Learning about two strokes

**WRT** · 2nd February 2006, 10:08

Yeah, there were a few! Not enough to make up the full missing peice of skirt, but enough to cause serious headaches. I'm also going to have to give the expansion chamber a damn good clean out as Ixion mentioned, as I suspect there are a few bits still down inside that.

Oh joy . . . would be nice if I could find more than an hour at a time to spend on it too, I reckon (aside from waiting for parts and having to manufacture the tools to do the job) I could have had the entire job done in less than a day.

**Brian d marge** · 2nd February 2006, 13:57

The entire bike takes 8 hours from bare frame and diassembled Engine.

Thanks for finding out whhere the stamp mark is ( Ill still measure though !)

Interexting note , The Pro X rod kits are about 210 NZ ( 1600 yen ) but the complete crank assembly is 20 000 yen ,, will find out in a few min when I go to bike shop

Well your nearly there ...good luck , keep exercising or it will hurt the next morning on that first ride !!

Stephen

**F5 Dave** · 2nd February 2006, 14:46

Think Northern or Whites are the Wiseco distributors

Just got a 125 piston & it was , erm, maybe $130, heck can't remember, but something like that, but it was old stock. Just on the wiseco site today looking for when I will do the GasGas as they are std. Think that was $130US

try http://www.wiseco.com can order on line or just get an idea.

There you go $120.87US say worse case $30 shipping, to NZ at .68 that's $220.

**Brian d marge** · 2nd February 2006, 15:36

Sorry folks your goin to hate this ...New fork springs, new chain, 1 almost new rear sprocket and new front sprocket

all up 100 NZ ....man the original honda spares can be a bargain sometimes !!!

A very happy Stephen

**WRT** · 2nd February 2006, 16:02

Man what a mission. Ok, Whites are distributors only, so cant purchase through them. Northern arent stockists, but they put me onto Power Sports (good on them for suggesting someone who could help me with something that they couldnt). Power Sports again are distributors, but they quoted me a price that I should be able to get through any of the local retailers - they suggested Spectrum. Apparently regardless of A and B models, Wiseco just do the one kit, called the 702, priced at $221 incl. GST.

However, on trying to get hold of Spectrum, their number just comes up engaged, so will just have to keep trying. Meantime I'm still waiting for Cycletreads to get back to me, I spoke to Mike there this morning who has been quite helpful, he quoted $243 for the Wiseco kit but when I asked if that was A or B he said he'd have to go check and he hasnt gotten back to me yet. Will try to get hold of both Spectrum and Cycletreads tomorrow, but I have to admit that I am tempted by eBay, seeing as its only half the price I could also order a few other bits like reid valves and so on, and get way more for my buck.

Which brings me to my next point, how often should the reid valves be replaced? Should I be doing them at the same time?

And F5 Dave, thanks for the pointers, you got me heading on the right track with that info.

**F5 Dave** · 2nd February 2006, 16:09

Carefully inspect the reed valves. Any damage, fraying or delaminating will be obvious. They should lie flat on the valve housing.

**Brian d marge** · 2nd February 2006, 16:27

My parts catalogue for the ME03 19 ( 1996 ) shows

Crankshaft ass at 25000 yen ( 325 NZ )

piston complete ( 5000 Yen A or B NZ 65 )

reeds 500 yen each x 2 13 NZ total

Now this catalogue is a few years old , but the prices havent risen by that much 30 percent is my guess

ie the springs I bought this morning were 2150 yen catalogue and I paid 3150 yen

This probably doesnt help , but might give an indication to the cost of Genuine spares ...

Stephen

**cheese** · 2nd February 2006, 21:48

Teh guys at Spectrum are hell busy fixing my RM. LOL BUt they are flat out. Try in the morning.

Go for eBay! Wiseco or ProX.

**WRT** · 10th February 2006, 09:54

Ok, got some parts on order, they should be here on Monday arvo. I did go through Spectrum for them, $220 for the wiseco piston kit, $110 for the full gasket set and $25 for the seals. Bearings were going to be $40 apeice tho, so have flagged that and will try to source my own ones seperately. Worst case scenario, the current ones actually arent in bad condition so might leave them in.

And a little plug for Spectrum because they have been most helpful and on the ball - call Grant on 489 5355.

**F5 Dave** · 10th February 2006, 09:59

I'd leave the gearbox bearings alone if they seem fine. Output (by sprocket) can get a hard time if chain too tight but usually last ok if oil ok.

The mains always need replacing if you have puled them out + 250s will kill them (can't remember all the thread) & they are big so get expensive, bought some yesterday ~ $25ea from Serco or any decent brg shop. C3 clearance.

**WRT** · 10th February 2006, 10:05

Cool, thanks for the advice Dave. I'm going to do a run around and see if I can pick up some, I've got a mate who's a car mechanic so I'm going to lean on him to see if he can source some for me. Fingers crossed. Just have to get the numbers off the old ones when I get home tonight.

**F5 Dave** · 10th February 2006, 10:11

Often they are cheaper with the dust seals fitted, but you just flick those out & wash the grease away with kero.

To insert throw brgs in the freezer for an hour or so. Heat cases. Push in with press or tap in with hammer carefully & always use a big socket or something to press only on the brg outer. Seals go in last.

Cases can be pulled together using longer bolts gradually pulling cases in. Crank will be pulled to one side & needs a smack (nut over thread to protect end) to centralise & free, will make a crack noise often. Check gearbox operation before & during pull together. Sometimes need a turn to change gear. Detent star & follower will need to be fitted.

**cheese** · 24th February 2006, 09:38

Come on WRT, sort that bike out! LOL

**WRT** · 27th February 2006, 12:55

Well, a bit of an update for ya. After I managed to get it all back together the weekend before last (working till about 11pm on the Sat night to try to get out for Sundays ride), the engine fired up first kick (very first kick, was stoked at that) but the gearbox seized up during the "test" ride down the driveway. Fortunately I was at very low speed, and just skidded to a halt. Couldnt get it out of gear, so had to carry the back end of the bike all the way down the drive to get it back into the garage to work on.

That was where my problems started. Had to mess around for a while getting the chain off because the joiner was in behind the frame. However, all up, it only took me around an hour on the Sunday morning to get the engine out of the frame and stripped down to the point where the crank case can be split. The next three hours were spent coaxing, begging, pleading, smashing, bashing and crashing at the casing trying to get it apart. It would appear that the 'box had selected two gears at once, which caused it to twist up and grab the casing. After the three hours I only had the casing split less than half an inch apart, so before I wound up smashing it to peices I put it on one side and called it quits.

Was away from Thursday to yesterday, but I did get a mechanic mate of mine to take the engine and I got a txt of him just about half an hour ago saying hes managed to get it split. Turns out that I missed a thrust washer out somewhere along the way.

At least now I know what needs to be done, and it shouldnt take too long (assuming I can find the missing washer . . .) to get it all back together.