Added a UNI filter....

Mr Miller · Post by **Mr Miller** » Mon Jul 12, 2010 7:58 pm

Well in the search for more power and and top speed, I decided to add a UNI filter and jetted up to 130. (thank you to Scooter Trash for his example of what a proper UNI filter installed looks like)
Over the weekend I tested it and found it to be a little peppier from 40-55 but that was about it. So after a plug check we found it was running a little lean. So my mech is drilling out the jet a bit, not sure what to yet, guessing 132 or 135. I will find out this afternoon. In addition I am adding a iridium plug today, once the jetting has been figured out.

I have a Bando race CDI and Coil coming in the mail. So I will keep you guys posted on how things improve. If these changes don't improve my top speed I will probably switch my 12g dr pulley sliders to 11g, for added pep around town(not that it needs it;)

Kaos · Post by **Kaos** » Mon Jul 12, 2010 8:37 pm

I ended up with a 135 jet after I was done with that mod, you might shoot for around there.

ScooterTrash · Post by **ScooterTrash** » Mon Jul 12, 2010 9:45 pm

I'm at 119

Mr Miller · Post by **Mr Miller** » Mon Jul 12, 2010 9:57 pm

Up to 135 now still a little lean, heading to 137

Kaos · Post by **Kaos** » Mon Jul 12, 2010 10:00 pm

Mr Miller wrote:Up to 135 now still a little lean, heading to 137

Heh, I think that's the biggest jet Ive heard of so far. I had a 155 in there with my other head, but it was a little rich.

ScooterTrash · Post by **ScooterTrash** » Mon Jul 12, 2010 10:10 pm

Kaos wrote:
Mr Miller wrote:Up to 135 now still a little lean, heading to 137
Heh, I think that's the biggest jet Ive heard of so far. I had a 155 in there with my other head, but it was a little rich.

Yeah, thats a bit gnarly

KRUSTYburger · Post by **KRUSTYburger** » Mon Jul 12, 2010 10:38 pm

You guys are awesome, I can't even get my NCY variator/clutch to work right.

ScooterTrash · Post by **ScooterTrash** » Mon Jul 12, 2010 10:41 pm

KRUSTYburger wrote:You guys are awesome, I can't even get my NCY variator/clutch to work right.

Whats wrong now? PM me kiddo

Mr Miller · Post by **Mr Miller** » Tue Jul 13, 2010 1:29 am

Ok got Jack back and it looks like I was a little optimistic on the jetting;) So I think they went with about a 133 jet.... They want me to come back in 4 days to do one more plug check.

denverscoot50 · Post by **denverscoot50** » Tue Jul 13, 2010 10:41 pm

Hey guys I was wondering what size Uni filter to go with for a 125 buddy??? I have a stock carb.... thank you thank you!!!!

Mr Miller · Post by **Mr Miller** » Tue Jul 13, 2010 11:22 pm

UNI Air Filter with 1.5" opening

Should look like this installed (thanks Scooter Trash)

http://hphotos-snc3.fbcdn.net/hs585.snc ... 6414_n.jpg

Good Luck

gearhead · Post by **gearhead** » Tue Jul 13, 2010 11:44 pm

im at 120 with my uni filter

Tocsik · Post by **Tocsik** » Wed Jul 14, 2010 3:16 am

How loud is the intake with the Uni in place?
How frequently do you need to clean it (under normal conditions)?

Kaos · Post by **Kaos** » Wed Jul 14, 2010 3:19 am

Tocsik wrote:How loud is the intake with the Uni in place?
How frequently do you need to clean it (under normal conditions)?

Noticeably louder. Its an obvious sucking noise. I had to clean it fairly frequently because I was having oil blowback issues into the filter at high speed. Under normal conditions this won't happen.

threar · Post by **threar** » Wed Jul 14, 2010 4:21 am

I was wondering if anyone who's done this mod has also done a complete airbox delete? I'm wondering what the bike might look like without the big black airbox sitting there.

Kaos · Post by **Kaos** » Wed Jul 14, 2010 4:26 am

threar wrote:I was wondering if anyone who's done this mod has also done a complete airbox delete? I'm wondering what the bike might look like without the big black airbox sitting there.

This mod *IS* an airbox delete

It looks good, but a little strange to have all that extra room in there.

ScooterTrash · Post by **ScooterTrash** » Wed Jul 14, 2010 2:39 pm

threar wrote:I was wondering if anyone who's done this mod has also done a complete airbox delete? I'm wondering what the bike might look like without the big black airbox sitting there.

There is a picture of mine a few posts up, I'll try to get a outside pic later

threar · Post by **threar** » Wed Jul 14, 2010 3:01 pm

Ah yes, now I see the big open shaft of light. I'd really like to see the outside view. (Off topic:) Might be my motorcycle talking, but I'd love to clean up some of the tail section, perhaps even pulling off the rear fender.

Kaos · Post by **Kaos** » Wed Jul 14, 2010 3:13 pm

threar wrote:Ah yes, now I see the big open shaft of light. I'd really like to see the outside view. (Off topic:) Might be my motorcycle talking, but I'd love to clean up some of the tail section, perhaps even pulling off the rear fender.

Please do. The rear fender is ugly!

Though the plate mount is part of the fender, so you either have to cut off the bottom 1/2 of the fender, or find somewhere else to mount the plate.

threar · Post by **threar** » Wed Jul 14, 2010 3:19 pm

For the license plate, I was thinking something along these lines:

http://www.1tail.com/productImages_thumbBIG/35198

Might have to figure out how to fab/modify something, but perhaps there's a mount point freed up by the airbox-delete.

Mr Miller · Post by **Mr Miller** » Wed Jul 14, 2010 3:29 pm

So question, we have been messing with the jet trying to get it right. The plug check looks good but I am have a bogging issue at between 1/3 and 1/2 throttle. What steps should we take from here? Should we change out the secondary jet (is it the same style or different, where do you get replacements if it is a different style from the main jet?) or is the and air/fuel mixture issue, or idle screw issue. Feels pretty good at WOT but still not the topspeed I would like. Also I have a race cdi and coil coming, will they help any of these issues? I ask because of the removal of the rev limiter And timing advances.

Thanks!

Tocsik · Post by **Tocsik** » Wed Jul 14, 2010 3:41 pm

Kaos wrote:
threar wrote:Ah yes, now I see the big open shaft of light. I'd really like to see the outside view. (Off topic:) Might be my motorcycle talking, but I'd love to clean up some of the tail section, perhaps even pulling off the rear fender.
Please do. The rear fender is ugly! Though the plate mount is part of the fender, so you either have to cut off the bottom 1/2 of the fender, or find somewhere else to mount the plate.

Absolutely! I bobbed my rear fender and added a reflective red stripe to the rear wheel cover.

I would love to hear some ideas on adding an extension-type mud flap to that piece though. My back and/or backpack get pretty splattered now

Tocsik · Post by **Tocsik** » Wed Jul 14, 2010 6:28 pm

Mr Miller wrote:So question, we have been messing with the jet trying to get it right. The plug check looks good but I am have a bogging issue at between 1/3 and 1/2 throttle. What steps should we take from here? Should we change out the secondary jet (is it the same style or different, where do you get replacements if it is a different style from the main jet?) or is the and air/fuel mixture issue, or idle screw issue. Feels pretty good at WOT but still not the topspeed I would like. Also I have a race cdi and coil coming, will they help any of these issues? I ask because of the removal of the rev limiter And timing advances.

Thanks!

MrMiller, did you get the cdi and coil from buggypartsnw?

ScooterTrash · Post by **ScooterTrash** » Wed Jul 14, 2010 7:29 pm

Mr Miller wrote:So question, we have been messing with the jet trying to get it right. The plug check looks good but I am have a bogging issue at between 1/3 and 1/2 throttle. What steps should we take from here? Should we change out the secondary jet (is it the same style or different, where do you get replacements if it is a different style from the main jet?) or is the and air/fuel mixture issue, or idle screw issue. Feels pretty good at WOT but still not the topspeed I would like. Also I have a race cdi and coil coming, will they help any of these issues? I ask because of the removal of the rev limiter And timing advances.

Thanks!

Sounds like you need to shim your needle jet. I had to shim my brothers and he had far less mods

ScooterTrash · Post by **ScooterTrash** » Wed Jul 14, 2010 9:42 pm

Here ya go

Wheelz · Post by **Wheelz** » Wed Jul 14, 2010 10:35 pm

I have the same skulls as my stem caps, and I have hand grenades holding my tag on....

Mr Miller · Post by **Mr Miller** » Wed Jul 14, 2010 11:48 pm

[/quote]
Sounds like you need to shim your needle jet. I had to shim my brothers and he had far less mods[/quote]

OK, so the jet needle is not adjustable, this is why we need to shim it. Is this correct?
And doing that should in theory adjust the fuel at that throttle position, because it is probably running a little lean in said throttle position. And we think it is running lean because it is crackly sounding and a little jerky while held at say 1/3 throttle.

Mr Miller · Post by **Mr Miller** » Thu Jul 15, 2010 12:15 am

Scooter Trash beat me to this, but here is my UNI Filter

and since I am here I will go ahead and high jack my own thread...

Here the NEW Decals I designed now on my VJ. Also my new LED Deadlight and rear turn signals

Mr Miller · Post by **Mr Miller** » Thu Jul 15, 2010 12:23 am

Tocsik wrote:
Mr Miller wrote:So question, we have been messing with the jet trying to get it right. The plug check looks good but I am have a bogging issue at between 1/3 and 1/2 throttle. What steps should we take from here? Should we change out the secondary jet (is it the same style or different, where do you get replacements if it is a different style from the main jet?) or is the and air/fuel mixture issue, or idle screw issue. Feels pretty good at WOT but still not the topspeed I would like. Also I have a race cdi and coil coming, will they help any of these issues? I ask because of the removal of the rev limiter And timing advances.

Thanks!
MrMiller, did you get the cdi and coil from buggypartsnw?

No not this time, I highly recommend Buggy Parts NW though. Mike is a great guy very helpful. I hear he has a fantastic adjustable cdi and coil set, but I needed to keep costs down with all this jetting stuff going on....

http://cgi.ebay.com/ebaymotors/ws/eBayI ... &viewitem=

Tocsik · Post by **Tocsik** » Thu Jul 15, 2010 1:55 am

What is the stock main jet size on the 150? Same as the 125?
What would be a safe or practical up-jet if running a little lean and what would be the best starting point with an air box delete?

Thanks!

Mr Miller · Post by **Mr Miller** » Thu Jul 15, 2010 2:02 am

Stock is 95 jet, not sure what to go to after air box mods. Maybe 110 but I am not an expert....

Tocsik · Post by **Tocsik** » Thu Jul 15, 2010 2:16 pm

Mr Miller wrote:Stock is 95 jet, not sure what to go to after air box mods. Maybe 110 but I am not an expert....

Gracias!
I wonder why Genuine doesn't automatically upjet the 150's since they have a slightly larger displacement; especially the BJacks since they are intended to have the Prima pipe

.

Your 'Jack is lookin' very stylish!
Have you experienced any issues with riding in rain having the sponge-like filter exposed (or hear of any issues?) I ride in any weather unless it's snow or ice so that would be an issue.

Lostmycage · Post by **Lostmycage** » Thu Jul 15, 2010 2:48 pm

Tocsik wrote:
Mr Miller wrote:Stock is 95 jet, not sure what to go to after air box mods. Maybe 110 but I am not an expert....
Gracias!
I wonder why Genuine doesn't automatically upjet the 150's since they have a slightly larger displacement; especially the BJacks since they are intended to have the Prima pipe .

Your 'Jack is lookin' very stylish!
Have you experienced any issues with riding in rain having the sponge-like filter exposed (or hear of any issues?) I ride in any weather unless it's snow or ice so that would be an issue.

Jetting isn't about displacement, it's about mixing air and fuel. The 125 and 150 Buddies have the same intake and exhaust. The Blackjacks are supposed to come with 3 extra jets to use since the free-er flowing exhaust will make it more temperamental to it's atmospheric conditions.

At least people are willing to accept that you need to upjet with the pipe, lol. When I did mine, I was told vehemently that there was no need to rejet with the addition of the Prima pipe.

I did it anyway.

Mr Miller · Post by **Mr Miller** » Thu Jul 15, 2010 3:06 pm

Tocsik wrote:
Mr Miller wrote:Stock is 95 jet, not sure what to go to after air box mods. Maybe 110 but I am not an expert....
Gracias!
I wonder why Genuine doesn't automatically upjet the 150's since they have a slightly larger displacement; especially the BJacks since they are intended to have the Prima pipe .

Your 'Jack is lookin' very stylish!
Have you experienced any issues with riding in rain having the sponge-like filter exposed (or hear of any issues?) I ride in any weather unless it's snow or ice so that would be an issue.

The filter is very new to me so no experience with bad weather yet. Kaos said he ran his year round with no problems though

Thanks for the complements, I try hard to make 'ol jack look his best

Kaos · Post by **Kaos** » Thu Jul 15, 2010 4:27 pm

Mr Miller wrote:
Tocsik wrote:
Mr Miller wrote:Stock is 95 jet, not sure what to go to after air box mods. Maybe 110 but I am not an expert....
Gracias!
I wonder why Genuine doesn't automatically upjet the 150's since they have a slightly larger displacement; especially the BJacks since they are intended to have the Prima pipe .

Your 'Jack is lookin' very stylish!
Have you experienced any issues with riding in rain having the sponge-like filter exposed (or hear of any issues?) I ride in any weather unless it's snow or ice so that would be an issue.
The filter is very new to me so no experience with bad weather yet. Kaos said he ran his year round with no problems though
Thanks for the complements, I try hard to make 'ol jack look his best

Yeah, mine went through plenty of rain with no problems at all. Just oil it properly and its basically waterproof.

Mr Miller · Post by **Mr Miller** » Fri Jul 16, 2010 8:53 pm

Update:)

So they shimmed the needle with one of the magic radio shack washers, rode it. Still boggy. 2 washers, pretty good. 3 washers, much worse. So back to 2 they went:) a couple more plug checks looked good so I think we have it.

Also added a Race CDI and Coil and an Iridium plug, can't wait to test it tonight after work!

gearhead · Post by **gearhead** » Sun Jul 18, 2010 8:42 pm

how did the ride go?

k1dude · Post by **k1dude** » Sun Jul 18, 2010 10:46 pm

Kaos wrote:Just oil it properly and its basically waterproof.

How do you oil it?

I don't have a UNI filter, just the stock one. But I noticed in the manual, it says to spray the filter with 5 grams of 10W30 after blowing it out with compressed air. How the heck to you "spray" 10W30? I have no idea how to atomize automotive oil. I don't want to have to resort to putting 10W30 in my mouth and spewing it on my air filter.

I saw some "SuperTech Spray Lubricant" in the automotive section at Walmart that uses petrolium distillates. Would that work?

ScooterTrash · Post by **ScooterTrash** » Mon Jul 19, 2010 12:43 am

k1dude wrote:
Kaos wrote:Just oil it properly and its basically waterproof.
How do you oil it?

I don't have a UNI filter, just the stock one. But I noticed in the manual, it says to spray the filter with 5 grams of 10W30 after blowing it out with compressed air. How the heck to you "spray" 10W30? I have no idea how to atomize automotive oil. I don't want to have to resort to putting 10W30 in my mouth and spewing it on my air filter.

I saw some "SuperTech Spray Lubricant" in the automotive section at Walmart that uses petrolium distillates. Would that work?

Air filter oil

it's in an aerosol can

bigbropgo · Post by **bigbropgo** » Mon Jul 19, 2010 12:58 am

ScooterTrash wrote:
k1dude wrote:
Kaos wrote:Just oil it properly and its basically waterproof.
How do you oil it?

I don't have a UNI filter, just the stock one. But I noticed in the manual, it says to spray the filter with 5 grams of 10W30 after blowing it out with compressed air. How the heck to you "spray" 10W30? I have no idea how to atomize automotive oil. I don't want to have to resort to putting 10W30 in my mouth and spewing it on my air filter.

I saw some "SuperTech Spray Lubricant" in the automotive section at Walmart that uses petrolium distillates. Would that work?
Air filter oil it's in an aerosol can

Uni has a kit with two cans in it. One is a cleaner, the other is oil. I'm sure wherever you buy it would at least have the oil. But that's for uni brand oil. Probably not the cheapest.

Mr Miller · Post by **Mr Miller** » Mon Jul 19, 2010 1:34 am

k1dude wrote:
Kaos wrote:Just oil it properly and its basically waterproof.
How do you oil it?

I don't have a UNI filter, just the stock one. But I noticed in the manual, it says to spray the filter with 5 grams of 10W30 after blowing it out with compressed air. How the heck to you "spray" 10W30? I have no idea how to atomize automotive oil. I don't want to have to resort to putting 10W30 in my mouth and spewing it on my air filter.

I saw some "SuperTech Spray Lubricant" in the automotive section at Walmart that uses petrolium distillates. Would that work?

Uh I don't know about the supertech... I know UNI makes a spray oil for the filter, or you can use a K&N filter oil. You can find the K&N spray at most auto parts stores:)

Mr Miller · Post by **Mr Miller** » Mon Jul 19, 2010 1:42 am

gearhead wrote:how did the ride go?

Not so great, still sputtering at mid throttle, I think it was even worse than before

I noticed that it was racing at idle so I turned the idle down as far as I could, and that actually helped with the mid throttle sputtering quite a bit. But it is still there. I am pretty positive it is running too rich in the middle...
So I am going to take it to the Voodoo Guru (Kaos) next Saturday, if anyone can get Jack running right he can:)

So hopefully I will have some better news next weekend!

Thanks again Kaos, for the invite up!

k1dude · Post by **k1dude** » Mon Jul 19, 2010 2:41 am

Thanks for the K&N tip at auto stores. Good luck Mr Miller, I hope you figure it out soon. Sorry I deviated from your original topic.

ScooterTrash · Post by **ScooterTrash** » Mon Jul 19, 2010 4:18 am

Mr Miller wrote:
gearhead wrote:how did the ride go?
Not so great, still sputtering at mid throttle, I think it was even worse than before
I noticed that it was racing at idle so I turned the idle down as far as I could, and that actually helped with the mid throttle sputtering quite a bit. But it is still there. I am pretty positive it is running too rich in the middle...
So I am going to take it to the Voodoo Guru (Kaos) next Saturday, if anyone can get Jack running right he can:)

So hopefully I will have some better news next weekend!

Thanks again Kaos, for the invite up!

Turning the idle down wont affect anything, it just pushes on the throttle. Unless you turn the mix screw which is a no no if you don't know what you're doing. Good call on taking it to Kaos. sounds like this shop is below par as well

PIStaker · Post by **PIStaker** » Mon Jul 19, 2010 5:21 am

[quote="Mr Miller"]Scooter Trash beat me to this, but here is my UNI Filter

and since I am here I will go ahead and high jack my own thread...

Here the NEW Decals I designed now on my VJ. Also my new LED Deadlight and rear turn signals

Mr Miller,
What seat is that that you have on there? It's not the BJ seat is it? If so, the piping looks way different than mine. Mine is also sunbleached pink at this point.
Just curious.
Yours looks like a custom stock seat.
Great job btw.
Thx,
Mike

Mr Miller · Post by **Mr Miller** » Mon Jul 19, 2010 6:03 am

[/quote]
Turning the idle down wont affect anything, it just pushes on the throttle. Unless you turn the mix screw which is a no no if you don't know what you're doing. Good call on taking it to Kaos. sounds like this shop is below par as well[/quote]

Yeah should have listened to you and your warnings:/ but live and learn I suppose. Sometimes it sucks living in a small town... We had 3 or 4 motorcycle shops in town a couple of years ago but with the economy we are down to 1.5ish.

Mr Miller · Post by **Mr Miller** » Mon Jul 19, 2010 6:08 am

"Mr Miller,
What seat is that that you have on there? It's not the BJ seat is it? If so, the piping looks way different than mine. Mine is also sunbleached pink at this point.
Just curious.
Yours looks like a custom stock seat.
Great job btw.
Thx,
Mike"

Thanks:) it is a custom seat, I bought a stock seat and had it recovered similar to the black jack's seat (but with nicer materials and some more foam) it was about $50 to get it done:)

PIStaker · Post by **PIStaker** » Mon Jul 19, 2010 6:17 am

Mr Miller wrote:"Mr Miller,
What seat is that that you have on there? It's not the BJ seat is it? If so, the piping looks way different than mine. Mine is also sunbleached pink at this point.
Just curious.
Yours looks like a custom stock seat.
Great job btw.
Thx,
Mike"

Thanks:) it is a custom seat, I bought a stock seat and had it recovered similar to the black jack's seat (but with nicer materials and some more foam) it was about $50 to get it done:)

Wow, that's defo worth looking into then. I love the look, sans my pink piping, and would love to have some more padding.
Thanks for the info.

Tocsik · Post by **Tocsik** » Wed Jul 21, 2010 3:01 pm

Inquiring minds want to know...

How did the Weekend at Kaos' go? 'Jack running sweet now?

Also, I see Uni filters that are 1 1/2" of different lengths (4 and 5 inch) and with straight or angled tubes.

Anyone have a part number you're willing to share?

Mr Miller · Post by **Mr Miller** » Thu Jul 22, 2010 1:12 am

Have not gone up yet, but I will be on Saturday. I will update when I get back:)