forum will reveal you need to more than just plug it in, I'm not 100% on the specifics as I've never done it.

You can find tuners in the Vendors section HERE

James H from Krazy Kat has done a fair bit of work on the 3XV as well.

[paul 114]

thanks and if anyone is looking rid of that box givis a shout lol 

[ash33]

thanks and if anyone is looking rid of that box givis a shout lol 

If your planning on using guillotine power valve type cylinders you can use a 3xv-9A or 3xv- 75 CDI both are RC Sugo boxes.
I saw 1 of each and a 3xv-CO box on yahoo Japan not too long ago.

[paul 114]

no cant raid the tz yet as she is a good runner and i might do a few track days but the sp tune pipes and then box and carbs ,i am on the hunt now but that yahoo place looks a bit mad.

[Martin77]

Paul.... I'm happy to do some port work for you, I'll PM you some details in a minute.

Whilst I very occasionally make pipes, the difficulties involved means your best option would be to get a set of Jim Lomas pipes (available from fondseca amongst others http://www.fondseca.com/index.php?main_page=product_info&cPath=134&products_id=575)

These along with my mid tune would get you pretty close to 60hp. The sugo cdi would then give you a better/bigger power spread and with the full SP port spec would get you up to around 63+hp.

[paul 114]

thanks martin for the pm,will give you a shout after xmass .

[josh]

Ok, I'm all for the info sharing.

Here's my info.

I hope others will copy, paste, and fill in their info too
As little or as much as you guys can offer.  It all helps.....


Item.             
Model  1992 TZR250 3XV4.
                                     
Exhaust.             
Expansion Chambers.  Standard.                 
Muffler.  MFactoryWest.com 250mm carbon/kevlar.
                                           
Engine.               
Cylinder Heads.  Standard 3XV01                 
Cylinder Barrell.  Standard 3XV00                 
Pistons.  Standard.               
Porting.  Standard.               
Power Valve.  Standard.                 
Reeds.  Standard.                 
Crank.  Standard.
               
Ignition.               
CDI.  3XV-00.  (1991 3XV1)             
Spark Plugs.  BR9EG.               

Fuel & Air.               
Air Filter.  Standard.
               
Carburettor.  3XV120 T217             
Jetting.
 
Left/Upper Carb.
Main.  190
Pilot.  12.5
Nozzle.  P-4
Needle.  5FN117 #2
Power Jet.  60
Seat.  2.8
Slide.  0
Air Screw.  1.75T
Float Height.  16MM

Right/lower Carb.
Main.  270
Pilot.  12.5
Nozzle.  P-6
Needle.  5FN117 #2
Power Jet.  None
Seat.  2.8
Slide.  0
Air Screw.  1.75T
Float Height.  16MM
             
Miscellaneous.               
Speedometer.  M-Max box plugged into speedo.
3XV2 SP Swingarm, Shock, Triple Clamps, Forks.             
1994 TZ250 brake calipers.

Fuel.  91 Pump Gas.

Expected Power Output.  45 HP.

[ndwedwe]

It's a pity no-one else took the time to contribute to this thread, a potential wealth of knowledge slipped by?