[Group] SBF Yamaha Spark135

[FTW]

h4hahak1m, detail explanation is always very much appreciated. I believe it gives reader lots of knowledge which is usually the purpose of a forum.

 

My bad for not stating the fine prints and I had assume in my previous post was based on if all conditions remains the same but only with an increased in upstroke. Won't that increase compression ratio?

A+X:X where

A is cylinder volume (constant value)

X is a decreasing value. (vol at TDC)

 

With regards to the piston head/crown/top, this I must concur that it has advanced to another level of technology. Some with circular grooves / dimpled impressions which "GENERALLY" increases combustion efficiency because of managing the incoming airflow. Some with protrusion which "GENERALLY" give higher compression.

 

If we drill down to just the piston, "I" would be looking at 3 basic and 1 advance aspect.

 

Basic

Construction basically looks at materials used in making the piston. Generally playing around with amount of silicone content mixture. Weight and Thermal Management and often key in this phrase. Looking at reducing expansion, managing inertia.

Design is what's all the discussion as above. Basically getting a good air and fuel mix for efficient combustion. Moving the mixture closer to the plug for easier ignition. Reducing the distance between tip of plug and furthest pocket of mixture that needs to be burnt. Reducing events of uneven combustion / detonation of the mixture and better heat distribution.

Coating is self explanatory but benefits include increased power, reduced emissions, better response and resistance to failures.

 

Advance

Being the ability to comprehend the 3 basic and applying it to a street vehicle or a primary race vehicle. Reality is often hurting but common users often are looking at a dual street/track vehicle. Looking at a combination of torque, power, efficiency, resistance and reliability.

 

 

Of course than again, one thing leads to another and maybe we'll then switch to another topic like piston ring, coefficient and correlation of the piston to the cylinder (Engine Block).

 

I'm no guru but if anyone's keen to know more, I guess Google is everyone's best friend.

 

:faint:

 

You are very interesting, when you wanna come to our outing?

 

BRO u said de swage got do for spark? use which bike de for it? cos i cannot find haha

 

Motoworld.

 

lanchiao to that person u noe. puuuiiiikkkk.. lack of parental love i guess.. all efforts down the drain.. sial.. lol...

 

 

Anyone can teach me? Which brand de big bore better?

And among all street legal is yoshi de best? And does swage do de brake hose

Specially for spark?

 

The Yamaha FZ150 ones, Diasil technology!

 

$170++ to fix a damage fork? Or shop trying to carrot me?

 

Which shop did you go to?

 

Kindly read the owner manual prior to operation the machine. It will teach you how to run in your engine as well as periodical preventive measures required for your motorcycle. It will even state the requirements/specification of the engine oil, fuel and etc.

 

Engine Oil:

Type: SAE20W40 or SAE20W50

Recommended engine oil grade: API service SF, SG type or higher. JASO MA

 

The owner manual is usual found in the storage compartment within the motorcycle. Alternatively, you may download a copy from the below link.

http://www.scribd.com/doc/24733157/Yamaha-T135-Owners-Manual

 

Thank you.

[h4hahak1m]

h4hahak1m, detail explanation is always very much appreciated. I believe it gives reader lots of knowledge which is usually the purpose of a forum.

 

My bad for not stating the fine prints and I had assume in my previous post was based on if all conditions remains the same but only with an increased in upstroke. Won't that increase compression ratio?

A+X:X where

A is cylinder volume (constant value)

X is a decreasing value. (vol at TDC)

 

With regards to the piston head/crown/top, this I must concur that it has advanced to another level of technology. Some with circular grooves / dimpled impressions which "GENERALLY" increases combustion efficiency because of managing the incoming airflow. Some with protrusion which "GENERALLY" give higher compression.

 

If we drill down to just the piston, "I" would be looking at 3 basic and 1 advance aspect.

 

Basic

Construction basically looks at materials used in making the piston. Generally playing around with amount of silicone content mixture. Weight and Thermal Management and often key in this phrase. Looking at reducing expansion, managing inertia.

Design is what's all the discussion as above. Basically getting a good air and fuel mix for efficient combustion. Moving the mixture closer to the plug for easier ignition. Reducing the distance between tip of plug and furthest pocket of mixture that needs to be burnt. Reducing events of uneven combustion / detonation of the mixture and better heat distribution.

Coating is self explanatory but benefits include increased power, reduced emissions, better response and resistance to failures.

 

Advance

Being the ability to comprehend the 3 basic and applying it to a street vehicle or a primary race vehicle. Reality is often hurting but common users often are looking at a dual street/track vehicle. Looking at a combination of torque, power, efficiency, resistance and reliability.

 

 

Of course than again, one thing leads to another and maybe we'll then switch to another topic like piston ring, coefficient and correlation of the piston to the cylinder (Engine Block).

 

I'm no guru but if anyone's keen to know more, I guess Google is everyone's best friend.

 

Google is everyone's best friend. But understanding content that comes from google is another. One simply does not put into practise just by reading without understanding. Ok so i start of by saying, your reply has no rebuttle against mine. I was just talking about compression ratio and octane levels. How come piston material came into the picture? I like this, don't get me wrong. A good technical argument is always welcome with me. I know my stuff.

 

Your reply states "circular / dimpled impressions" on the head. From what i know, tried and tested among one of the bikes here also, is not to "increase combustion efficiency because of managing the airflow". In fact, the point of these indentations are to create turbulence, which makes use of the Nitrogen (air is made up of up to 80% nitrogen) to aid in the combustion. As we all know, nitrogen doesn't burn, so these impressions or indentations aid in creating turbulence. This is where the we make use of nitrogen to make more power, through turbulence, because nitrogen doesn't burn.

 

As of piston, material makes a difference yes, and so does the teflon coating that comes on the skirt of some pistons. Coatings do increase power, increases response and increase reliability. Basically what coatings do is protect the piston and reduce friction. Coatings however don't reduce emissions. That still depends on a lot of factors but piston coating is definately not one of them.

 

However, i don't understand this -> " Basically getting a good air and fuel mix for efficient combustion. Moving the mixture closer to the plug for easier ignition. Reducing the distance between tip of plug and furthest pocket of mixture that needs to be burnt. Reducing events of uneven combustion / detonation of the mixture and better heat distribution."

 

I'm no guru too, but at least i know what works and what doesn't because i do my own bikes. Come for outings, it's been quite long since i had a good technical discussion with someone.

 

Other than that, i'm starting to doubt your resources. No offence bro.

 

 

hello guys~ let me know if i am doing to correct way ,

i run in on the factory enginer oil for 500km(below 100km/h & not to drag gear) then i change to mineral engine to run in for another 500km(can start to drag abit and whack the bike often to loosen up engine part) then change to fully synetic oic n change the oil at every 3000km??

i have been pumping V power for me bike ever since i took the bike. if anything i said is wrong pls correct me n i can i change my tires after my 500km mark to battlex?? wat is the best fully synetic engine for our spark??

 

Ah_Ben mentioned 20w40 or 20w50, which is okay but alot of people are running 10w40 to 10w60 for our bikes. Thinner oils don't run so smooth but it gets to your engine parts faster, so you get better protection at startup. I can recommend u liqui moly engine oil if you want Hehehe

[h4hahak1m]

Anyone can teach me? Which brand de big bore better?

And among all street legal is yoshi de best? And does swage do de brake hose

Specially for spark?

 

Custom 67mm forged CP piston complete with nitride coated rings and custom block with ceramic coating want? I can get for u, confirm nobody else using. Check out CP pistons website

 

http://www.cp-carrillo.com/Tech/PistonTech/tabid/74/Default.aspx

[FTW]

Google is everyone's best friend. But understanding content that comes from google is another. One simply does not put into practise just by reading without understanding. Ok so i start of by saying, your reply has no rebuttle against mine. I was just talking about compression ratio and octane levels. How come piston material came into the picture? I like this, don't get me wrong. A good technical argument is always welcome with me. I know my stuff.

 

Your reply states "circular / dimpled impressions" on the head. From what i know, tried and tested among one of the bikes here also, is not to "increase combustion efficiency because of managing the airflow". In fact, the point of these indentations are to create turbulence, which makes use of the Nitrogen (air is made up of up to 80% nitrogen) to aid in the combustion. As we all know, nitrogen doesn't burn, so these impressions or indentations aid in creating turbulence. This is where the we make use of nitrogen to make more power, through turbulence, because nitrogen doesn't burn.

 

As of piston, material makes a difference yes, and so does the teflon coating that comes on the skirt of some pistons. Coatings do increase power, increases response and increase reliability. Basically what coatings do is protect the piston and reduce friction. Coatings however don't reduce emissions. That still depends on a lot of factors but piston coating is definately not one of them.

 

However, i don't understand this -> " Basically getting a good air and fuel mix for efficient combustion. Moving the mixture closer to the plug for easier ignition. Reducing the distance between tip of plug and furthest pocket of mixture that needs to be burnt. Reducing events of uneven combustion / detonation of the mixture and better heat distribution."

 

I'm no guru too, but at least i know what works and what doesn't because i do my own bikes. Come for outings, it's been quite long since i had a good technical discussion with someone.

 

Other than that, i'm starting to doubt your resources. No offence bro.

 

 

 

 

Ah_Ben mentioned 20w40 or 20w50, which is okay but alot of people are running 10w40 to 10w60 for our bikes. Thinner oils don't run so smooth but it gets to your engine parts faster, so you get better protection at startup. I can recommend u liqui moly engine oil if you want Hehehe

 

Why no 15w! Huhuhuhu.

 

Custom 67mm forged CP piston complete with nitride coated rings and custom block with ceramic coating want? I can get for u, confirm nobody else using. Check out CP pistons website

 

http://www.cp-carrillo.com/Tech/PistonTech/tabid/74/Default.aspx

 

See you later about this. Kecoh.

[h4hahak1m]

Why no 15w! Huhuhuhu.

 

 

 

See you later about this. Kecoh.

 

http://www.liqui-moly.de/liquimoly/produktdb.nsf/id/en_4strokefullysynthetic_nt0001f5da.html?Opendocument&land=GB&voilalang=e&voiladb=web.nsf

 

They don't have 15 bro. Only 5w-40, 10w-50 and 10w60. So says official webbie.

 

And i didn't tell u abt the ceramic cylinder ah? Oops.

[h4hahak1m]

Why no 15w! Huhuhuhu.

 

 

 

See you later about this. Kecoh.

 

http://www.liqui-moly.de/liquimoly/produktdb.nsf/id/en_4strokefullysynthetic_nt0001f5da.html?Opendocument&land=GB&voilalang=e&voiladb=web.nsf

 

They don't have 15 bro. Only 5w-40, 10w-50 and 10w60. So says official webbie.

 

And i didn't tell u abt the ceramic cylinder ah? Oops.

[FTW]

http://www.liqui-moly.de/liquimoly/produktdb.nsf/id/en_4strokefullysynthetic_nt0001f5da.html?Opendocument&land=GB&voilalang=e&voiladb=web.nsf

 

They don't have 15 bro. Only 5w-40, 10w-50 and 10w60. So says official webbie.

 

And i didn't tell u abt the ceramic cylinder ah? Oops.

 

You said 66mm!! 1mm many diff ley!

[charlxx]

I went to speedy motors at amk auto point. Anyway now there's like a knocking sound when I ride. I told the mech and he like doesn't give a ****, not heading back there anymore. Anyone know what seems to be the problem. The knocking is like 1.5 second every interval. Sometimes there's the sound, sometimes there isn't.

[kaii69]

Custom 67mm forged CP piston complete with nitride coated rings and custom block with ceramic coating want? I can get for u, confirm nobody else using. Check out CP pistons website

 

http://www.cp-carrillo.com/Tech/PistonTech/tabid/74/Default.aspx

 

 

 

How Much bro?

How about de cam clutch plate valve spring all? Haha

Pm me can? This is interesting

[Ken85]

Hi anyone can help me wats the purpose of installing fast throttle? Any brand that is good? Any recommendations? Thanks...

[georgekoh]

Hey guys, I've got question regarding this bike.

I'll be taking over a stock spark soon.

Any recommendations on modifications or keep it stock?

Also, I want to install a box. How many litres u guys recommend?

[FTW]

Hi anyone can help me wats the purpose of installing fast throttle? Any brand that is good? Any recommendations? Thanks...

 

I suggest that if you don't know how it works, just keep it stock.

 

 

 

 

 

Hey guys, I've got question regarding this bike.

I'll be taking over a stock spark soon.

Any recommendations on modifications or keep it stock?

Also, I want to install a box. How many litres u guys recommend?

 

Get an aftermarket exhaust. As for the box, a 35 litre one should be fine.

 

 

 

Sent from my HTC Sensation Z710e using Tapatalk

[hellcloud164]

Kindly read the owner manual prior to operation the machine. It will teach you how to run in your engine as well as periodical preventive measures required for your motorcycle. It will even state the requirements/specification of the engine oil, fuel and etc.

 

Engine Oil:

Type: SAE20W40 or SAE20W50

Recommended engine oil grade: API service SF, SG type or higher. JASO MA

 

The owner manual is usual found in the storage compartment within the motorcycle. Alternatively, you may download a copy from the below link.

http://www.scribd.com/doc/24733157/Yamaha-T135-Owners-Manual

 

Has Anyone tried hard run in to our engines before?

http://www.mototuneusa.com/break_in_secrets.htm

[Ken85]

One of my friends ask me to change to fast throttle... Coz i juz change my cdi n pipe, so he ask me to change to fast throttle for more pick up/performance.. I actually know wats the purpose of fast throttle but juz

Want some advise... That all...

[FTW]

One of my friends ask me to change to fast throttle... Coz i juz change my cdi n pipe, so he ask me to change to fast throttle for more pick up/performance.. I actually know wats the purpose of fast throttle but juz

Want some advise... That all...

My advice will be that it's not needed as you are on a stock carb.

[Ken85]

My advice will be that it's not needed as you are on a stock carb.

Alright thanks...

[georgekoh]

I suggest that if you don't know how it works, just keep it stock.

 

 

 

 

 

 

 

Get an aftermarket exhaust. As for the box, a 35 litre one should be fine.

 

 

 

Sent from my HTC Sensation Z710e using Tapatalk

 

 

My mech said i might want to get an adjustable CDI and get yoshimura exhaust.

So may I know what does the exhaust do to the machine?

Does it make the performance better?

By the way, tri-oval or round cone?

[Ken85]

Any motor shops open today?

[FTW]

My mech said i might want to get an adjustable CDI and get yoshimura exhaust.

So may I know what does the exhaust do to the machine?

Does it make the performance better?

By the way, tri-oval or round cone?

 

Makes your bike lighter because the stock one is heavy, that is for sure.

 

Sent from my HTC Sensation Z710e using Tapatalk

[sparkyben]

My battery is getting weak. Any battery to recommand and whats the price? Koyoko isit good??

[charlxx]

My battery is getting weak. Any battery to recommand and whats the price? Koyoko isit good??

 

I changed koyoko at 85RM. Still serve me well.

[sparkyben]

I changed koyoko at 85RM. Still serve me well.

 

Dry cell or wet cell?

[kaii69]

Any motor shops open today?

 

Yes. Ram racing .. Beside Motoworld .. Or HKL

[charlxx]

Dry cell or wet cell?

 

Not sure about this. Or just go for the stock one.

[faisal910]

Hey guys, do u guys noe the best price to get yoshi tri oval can get.?? Or u guys want to sell it..let me noe a.a.s.a.p ok..i needed so badly..