Would anyone happen to have some photos of how the HPI V2 air cleaner mounts? I know it's generally the same a any system, but I'm curious as to how the backing plate and the two vented extenders that mount to the heads work together.
Just a lot of money to spend and not like some aspect of it. And I did ask for some detail from them, got nadda.
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That part is just a cover for the bolts kind of. It bolts to the breathers and then the cover covers up the bolts and you mount the filter. I'll see if I have any phots of mine apart
Thanks Jason. I asked them for an illustration or something, I never heard back from them.
http://www.socimage.com/media/942901219398659082_53795650
Those three fasteners scare me. What keeps them from getting eaten if they were to loosen I wonder.
I have a different one on the bike now but here is the old one I had
I see, the velocity stock fits over the three screws at the TB. Looks like you have to convert it to external vents too?
Quote from: Ohio HD on March 01, 2018, 06:49:42 PM
I see, the velocity stock fits over the three screws at the TB. Looks like you have to convert it to external vents too?
In the pic I linked it showed hollow breather bolts, then the velocity stack and that weird cover goes on. It looks to me that it vents the breathers under the odd shaped cover.
The standard air cleaners (meaning anyone you buy from them) are vented through those breather bolts into the channels hidden by that cover. They sell external vents (which I have on mine) that are pretty trick too and don’t change the look of the air cleaner at all
I run the V2, I ordered it with external venting. Here is the filter used showing dimensions.
https://www.knfilters.com/search/product.aspx?prod=E-3300 (https://www.knfilters.com/search/product.aspx?prod=E-3300)
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Has anyone been able to run this unit with a 1" thicker air filter element?
I haven't but I did talk to Green Filters (the company) at SEMA a few years ago. I asked about getting a certain spec filter made in a taller version. I was told there would be no problem. They simply apply the rubber ends to a taller pleated section. He said they have the specs on pretty well everyone's models. I don't remember him telling me it would cost more but it probably wouldn't come as quick as an off the shelf item. When you go up 1" on the S&S breather you simply add the 1" stud extension and ride with your right knee up against it. :teeth:
Since I made this original post, I've done a lot of looking onto the V2 filter. The V2 filter is rated at 428 cfm by HPI, I bought one and plan on using it on this next 124". I have no plans of increasing the filter media depth.
Quote from: kd on January 01, 2022, 07:54:06 PMI haven't but I did talk to Green Filters (the company) at SEMA a few years ago. I asked about getting a certain spec filter made in a taller version. I was told there would be no problem. They simply apply the rubber ends to a taller pleated section. He said hey have the specs on pretty well everyone's models. I don't remember him telling me it would cost more but it probably wouldn't come as quick as an off the shelf item. When you go up 1" on the S&S breather you simply add the 1" stud extension and ride with your right knee up against it. :teeth:
Right. Will that stud kit work with this set up? I'm using taller filter now on my CV 51 and I do not have any issues as far as comfort goes. I am short so I have plenty of room.
Maybe Ohio or someone that has one can tell you. I haven't had one in hand yet. I'm just passing on a conversation I had about getting custom length filters. It may be a moot point though. I understand these HPI V2 filters flow more than you will need.
Quote from: Ohio HD on January 01, 2022, 08:05:55 PMSince I made this original post, I've done a lot of looking onto the V2 filter. The V2 filter is rated at 428 cfm by HPI, I bought one and plan on using it on this next 124". I have no plans of increasing the filter media depth.
I've used the V2 on my 114" Twin Cam, my 124" Twin Cam, and now on my 131" M8. For the M8, the filter unit is not wide enough in my opinion, so I asked them to send me their 2" filter with longer standoffs. The 2" filter is the way to go.
Quote from: les on January 01, 2022, 09:46:39 PMQuote from: Ohio HD on January 01, 2022, 08:05:55 PMSince I made this original post, I've done a lot of looking onto the V2 filter. The V2 filter is rated at 428 cfm by HPI, I bought one and plan on using it on this next 124". I have no plans of increasing the filter media depth.
I've used the V2 on my 114" Twin Cam, my 124" Twin Cam, and now on my 131" M8. For the M8, the filter unit is not wide enough in my opinion, so I asked them to send me their 2" filter with longer standoffs. The 2" filter is the way to go.
Les, do you have any before and after HP/TQ numbers on the 2" wider filter?
My conversation with HPI giving them my goals of into 16O SAI, they said the V2 would support it as long as everything else was in place. Heads, exhaust, TB, etc.
Quote from: kd on January 01, 2022, 09:13:31 PMMaybe Ohio or someone that has one can tell you. I haven't had one in hand yet. I'm just passing on a conversation I had about getting custom length filters. It may be a moot point though. I understand these HPI V2 filters flow more than you will need.
Yeah they do flow a lot of air according to what HPI says. There were some other concerns that I had about this unit that I was able to nail down. Thanks for your information.....
Quote from: Ohio HD on January 01, 2022, 09:52:39 PMQuote from: les on January 01, 2022, 09:46:39 PMQuote from: Ohio HD on January 01, 2022, 08:05:55 PMSince I made this original post, I've done a lot of looking onto the V2 filter. The V2 filter is rated at 428 cfm by HPI, I bought one and plan on using it on this next 124". I have no plans of increasing the filter media depth.
I've used the V2 on my 114" Twin Cam, my 124" Twin Cam, and now on my 131" M8. For the M8, the filter unit is not wide enough in my opinion, so I asked them to send me their 2" filter with longer standoffs. The 2" filter is the way to go.
Les, do you have any before and after HP/TQ numbers on the 2" wider filter?
My conversation with HPI giving them my goals of into 16O SAI, they said the V2 would support it as long as everything else was in place. Heads, exhaust, TB, etc.
I'm sorry that I don't. My opinion is not coming from data and numbers but rather a feeling when I look at the area of the 1 1/2" filter compared to the 2" filter. Also, I've always used those style of air filters (smaller ones for smaller engines, but same configuration). The V2 2" is the only one that does not start to choke out the engine when I ride in pouring rain. That tells me something too.
I have the 1 1/2" M8 sitting on my shelf. It just ain't big enough, regardless of what HPI says. I realize that without data, what I said sounds like crap. But I'm standing firm to it.
Also, if you ask HPI to send you the 2" and longer stand offs (instead of buying them after the fact like I did) then it's no loss on your end. You're assured of maximum air ability through your filter.
Ohio, just to note. The V2 is fine...actually perfect. I just don't like that for their twin cams they have 2" filters, then all of a sudden, they drop to a 1 1/2" filter for their M8 unit.
(M8 V2)-(1 1/2" filter)-(short stand offs)+(2" filter)+(long stand offs)=perfection.
...in my opinion.
I don't know if we're talking that same filter or not. Mine came with a 2-1/2" wide filter in it. If measuring only the media height, yes that's about 2".
12-01-2022 - HPI V2 air breathr - 01.jpg
"I just don't like that for their twin cams they have 2" filters, then all of a sudden, they drop to a 1 1/2" filter for their M8 unit."
A couple threads down from this rigidthumper brings up some good observations on choke points. From rigidthumper, "Balance is the key". No secret M8 heads flow way better than TC heads, even some "worked" TC heads. HPI over the years doesn't strike me as looking to cut their way into prosperity. They do their homework, and produce accordingly, IME. Why produce a filter that could on certain models (Lowrider S with mids for example) infringe on leg clearance if it's not needed, and balances the requirements? Just a thought.
Yes, Ohio. That's the 2" filter. I guess you're doing a twin cam?
Yes, Twin Cam.
Got it. I thought it was based on the M8...sorry. If you do a V2 on an M8, don't forget to ask them for the 2" and longer stand offs. Also, you do know not to charge the V2?
Quote from: Ohio HD on January 02, 2022, 12:58:43 PMI don't know if we're talking that same filter or not. Mine came with a 2-1/2" wide filter in it. If measuring only the media height, yes that's about 2".
12-01-2022 - HPI V2 air breathr - 01.jpg
I have this same AC on my blue FXR (TC124) and was prepared to draft a lengthy email explaining how the outer plate interfaces with the standoffs. But since already have the filter you see what is needed to use a taller filter. Seems about half an hour on a lathe and a taller filter are all that is required. That stack looks cool, not sure if it adds anything though.
Regardless what K&N or anybody else says, the filter flows less as it gets dirty. If you've got a real "breather" of an engine a little extra width might give extra margin between cleanings as long as it's not in your way.
Quote from: 04 SE Deuce on January 27, 2022, 09:15:31 PMRegardless what K&N or anybody else says, the filter flows less as it gets dirty. If you've got a real "breather" of an engine a little extra width might give extra margin between cleanings as long as it's not in your way.
Additionally, one feature I like about the V2 is that it's very easy to clean in the hotel sink when I'm on a long trip. If the bugs are bad, I'll clean it every few days.
Some follow up on the V2 breather for the Twin Cam motors. As has been known the OEM size filter is a K&N E-3300. Below I'll list the three other K&N numbers that are taller and match the ID and OD.
Part Height ID OD
E-3300 2.750 5.250 6.250 (OEM size for V2)
E-3340 3.250 5.250 6.250
E-3344 4.000 5.250 6.250
E-3346 6.000 5.250 6.250
I ordered an E-3340 from K&N which is 0.500" taller.
The filter stand offs in the Twin Cam filter are a length of 2.550". I'll need to make three that are 3.050" long. But will wait till the filter arrives to insure the length difference.
I may also go ahead and make three that are 3.800" long in the event I wanted to go to a 4.000" filter. But I don't see that being needed or of any benefit.
V2 air breather extended filter supports (+0.500).jpg