it has begun... mito 350 YPVS on the cheap

[MaybeGuy]

observe pictures, and be jealous...

https://img150.imageshack.us/img150/5072/20122008194om4.jpg

https://img150.imageshack.us/img150/6820/20122008195ia6.jpg

and the beast will be shoehorned into this lovely frame...

https://img150.imageshack.us/img150/9066/20122008196pk4.jpg

well, my weekend was particularly awesome, and made slightly more awesome by spending more money for once...

went out in town, copped some bird whos house i was meant to be staying at that night, but this was at like 1am, so i went back out... met some of my other friends in town, and ended up crawling back to one of their houses because they said they had good central heating (?).

wake up in the morning by being poked a little by his younger sister (no, about 15 stone).
anyway, got up, ate some stuff, and started chatting to his dad...

who is doing up an RD350 to customise... so i bring up my mito and mention 350's dropping into them...

''i have a spare engine and you can have the entire running gear for £50''



SOLD! FUCKING SOLD! thought i...

''hmm, i think i'll have to accept that offer'' said i, smoothly, without weeing myself too much.

so now i have...

complete engine
YPVS valves etc
2 NEW pistons
2 barrels that have never been seized or seen a rebore (althought they need honing... at work... for free)
carbs
complete loom of electrical doohickys.

so my grand total for getting a cagiva mito, and an RD350 YPVS engine is £150

cheapest mito 350 ever...
along with these...

https://img88.imageshack.us/img88/2756/16122008178sf8.jpg

the guy also said its a ''Y2'' engine??
or something like that... mean anything to anyone?[/img]
____________________
Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[MaybeGuy]

mini update.

i put the engine in my mobile layapart room (reliant rialto) and split the casings, everythings all fine! just a bit dirty from where the crank has been out for so long.
so basically, its just a ''get the shit off and put the top end back together'' project.

https://img81.imageshack.us/img81/1113/20122008200iu0.jpg

https://img72.imageshack.us/img72/5567/20122008201gp3.jpg

https://img72.imageshack.us/img72/649/20122008202gh4.jpg
____________________
Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[Fnatic]

Lemme have a go

Good project there

[ms51ves3]

Jammy bastard

[twotakt]

Nice one bud, I'm glad you're finally turning into a 350 again, looking forward to further progress.
____________________
R.I.P. Tareree Shiimi, 1985-2008

[----]

Looks fun and good price aswell.

Wheelie machine
____________________
DRZ-400sm

[MaybeGuy]

another update... this time in the kitchen cleaning area.
with the help of mr. muscle, a toilet brush (new), the oven, and a bottle of enamel spray paint, i went about tarting up and cleaning the barrels a bit.

all done in the kitchen mind... using a hairdryer to dry the water off the barrel after cleaning, and an oven to bake the enamel paint on.

https://img401.imageshack.us/img401/7489/20122008203es1.jpg

and the bores... never rebored, nothing significant in the way of scoring, and nothing a good honing wont sort.

https://img401.imageshack.us/img401/6205/20122008204xv4.jpg

https://img151.imageshack.us/img151/7658/20122008205im8.jpg

the only thing that im thinking ''hmm'' about is the head.
obviously at some point its had some shit in the cylinder, and has pounded a nice little pattern on the underside. trying to fix this i know will fuck up my compression ratio, so i was thinking of just tidying this up a little so no swarf can come from it, and leave it as is, in the hope it will coke up during use.
any reason i shouldnt do this?

https://img522.imageshack.us/img522/8845/20122008206je0.jpg
____________________
Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[hmmmnz]

thats sweet as just give it a sand,
the carbon will fill up the little dents in no time
you'd have to grind loads off to make any sort of change in your compression ratio
____________________
the humans are dead
I kick arse for the lord
Wiring Diagrams BIDNIP it bitches

[synergy]

I`ve been planning some time ago the same,conjuction mitord 350, BUT have one question:

Would the original mito chassis support the rd 350 forces and tensions? (34cv vs 70cv) or we MUST reinforce it?


cheers

[MaybeGuy]

[Blau Zedong]

I can see the ebay header now -

"Mito 350 Unfinished project".

That is all.
____________________
18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth

[sickpup]

[MaybeGuy]

i have a crank that needs new main bearings.
____________________
Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[Thom]

[Blau Zedong]

[MaybeGuy]

rebuilt crank... only thing really.
engine reassembling? its a 2 stroke hardly difficult
and i have ALL the parts i need apart from the exhausts.

stock exhausts = no setting up
and whats a dynojet? £200 tops?

read halfway down the first post

for the electrical part, i was thinking of cutting everything off the RD loom apart from the engine running bits, and cutting the engine running bits off the mito loom, then just laying them over eachother. ie: 2 looms connected to the battery.
saves a lot of hassle then. i could even just not bother with cutting anything off and have 2 looms in there
____________________
Blue_SV650S wrote: it was a sh1te wheelie, but it proves that he can get it up in 3rd and can do angles. In summery, mattsprattuk is a gobby little sh1tebag, dopehead tw4t, but sadly for all of us, he probably isn't THAT full of sh1te!!
Kickstart wrote: Hi I tend to agree with Matt. All the best Keith

[nick606]

do a proper job matt and do it right stop being such a tight bastard and spend more than 100 quid on a bike. Don't go bodging this

[MaybeGuy]

[Blau Zedong]

YPVS engines are less tolerant of bodging than AC or LC lumps. Build em' right and they'll fly, get em wrong and they'll be forever slow and unreliable. I also don't rate your chances of melding stock YPVS pipes with the Mito frame. If you do manage it it will look cack. Comission a set of bespoke pipes from someone who knows what they are doing.
____________________
18:54:48 Rob Fzs: jews don't give away stuff for free

18:54:59 Rob Fzs: unless its their clothes/ hair/ golden teeth

[MaybeGuy]

[ms51ves3]

[MaybeGuy]

[NSR Mick]

Not wanting to piss on your bonfire Matt but what is this big obsession with mito 350's.

If you want an NSR250 buy one.

Everyone knows rd's are unreliable tuned and make less than 50bhp as standard so why do people bother?

i can sort of understand the RG500 into rgv frame for the GP500 rep but even then the 4 cylinder 500's are hard to get reliable power from and make no more power than my NSR as standard.

I'll get my flame suit.

____________________
If you dont like the way that I ride.......Stop trying to keep up!!!

[MaybeGuy]

[stevo as b4]

250cc powerbands are too thin and race bike like for my liking. If you get 70bhp from a 250cc it has a very peaky nature, and your going nowhere fast below around 8k rpm. Does anyone want to ride a bike all day long in a 2-3000rpm power band with all the noise and vibration etc.

More cubes for the same power makes for an easier time because:
1, You have more midrange
2, The powerband is normally wider and less sharp
3, More overrev in some cases, tuned bikes tend to peak higher and then drop like a stone power wise.
4, The biggest reason is that something like a 350YPVS engine will run maybe 20k+before even a top end re-build depending on the state of tune? If you look at bigger 4cyl 500's RD/RG, you can get 35k+ out of a motor with no more than routine servicing on a std ish example.

What does your NSR250 make power wise Mick?

I know a YPVS is an outdated design with cylinder liners, small reed blocks and a low rpm ceiling compared to later more developed 250cc engines, but some of these features like the ability to re-bore the barrels cheaply are what makes people like them.

Also 60-70bhpw isn't really stressing them too much or making them that much more maintainence intensive like a 70bhp NSR/RGV etc would be.

Lastly you can expand the capacity of a YPVS350 to 400cc, and with Banshee parts and aftermarket stuff you can take them out to 500, even 600cc! Most 250cc sportsbike's can't be stretched to or run reliably for long even if its possible with a 300cc big bore conversion.

a std YPVS350 should be at least 50-52bhp r/w, and thats the same as an early RGV250, so it just indicates the difference in engine characteristics between them. As for the RD/RG500's id be very suprised if you find a good std one that does not make 70-75bhp r/w. With tuning the RD has topped 125bhp, and the RG500, 145bhp all wheel figures!