Aprilia RS250 1999 Mugello Replica

[pedrobatista10]

i was bored at home, and i said to myself that i can remove the engine of the bike and save some cash not paying to someone to do it for me.

so i did

looks very dirt inside

out of the frame already

i may be wrong but i think this engine never left the frame of the bike in 20 years

look the powevalve housing, this after a cleaning with absorvent paper. when i opened lots of burned oil leaked

piston, i dont have a clue if its very bad condition or not. what you guys think?

cylinder head, no ideia again if bad or not

what's your opinions? full rebuild since i have engine out? btw, the engine i will not touch, no skills for that.

this was the first time i worked on a bike, im proud of myself that i did it. i organized all parts and screws on zip bags to not lose anything.

hope you like it!

[Calum]

Hey looking smart.

I mean, it's out now, may as well rebuild it yourself.

I dunno, depends whether you want it rebuilt or not. What's the mileage? These types of bikes tend to be owned by more mature owners so don't tend to need to rebuilding as often.

At worst, I'd throw a set of rings in there. They actually say not to clean the carbon off the piston as it retains the heat and allows the gases to propagate faster = more power. Well there goes the theory.

The head should be polished to a mirror sheen though.

Looking good though.

[pedrobatista10]

@Calum 15.000 km i think, its estimated time for a change of pistons i guess.

i would love to rebuild it myself, but i will not risk this engine. first i need to learn on dtx and rs 125 then i will adventure on this beast.

i think i will replace everything, pistons, pv's, pulleys, water inlets , basically make a complety fresh engine. then i will know what to expect from the engine.

i will take more time to make it running but i have more insurance that it dont break so easily.

btw, what products you guys use to clean engine, carbs and general parts? i heard brake cleaner is good, but want to know what you use first.

[NINJA]

@pedrobatista10 You can clean most things with Carb cleaner, which is not too abrasive.

[pedrobatista10]

what method should i use to paint the calipers?

and should i rebuild the calipers or no need?

[Calum]

@pedrobatista10 If you can get the parts to rebuild, then I would.

I remember one day riding to work, the rear brake seals failed. Leaking fluid all over my wheels. Discolouring the paint work

[DTR+NSR]

It's a Suzuki rgv250 engine in these isn't it?

[Calum]

@DTR-NSR That's correct.

[NINJA]

@pedrobatista10 If you wish to repaint them then just give them a rub down with some wet n' dry, then respray them with some Very High Temperature paint for a good finish. If the pistons are not damaged in any way, then you could replace the seals if needs be? I would perform a full strip down, thoroughly clean everything with a pressure washer, then give the outside of the pistons a very light rub with some fine wet n' dry and ruba small amount of copper slip on the outsides only. Then rebuild with new seals if required and perhaps new brass banjo bolts & nipples. They look to be in good overall condition, so a strip, clean, re-grease and rebuild might just be enough???

[pedrobatista10]

guys i think i will use vapour blasting services on carbs, engine cases, brembo calipers and some other parts to make it look mint condition. and price is reasonable.

i saw some photos and i like how it looks.

@NINJA @Calum its possible to powder coating the calipers? i want the original gold colour on them.

[NINJA]

@pedrobatista10 yes they can be powder coated, seek out a local firm and ask their advice.

[DTR+NSR]

@Calum I thought that was the case, I'd be checking the powervalves carefully as I know on the Suzuki's there prone to failing and dropping the power valve into the cylinder, ouch!

[pedrobatista10]

@DTR-NSR you are right, that the most dangerous part on engine, if the pin get lose can damage engine pretty bad. thats why i will change it

@NINJA will do that. thanks

[pedrobatista10]

hi

i will send my carburetors and brembo calipers to rebuild to "MHF Restoration Macclesfield Cheshire" in UK. they do amazing jobs in restauration projects.

anyone used this company before?

[Calum]

Can't say that I have. But I have never needed a carb being rebuilt before.

[pedrobatista10]

Hi

Long time without parts, so i will update with big package from BlackFriday that arrived today

Brembo RCS19
Brembo Rear Disc's and brembo pads
TWM Clutch Lever
TYGA Rear Step kit with carbon cover's
Mellotti handlebars and triple clamps
Domino Throtle

i keep the same brands for this rs250 build. why change when the quality is very good

still lots of parts to buy ...

hope you like it

[Calum]

Absolutely savage!

I literally could only afford to do this to one bike, let alone two!

Fair play.

Looking smart bud.

[pedrobatista10]

@Calum thanks

it hurts my wallet building this 2 bikes, but i dont regret it. with time i will finish this one too

and living with parents helps to save cash for my hobbies

next week im receiving Transmission Kit from Renthal from reputable seller in UK (TheTuningWorks)

[NINJA]

@pedrobatista10 But when they are finished and you get the joy of riding them, it all becomes worthwhile for-sure!!!

[Calum]

@NINJA Cough Still haven't used my RS yet!