Looking at buying 3XV2

[maccas]

You might want to jet up if you do decide to fit a more fiery cdi. It will soon nuke itself to bits on those jets!

Dan

[busa1300]

Yes, I was surprised to see stock jetting in the carbs.
But I am guessing since the airbox is so restrictive, and that the pipes have the JMCA tag instead of being track only.....it doesn't need more fuel.
It seemed quite fine as set up....but if I do decide to unrestrict more, then the carbs will be my biggest enemy to gain control.

[ybk]

You might want to jet up if you do decide to fit a more fiery cdi. It will soon nuke itself to bits on those jets!

Dan

Dan, may I ask why you say that it would be borderline jetting with a better CDI? Those are stock jets and I think he's around sea level(?) so it should be fairly safe with say a sugo box?

Bike runs good, and it's not really a HP thing....more just how the bike feels/handles on the road.

To be truthful with myself though....I should have held out for a 4DP....

Usually a bike just feels right or not when you get on it. Never ridden a vj23, have ridden 21's,22's, NSR's, KR's and Rs's though and the 3xv always felt more 'right' haha . I thinks it's a very subjective thing, a little like feeling you're riding 'in' a bike or 'on' it   I think comparatively the 23 has more development behind it as well as more sophisticated suspension?

[busa1300]

I did do a complete rebuild of the VJ23 suspension with all new bearings throughout, along with new tires (Continental ContiAttack SM Supermoto Tires)
So...I'm sure that if I do the same to the TZR it will be an improvement to some degree.
It took a while for the VJ23 pink and purple to grow on me, I'm sure I'll learn to like the black frame on the TZR eventually as well as it's other traits.

NLA parts...I will need some exhaust gaskets....as well as quite a few other bits...
But just looked and they are unavailable.....any other outlets or options for these?
3XV-14613-10-00 Gasket, Exhaust Pipe

[ybk]

I'm pretty sure that's just the springy copper gasket. It's likely that your aftermarket pipes don't even use that gasket (usually just a flange). Either way that gasket never wears out, I re-use them infinitely but add a thin smear of yamabond on both sides. I hate 2 stroke leaking out there. If you really need new ones then the CruzinImage gasket set has a 2 of those copper gaskets that are a pretty good copy.

https://www.cruzinimage.net/2017/11/14/yamaha-tzr250-3xv-engine-gasket-set/

[maccas]

The ox exhausts are proper race exhausts, don't be fooled by the jmca badge. They're capable of making mid 60's and beyond horsepower.

The stock jets are set up for a restricted motor that isn't making any power at the top and restricted carb rubbers too.

When i ran with the airboxes and similar pipes I was up around 320/330 on main jets and 55 powerjets too. This was with an 80 or 100 main airjet i think. So with a smaller main airjet you may need smaller mains, but not as low as stock.

Dan

[casal-fan]

Agree with Dan.

The fat OX pipes are really nice.
I had them mounted on my first 3XV with R cylinders blessed with the touch of M77 - custom porting with only 190* exhaust port but a lot of work on the aux. exh. ports to make them larger.

With the 28mm carbs, upper airbox lid mod. , those cyls. std. VAJ for 91R model, was using around 290-300 on one cyl and 330-340 on the other, with the needles dropped a notch.

This worked good at the track - but quite rich on the road where chances for full throttle in longer periods are not so good.

Just my 5cent.

Congrats, very nice bike.

[Steveog]

Busa- I echo ybk's recommendation for the CruzinImage gasket set. Their exhaust gaskets are fine..if you need them. You might want to get cylinder base gaskets from gasketguru.com. Dan Maccas shows a lot of restraint in not promoting his own shop here on the forum...so I'll do it for him.

My 3xv has a rubber o-ring inside each pipe. They are Dog Fight Racing Stainless units. I still use RTV there to keep things tight.

[yanw]

If you are after standard style exhaust gaskets Norbo on rdlccrazy does them, they are the same as the 350yvps ones. They work fine for me and my "augmented" Martin77 flanges.

[busa1300]

Thanks for all the help guys
After I find all the missing parts for the bike, I should have a list of all the parts I will need to redo the bike.
Then it will probably sit until after I recover financial from the Winter holidays, before I begin the actual project and a thread on it.

Yamaha shows that the SP uses a different exhaust gasket than standard R or RS.....
3XV-14613-10-00 Gasket, Exhaust Pipe    It has a 10 in part number for SP
The ones listed are for standard pipes I would guess.

No idea what the difference is between the two?

After looking at parts diagrams....the R-RS have one exhaust gasket, where the SP has two per cylinder.
The ones I need go between the flange and head, which appears to be larger than the standard mounting area...
Not completely sure, as will be the case with 3XV's until I learn more.
Could be an O-ring on the pipe and the cylinder side I guess also?

[ybk]

Do you intend to go back to stock pipes or keep the OX pipes?

[busa1300]

Will keep the OX pipes, finding the correct SP pipes/flanges would be too much trouble and expensive to ship...And I prefer the bit of performance they will give, whether I totally restore or go fully unrestricted.

[maccas]

There isn't a gasket used when fitting OX pipes. They have 2 o-rings in the pipe that seal onto the ally exhaust flange, then the flange just bolts straight into the cylinder. Most people just use a high temp silicone on the joint between flange and cylinder.

The two gaskets listed in the parts manual are for the SP cylinder to stock exhaust adaptor pieces. You don't need either of those gaskets.

Dan

[busa1300]

Thanks for that information, that should be easy to take care of then 

Bike will be undergoing a full rebuild....there is water in the trans....hoping/guessing waterpump seal went bad.
Lost a bit of water in radiator as well....Trans started to make a bit of noise, luckily I was only going around the block so hopefully trans is OK.
At least the engine itself is still OK 

[busa1300]

Also noticed...
My powervalves were moving/floating side to side while bike was running....
Bushing worn too much?
Simple to replace?