New to the forum and acquiring an MC21 for a bit of a project to turn into a track only beast for next year.

So far I have bought a bike (R model), a spare rolling chassis (SE model), and a tonne of Tyga bits to make it pretty and pretty fast.

The bike is coming from Japan, bought off the auctions there. It is still 6 weeks away but i'm already champing at the bit to get things underway.

Here's the bike:


And here's the spare chassis (with bonus electrics):


Here is the list of stuff that showed up from TYGA today:
1 x Screen Clear, NSR250 MC28, Kit. (SCRE-0021) = $31.85AUS
1 x 2T Blank Plug (TYLY-0012) = $4.13AUS
1 x Front Fender (GRP), RSW style (BPFF-9001) = $34.25AUS
1 x .Set, Exhaust Chamber, Side By Side Type, Stainless Steel, MC21/28 (EXCS-0005) = $601.66AUS
1 x TYGA Flywheel Puller/RC Valve Remover Combo Tool, NSR250 (TYTO-0014) = $41.36AUS
1 x Upper Cowling (Race GRP), NSR250 Suzuka Style, Race (BPFU-9108) = $109.60AUS
1 x Lower Cowling (GRP), NSR250 Tyga, Stock Shape, Assy. (BPFL-0001) = $141.80AUS
1 x Kit, Seat Set, budget (Race) MC21 GP Race (BPFS-0059) = $330.47AUS
1 x HRC Radiator Overflow Bottle Kit, Assy. (BPAC-0002) = $25.86AUS
2 x Silencer, Aluminium, Two Stroke, (Special Promotion), Assy. (EXSL-0005) = $68.25AUS
2 x Blank Plug holder (TYLY-0015) = $8.13AUS
1 x Hi Flo reeds, MC21/MC28, Assy. (TPER-0001) = $87.84AUS
1 x Ignition Rotor (Total Loss), MC28 (TPER-0040) = $75.19AUS
1 x Woodruff Key, Offset, 2 Degrees, NSR250 (TPER-2044) = $6.63AUS
1 x GPS Blank Plug (TYLY-0014) = $10.21AUS
2 x Spark Plug BR10ECM, MC21/28 (98079-60875) = $25.67AUS
2 x Top End Rebuild Kit MC21/28, Cyl B Assy. (NHPS-0001B) = $199.61AUS
1 x Holder, Fork, 41mm (TYTO-0018) = $23.78AUS
1 x Engine Stand, NSR250 (TYTO-0006) = $34.19AUS
1 x Clutch Lever CNC Black, NSR250, CBR250RR (LEVC-9011) = $19.81AUS
1 x MC21 rear stand bobbins, Assy. (TYLY-0009) = $9.44AUS
1 x Brake Lever CNC Black, NSR250/MC22/NC30/NC35 (LEVB-9011) = $35.15AUS
2 x Main Jet, #170 (99101-393-1700) = $9.60AUS
2 x Main Jet, #175 (99101-MCK-1750) = $9.60AUS
2 x Main Jet, #180 (99101-GHB-1800) = $9.60AUS
2 x Main Jet, #185 (99101-MAA-1850) = $9.60AUS
2 x Collar, Manifold, NSR250 (Special) (EXMN-9003) = $87.00AUS

Now, I've also started accumulating some other bits and pieces that will be needed;
Clutch springs
Bearings
Complete Gasket set
Fork bushes and seals

As well as spare cylinders (in excellent condition I might add)
spare rear cylinder head with HRC hose
Spare tank
Steering damper (needs rebuild)

My plan is to do a ground up rebuild of the chassis (new bearings everywhere) and a top end rebuild on the engine. Having said that the engine will be coming apart to remove those nasty casting burr's and the like. Hopefully the crank is in good order as I'm not keen on replacing that yet!

My plans so far (other than bolting on all the tasty bits listed above) are;
Powder coat wheels (black)
Powder coat swing arm (to fit my planned replica paint scheme)
Powder coat Fork bottoms
Powder coat other misc. parts as I deem worthy (top triple clamp comes to mind)
Rebuild front calipers (and possibly master cylinder)
Bead blast engine cases/cylinders etc to give it that 'new' look
Run total loss
Pod Air filters (no airbox but I can't bring myself to run just open carbs)
Remove oil pump
Investigating running a GPT GPS timer/dash
Hand make a new wiring loom
Refresh all bolts with tasty stainless and alloy where ever possible
Rebuild front and rear suspension (rear unit I will have to send off)
If I can find enough information I may have a go at some mild porting. We shall see.

As the bike still hasn't shipped yet I will kick things off with building myself a timber workbench (I've no garage and have to do most of the work on the back deck) and paint the bodywork at my friends place. This of course means a second round of painting when the bike arrives and I have a petrol tank!

I added up the money spent so far and got a bit of a fright. I will probably try and sell off the stock bodywork and some of the road gear to help resuscitate my credit card. Once I'm done riding this little beastie it will get a tidy up and preparation, and be sealed into a perspex box to become the feature 'bar' in my man shed (when I stop spending money on bikes and buy a house).

Hi Greggo,

Quite an impressive shopping list! Been through a similar experience myself with my MC21's.

Since you are building a track bike I have some spare new (in bags) race parts if you're interested: HRC wiring loom, F3 carb brackets, HRC airbox (used but VGC). I've also got a spare used petrol tank if you're after one too - no dents or rust.

There are a few NSR owners in Melbourne so you should be able to get plenty of help if needed.

Cheers

Scott

Love it! I was going to only have a track bike, but they get under your skin.........

So my first job was to build a bench. Job jobbed. Only took 3/4's of the day. I was surprised, it went together easily.

I turned this:



Into this:
[IMG]http://i261.photobucket.com/albums/ii59/breeseg/2011-10-29132054.jpg[IMG]

into this:



and finally, into this:
[IMG]http://i261.photobucket.com/albums/ii59/breeseg/2011-10-29190903.jpg[IMG]
[IMG]http://i261.photobucket.com/albums/ii59/breeseg/2011-10-29190916.jpg[IMG]

Designed to fit in my garden shed when not in use, hence the castors to get it there. A friend of mine is going to bend me some stainless steel to put on part of the top. Handy for working on some bits and pieces as it is easier to keep clean (like working on suspension etc).

Next job is to start surfance prep on the fibreglass (and seal in the belly pan for racing). Knowing the quality of tyga output, prep won't take long. Chances are I will have the body work well and truly done before the bike is half way here.

oops. Not sure what I did there...



Hey Middo, I might be tempted by your air box, PM with some deets.

Why is there no edit button to fix my mistakes I inevitably make when posting?!

Why is there no edit button to fix my mistakes I inevitably make when posting?!

Use the original "NSR-WORLD" style (change it in your profile)... it's layout it much clearer.
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So i've got confirmation that my bike is in a container, on a boat, on it's way from Japan. Can't wait.

I rebuilt my steering damper today, I wasn't able to get new seals, so reused the old ones and used fresh 2.5W oil. It's cured the inconsistent movement, but will have to wait and see how it goes with the reused seals. It may only be temporary (which means i'll be forced to invest in a hyper pro - how terrible).



I was able to find seals with the same inner and outer Diameter, unfortunately they were just too thick. (New on the left, old on the right)



And to keep myself busy I removed the studs and power valves from the cylinders, fairly easy job, I expected them to be much more stubborn. I measure the ring gaps on the piston/rings that came out of the cylinders and got .045-0.5mm on the top ring and 0.40-0.45 on the bottom ring. Cylinders themselves look to be in pretty good nick, and i will prep these to go back in (but i'll wait until i've compared them to the cylinders on the bike when it arrives before assembling the power valves).



Cyl 1:



Cyl 2:



Questions:
What do you think of the cylinder condition from the pictures, and
What is the best way to clean up the valves space inside the cylinder (soup)?[/img]

So the bike finally arrived. Just in time for Christmas, just as well, i've 10 days off so plenty of time to build an engine assuming I don't discover I need to buy a crank or something.

So all this will eventually become a bike:




After unpacking I have stripped the engine of ancillary naff so I can clean it before complete dissassembly.




Learnt some things about the bike. It is an ex racer - various bolts are drilled for lock wire. The spare chassis I got is quite rough, the fork tubes will not be useable, but I got those for the internals anyway.

The importers also snapped a couple of the carb joints so they will need replacing at some stage.

Crank web has a stain on it from what appears to be rust that has been removed.

So first job is the engine. Clean, dismantle, inspect, tidy the cases inside with the die grinder, reassemble and put away for when the chassis is ready to meet it....

Can't wait...

I now have a shed load of crappola up for grabs if anyone needs any road going stuff. Everything from fairings, chambers, straight subframes, to a full lock set with key.

That's you locked in the shed until the spring!

Nice! So you can't rego it cause no compliance plate right? Do you know why its ok to import and compliance cars from Japan but not bikes? Sumoto seem to have an endless supply. Just hard to comprehend.

it's not too bad if they're pre 1989, but later models can be difficult. I'm assuming that Sumoto would get around it by holding an import licence and being able to comply the bikes themselves. Costs a good couple of grand, but the more you do, the cheaper it gets. Notice they only stick to a few models? I'm suspect that they bought Otobai Imports (who hold the licence to do TZR's) - or at the very least have a cosy relationship. It was moved down to Melbourne close to them recently.

Yeah true. Wouldn't shop there myself personally, just curious. Import monster keep saying they are going to do bikes as well but so far no news. Anyway, have a great time rebuilding the bike over christmas, have a happy and safe one and a fun new year.

MAte, this bike was done through import mnonster. You just need to call them to talk about it, but they won't be importing any post '89 machines to be registered on the road.

Preparing for complete disassembly...



It all came apart quite easily....



Here's a pic of the water damage on the crank webbing. I'm guessing this engine was left idle for a period of time.



The thin rubber o-ring in on the centre has been quite badly stretched, will this be a problem? (I can see it at least being a PITA to reassemble)

Checked the crank condition against the specs listed elsewhere and the crank/conrod gaps are .6 and .55 so well within tolerance.

My only real concern at this stage is the water damage to the webbing, and the bearing condition. They feel okay....but....

Clutch looks near brand new, basket included. Everything else looks to be in great knick.

Next step is to clean the engine and cases with the soda blaster...I reckon that will be enough for today. While I research the centre o ring on the crank...

It's hard to see but this is the o-ring...