dafc

Hey guys!

I am going to embark on a massive engine overhaul starting tomorrow. I am going to get the cylinder rebored from a very reliable rebore guy in my city, get the crankshaft repaired, new bearings etc etc you know the usual? The thing that has been bugging me is that my mechanic says once the engine has been hauled over I should run it on 2 times the amount of 2t oil I normally would for the first 1000 kilometers, does this make any sense? At least to me it didn't :s Coming over to my second gripe somebody stole my rexy's silencer muffler (you know the mesh like thingy inside the silencer, Yes! somebody was crazy enough to steal it!) so I bought this new muffler and my motorcycle has lost the signature 'dib dib' it sounds muffled now more like somebody is choking the damn thing! Do you think that muffling down puts strain on the engine? A friend of mine said that the new mufflers restrict the air flow and this puts strain on the engine and I don't want my hauled over engine to be under stress from day one If somebody could post pics of their stock mufflers with the signature RX100 sound I might be able to hacksaw my way to glory

sunilg

Two-stroke query approved.

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aargee

Sharing my 2 cents of knowledge
Yes to an extent & no if you don't wish to; if you need that authentic sound quickly, then the only way is to drip the oil like crazy ASAP all over from cylinder to exhaust. However during the run in period, a mere 25ml of oil per litre of petrol is good & 30 ml is preffered for 1st 1000 Kms. After than you may choose between 20ml to 25 ml. Also I hope you'll know to keep it rich during the run in period.

No straing; its called core & not the muffler. The muffler is put up like baffles inside the exhaust which CANNOT be removed unless the exhaust pipe is cut open. So the core is the one you lost. But don't worry, over the time when there's sufficient carbon deposit you're bound to get back the sound. Ensure that your exhaust pipe is not stolen otherwise you'll NEVER get the same old Rx100's beat, especially with the new ones.

Not sure on the strain, but the newer ones have 1 additional baffle compared to the old ones. So they restrict the flow of exhaust gases due to which you'll have less sound. But I don't think it strains the engine in anyway.

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dafc

First of all let me take the opportunity to thank you for reply to my post! I have a bunch of questions to ask you

Do you mean I should increase the ratio of 2t : petrol?

Don't you think 25ml per litre is a bit lean? I have one more thing to ask you if I run the engine with a lean mix does it make the engine susceptible to break down easily? Like you know the black marks the bore and piston get all over em once you push it beyond limits which mark a ceasure?

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Alibaba

Hey aargee, one question. The 2T oil is usually stored on the left hand side oil tank in the RX and it would provide some fixed amount of oil to the engine. How do I vary the flow. Do I add additional oil with petrol or I keep the oil tank completely empty and add 2T oil to petrol everytime I fill up? If I need to have oil in the side tank and add some additional oil in petrol, how do i know how much does the side tank supply and accordingly how much do I add?

Sorry for a lot of questions. But just want to know how do people usually do it. Am also getting my RX restored with a new engine block and piston set. So I will need to do running in and hence need some info from you.

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| '91 Yamaha RX100 | '08 Suzuki Swift | '08 Honda Dio | '09 Bajaj Pulsar 220F |

My RX100 Restoration project

NitinGirish

If you are using Autolube pump (side oil tank) then there is no need to calculate anything. Just make sure the oil pump is set to specifications and use good quality 2T oil in the oil tank.

During running in period, add perhaps 1% oil to petrol to be on the safer side.

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aargee

Its upto you. You may do it via oil pump or keep the oil pump in the regular ration, but have a premix for the additional amount

Lean??? What do you mean by lean? Are you saying 25ml is less or fuel will become lean?

More prone to trouble. My question will be Why?

I didn't understand this part

You need to open the right side cover where there's oil pump & adjust it. If you're experiened doing it, then no issues, otherwise refer manual or take it to Y.A.S.S.

Choice is yours. Each has its own pros & cons.
Pros of mixing will be that you're damn sure that you'll not run out of lubrication at any point & don't need oil pump anymore. Also your fuel tank is less susceptible to rust.

Headache is you need to be carrying the 2T oil always unless you don't care about any damn 2T oil mix & you lose the convenience of topping up every month or so.

Your regular pump is set to deliver xml of oil which your mech or Y.A.S.S should be able to tell. I guess the usual flow is half or 1 ounce per litre of petrol. If its 1 ounce then you don't need to mix

Anytime

__________________
Patience pays...The Vulture's virtue is patience and the bird always get it's food - Wise man saying

This is not a bakery. I don't sugar coat anything. If you ask for my opinion...then that's what you'll get. Don't be mad when it's not what you want to hear

Alibaba

Thanks man!

What 2T oil do you recommend?

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| '91 Yamaha RX100 | '08 Suzuki Swift | '08 Honda Dio | '09 Bajaj Pulsar 220F |

My RX100 Restoration project

aargee

Check you local store & post the list of 2T oil you get in your locality. I'll help you select the best among the row. Reason being, I can suggest you any oil, but sadly 2T oils are becoming a thing of past these days.

__________________
Patience pays...The Vulture's virtue is patience and the bird always get it's food - Wise man saying

This is not a bakery. I don't sugar coat anything. If you ask for my opinion...then that's what you'll get. Don't be mad when it's not what you want to hear

dafc

My apologies for using a term that I myself am not familiar with and causing confusion. My doubt about the ratio was cleared by the picture a couple of posts up. Which one of castrol jasofc grade, kinetic 2t no jasofc grade and mak 2t jasofc grade 2t oil would you recommend?

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RIP ਕਾਕਾ ਭੈਣੀਆਂਵਾਲਾ (Santokh Singh Rataurh)