PitPro 125RR

[stoozo]

Well, I went shopping again....this time $70 poorer....I think not to bad.

Ok so quick look over it, backwheel is cheese again. Has like girls cheap push bike levers adapted to the clutch and front brake...Frame looks good forks and suspension are NOT blown :thumbup: has a rear brake caliper and brake but no pads, front brake is all there. Apparently has some gear issues...but hopefully thats not to hard to sort. Tyres are near new :thumbup: I think I did pretty well really!!

Except the bloke I got it off picked himself up a x2 140r for $180.....The other week, clean as, and perfectly running...WOW...NOW THATS A REAL BARGAIN! Oh and I got wind of an MX track up in Nairne....Sam seemed like a good bloke might try get him upto the SA miniriders weekend in Morgan :thumbup:





Cheeeeeeeeese

 

[Blender]

lol, stu, in the space of a month you've gotten yourself 4 bikes!

whats the plan with this one? you could make it the exact same as your other pitpro!!!

 

[stoozo]

lol, stu, in the space of a month you've gotten yourself 4 bikes!

whats the plan with this one? you could make it the exact same as your other pitpro!!!

Reps + for noticing but its actually the 5th in I think 6 weeks after the TDR and you guys started me off again....hahahaha!

I tried to explain to everyone I really really really like bikes, riding them, jumping them, and then fixing them!!

I've been out of the game for a while....There was probably a good reason I had a 5 year hiatus from bikes really.....Totally different kind of bikes but yeah, its all the same to the bike gearbox in my brain. Actually pit bike are far far more exciting than hurting myself falling off BMX's...I rode one briefly yesterday and in 2 minutes I was hurting.....stupid things bikes with pedals, I'm finally on the right path...motors AND only 2 wheels!!!

:grinning-smiley-003

 

[Blender]

haha, good on you for findin the time to work on them, i struggle with 2 bikes as it is! i read that u were interested in selling some parts of it, i might be interested in some, if ur selling.

keep up the good work

 

[stoozo]

haha, good on you for findin the time to work on them, i struggle with 2 bikes as it is! i read that u were interested in selling some parts of it, i might be interested in some, if ur selling.

keep up the good work

Yeah I run a small horticulture business, so I get a good amount of time around the place to do stuff. Plus I actually like working on bikes, its even better than working on gardens!! :thumbup:

 

[Blender]

yea, anything is easy if you enjoy doing it. except changing tyres without levers. no matter how much u like that, its never easy....

 

[stoozo]

Also its got a PERFECT, packed muffler :thumbup: Which I badly needed...its still looks pretty much like when it came from the shop, the exhaust not so much! Might clean up ok.

 

[stoozo]

Got it running this arvo after work!!

[video=youtube;BEtICIaoYas]https://www.youtube.com/watch?v=BEtICIaoYas[/video]

 

[my67xr]

that video makes your flywheel look ok !!
it's not as nice in real life...
this is how not to remove a flywheel, don't use a sledge hammer, and a big flat head screwdriver to pry it off against the engine case, get yourself a $20 puller !!











the gearbox issue of not changing gears is pretty much sorted now, 2nd gear wasn't looking the best
when we took it apart
we swapped in a good countershaft/gear set



stu also found another unexpected problem when he removed the clutch cover too.
the plastic oil pump drive gear had gone to lunch !






compared to a good gear

 

[stoozo]

Wow I cant believe how bad that oil pump gear was! Not that second was much better....Looks much better than it did! I might end up keeping that one and selling the other pitpro motor. I'll pull the head off it sometime and see what kind of shape its in!! I think the foxico 125 will go into this bitsa bike. The other 125 out of the pitpro can go into the bike the 160 is coming out of. I'll run this 125 in my pitpro until the 150 is sorted!

Compared to the other 125s ive had those motors go much better! Even when the 150 gets working, I'll keep one of these, always good to have a spare motor ready to go :thumbup:

 

[stoozo]

Also DONT look at the spark plug thread...its fine the plug isnt going anywhere!

 

[stoozo]

So my67xr found out today! This motor has a big valve head(just cause it was apart.... I wanted to look aswel but work ie money was calling today)! Pretty sure my other 125rr has the same head! Score! Sorry no broadband tonight! So only small photos!

Big values


Factory porting?




Then decided the exhaust also needed porting....^

 

[zwebx]

looks like shes already been ported The stocks are ****ty casting on the walls

 

[stoozo]

looks like shes already been ported The stocks are ****ty casting on the walls

Yeah I'm pretty sure its factory porting! It did come stock with a vm25!! I kinda knew something was up with that cause its a bit silly for a regular 125!??

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[my67xr]

it is factory porting,
that's only if you call the area under my back verandah a factory

 

[my67xr]

before pic-



and the pile of alloy filings that was on the ground after (about 4 match boxes full)-

 

[stoozo]

Mate God has absolutely nada on you, damn!! I was working so speed read...didn't totally realise you did all that!! Are you sleeping in this week? Ill drop passed around 11am tomorrow if you are!

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[my67xr]

Yeah I'm pretty sure its factory porting! It did come stock with a vm25!! I kinda knew something was up with that cause its a bit silly for a regular 125!??

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no, a 22/26mm china copy Mikuni

 

[stoozo]

Ok so its a 26/22 on a 125cc and it was punchy before!! Not selling that motor in a hurry, worth to much now!!

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[my67xr]

Ok so its a 26/22 on a 125cc

Mikuni 22/26mm..


^^ $250 delivered, but have an alloy cylinder and better gearbox now
Lifan Racing 125cc Motorbike Engine Motor Manual Clutch Dirt PIT Bike 4 Gears UP | eBay