TBR7 upgrades and problems

[NzBrakelathes]

Originally Posted by paulsstag

Hi Mike , i took off the stock carb and i have never even opened it up. I left it like that so if ever i have problems i can bolt it back on as a reference point. i bought a VM26 replacement plus jets(total under $50) to tinker with and after reading many posts about these carbs with some having #20 pilot jets and some #40 pilot jets i wanted to open mine up to see what it had.

It is most certainly a worthwhile change IMHO, It seems the factory main jet in the stock carb is a #88 which is very very small. Part of the reason i could run the stock carb is the elevation at which i live (6000 ft) so it probably is only a good reference point for people living in colorado etc but i wanted to put it out there anyway.

If you live at lower elevation then the change ( of carb ) must be worthwhile.

I'm not trying to say my bike is like a rocket ship now but the change is very noticable .

Paul

The stock carb is as tunable as the mikuni - just a little effort needed to open the 3 screw and brass plug covering the adj mix screw

[paulsstag]

Originally Posted by NzBrakelathes

The stock carb is as tunable as the mikuni - just a little effort needed to open the 3 screw and brass plug covering the adj mix screw

I agree with you 100%. in my case i probably just needed a bigger main jet and possibly a needle shim . I was just lazy to cut slots in the stock float bowl and drill out the plug for the air mixture screw. However doing it this way if things did not go according to plan with the stock carb your bike might be down until you can figure it out . Mine was a swap and go.

Also about the pumper carb, I believe Megadan is on his game about it being the best choice and it is good to know how to get the best out of these little bikes. I ,for the moment , just wanted it to run a little better than with the stock carb, but at the same time did not want to mess with the original carb.

I'm sure as time goes on i will probably follow what megadan and jerry have done to their bikes , porting , compression increase, pumper carb and better intake and exhaust etc. Truth is without guys like them how many would try to improve their rides?

I also appreciate people like you for keeping your finger on the pulse so to speak and put together viable replacement part options. Some of the stuff you have seen where you live will probably boggle my mind .

[NzBrakelathes]

Originally Posted by paulsstag

I agree with you 100%. in my case i probably just needed a bigger main jet and possibly a needle shim . I was just lazy to cut slots in the stock float bowl and drill out the plug for the air mixture screw. However doing it this way if things did not go according to plan with the stock carb your bike might be down until you can figure it out . Mine was a swap and go.

Also about the pumper carb, I believe Megadan is on his game about it being the best choice and it is good to know how to get the best out of these little bikes. I ,for the moment , just wanted it to run a little better than with the stock carb, but at the same time did not want to mess with the original carb.

I'm sure as time goes on i will probably follow what megadan and jerry have done to their bikes , porting , compression increase, pumper carb and better intake and exhaust etc. Truth is without guys like them how many would try to improve their rides?

I also appreciate people like you for keeping your finger on the pulse so to speak and put together viable replacement part options. Some of the stuff you have seen where you live will probably boggle my mind .

Did you see my set? All bits to tune stock carb? Basic starting point add 105 main and use 1 slot below center
Not much more then a whole new carb in effirt

[Megadan]

Originally Posted by NzBrakelathes

Did you see my set? All bits to tune stock carb? Basic starting point add 105 main and use 1 slot below center
Not much more then a whole new carb in effirt

You are trying to change the mind of a person that already has the Mikuni. Why would he then go backwards and buy a bunch of parts for the sealed carb that he already admitted that he didn't feel like messing with when he already has a viable option that can be tuned with ease with a bunch of examples and experience already on here for it?

While I am at it, let's revisit this...

Originally Posted by NzBrakelathes

Everyone likes there choices but what measure or facts do we base it from?

Just being as fair as I can and saying regardless what option you choose over another and done correctly everyone is happy but some spend more then others getting there.

What measure or facts do we base it from? First hand accounts and experiences from several members here that have tuned and ran both carbs who have repeatedly expressed as such? Even if there is no performance gain, per se, the ease of tuning and minor difference in responsiveness are both things that more than one person has stated at different times in different threads, myself included. The fact that the jets the Mikuni clones use are very easy to buy even locally in most places because they are fairly common. These are all things stated before, more than once.

Some do spend more than others to get there. If they can afford to and it is what they want to do, what do you care? It's their money to spend how they please. I spend more than most entirely because, 1 - I can, and 2 - like others here, I document my successes, failures, opinions, and facts so that others can do the upgrades with more knowledge and thus confidence. That is the point of a community, to help benefit all. I have benefited from others just as much as others have benefited from me. You do offer something that can greatly help people that may be on a tighter budget or just don't want to spend a ton of money. There is a difference between giving people options, and beating people over the head with it - like pushing said jet kit to a person that already has a different carb.

[NzBrakelathes]

Info sticks around - not about selling etc.

Free to choose and good to have info and opinions that show all options.

Yes you have the experience I don't that Ok no drama etc.

Inform ones self or not is ones own choice but let the info be fairly correct to choose from.

Good Magdan that's the spirit etc