More Cc For Cbr 150

[SM7WGP]

:D Edited March 13, 2008 by SM7WGP

[SM7WGP]

ASEAN MOTO has new bigger bore up kits fore the CBR 150

up to 195,6 cc

http://www.aseanmoto.com/main.html

[PeaceBlondie]

That is a big bore, and a far longer stroke. Normally I think of a monoblock with several cylinders, such as a water-cooled car engine. I suppose that if you buy an entire cylinder assembly, you do not have to worry about bore centers, etc. Or do you? 195.6cc equals 66 x 57.2 mm., as compared to the normal 47.2 mm. stroke. Being a math(s) teacher, I checked, and agreed it is 195.6 cc. Wow!

Could somebody please get a price list from Asean Moto for these parts, and ask them to turn off the audio on the website?

[SM7WGP]

That is a big bore, and a far longer stroke. Normally I think of a monoblock with several cylinders, such as a water-cooled car engine. I suppose that if you buy an entire cylinder assembly, you do not have to worry about bore centers, etc. Or do you? 195.6cc equals 66 x 57.2 mm., as compared to the normal 47.2 mm. stroke. Being a math(s) teacher, I checked, and agreed it is 195.6 cc. Wow!

Could somebody please get a price list from Asean Moto for these parts, and ask them to turn off the audio on the website?

I agree with you the sound is terrible, but I called before x-mas and the complete 176 cc was 33k Baht

[submaniac]

OK, before I say anything, I will add this proviso: I like the CBR. It is a nice looking bike, well made, and has electric start.

But Geez, for 33k Baht, if what you want is more power just sell the CBR and buy an NSR or other two stroke. The irony is that the model that the CBR replaced actually made nearly twice the horsepower. The CBR is about 22 hp, while the NSR made about 35-40 hp:

http://en.wikipedia.org/wiki/Honda_NSR150SP/RR

For comparison, a bone stock Harley 883 sportster makes about 50-55 hp:http://www.nightrider.com/biketech/hplist_evo_sporty_stock.htm

(and yes I know that the lower hp is because Harley puts low output pipes and other emissions stuff from the factory, and to get more HP you need the 'screaming eagle' stuff!)

2 stroke baby, 2 stroke!! Where is Thanh-BKK when you need him?

[SM7WGP]

OK, before I say anything, I will add this proviso: I like the CBR. It is a nice looking bike, well made, and has electric start.

But Geez, for 33k Baht, if what you want is more power just sell the CBR and buy an NSR or other two stroke. The irony is that the model that the CBR replaced actually made nearly twice the horsepower. The CBR is about 22 hp, while the NSR made about 35-40 hp:

http://en.wikipedia.org/wiki/Honda_NSR150SP/RR

For comparison, a bone stock Harley 883 sportster makes about 50-55 hp:http://www.nightrider.com/biketech/hplist_evo_sporty_stock.htm

(and yes I know that the lower hp is because Harley puts low output pipes and other emissions stuff from the factory, and to get more HP you need the 'screaming eagle' stuff!)

2 stroke baby, 2 stroke!! Where is Thanh-BKK when you need him?

2T = air pollution need I say more

[Richard-BKK]

So far as I know is the Honda CBR150 only capable (stock) of producing 15 to 17 horsepower. I can of course make a mistake

[PeaceBlondie]

Unless it has been put on a dynamometer, we do not know the horsepower.

I could have bought an NSR150 with about 28 hp a couple of years ago for 12k baht, (it had a CBR150R fairing!), but I passed it up. I like to buy new bikes with warranties.

But darn, if it costs 33K just for the smaller kit (176), and surely you need a large carb for that much more displacement, it is not worth it to fix up my old 2003 bike with high mileage.

[SM7WGP]

Unless it has been put on a dynamometer, we do not know the horsepower.

I could have bought an NSR150 with about 28 hp a couple of years ago for 12k baht, (it had a CBR150R fairing!), but I passed it up. I like to buy new bikes with warranties.

But darn, if it costs 33K just for the smaller kit (176), and surely you need a large carb for that much more displacement, it is not worth it to fix up my old 2003 bike with high mileage.

After the replacement of new parts you have a new engine, and about the carburetor of course a bigger one is better but clanging a few injectors will do the trick also.

Of course a new bike is always a new bike, but even if we get older we are still boys that want to play .

[submaniac]

So far as I know is the Honda CBR150 only capable (stock) of producing 15 to 17 horsepower. I can of course make a mistake

Wow. So the older bike makes nearly 3 times the horsepower of the new CBR? I feel sorry for those 4 stroke owners!

[SM7WGP]

Its not about the horse power, its to have something different

If we wanted horse power then its better to by a big bike with lots of muscle effect

you know its not always about the size

Edited March 13, 2008 by SM7WGP

[submaniac]

Its not about the horse power, its to have something different

If we wanted horse power then its better to by a big bike with lots of muscle effect

you know its not always about the size

Completely understand your sentiment. However, if big bikes were cheap and plentiful, I would have just bought one. But since this is Thailand, and I would be stuck with a small cc bike, might as well have a small cc bike that makes power approaching that of the big bikes. And there is something just fun about having a little bike that makes pretty good horsepower.

[Thanh-BKK]

Hi

I saw blue smoke around this one, and i thought - there must be some two-stroke talk, and here i came flying So yeah, it's about the good old 2 vs 4

First of all, there is no replacement for displacement. Harleys make the same horsepower that you can squeeze out of a 125cc two-stroke, BUT the Harley still has a hel_l of a lot more "umph" to it - called "torque". It's the same stuff that keeps a truck with 20 tons and a pathetic 200 horsepowers moving. Try to load 20 tons on a BMW 5er with 200 horsepowers! You won't get anywhere with it.

Or see F1 - close to 1.000 horses out of 2.4 liters, not bad. But close to zero torque - those won't go up Doi Suthep!

Now the "Big Bore" kit for the CBR is 1) way overpriced and 2) legal? Plus, will the rest of the engine (crank shaft!) handle the additional power? As i know, the CBR is a good all-round bike which can do quite some miles without needing repairs - i wouldn't be so sure that it still can do so when the "big kit" is on.

Now the NSR is a wild bike - again, little torque, you always keep them revving, as with all high-powered two strokes. In Germany i had once a road race, me on a 175cc Zuendapp with stock 17 horses, him on a tuned-up Aprilia RS 125 Extrema with a claimed 33 horses. I still won. Why? Torque. My Zuendapp's engine characteristics was that of a buffalo - actually comparable to a Harley, with lots of pull out of the basement. That Aprilia didn't move below 8.000 rpm, the point where my Zuendapp was done already. So all those horses didn't help the fella and after the race i explained to him that altough my bike weighs as much as two of his', it will always smoke his yoghurt cup due to the fact that i have the power of the buffalo, and along with a long transmission, the speed to it.

Plus riding a bike that you constantly have screaming isn't for everyone - some prefer a comfortable cruising, and those high-powered ones are not capable of that.

And who says "2t = pollution"? Dear, i currently ride my beloved Yamaha RXZ, a 135cc two-stroke, at less than 3 liters per 100 km. That's less than the average Honda Click 100cc four-stroke. And i go a good bit faster than those while i'm at it, 160 real top speed. You'll see smoke coming from my exhaust only during the first few minutes after starting the cold engine in the morning. I rather get to the office with the bike than with my car - as i can do so in 40 minutes compared to almost 2 hours it would take me sitting in traffic jams in the car. Now which one is better for the environment, 40 minutes on a two-stroke or two hours in a 2.000cc car? And no, i will NOT buy a new bike because mine runs fine, i love it, and i prefer two strokes anyway (apart from the Honda Super Cub, i really want one of those as a second bike).

And my Yamaha, in case you wonder, DOES the comfy cruise! A different exhaust makes sure of that. No screaming, just a gentle buzzing when i go across town at 90 KM/h and 5.000 rpm. If need be i am quickly up to 140-150 km/h and 9.000 rpm but if not required - then not I've got a loooong transmission on it and the ride is really nice.

@PeaceBlondie please, keep that CBR original - for the price of that "Big Bore" kit alone you'll get a decent racing type bike (a two stroke, of course! Such as the NSR or a Kawasaki Victor, those also run nice) and you can keep your CBR as faithful and mile-friendly as it is now.

With best regards......

Thanh

[wrathfultalon]

This kit would lower the RPM band do to the longer stroke but add torque so you would most likely be safe with crank.

Downside i imagine you would get some engine vibration since its not balanced for that piston/rod combo, worse fuel mileage and have to upgrade a slew of other parts..

Have to agree 2stroke!

[dotcom]

The CBR is about 22 hp, while the NSR made about 35-40 hp:

http://en.wikipedia.org/wiki/Honda_NSR150SP/RR

Man I feel bad. My CB400 makes I'm guessing about 50 HP.

I think I'll drive down to Pattaya & jump off a condo.

[CHdiver]

The CBR is about 22 hp, while the NSR made about 35-40 hp:

http://en.wikipedia.org/wiki/Honda_NSR150SP/RR

Man I feel bad. My CB400 makes I'm guessing about 50 HP.

I think I'll drive down to Pattaya & jump off a condo.

Safe yourself the trouble, Bangkok should have enough Highrisers.

[submaniac]

The CBR is about 22 hp, while the NSR made about 35-40 hp:

http://en.wikipedia.org/wiki/Honda_NSR150SP/RR

Man I feel bad. My CB400 makes I'm guessing about 50 HP.

I think I'll drive down to Pattaya & jump off a condo.

Can I have your CB400 after you have killed yourself?

Actually, Dave Boo found a dyno run on the NSR's which made 23 whp, so you should stomp all of us with your CB400.

[PeaceBlondie]

Has anybody here bought an Asean Moto bore kit or stroke kit, installed it successfully, and put in at least 10,000 trouble-free kilometers?

[moo9]

But Geez, for 33k Baht, if what you want is more power just sell the CBR and buy an NSR or other two stroke. The irony is that the model that the CBR replaced actually made nearly twice the horsepower. The CBR is about 22 hp, while the NSR made about 35-40 hp:

http://en.wikipedia.org/wiki/Honda_NSR150SP/RR

For comparison, a bone stock Harley 883 sportster makes about 50-55 hp:http://www.nightrider.com/biketech/hplist_evo_sporty_stock.htm

(and yes I know that the lower hp is because Harley puts low output pipes and other emissions stuff from the factory, and to get more HP you need the 'screaming eagle' stuff!)

2 stroke baby, 2 stroke!! Where is Thanh-BKK when you need him?

Yeah and then compare the sound of the NSR with a Sportster

[Thanh-BKK]

But Geez, for 33k Baht, if what you want is more power just sell the CBR and buy an NSR or other two stroke. The irony is that the model that the CBR replaced actually made nearly twice the horsepower. The CBR is about 22 hp, while the NSR made about 35-40 hp:

http://en.wikipedia.org/wiki/Honda_NSR150SP/RR

For comparison, a bone stock Harley 883 sportster makes about 50-55 hp:http://www.nightrider.com/biketech/hplist_evo_sporty_stock.htm

(and yes I know that the lower hp is because Harley puts low output pipes and other emissions stuff from the factory, and to get more HP you need the 'screaming eagle' stuff!)

2 stroke baby, 2 stroke!! Where is Thanh-BKK when you need him?

Yeah and then compare the sound of the NSR with a Sportster

Hi

Someone mentioned my name here????

Last week i got to stop right beside a brand-new 883 Sportster at a traffic light. 46 kilometers on the odo it had, white plate. DIGITAL odo, that is - on a HARLEY???? What happened to nice, solid, tractor technology??

Nevertheless, compared with THAT sound my ole RXZ two-banger sounds more decent, no BS. That Sportster was as stock as they come, and that weak "flop-flop-flop" it emitted.... nah, not for me. Even on take-off it didn't get any better - just a faster "flopflopflopflop". And during standing there, the engine jumped around in it's rubber mounts just like the one in my good old Zundapp KS 175 did - the difference being that the Zundapp had only it's engine and pipe jumping, while the Harley did it in a self-destructive way, the rear fender rattling louder than the exhaust making it's "flops" and the rider seemingly having problems keeping his hands on the grips.

If i had the choice between such Sportster and a NSR, boy, give me the NSR please. If you have to give me a Harley, make it one that's at least 35 years old.

Best regards.....

Thanh

[dave_boo]

Could somebody please get a price list from Asean Moto for these parts, and ask them to turn off the audio on the website?

I had been thinking about getting that kit, and here's the price list they emailed me:

Hello

- Extra Boreup Kit 195.6cc 39,500 thb

- DBS colour muffler Aluminum round muffler 4,600 thb

- Racing CDI Unlimited CDI 4,200 thb

- Racing carburator Keihin flatside 28 mm. out of stock

( Recommend Keihin PE28 mm 3,000 thb)

- Main jet assorted sizes 200 thb

- Slow jet assorted sizes 200 thb

- Racing chain No.415 850 thb

- Racing Sprocket T7 Alloy rear sprocket 45 / no.415 1,500 thb

- Racing Steel front sprocket 17 No.415 550 thb

- EMS mail to NakhonSawan 200 thb.

This kit would lower the RPM band do to the longer stroke but add torque so you would most likely be safe with crank.

Downside i imagine you would get some engine vibration since its not balanced for that piston/rod combo, worse fuel mileage and have to upgrade a slew of other parts..

Increased vibration would definitely be noticeable. Fuel economy would be affected, but with reports of 32 (PeaceBlondie) to nearly 40 (me!) km/L, there's plenty of wiggle room. Even if it cut out a 1/4 of the economy, you'd still be looking at a minimum of 24 km/L, or buying 4,2 L/100 km versus the 3.1 L/100 km with a stocker. I'm sure that extra 38 THB/100 km won't kill anyone......

Actually, Dave Boo found a dyno run on the NSR's which made 23 whp, so you should stomp all of us with your CB400.

Except the CB400 is one heavy mofo. It is much better suited for long range cruising though.

Yeah and then compare the sound of the NSR with a Sportster

Horses for courses. I love both sounds. However, they mean two different things to me. The deep rumble of the Harley is pure freedom of movement, the winding road that just begs to be conqured, and definitely the headlights pointed at the dawn (do my American roots show?) The NSR sounds much more like the winding up of a healthy race engine that is destined to spend its life pointed at curves, late breaking into corners attempting to carry speed through and having to fight the urgent on-rush of power as the RPMs build. Both stir emotional feelings, but for different reasons.

Thanh, it sounds like there was something ill with that Harley's engine.

[Thanh-BKK]

Hi

I'll be honest with you - i have no idea. i thought that that Sportster must have been 100% stock, fresh out of the show room or something like that, and they simply DO sound like that when they are new. "flop flop flop" is maybe a bad description, anyway it didn't really sound "Harley-ish", as it was almost inaudible.

My only ever Harley riding experience was on a much older, 1200, Sportster - which sounded way different (louder - of course, larger displacement but also stock pipes!) and vibrated just as bad, i lost a few parts during the day without noticing (no joke, really happened) but at least that one made a sound one can relate to "Harley".

Best regards.....

Thanh

[tonybroster]

Hi Dave,

interesting topic this enlarging a Cbr, as you have obviously put time & effort in & done some fact finding work, I have 1 question please ( its just out of interest sake )

Do you have any idea at all as to what capacity increase over the standard bore 150cc can be achieved by a straight over bore & piston change ( assuming such a piston actually exists ) & approximate cost of a bore & hone to size plus the piston & rings etc ?

This is without using the 195cc stroking kit etc which all sounds damm expensive in relation to the buying price of the bike new, from my previous occupation building 4 cylinder race/ competition car engines & depending on the cylinder block & the manufacturer we generally achieved an increase of between 100 to 400cc overall, this was without touching the strokes in any way, excluding any specialist piston cost that being fair varied a lot depending on what make of block was being bored the actual machining cost was minimal even if it was required to offset the bores.

regards, Bros.

[sinewave]

Being a former NSR150 rider, the CBR 150 and NSR 150 are not far apart in performance. Change the sprockets on the CBR and you will unleash the beast. Change the sprockets on the NSR and you will just be making more noise.

[thaicbr]

SINEWAVE. the nsr150 and the cbr150 are about 8 - 10 hp difference. if you can't notice the difference then the power valve wasn't working in your old nsr. there is a BIG difference.

AND Tony Broster you can go to about 166cc with an over bore but would really need to change the cams and carb to be worth it.

Allan

[tomartoh]

I cant imagine a CBR with new sprockets or whatever else keeping with my NSR150. She takes off like a cat on a hot tin roof when the revs pick up. Sounds good, looks good, and goes f.....g good too.

50+k bahts for a kit for the CBR is alot of money, could be spent towards something more exotic.