Honda Cbr150

[dave_boo]

Ok, I've pinged Goodspeed and got some information regarding parts.

- 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 to Nakhon Sawan 200thb

All in all fairly reasonable prices. Let me explain my choices. If I'm going over-sized on the cylinder, I may as well go all the way! The muffler I just liked the looks of. I am concerned about the carb being big enough, but time will tell. If push comes to shove, I suppose I'll have a brand new carb to sell after I get the proper sized carb. Jets, I'm not sure if the salesman understood 'assorted', but hopefully they send a nice variety to get the machine running well. New sprockets, front and rear and a new chain are needed since I have over 11 000 km without changing them. They're not in bad shape, but while I have everything broken apart I may as well replace them with something that should provide a higher top speed and cruising speeds at a lower RPM. I am very impressed that EMS is only going to be 200 thb!

There are several items I'll need to purchase though. Most likely I'll go to Honda and buy them. First up will be a NSR 150 throttle required for the longer pull that the new carb's lever requires (the PE28 is a stock NSR item). Also want to purchase a NSR coil and wire. A complete engine gasket set is going to be added, and I need to find out where I can get a K&N filter. Stock tyres HAVE to go! Still searching for Dunlops or Bridgestones in the correct, or wider, sizes. Proper tools, i.e. a quality torque wrench etc are on the shopping list.

The wait will be quite a test, as will trying to keep the family from taking it to some shadetree mechanic to get it done for me. Sometimes the family can be too helpful.

**edit to include pictures you could click on and see a bigger picture**

Edited September 1, 2008 by dave_boo

[PeaceBlondie]

dave, good luck on the engine rebuild. I never did it partly because I know no trustworthy mechanic. Also, by the time I thought of it, my original 2003 bike had about 40K on it. I have no trouble having a local and trusted mechanic install a swingarm or tire, but those internal mods scare me.

[dave_boo]

dave, good luck on the engine rebuild. I never did it partly because I know no trustworthy mechanic. Also, by the time I thought of it, my original 2003 bike had about 40K on it. I have no trouble having a local and trusted mechanic install a swingarm or tire, but those internal mods scare me.

Thanks for the encouragment. Last time I'd rebuilt a single cylinder was ~1995. I've built up other motors since then, with my favourite project having been my Z28's 5.0L. I'll obviously keep a photo log of the happenings.

[CanadaNorm]

How is the CBR150 with a heavier load? Does it have the power to travel safely with two adults on board? If you are going to travel with two people, should you upgrade any of the parts (perhaps I should plan for a heavier suspension)?

[PeaceBlondie]

I weigh 90 kilos, and usually wear a backpack. A stereotypical Asian passenger does not overload the bike. Nok Lek earned his nickname and became airborne when we hit that dog, and we were doing a border run through the mountains. Also made a run to MaeHongSun with a 165 cm tall Thai on board. No problem.

But if you and the passenger are putting 170 kilos on a bike, no bike under 200 cc is going to go like wildfire through the mountains.

PB IS ON THE CBR AGAIN! The shop finished the repairs today and it was far easier than we feared. Even the tail cowling needed no replacement, although both fallopan tubes or swingarms are new.

[dave_boo]

I weigh 90 kilos, and usually wear a backpack. A stereotypical Asian passenger does not overload the bike. Nok Lek earned his nickname and became airborne when we hit that dog, and we were doing a border run through the mountains. Also made a run to MaeHongSun with a 165 cm tall Thai on board. No problem.

But if you and the passenger are putting 170 kilos on a bike, no bike under 200 cc is going to go like wildfire through the mountains.

PB IS ON THE CBR AGAIN! The shop finished the repairs today and it was far easier than we feared. Even the tail cowling needed no replacement, although both fallopan tubes or swingarms are new.

Good to hear you're back and on your bike. Please don't let anyone else run into you!

I had mentioned the fact that the CBR is very narrow before based on my experience dropping it on the track. Looking back, since they don't offer the mettalic yellow version anymore, it probably wasn't a good idea for me to use it for racing....

[Crow Boy]

Flash:I just met a guy with a blond pony tail who says he is Peace blondie.I thought he was older.Anyway, he says he got his black 2008 cbr150 out of the police shop and they are rebuilding it.Is this news?

He is older but yes that is his ponytail

Good news that he is rebuilding it - will be good to see him back on the road

CB

[PeaceBlondie]

Okay, I am not Peter Pan. I got the bike back, but the master cylinder was cracked on the bottom, where the front of the bike landed in the grass. Took a week for dealer to get new brake cylinder! I think it is all fixed now, and looks unfazed. But my two months on a Yamaha 135 humbled me. The CBR is only a 150. Today, I had a drag race down the wrong long klong with a light kid on his tricked-out Spark 135. He kept up with me until the insane speed made me chicken out. He must have boosted it to higher power. I had not street dragged since I had an Austin Healey with a Corvette V8.

[steveyk949]

hi all just bought myself a 2007 black cbr with 5k on the clock. It has a racing cdi, k&n air filter and dbs exhaust, wanted a service but not many garages want to touch it? I live in the ramkhampaeng area bangkok and i spoke to red baron and a few other various garages around here but all said no so i took it 2 a side street garage that mainly does tires and directed him to change my oil so got fresh oil but not sure if he's got the proper tools to service it. So was wondering can any1 recommend me a decent garage close to where i live, also wanted to upgrade my stock tires to bigger ones,can any1 advise me on the sizes i can upgrade without changing the original wheels or modding anything else.

steve

[PeaceBlondie]

I usually use big Honda dealers, but have had my oil changed at a Suzuki franchise and at a roadside shop near midnight. Just use high quality oil. I like dealers with a full tech staff. The CBR is no stranger to the big shops.

I switched my front tire to a Dunlop TT, 90/80, no problem. I expect you can go 10 mm wider on the back as well.

[thaicbr]

hey guys what kind of modifications have you got on your cbr150's.

i'm running a full endurance exhaust (very, very loud) 1 tooth down on the front sprocket (sonic) and michelin sporty 100/80/17 front and 130/70/17 rear.

it can cruise at 115-120 and tops out at 140kmh but i am a very portly 112kg.

gonna change the back tyre down to 110/80 becausethe 130 robs to much speed (if your lighter no major problem)

so what has every one else got (dave boo hows your mods going)

ALLAN

[steveyk949]

thx pb. Forgot to say previous owner changed 1 of the sprockets for better top end but not sure which 1. Ok thinking of 90/80 front and 120/80 rear looking for rainy tires as the originals abit slippery when wet, almost fell off twice whilst it was raining with those dam_n pot holes, but that migt be due to my riding experience as only had bike under a week and never drivin a 6 gear with clutch b4, 1st day practice was picking it up in post office and riding it back to my appartment in traffic

[thaicbr]

stevey go for the michelin sportys 100/80 front and 110/70 rear.

what sort of top speed do you get and is it smooth power delivery. i'm thinking about the cdi cos i hit the rev limiter in 1st and 2nd.

also how louds the dbs exhaust.

allan

Edited September 15, 2008 by thaicbr

[oMega69]

Thai bikes do not usually have oil filters! The CBR150 has none. I could not convince my roommate to even ask the dealer about synthetic oil.

hi peaceblondi,

thanks for yr reply, that goes for u too croboy.how did u recover from yr crash peaceblondie???

i found a really nice oil dealer today in chonburi. i couldn't believe the selection of fully synthetic oils he had. i went to about 10 gas stations and 15 motosai shops in bangkok in the hope to find some mobile 1 or shell rotella last weekend. eventually i ended up with a liter of veloil ( i never heard about it before) which i bought at a rim dealer for 450 baht.

the shop in chonburi has mobile 1, delron or delvon by mobile 1, castrol and ptt and one more shich name i can't remember. he wants only 1600 to 1800 baht for 4 liters. last time in bkk the mobile 1 was 2400.

the shop is extremely east to find. when u drive into chonburi city from pattaya, past carrefour, big c and tesco u just go straight ahead. after maybe 2 km past tesco u'll see a big castrol sign (2x1.5 meters) on the left side at a height of about 2,5 meters from the ground right bside the street. u really can't miss it.

@ crowboy, where in pattaya r u to find? i have a friend in pattaya that i go see twice a month. i'm interested in a longer bike tour maybe in october

Thanks for the information . i was hunting for good full synthetic oil around Pattaya with no luck. My bike has now 1030km so my first service.. but what SAE should the oil have?

And is also time for a new exhaust what brand is to rekommended? was looking for yoshimura but cant find. . any shops in Pattaya area with exhaust for cbr . . . ?

Edited September 15, 2008 by oMega69

[dave_boo]

hi all just bought myself a 2007 black cbr with 5k on the clock. It has a racing cdi, k&n air filter and dbs exhaust, wanted a service but not many garages want to touch it? I live in the ramkhampaeng area bangkok and i spoke to red baron and a few other various garages around here but all said no so i took it 2 a side street garage that mainly does tires and directed him to change my oil so got fresh oil but not sure if he's got the proper tools to service it. So was wondering can any1 recommend me a decent garage close to where i live, also wanted to upgrade my stock tires to bigger ones,can any1 advise me on the sizes i can upgrade without changing the original wheels or modding anything else.

steve

As others have mentioned, just take it to a larger Honda dealership. They'll know what to do with it. One thing I do worry about with going too large with the tyres is the fact that the stock rims are so narrow. I would think that a lot of the advantages that a larger tyre offers would be offset if the they're pinched into a rim that't too narrow.

hey guys what kind of modifications have you got on your cbr150's.

i'm running a full endurance exhaust (very, very loud) 1 tooth down on the front sprocket (sonic) and michelin sporty 100/80/17 front and 130/70/17 rear.

it can cruise at 115-120 and tops out at 140kmh but i am a very portly 112kg.

gonna change the back tyre down to 110/80 becausethe 130 robs to much speed (if your lighter no major problem)

so what has every one else got (dave boo hows your mods going)

ALLAN

The mods will NOT begin untill I get home from overseas. I am extremely uneasy about a trained monkey going to town on that major of an undertaking without supervision (and no, I don't trust my wife to oversee it either).

Also, according to my gearing chart, it's not the weight that's restricting your top end, but rather the gearing. Going down to a 14 tooth front sprocket robs you of 10 km/h indicated. Had you gone up to say a 16 your top speed would then be 161 km/h and a 17 tooth takes you up to 171.

Just out of curiousity, where did you buy those tyres?

steveyk949, going with a 120/80 tyre will get you 153 km/h(15 tooth), 163 km/h(16 tooth), or 174 km/h (17 tooth). This is of course assuming stock rear sprocket, 11 500 RPM tops, etc. So going larger on the front sprocket and smaller on the rear will increase top end at some expense to acceleration. Unfortunately the CBR 150R came with a 44 tooth rear sprocket and I have yet to find any replacements* with FEWER teeth than that, so the best we owners can do is to change the front to increase our top end.

*my sister in law works for a company that has an EDM. Basically it's a milling machine that uses arc welder technology to 'burn' away the shape from electrically conductive material. If there was enough demand, I could probably order some custom sprockets from her company.

Edited September 15, 2008 by dave_boo

[steveyk949]

top speed not sure as i use it mostly in traffic to and from work so not many open roads but got 120 with ease not sure wot gear or rpm as i was making sure i did'nt fall off but the mods seemed to have made it abit more pokey through the gears so the bike seems to rev up much faster, the dbs exhaust (repacked can) has made the bike sound deeper and fairly loud above 5000rpm so when i see the police i'm usaully in 2nd 3rd or 4th at 2000-3000rpm which is not too bad. A phantom or harley replica went past me the other day in car park and that was much louder so not sure if their legal? 100/80 front and 110/70 rear is that a good size combination? cos the stock rear is 100/80... I'm a complete novice when it comes to bikes as i was a car man back home.

steve

[thaicbr]

dave boo. the reason i went down on the front is because i dont think with the standard power of the cbr you can easily achieve these speeds. and i would prefer usable power eg: cruise at 120 with power to overtake up to 135ish 6th gear 9000rpm.

if you go on the jt sprockets website you might be able to match the rear sprocket and get smaller or larger( they have good pictures) sprockets are cheap so i might try the larger one anyway or back to stock.

also beware the endurance small oval muffler it is very very very loud.

when are you back in thailand.

tyres were from a place here http://www.geocities.com/bkkriders/shops/index.html but can't remember which one. might have a card at home check later.

Edited September 16, 2008 by thaicbr

[PeaceBlondie]

Just wondering about bigger tires. Having a larger diameter (rolling radius) on the front would correct some of the odometer error, decreasing the indicated speed by a few percent. 80/90 and 90/80 have the same diameter, but 100/80 ...maybe about the same? Then a 130/70 on the back - would that give you taller gearing,as well? Anyway, I agree with Dave Boo that the rims may be too narrow.

As for taller gearing, from changing sprocket sizes and increasing tire diameters - is 17 hp going to get you up to true speeds of 160?

I hear of 2000-3000 rpm being used - I never let it drop to 3000. It is designed for 6000 and above.

It is a great little bike. Repeat: little.

[dave_boo]

dave boo. the reason i went down on the front is because i dont think with the standard power of the cbr you can easily achieve these speeds. and i would prefer usable power eg: cruise at 120 with power to overtake up to 135ish 6th gear 9000rpm.

if you go on the jt sprockets website you might be able to match the rear sprocket and get smaller or larger( they have good pictures) sprockets are cheap so i might try the larger one anyway or back to stock.

also beware the endurance small oval muffler it is very very very loud.

when are you back in thailand.

tyres were from a place here http://www.geocities.com/bkkriders/shops/index.html but can't remember which one. might have a card at home check later.

It's quite possible that you're correct about the CBR not having enough power to obtain those top speeds listed earlier-espeically with us "larger" Westerners on it.

The problem with you wanting crusing speed with enough power to overpass is that below 8 000 RPM the CBR isn't suited for it. So if you don't want to downshift, you're going to have set your gearing so at a minimum you are going 8 000 RPM in sixth. With your specs, that means that you will need a 16 tooth front and 44 tooth rear. And if you're wanting to go 135 at 9 000 RPM you'll need 17/44.

I can't figure out how to export this spreadsheet to this forum, so just go ahead and look it over. It is based on the '06 model's 15/44 set up and lists the torque gain/loss. Or if you change the +/- on the "Torque +/-" to the opposite value it will give you the increase or decrease percentage over the stock speed.

Gear_Ratio.xls

Just wondering about bigger tires. Having a larger diameter (rolling radius) on the front would correct some of the odometer error, decreasing the indicated speed by a few percent. 80/90 and 90/80 have the same diameter, but 100/80 ...maybe about the same? Then a 130/70 on the back - would that give you taller gearing,as well? Anyway, I agree with Dave Boo that the rims may be too narrow.

As for taller gearing, from changing sprocket sizes and increasing tire diameters - is 17 hp going to get you up to true speeds of 160?

I hear of 2000-3000 rpm being used - I never let it drop to 3000. It is designed for 6000 and above.

It will correct speedo drift, but if my -9% at 140 km/h is correct, you'd have to get a tyre in the 100/90 range to even get close to correcting the drift on the speedo compared to using stock tyres.

And yes, going up to a 130/70 increase your gearing by some 4%. If you do that, you can get away going up to a 46 tooth rear sprocket and keeping the same gearing.

I think that the 17 HP should be able to get up to 160 KPH. It will take a while, but even with my fat ass I've gone an indicated 155 (with an assumed 9% drift 141 km/h). With the correct gearing I'd think that it would eventually reach a real 160 (175 km/h indicated).

[steveyk949]

thx for help guys gona check some prices on some tires on weekend, oh and like to say the original exhaust weighed a guesstimate 10kg and the dbs system was around half that and the original airbox was alot heavier than the tiny k@n so the later mods are less restrictive and less weight.

steve

[thaicbr]

as stevey said the stock exhaust is where most of the restriction is. stevey if you get time i wouldnt mind seeing your bike. especially the filter setup.

dave i agree with some easy mods,stock or near stock tire sizes and a smaller rider the cbr150 will easily achieve 160kmh with enough road.

as i've said i do not reccomend the 130 rear. i think a 110 would be better. good grip but a narrower footprint. racing honda rs125's use 110 rear with a 90 or 100 front. even the sexy new kawasaki ninja only uses a 130 as stock. mind you i would be tempted to up that to a 140 on the ninja.

also stevey got a number for tyres 02 223789 or 02 238214 same shop guy speaks english and knows his tyres. i think i got the cbr250 tyres here. but he should have the michelins as well if not, get bridgestone bt39ss another great very grippy tyre not sure of the sizes though. dont go for a 130.......rear

any way.... thats all folks

Allan

Edited September 16, 2008 by thaicbr

[thaicbr]

also i have just ordered some gear from the states. cheap mesh jacket, boots etc if you want to add to the order and save on delivery contact me soonest. web site i ordered from is newenough.com check out the close outs and the bargains.

you can tell me mum was scottish, i do love a bargain. lol

[dave_boo]

also i have just ordered some gear from the states. cheap mesh jacket, boots etc if you want to add to the order and save on delivery contact me soonest. web site i ordered from is newenough.com check out the close outs and the bargains.

you can tell me mum was scottish, i do love a bargain. lol

I've found this one for 44 000 THB. Really tempted to the point I'm going to call the wife to get her to talk to him. Not wild about the colour though......

I'd really like to have someone check it out before I buy it, but since I'm not back in Thailand untill November, I may have to buy it sight unseen; don't want anyone else snapping it up. Also, at less than 1 300 USD, it won't impact my bottom line too much.

[moo9]

also i have just ordered some gear from the states. cheap mesh jacket, boots etc if you want to add to the order and save on delivery contact me soonest. web site i ordered from is newenough.com check out the close outs and the bargains.

you can tell me mum was scottish, i do love a bargain. lol

Hi, you will import stuff by yourself or will somebody take it for you?

[thaicbr]

moo the stuff is coming in us post service.

dave that looks like orange pearl ...i like it. depends on where it is can have a look or get one of the mechanics to check it out. i'm in nakhom pathom. and dont worry i wont have it cos i'm potless after fixing my bike and ordering the riding kit lol

allan

[dave_boo]

moo the stuff is coming in us post service.

dave that looks like orange pearl ...i like it. depends on where it is can have a look or get one of the mechanics to check it out. i'm in nakhom pathom. and dont worry i wont have it cos i'm potless after fixing my bike and ordering the riding kit lol

allan

awwh, well at least I don't have to worry about you! Just every other forum member or mocyc reader that's interested in it. I'm calling my wife to have her call the seller as soon as this post is up; hopefully it's still there. Only 2,5 hours from our house, I suppose the wife could drive and pick it up. Either way, if you are able to go on the ride I'm planning, you'll either see me on a yellow CBR 150R or an orange CBR 250....

[thaicbr]

dave i'm ok for the ride out but just not sure if i can do the whole trip. i would get the bikeif i were you because at the end of the day most service and repair is cheap here, the problem is finding good mechanics. but hopefully this time i've found them. and that fairing kits about 4000baht on its own.

allan

[dave_boo]

dave i'm ok for the ride out but just not sure if i can do the whole trip. i would get the bikeif i were you because at the end of the day most service and repair is cheap here, the problem is finding good mechanics. but hopefully this time i've found them. and that fairing kits about 4000baht on its own.

allan

Well, after a bit of persuasion (I ended up having to promise the wifey a new chain; when is enough gold enough?) I got the ol' ball and chain to give the guy a call. Turns out that it is currently in the shop; something about water getting into a system(wife isn't technically inclined she mentioned the engine) during a ride. So, I'll probably end up having to go over the electricals after purchase.

She's promised to take a friend of the family who's fairly proficient in motorcycles along. And no, I'm not worried if for no other reason than he likes kateoys (but that's a WHOLE 'nuther story!). If everything checks out, and it has its books, she has the green light to drop the cash on it.

[thaicbr]

be careful get the friend to ask about the radiator because these are prone to blowing headgaskets. not a hard job to fix if the shops good.

but a bastard if they not.

the silly bugger who rebuilt the old engine decided to make the head gasket himself out of gasket material. and when i checked original to the crap that came out another owner had put aliminuim plates between the old gasket. as i have said before SOME thai mechanics actually make more problems than they cure lol

allan

ps i have an new honda original head gasket and oil filter in stock if ya need them.

ALSO the bike kit is already on its way. dam_n fast service

Edited September 17, 2008 by thaicbr

[dave_boo]

be careful get the friend to ask about the radiator because these are prone to blowing headgaskets. not a hard job to fix if the shops good.

but a bastard if they not.

the silly bugger who rebuilt the old engine decided to make the head gasket himself out of gasket material. and when i checked original to the crap that came out another owner had put aliminuim plates between the old gasket. as i have said before SOME thai mechanics actually make more problems than they cure lol

allan

ps i have an new honda original head gasket and oil filter in stock if ya need them.

ALSO the bike kit is already on its way. dam_n fast service

Thanks for the information and the offer. Speaking of which, I've been preusing the web and it looks like finding quality items for this bike is going to be a problem. For instance IRC doesn't offer rubber in the correct size. And looking on denniskirk.com quickly dashes my hopes in finding inexpensive 110/70 140/60 tyres.

For shits and giggles, I'm putting up a dyno chart I've found. It documents the difference that simply making sure your carbs are in good condition makes. Even with that, there's some curious valleys when on power; I read that it is corrected by going with an aftermarket CDI or messing with the signal from speedometer.