DT125R ARCHIVE

Members Login
Username 
 
Password 
    Remember Me  
DT125R Forum -> CARBS -> Getting a bigger carburetor
Post Info TOPIC: Getting a bigger carburetor
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Getting a bigger carburetor
Permalink  
 

I'm thinking of putting a bigger carb on the dt as soon as i get it running again
since the airscrew got ****ed up plus I want more power out of the DT haha
(I'll get the cylinder from a rebore in the end of the week, and the piston n everything)

So I was thinking the tm32, but I found out that tm34 had the same dimensions but it has a 2mm bigger bore size and slightly bigger jets in it, and it's same price
http://www.ebay.co.uk/itm/Mikuni-TM32-1-Flat-Slide-Carburetor-32mm-HP-Carb-/170642195195?pt=Motorcycles_Parts_Accessories&hash=item27bb1142fb
http://www.ebay.co.uk/itm/Mikuni-TM34-2-Flat-Slide-Carburetor-34mm-HP-Carb-/160859758470?pt=Motorcycles_Parts_Accessories&hash=item2573fd1f86

I'd love to hear some opinions! or if you got some better and cheaper option on the carbs

 

and I know I'll have to drill out the inlet manifold, but I dont know really how I should do with the airfilter part.
- Power air filter will have the shock in it's way, plus these filters get dirty pretty easy
- The other option (and probably better) is to use the original airbox since it wont get dirty and no shock blocking off. But then I'll have to stretch it out to make it fit (saw someone else do this), and probably make the hole into the airbox a slight bit bigger aswell.

 


I hope it'll be a success! Then I will post some photos, and it'll hopefully become a useful thread for those who want to upgrade their carbs aswell :)




Edit: I decided to get a TMX30 Powerjet in the end, Pictures and descriptions on page 2

-- Edited by zander on Monday 24th of June 2013 10:01:02 PM



-- Edited by zander on Thursday 27th of June 2013 10:47:47 PM



-- Edited by zander on Tuesday 30th of July 2013 11:28:58 PM

__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
RE: Getting a 32mm or 34mm carb, probs a Mikuni Flatslide
Permalink  
 

So, what carb would you guys recommend?

__________________

Yamaha DT 125 RE -06
Energized


DTR Legend

Status: Offline
Posts: 1853
Date:
Permalink  
 

Go for the 34mm if it's the same price don't see why not :)

You won't see any gains though, just a bit more throttle response and a lot more fuel consumption.

If your DT is like mine, it's bad enough as it is with all the hooning i do ^^



__________________

 
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

I've heard and read the opposite. Its one of the best modifications you can do to your dt.


But agree with the fuel consumption. Thats the beauty of the dt. Uses up hardly any fuel. R

__________________

Always Originate, Never Pirate!

The Leviathan Project
Energized


DTR Legend

Status: Offline
Posts: 1853
Date:
Permalink  
 

With mods to suit ofcourse it is dear boy. But just putting a bigger carb on won't do shéét, just slightly improved throttle response like with better quality reeds :)



__________________

 
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

I heard they also have slight smaller pilot jet and another needle, plus slight smaller main jet in the RE carbs... and mine is kinda fcked, probably driveable with it but I sure wont get the same power out of it, and it would be so much easier to get a new carb than trying to mix with drilling airbox and jetting and such

about the fuelconsumption, in the tm32 it's a 250 main jet and in the tm34 it's a 280 main jet. Not too much of a difference imo ;)

It won't give me much higher rpm's ofc. But I will sure gain a few extra bhp (= I can put bigger front sprocket with no problem) hehe

__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

I was just thinking if not the 34mm is starting to get overkill for the 125cc engine?
or is 34mm still okay ? I mean it would still bring a bit more power than tm32 except drinking more fuel heh

__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

bah, still dont know if I should get a tm32 or tm34 or what carb I should get
advice me :D

When googling I read someone saying tm32 if it's a standard derestricted dt, and tm34 if you've got the cylinder ported

__________________

Yamaha DT 125 RE -06
dread123


Moderator

Status: Offline
Posts: 940
Date:
Permalink  
 

ive looked into getting wr200/dt200r carb on mine..watching a carb at moment-but dont think i'll purchase as yet..good luck

__________________
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

you mean the TMX 30 ? I've been looking on those too but they are hard to find

found this, but they dont post to finland anyways
http://www.ebay.co.uk/itm/Mikuni-TMX-30mm-Power-Jet-carb-Vespa-Lambretta-/181165520828?pt=UK_Motorcycle_Parts_13&hash=item2a2e4e77bc

__________________

Yamaha DT 125 RE -06
dread123


Moderator

Status: Offline
Posts: 940
Date:
Permalink  
 

http://www.ebay.co.uk/itm/121132259447?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

there are a coupleif you search properly :p but yes thats my idea of purchasing :p

__________________
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

Think I'll buy a tm32
..And when comparing the vm28 to tm32 to their standard jetting, it's already a huge difference
Most people with 34mm also have athena 170cc or have their cylinder ports tuned.

__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

meh, didn't expect there to be alot of extra taxes when importing as I have never done it before
Total cost of a tm32 would be about 155pounds to Finland, plus it would take 3-4 weeks

Total cost of a tm32 in europe is about 170-190 pounds

I'm considering a tmx30 now as they are cheaper and easier to find in europe

__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

found this
http://www.lambretta-teile.de/ tmx30 - 165
http://www.scooter-center.com/ tmx30 - 170, tmx32 - 179
http://www.mikuni-topham.de/ have mailed them for price on tm32-1 and tmx30
http://www.allensperformance.co.uk mailed them for prices on tm32-1, tmx30 and tmx32



-- Edited by zander on Thursday 27th of June 2013 10:12:45 PM

__________________

Yamaha DT 125 RE -06
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

zander wrote:

I was just thinking if not the 34mm is starting to get overkill for the 125cc engine?
or is 34mm still okay ? I mean it would still bring a bit more power than tm32 except drinking more fuel heh

Had a 38mm carb on my 2001 dtr.  



__________________

Always Originate, Never Pirate!

The Leviathan Project
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
RE: Getting a bigger carb, probs a Mikuni Flatslide
Permalink  
 

Anyone knows if the Mikuni roundslide carbs are any good? since they are alot cheaper, or would it be worth spending a few extra to get flatside?

__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

I believe modding the way to go. I will probably fit a 32mm max.

In Finland it's probably easiest to get your hands on Dellorto carbs
The biggest motorcycle parts importer in Finland only sells Dellorto, plus my friend can get really good discount from them :)



-- Edited by zander on Wednesday 3rd of July 2013 09:58:56 PM

__________________

Yamaha DT 125 RE -06
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

Get the flatslide mate.

Don't know why but i'm told they're better!

__________________

Always Originate, Never Pirate!

The Leviathan Project
KenDOG


DTR Senior Member

Status: Offline
Posts: 108
Date:
Permalink  
 

I do believe the flatslide gives the bike better throttle response and pair it with carbon reeds!!
I have never thought about a bigger carb on my dt I've got the older cylinder (1988 ish) paired with a 3mb head on standard carb and she goes well

Ken


__________________
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

How much are carbon reeds? I believe they only give throttle response so dont think I wanna get

I dont know really if I'm getting a bigger carb after all... since it was going to cost alot more than I expected.
Something is weird with my carb as it's not running as it should..
Gonna try a bigger main jet and then if it starts running really good then maybe I stay with the 28mm mikuni (got 240 main jet, snorkle removed now and airscrew on max since and I can't adjust it since it's fcked) and it runs better on 0 - 1/2 throttle than 1/2 - MAX throttle...

But a friend of mine can get home dellorto carbs with 20%-50% discount so perhaps I'll get a dellorto then but I don't know which dellorto carbs they got yet

__________________

Yamaha DT 125 RE -06
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

Problem i find is there is no aftermarket parts. No bigger inlets or boots!

__________________

Always Originate, Never Pirate!

The Leviathan Project
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

On my dtr2001 i fitted a 38mm carb. It IS POSSIBLE

__________________

Always Originate, Never Pirate!

The Leviathan Project
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

Haha yes, but with anything bigger than 32mm or 34mm wouldn't give much more power unless you would tune the barrel ports

And a too big carb would only give better high range and worse low and mid range



-- Edited by zander on Thursday 4th of July 2013 01:44:29 PM

__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

Think I'll order the TMX30 with powerjet
any advices on what jets I should get along? Standard is 195main jet, 80power jet and 40 idle jet
was thinking 25, 30, 35 idle jet, 60 powerjet and 220, 230 main jet (already have a 210 and 240 jet)

__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

Finally ordered it haha

90n9.png



__________________

Yamaha DT 125 RE -06
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

Nice. Let us know your setup in the end.

__________________

Always Originate, Never Pirate!

The Leviathan Project
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

I think I'll sway with the TMX30. So be interested in how you set urs up!

__________________

Always Originate, Never Pirate!

The Leviathan Project
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

Calum122 wrote:

Nice. Let us know your setup in the end.

Yeah I'll do that. Hopefully the carb will come in the end of the week



__________________

Yamaha DT 125 RE -06
zander


DTR Senior Member

Status: Offline
Posts: 282
Date:
Permalink  
 

Today the TMX30 Powerjet finally arrived! I'm a bit dissapointed though...

93cs.jpg

9ind.jpg

al88.jpg

 

The piece of plastic that connects to the powerjet was damaged :/
I'll mail them and see if they can send me a new, whole piece of plastic

 

I'll try seal it up with something until then. But I'll be busy this weekend so wont have time to fit it on the dt just yet



__________________

Yamaha DT 125 RE -06
Calum122


Guru

Status: Offline
Posts: 7569
Date:
Permalink  
 

Other than that it looks really good!

__________________

Always Originate, Never Pirate!

The Leviathan Project
1 2  >  Last»  | Page of 2  sorted by
Quick Reply

Please log in to post quick replies.
DT125R Forum -> CARBS -> Getting a bigger carburetor
Tweet this page Post to Digg Post to Del.icio.us


Create your own FREE Forum
Report Abuse 		Powered by ActiveBoard