Alright, so I have restored a ZXR 250 that has been stuffed in the back of my parents shed by my oldest brother, gotten the rusted tank repaired, carbs all overhauled (all 4 carbies completely full of a mix of tank repair resin and 3 year old fuel (Thanks Causeway Yam for the carby work and retuning!!)).
The engine itself hasnt been stripped and overhauled beyond having a run of oil put through it, then swapped out and new oil, coolant and filters being fitted.
Now the bike does run really well, aside from a noticeable power dip around 7k RPM, which is probably a trait of the bike itself, however the dip seems more pronounced than would normally expect.
What I want to know is, beyond having been adding a carby cleaner and octane booster (nulon gear, added to fuel tank before filling, which has made a bit of difference so far), are there any other additives like oil conditioners and lubricant additives that are suitable for a bike that is probably a little filthy on the inside?
I only consider the additives as pulling the bike apart is not really an option, and I know from past use on cars that adding a good quality oil conditioner, running it per spec, then fully draining the oil and putting in a new load of oil will quite often remove a lot of crap from the engine, and help clean up, especially if a rebuild isn't on the cards.
Are the additives and solutions that are used for cars suitable for a bike engine that redlines at 19k? Is there anything to look out for, besides the different capacity between a 2L car engine and a 250cc bike engine (So only add a fraction of the additive)?
The engine itself hasnt been stripped and overhauled beyond having a run of oil put through it, then swapped out and new oil, coolant and filters being fitted.
Now the bike does run really well, aside from a noticeable power dip around 7k RPM, which is probably a trait of the bike itself, however the dip seems more pronounced than would normally expect.
What I want to know is, beyond having been adding a carby cleaner and octane booster (nulon gear, added to fuel tank before filling, which has made a bit of difference so far), are there any other additives like oil conditioners and lubricant additives that are suitable for a bike that is probably a little filthy on the inside?
I only consider the additives as pulling the bike apart is not really an option, and I know from past use on cars that adding a good quality oil conditioner, running it per spec, then fully draining the oil and putting in a new load of oil will quite often remove a lot of crap from the engine, and help clean up, especially if a rebuild isn't on the cards.
Are the additives and solutions that are used for cars suitable for a bike engine that redlines at 19k? Is there anything to look out for, besides the different capacity between a 2L car engine and a 250cc bike engine (So only add a fraction of the additive)?
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