TU250

[CMS]

Since I started here with a GZ, and now have a new TU250X,are TU250's going to be included in this fourm? Basicly its the same bike. The XT225 Forum became XT225/XT250 with the intro of the newer XT250. I think it would work ok, with info on both bikes. CMS

[bonehead]

How does the TU250 compare with the GZ as far as performance?

[Easy Rider]

are TU250's going to be included in this fourm? Basicly its the same bike.

I think that's a fine idea, but.......I can't quite agree that it is "basically the same bike".
I doubt anyone would ever mistake one for the other, appearance wise. IMHO, the TU looks more like a dirt bike or dual-purpose and certainly is more of a "standard" than a cruiser.
They both ARE made by Suzuki and both have an engine that is about 250 cc's. :cool:

[patrick_777]

I've seriously considered adding a TU forum. If we can somehow get our hands on a digitized version of the Owner's and Service Manuals, that'd be awesome.

[burkbuilds]

I say welcome aboard, not everyone here drives a GZ 250 and some of us did and now don't but we are still here because this is a great forum and we like it and each other (although sometimes it might not appear that way to someone who just started reading). If Patrick adds a TU forum that's great and if he doesn't I hope it won't deter you from hanging around!

[Easy Rider]

I've seriously considered adding a TU forum.

An even BETTER idea !!
You are showing some promise lately. :crackup

[gripped]

:poke2: :poke2: :poke2: :2tup:
http://img21.imageshack.us/img21/9075/65406921.jpg (http://www.postimage.org/)

[dhgeyer]

The TU250 has the same engine bottom as the GZ250, and the same gearbox, clutch, etc. The cylinder is different, it has 2 valves instead of 4, and is fuel injected (closed loop with catalytic converter) instead of carburated. The frame is different, but if you start looking closely, you'll see a lot of common components. Power output and speed are close to the same. It is indeed a standard, not a cruiser.

It got a fantastic writeup in Motorcycle Consumer News. They said it could hold its own in the twisties against bikes with much larger displacements, just because it handles so well. They said the power delivery is very even and smooth due to the well executed fuel injection system. I looked at one at a local dealership. Beautiful looking thing. Looks a lot like some of the classic British singles from the good ole' days. Oh, do I want one!

[Adamastor]

If the TU is included, we could also include the GN250 :) Same engine and transmition :)

[music man]

Hey Gripped, you have a home here, if you really think about it, any problem you have on your bike that is not fuel injection related we are instantly gonna be able to relate to our problems on the GZ. Because the GZ and the TU are so much alike it is ridiculous, and the GN250 is the same way, so welcome to the Group with your oddball GZ250's that you own.

[gripped]

Music man - thanks for accepting me and my oddball gz :retard:

I figured after reading a bit on the forum that the similarities are pretty ridiculous...I'm just better lookin' :neener: :biggrin:

I've learned a lot from the forum :rawk:

[VTXorcist]

Ooh yeah I saw one of those at the dealership the other day. Very retro-cool!

[alanmcorcoran]

I wish the GZ had the fuel injection. The carb/choke/idle seems to be a common source of sporadic irritation on an otherwise cleanly engineered entry level bike. I'm curious how the lower profile front wheel would deal with California Concrete at 70 mph.

[gripped]

at 70 the bike vibrates a bit. but to understand this you have to know Seattle roads...they suck! i've had it pretty fast on 'normal' roads and they ride well. i would like to upgrade to a wider tire maybe when these wear out.

[tu250x]

Do you think a classic gz250 windshield would fit on my suzuki tu250 i saw a pic online that looked like it had one on it what about other accesories (saddlebags, lightvisor, etc. etc.)?

[jonathan180iq]

The GZ windshield, from what I remember, is basically just a universal shield. Most of the "Suzuki" branded stuff for the GZ is just adapted universal stuff, except for the saddle bag brackets.

The windshield should fit, as long as your bike has exposed handlebars.

[Sarris]

The only problem is the Suzuki windshield is a small expensive piece of shit.

There are a lot better made and cheaper windshields available. Search the site. We've beaten this horse before.

:horse:

[jonathan180iq]

I love beating horses.

[dka67x]

New poster here. Not a GZ250 owner but a new TU250 owner. I bought the TU250 to turn it into a cafe racer. Below are pics of my little TU cafe racer. I know it will never be a true racer but I love the look of the bike. I hope you all like it as well.

Thanks

http://img34.imageshack.us/img34/463/15827276.th.jpg (http://www.postimage.org/image.php?v=gx1q4e00)

http://img34.imageshack.us/img34/2268/19789875.th.jpg (http://www.postimage.org/image.php?v=gx1q4gv9)

http://img34.imageshack.us/img34/7071/92583829.th.jpg (http://www.postimage.org/image.php?v=gx1q4i_i)

http://img34.imageshack.us/img34/9946/34783029.th.jpg (http://www.postimage.org/image.php?v=gx1q4nZA)

http://img34.imageshack.us/img34/4737/21851611.th.jpg (http://www.postimage.org/image.php?v=gx1q4qtJ)

[New GZ250]

You couldn't of done a better job!
:2tup:

[alantf]

I wish the GZ had the fuel injection. The carb/choke/idle seems to be a common source of sporadic irritation on an otherwise cleanly engineered entry level bike.

O.k. ......... I'm no engineer -but - (leaving the cost aside for the moment) would it be possible to buy & fit the injector system of the TU250 to the GZ? If it were possible, do you reckon that it would make any noticable difference to the performance? Like I said elsewhere, the GZ fits my needs perfectly, so if fitting the FI was possible, & made a difference to top speed, I'd sooner go for this than change the bike. :jo:

[jonathan180iq]

Someone needs to get a hold of the TU250 service manual and cross reference the differences, if any, that exist between the basics of these engines. If they are indeed the same, then you should be able to shoehorn in the electronics of the injection system. I mean, if we are dealing with a straight engine clone, I don't see why it wouldn't be possible.

Someone just needs to do it...

[bonehead]

Someone needs to get a hold of the TU250 service manual and cross reference the differences, if any, that exist between the basics of these engines. If they are indeed the same, then you should be able to shoehorn in the electronics of the injection system. I mean, if we are dealing with a straight engine clone, I don't see why it wouldn't be possible.

Someone just needs to do it...
TAG, you're it.

[dhgeyer]

For starters the TU has only 2 valves, whereas the GZ has 4. The cylinders look quite a bit different. The tank is different, and the TU has no fuel shut off valve, since it has a fuel pump instead. I suppose you could just rig a line to the fuel pump from the the valve on the GZ and leave it on PRIME all the time. So, at a minimum you would need to buy the fuel pump, the throttle body with injector and TPS (throttle position sensor), and an ECU (electronic control unit). You would have to hope that the connections from the TU's throttle body is consistent with the ones on the GZ's carburator, going to the engine and the airbox, and that the new components would fit in the shorter GZ frame. And, along with the different valve setup and different airbox and filter, you would have to hope the ECU would be able to function at all in the different environment. Might need a different throttle cable. The TU has a catalytic converter, and is a closed loop EFI system, complete with an O2 sensor. The EFI probably wouldn't work properly without the input from the O2 sensor, so you'd have to somehow rig a TU exhaust system to the GZ, or else rig up some electronics to mimic the input from the O2 sensor. People actually have done this to some of the early oilhead Beemers because some of them ran very badly from the factory, and it was discovered that taking the real O2 sensor out of the loop and mimicing its input solved the problem. Way over my head electronically. If you tried to rig a TU exhaust to the GZ you would need to deal with the fact that the GZ has a 2 into 1 system, whereas the TU has a single pipe from the head, and it's a larger diameter. Then you would have to hope that the ignition control in the TU's ECU would properly control the ignition on the GZ, with correct timing and so forth. Probably wind up needing a TU ignition setup right out to the spark plug wire.

When all is said and done, I think it would be easier to just buy a TU250. I'm pretty sure there is one in my (hopefully) not too distant future. I'd trade up tomorrow, but I have this problem. My daughter, who rides, has fallen totally in love with the GZ. I bring up the TU once in a while, but she insists that she's "not ready to break up" with the GZ yet. Like it's a friggin boyfriend or something! Anyway, I can't break her heart, so the GZ stays for a while. Can't see the TU and the GZ along with 2 other bikes, so I'm stuck for now. Damn!

[gripped]

New poster here. Not a GZ250 owner but a new TU250 owner. I bought the TU250 to turn it into a cafe racer. Below are pics of my little TU cafe racer. I know it will never be a true racer but I love the look of the bike. I hope you all like it as well.

Thanks

http://img34.imageshack.us/img34/463/15827276.th.jpg (http://www.postimage.org/image.php?v=gx1q4e00)

http://img34.imageshack.us/img34/2268/19789875.th.jpg (http://www.postimage.org/image.php?v=gx1q4gv9)

http://img34.imageshack.us/img34/7071/92583829.th.jpg (http://www.postimage.org/image.php?v=gx1q4i_i)

http://img34.imageshack.us/img34/9946/34783029.th.jpg (http://www.postimage.org/image.php?v=gx1q4nZA)

http://img34.imageshack.us/img34/4737/21851611.th.jpg (http://www.postimage.org/image.php?v=gx1q4qtJ)
:2tup: :2tup: :rawk: :rawk: YEAH! You beat me to it!!!

[jonathan180iq]

Someone needs to get a hold of the TU250 service manual and cross reference the differences, if any, that exist between the basics of these engines. If they are indeed the same, then you should be able to shoehorn in the electronics of the injection system. I mean, if we are dealing with a straight engine clone, I don't see why it wouldn't be possible.

Someone just needs to do it...
TAG, you're it.

I may have once been that guy.

I'm no longer that guy.

[bonehead]

Ya, I' done with the mods. When I need it to go faster I'm just going to remove the gas cap and drive something bigger underneath it.

[jonathan180iq]

I don't even own a GZ.

When I upgraded, I actually downgraded to 150.

[dannylightning]

New poster here. Not a GZ250 owner but a new TU250 owner. I bought the TU250 to turn it into a cafe racer. Below are pics of my little TU cafe racer. I know it will never be a true racer but I love the look of the bike. I hope you all like it as well.

Thanks

http://img34.imageshack.us/img34/463/15827276.th.jpg (http://www.postimage.org/image.php?v=gx1q4e00)
]

DUDE!!!! that is killer, i really, really don't like the look of those bikes but you have done something completely awesome to that thing.
that is the coolest little 250CC bike EVER!!

[dka67x]

Thanks to all who liked my cafe racer. I appreciate the comments.

To those who are looking to install FI on the GZ, I have the service manual and I will try to post the info on the TU250 FI set up.

And to the original intent of this thread, I hope there will eventually be a TU250 section. I think there is a growing number of us to TU owners. Thanks to the GZ250 owners for letting us hang out here :)

[phaze1todd]

I joined this group just so I can find out more about dka67x's bike.

I need details:

rearsets, seat cowl, signal relocation, etc.

I wanna do this!

[dka67x]

Phase1todd,

Glad you like my handy work. As far as details go, I'll try to give you as much info as I can. I will try to post pics later.

The rearsets are off a 98-05 (I think) ZX6, Got them off ebay. I designed a bracket to use the existing footpeg holes. I had a friend laser cut them out of 1/4" aluminum. I had to add another 1/4" spacer between the bracket and the frame to bring the bracket out a little more for clearance issues.

For the rear cowling I cut the back end of an old gas tank that I had lying around. I folded up some sheet metal and riveted it to the tank. A crap ton of bondo later and I had a decent looking cowling. The paint shop that I used, really smoothed out my handy work to make it look good.

I relocated the turn signals to the fender mounting holes. To do this I used metric tee nuts and sandwiched the frame between the signal and the tee nut. I did have to re-tap the tee nuts though. They come with a M10 x 1.5 thread. The turn signals have a thread of M10 x 1.25.. I think pictures will better explain this. I'll post pics later (they're on another computer)

For the seat, I used plywood, sheet metal and delrin or UHMW. I'm in the process of making a new seat so I'll document with pictures for a better understanding

I hope this helps. Again, I will try to post pics later on to help understand some of the things I did.

Thanks,

Dave

[phaze1todd]

Thank you very much, Dave.

-Todd

[Water Warrior 2]

Pretty neat look. I doubt most folks would be able to figure out what you started with and modified. A one of a kind bike is hard to beat and you didn't need a zillion $ to do it. Just for my own curiousity though, are you still able to return the bike to original condition if you choose ??

[dka67x]

Water warrior,

The only things that I had to hack up were the shift lever, rear brake lever and the headlight brackets. Relatively cheap parts. When I had the bike painted I had them paint the original fender as well so I can put everything back to the original look. And thanks btw.

Todd,

here are the pics, if you need more info let me know

Signal

http://www.postimage.org/TsA6Ql9.jpg (http://www.postimage.org/image.php?v=TsA6Ql9)

http://www.postimage.org/TsA6XPA.jpg (http://www.postimage.org/image.php?v=TsA6XPA)

http://www.postimage.org/TsA71OS.jpg (http://www.postimage.org/image.php?v=TsA71OS)

Cowling

http://www.postimage.org/TsA7jgS.jpg (http://www.postimage.org/image.php?v=TsA7jgS)

http://www.postimage.org/TsA7lM0.jpg (http://www.postimage.org/image.php?v=TsA7lM0)

Rearset

http://www.postimage.org/TsA7De0.jpg (http://www.postimage.org/image.php?v=TsA7De0)

Seat (I'll post more pics as I complete the new seat)

http://www.postimage.org/TsA7NcA.jpg (http://www.postimage.org/image.php?v=TsA7NcA)

http://www.postimage.org/TsA7PHJ.jpg (http://www.postimage.org/image.php?v=TsA7PHJ)

http://www.postimage.org/TsA7SbS.jpg (http://www.postimage.org/image.php?v=TsA7SbS)

http://www.postimage.org/TsA81ar.jpg (http://www.postimage.org/image.php?v=TsA81ar)

[Water Warrior 2]

Impressive shifter and rear set foot peg work.