yamaha tzr125r

[jamie182861]

here is my pic off my bike is this one poper sp one

where best place buy parts

[-Matt-]

Not sure what year bike you have. Try the following for basic parts.

What is it you need exactly

https://www.wemoto.com/bikes/yamaha/tzr_125_r/93/ [1993]

https://www.wemoto.com/bikes/yamaha/tzr_125_r/94-96/ [1994-1996]

[Pete.]

proper SP one?

[jamie182861]

1993 model

so its a right sp then

[Timmeh]

Beat me to it Pete.

The only real differences between the SP and the 4DL is the airbox is bigger and the main jet is a different size.

The fiche I sent you contains all the part numbers for the 4DL, any Yamaha dealer can get hold of them, although be warned that they're nearly always special order and can take about a week to arrive as they come from europe.

Still, it's a tidy bike, so look after it. And don't give the popo any opportunity to pull you over, as you're blatantly going to be over the 14.5bhp limit.
____________________
GSXR400 x2 | '94 RVF400 | '93 TZR125 4DL (again)
20:22:30 BLUEX5: i would love to be forced to undergo a**l plugging with different sizes
20:48:18 Temeluchus: comp you hunk of smouldering homos3x you

[jamie182861]

yea dont worry i look after her u can see from pics

my mate does work for me

shes on 36hp

[Timmeh]

36? doubt it very much.

Standard 4DLs punt out 26hp and will just about touch the ton on a good day. SPs are several kilos heavier due to their longer, thicker swingarm and realistically only ever managed 30bhp despite the extra engineering Giladoni did on their barrels, although I never really understood why they decided to machine two extra holes in the powervalve.

Just by reading your other post it's running pre-mix and using a Wossner flat-top piston with a 4FU head... well good luck with that. VHSA carbs aren't designed to be run with pre-mix, they have a separate injector circuit and the correct piston for the SP is the Asso. On your piston the ring pins will run past the two extra exhaust ports. The 4FU head, whilst it will fit, isn't the correct one; the SP head has a differently-shaped combustion chamber.

Also I'm really not sure you're asking where to buy spare parts on what, if you believe the advert, is basically a brand-new bike. Also be aware that as that all the engine components have been mixed-and-matched you'll need to inspect the parts before so you get hold of the same ones.

<tl;dr>

There is a great deal of confusion regarding the TZR125 and it's wasn't helped by Yamaha and Belgarda (and other Italians) with their stupid numbers and looky-likey (but different) engine parts. So, just so this thread is educational for all, here's the correct info.

4DL - cases stamped 4DL, head and barrel stamped 3MB*. Domed piston
SP - cases stamped 4DL, head and barrel stamped 4DL. Flat-top piston

Only engines stamped 4DL were made by Moto-Minarelli. Everything else is Yamaha.

*; some 3MB heads were given additional porting work and are stamped with an additional P. These heads are also stamped Y1 or Y2 on the opposite side as they were bored out to the next size before being plated.

56.4mm is the standard bore; +0.25mm for Y1 and +0.5mm for Y2 barrels.

</tl;dr>
____________________
GSXR400 x2 | '94 RVF400 | '93 TZR125 4DL (again)
20:22:30 BLUEX5: i would love to be forced to undergo a**l plugging with different sizes
20:48:18 Temeluchus: comp you hunk of smouldering homos3x you

[jamie182861]

its has 36hp its been tuned by stan stevens mate

sp engine number is ddl050 gilardoni sp cylinder number 4dl00 nicisol barrel with boost ports crank has been rebuilt crank bearings renewed ebc clutch

[bladerunner]

36bhp is asking a hell of a lot for a 125 at the wheel.
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

[Pete.]

[jamie182861]

all engine parts and engine was tunned by a professionally by stan stevens he 2 stroke tuner

https://www.stanstephens.com/

[Sako]

[P.]

36hp is possible.

With A LOT of money.

A blank cheque typically..

[jamie182861]

tem specifics
Condition:
Used: An item that has been previously used. See the seller’s listing for full details and description of ... Read moreabout the condition
Year: 1993
Gears: Six-speed manual Manufacturer: Yamaha
Start Type: Electric start Model: tzr 125 r belgarda
Drive Type: Chain Type: Super Sport
MOT Expiry Date: 06/2014 Colour: Red
Performance Upgrades: Brakes, Special Exhaust/Slip on, Suspension, Tuned Engine Date of 1st Registration: 09/07/1993
V5 Registration Document: Present Engine Size: 125
Previously Registered Overseas: Yes Power: 36

[jamie182861]

here all info

yamaha tzr 125r belgarda ,hi for sale is my tzr belgarda [sp] started life as normal 4dl now sp spec,i have spent well over £1200 on this classic.Work been done as follows,powdercoated frame,swingarm,top bottom yokes,all hangers and brackets,wheels ,almost everything i could coat,engine is gen sp engine number is 4dl050----,gilardoni sp cylinder number 4dl00 nicisol barrel with boost ports,crank has been rebuilt,crank bearings ,seals new,all internal bearings and seals renewed,new ebc clutch,top end cylinder was perfect,put new wossner flat top in and mated with 4fu cylinderhead,gen yamaha gaskets used in rebuild,castrol mtx in gearbox and useing castrol 747 as premix,oil pump is there and works i just prefer to pre mix to be sure,carb is sp, was totally striped new jets 170 mains standard sp, pilot,plunger and needle all new and gave it ultrasonic clean,sp reeds new,sp double airbox,front and rear paolli fully adjustable suspension sp,new didi oring chain,new front,rear sprockets standard gearing,brembo calipers front and rear both have been rebuilt and new ebc sintered pads fitted,dunlop sportmax gp front and rear tyres,150,,110,,17,full jollymoto pipe and end can,bodywork has been repainted sp uniform, using yamaha colours,plastics are all oem yamaha,there was a few repairs here and there nothing you wouldnt exspect from 20 year old plastics,looks stunning in sp format,needless to say the engine will need gently run in before you can enjoy it full,when sold it will come with 1 years mot,those who know there tzrs will know how rare sp models are, sp engine and cylinder worth £900 alone

[P.]

Uhuh...

But to reiterate.

[jamie182861]

i dont know much. the guy i bought from said everything was tunned for racing i use around town and runs

i know u get alot people saying this stuff proof better great,

[Timmeh]

Even with your paddybodges I'm sure yer R1 would touch that figure (once, at least)

If it really, really has got all that power then I wouldn't expect the engine to last more than a 1000 miles at best and less than 500 at worst. And that's with the right components. Your piston, despite being forged rather than cast, is only the the 4FL which produces 20hp at best (they are, after all, detuned 3MB engines) so I can't imagine how much stress the little end and rings will go through. I've already drawn your attention to the fact that the pins will be in the wrong place.

Having owned and ridden a propa' SP I can safely say their only place is on the track. Yes, they may have lights and indicators but thanks to its zorst and ridiculous porting it produces fuck-all torque at the lower rev range. The powerband is hardly what you'd call manageable, it's just 2000 revs wide and keeping the engine on song whilst cornering on the road is hard work, even for someone who is experienced.

One of the reasons why we're giving you some stick perhaps is english (or lack of) in the advert. We'd all expect a serious TZR tuner and builder to be able to at least use coherent sentences and spell nicasil properly.

[P.]

Timmeh

https://en.wikipedia.org/wiki/Nikasil

[Timmeh]

still marginally better than 'nicisol' though.
____________________
GSXR400 x2 | '94 RVF400 | '93 TZR125 4DL (again)
20:22:30 BLUEX5: i would love to be forced to undergo a**l plugging with different sizes
20:48:18 Temeluchus: comp you hunk of smouldering homos3x you

[Calum122]

Would just like to highlight the unlikelyness of a 36 bhp 125 road going machine. I completely agree with Timmeh on this one.

You need to have the whole system set up perfectly to even reach 30bhp. And the reaching anything after that gets exponentially harder. I'm not saying yours isn't but I just doubt that you will if you don't seriously take into consideration that you would need to spend a heck of a lot more to get a TZR to that spec.

Also from my understanding of the SP barrels no amount of porting to a 3MB can ever match the SP. And they don't have markings other than YAMAHA embossed onto the side of the barrel.

It's an interesting thread but unless you have a dyno readout telling me where and how it gets its power delivery then I will have to doubt your reasoning.

According to my local Yamaha Dealership (Skellerns in Cheltenham) The 3mb00p is no different other than a raised exhaust port.

I have a 2004 Yamaha DT125RE and am currently running this cylinder with no gains only losses (due to the retard CDI the CDI cuts power where this raised exhaust port should see gains).

Not only is that all the 4dl Belgarda 3mb00p cylinder but the crank on the belgardas are slightly narrower.

I'm also told that the Cylinder itself Was produced by Polini for Belgarda. But there was that other name thrown in the mix.

This was told to me by the Auto technician Rob at Yamaha. Like me he too is a two smoke enthusiast.
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Always Originate, Never Pirate

[-]

There's also a huge difference in what Dyno you use and what correction. My Graham File tuned TZR250 2ma race biek will see 53bhp on the Gibson dyno and around 48bhp max at the track.

I'd be amazed if a TZR125 could be reliable with 36bhp. It would be achievable for a few minutes before it went pop.

[mevy87]

Hi all, just wanna say that after owning this bike i realise what happened..... the italian nutters suped the engine so much that it made a whopping 31.98 bhp putting out a top speed of 118 mph and being more reliable than the Aprilia RS equivalent

I have the 1991 model which still puts out 29 bhp of which i have the argument stopping dyno printout for proof.

I have put a pic up of mine.... let me know what you think guys
____________________
Mr Tin Ed

[P.]

[mevy87]

Can't be arsed taking a pic and uploading as I KNOW what this bike does

She has never let me down except when water gets in tank but that can be easily resolved with a new fuel cap outer gasket just trying to find one seems hard....

I paid 50 just for a water coolant tank which i believe to be about 1litre but it was a case of pay it or find another one which took 6 hours of none stop surfin to find

Next job is radiator as there is a small leak which seems to make the engine get too hot over prolonged red lines haha
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Mr Tin Ed