Rps Hawk 250 carburetor

[hertz9753]

Originally Posted by Jmcgee

threads look longer but the same pitch, jets look the same dimensional size and it fit and works. Next time I pull it i will take pics.

What are you trying to prove? You don't even own both of the carbs in question. I think it best if we both dropped the whole thing.

[Ariel Red Hunter]

Originally Posted by hertz9753

What are you trying to prove? You don't even own both of the carbs in question. I think it best if we both dropped the whole thing.

Can I get an Amen?

[Jmcgee]

Originally Posted by hertz9753

What are you trying to prove? You don't even own both of the carbs in question. I think it best if we both dropped the whole thing.

Im just saying what I said from the start before you two jumped in with your nonsense, he does not have to buy that mikuni.

[Jmcgee]

Originally Posted by Ariel Red Hunter

Can I get an Amen?

Amen brother, you don't even own a chinabike

[Ariel Red Hunter]

Originally Posted by Jmcgee

Amen brother, you don't even own a chinabike

True, but I have owned and tuned Amal, Bing, Delorto, Mikuni, Villiers and Keihan carburetors for over 60 years.

[Jmcgee]

Originally Posted by Ariel Red Hunter

True, but I have owned and tuned Amal, Bing, Delorto, Mikuni, Villiers and Keihan carburetors for over 60 years.

**keihin**

[JerryHawk250]

Originally Posted by Jmcgee

Mine is like motocheez and takes mikuni jets. Have them in it right now, A lot of people have bought the 30 dollar carb. if You do hey its your $ people who have jetted the stock carb and then purchased the mikuni have not noticed any difference.

Either way, the jets are the same, you change them the same way, and the mixture screw is on the outside

Same here. I went back and checked the stock jet and the mikuni and have the same threads.

[JerryHawk250]

Originally Posted by Jmcgee

But you still have to pull it apart, just not dremel the screw slots.

I cut the slots with a fine tooth hack saw. It was a whole lot safer than the dremel.

[Ariel Red Hunter]

Originally Posted by JerryHawk250

Same here. I went back and checked the stock jet and the mikuni and have the same threads.

The Keihin has 0.8 mm threads. The Mikuni has 0.75 mm threads. That's close but not identical. The Mikuni jets will thread into the Keihin carburetor ok, but the Keihin jets will screw up the threads in the Mikuni carb.

[JerryHawk250]

Originally Posted by Ariel Red Hunter

The Keihin has 0.8 mm threads. The Mikuni has 0.75 mm threads. That's close but not identical. The Mikuni jets will thread into the Keihin carburetor ok, but the Keihin jets will screw up the threads in the Mikuni carb.

got it.

[Jmcgee]

Originally Posted by Ariel Red Hunter

The Keihin has 0.8 mm threads. The Mikuni has 0.75 mm threads. That's close but not identical. The Mikuni jets will thread into the Keihin carburetor ok, but the Keihin jets will screw up the threads in the Mikuni carb.

Where did you get this information, I would like to read it. everything I have found said the head of the keihin jets are a mm bigger also, these are not. maybe its a china thing and not real brand copy jets. wish I had a metric thread pitch tool....

[Ariel Red Hunter]

Originally Posted by Jmcgee

Where did you get this information, I would like to read it. everything I have found said the head of the keihin jets are a mm bigger also, these are not. maybe its a china thing and not real brand copy jets. wish I had a metric thread pitch tool....

I got this information from Human Being's post # 13 on the "Bashan Blaze can't get past 7000 RPM" thread. Human Being seems to be able to read Chinese. He often posts on electrical problems.

[Jmcgee]

Originally Posted by Ariel Red Hunter

I got this information from Human Being's post # 13 on the "Bashan Blaze can't get past 7000 RPM" thread. Human Being seems to be able to read Chinese. He often posts on electrical problems.

I believe he is mistaken.....
from jets are us
OVERALL LENGTH = 9mm
HEAD DIAMETER = 8mm
THREAD DIAMETER = 4.9mm
THREAD PITCH = 5.0 x 0.7
MIKUNI N100.604

and no KEIHIN is the same physical size, so mikuni knock off main jets may be in these stock carbs

[hertz9753]

My only point was that those Mikuni jets will fit in the stock Hawk carb but not in the Mikuni VM26. I know it because I tried to use them in the Mikuni and they wound not thread in. That is all I have say in the great main jet debate.

[Jmcgee]

Originally Posted by hertz9753

My only point was that those Mikuni jets will fit in the stock Hawk carb but not in the Mikuni VM26. I know it because I tried to use them in the Mikuni and they wound not thread in. That is all I have say in the great main jet debate.

But now my curiosity is kicked in