Build Your Own SE Stage-1 A/C with K&N Filter

[petrock]

Originally Posted by KKRider

Do you know if anyone is making spacers to move the back plate out away from the engine?

Why would you want to do this? It will not improve anything (especially performance) and will only server to make the A/C cover hit your leg.

[KKRider]

petrock

At the risk of making this sound like a lecture in the fundamentals of mechanics/performance (it is) let me say this about that.

Cooler air is denser air (always). Anything one can do to cool/reduce temps of the air entering the engine, in theory at least and almost always in practice will further improve performance. When you get rid of the plastic back plate that has some insulating qualities and replace it with an aluminum one, one that is a very efficient conductor of heat you are going the wrong way in that regard. Spacing the back plate away from the heads and upper jugs will allow more air flow between the back plate and heads and the heads will also shed heat more readily. Now, if one was to make the throttle body to back plate spacer and breather spacers out of a phenolic (high insulating qualities) material you could further reduce heat transfer into the plate which in turn reduces heat transfer into the air stream. Here in Souther AZ for example where you can find yourself out riding in 115 degree temps every little bit helps.

As far as the spacer itself hurting performance, (chuckle) the spacer does nothing more than increase plenum storage and tune for a slightly lower rpm, one offsetting other for the most part with such a small (about an inch) increase. Doubt very much you could find it (improvements) on a dyno.

I don't know how tall you are, but at 5' 7" with my skinny ass parked in a stock Bob solo seat I have plenty of room to tuck my leg in behind the air cleaner against the tank. Once I get a round cover on and that safety bump carved out of the seat back so I can slide into a more comfortable position I will have even more leg room.

[floyd78]

I know the K&N comes with a spacer and should be enouth to keep it off of the engine. I use an after market cover made by dewey of deweyspegs. So I have no problems with it contacting the engine. The round nostalgic cover is part number 29138-91. I don't know if it takes the inserts like the oval on e though..

[wkohn]

Originally Posted by KKRider

petrock

At the risk of making this sound like a lecture in the fundamentals of mechanics/performance (it is) let me say this about that.

Cooler air is denser air (always). Anything one can do to cool/reduce temps of the air entering the engine, in theory at least and almost always in practice will further improve performance. When you get rid of the plastic back plate that has some insulating qualities and replace it with an aluminum one, one that is a very efficient conductor of heat you are going the wrong way in that regard. Spacing the back plate away from the heads and upper jugs will allow more air flow between the back plate and heads and the heads will also shed heat more readily. Now, if one was to make the throttle body to back plate spacer and breather spacers out of a phenolic (high insulating qualities) material you could further reduce heat transfer into the plate which in turn reduces heat transfer into the air stream. Here in Souther AZ for example where you can find yourself out riding in 115 degree temps every little bit helps.

As far as the spacer itself hurting performance, (chuckle) the spacer does nothing more than increase plenum storage and tune for a slightly lower rpm, one offsetting other for the most part with such a small (about an inch) increase. Doubt very much you could find it (improvements) on a dyno.

I don't know how tall you are, but at 5' 7" with my skinny ass parked in a stock Bob solo seat I have plenty of room to tuck my leg in behind the air cleaner against the tank. Once I get a round cover on and that safety bump carved out of the seat back so I can slide into a more comfortable position I will have even more leg room.

Instead of spacers take your backplate and send it to www.swaintech.com for a ceramic heat reflective coating. It will do more that the spacers could ever hope to in keeping intake temps low.

[KKRider]

wkohn

Actually, the people who market the hyper charger have spacers for just about anything. The swain coatings would certainly help, but the proximity to the heads has more to do with it, if you don't believe me grab an engine part that has been swain coated right after you shut the motor off, (ouch!) Getting that big backing plate away from the heads lets the heads get rid of heat a lot faster too, which in turn helps the motor run cooler, etc.

My 1200 Buell Lightning runs damn hot because of the way it's perimeter gas tank/frame holds heat into the head fins, If it weren't for the cooling fan, air scoops and ECM settings it would melt down, especially in AZ in the summer.

[sportking]

Any help in finding a replacement K & N for the S . E Marelli Injection. Same but different ! 4 hole mounting rather than 3 . OOPPPPS It got crunched

[Hammer25130]

Petrock, I know you said that you are not the one who came up with the parts list package, but thank you for posting it, I went to the dealer the other day and ordered all the parts except for the loctite (already had it) and the trim ring for the air cleaner cover (don't need it). Now waiting for some parts to be shipped as they were not all in stock, anyway thanks again for saving us cheap people some more money ! I can't wait until the parts come in so I can get my brand new Screamin' Chicken slip-ons I got off e-bay for $50.00 on my 2005 Heritage.

[MegaGlide]

Originally Posted by sportking

Any help in finding a replacement K & N for the S . E Marelli Injection. Same but different ! 4 hole mounting rather than 3 . OOPPPPS It got crunched

Most dealers still have that one in stock.
Have yours check around.
Last I knew there was one at Indy West H-D in Plainfield, IN and there was one a few months ago at Doc's H-D in Saint Louis, in their display case in front of the parts counter at the end by service.

[sportking]

MegaGlide Thanks , any chance of that part # Vrod

[point98]

Great idea.
I have a stock 2001 Dyna Lowrider with a carb. Does anyone know if these filter kit parts will work on this bike?
Thanks in advance,
Larry

[flames95]

Is Fox-Performance the only contact for the HD-0800 K&N? They raised their prices to $50.95 for the K&N...

[Roadster_G]

Originally Posted by flames95

Is Fox-Performance the only contact for the HD-0800 K&N? They raised their prices to $50.95 for the K&N...

I just received one from CycleSpot, paid $41.90. $5.95 shipping for the filter and a battery.

www.cyclespot.com

greg

[The_Snowman]

Originally Posted by flames95

Is Fox-Performance the only contact for the HD-0800 K&N? They raised their prices to $50.95 for the K&N...

Found roadrunner-performance located at Redlands, California for $39.99 plus $8.99 shipping = total $48.98

[gibby]

It is $50.95 from Fox, but there is no tax (out of state) and free shipping.

[sbeamer]

Hey, whats so different about the back plate?