K&N stage 1 kit?

[Port V.P.]

Just wondering if anyone has used a K&N stage 1 jet kit?
What were your impressions?
I picked one up from ebay, and am debating which bike to put it in. My '81 LH already goes off like a raped ape.
From the literature that came with it, I have found that I'll probably have to put some holes in the back of my air box, and it states that this is for track applications only, not legal for street use!
Any comments welcome and appreciated,
Glen.

[50gary]

Horee cow, nokidding, I was looking for one of those before I bought rebuild kits. I you don't mind, what did the jet sizes come in? How much did you get it for? If this is too personal I understand.
Cheers,50gary

[Port V.P.]

kit list

In the kit are:
4- DJ24 main jets (I think the DJ is for Dyno Jet)
4- DJ190 pilot air jets
a numbered drill bit for the slide (can't make out the number)
4- very abruptly tapered needles and clips.

considering the stock mains are 110's, and pilots are 185's for the '81 midnight and 115's / 170's for the XJ ..... so much for fuel economy once the kit is installed

a couple of years ago I was rushed to get my bike together for a trip to Calgary and back in a single weekend, I was cleaning out my carbs and jets and accidentally snapped a main when tightening it, I said "oh FUDGE" and couldn't get a replacement jet in time, so I stripped the mains and emulsion tubes from my XJ and installed them in the Midnight .... needless to say my rear tire looked like a racing slick by the end of the ride, and my old 4 into 1 header blew apart somewhere in the rockies (never did find the muffler) and that's just moving up from 110's to 115's.
I know Sid Clarke was doing alot of jet work trial and error stuff a few years back and someone brighter than I said if you go up in size on the mains you should drop a size in the pilots. Which looking at the factory sets above is exactly what those clever Japaneses did back in the day. So the kit had me wondering why the jump up in both pilots and mains??? ( thats why I put out the post for those in the know!) unless it is calculated on an increased airflow with K&N filter and a header??? I don't have a clue.

Tkat I heard the story of you passing Sid while he was busy passing everyone else once upon a time, what can you tell me about the kit?

Thanx, Glen.

[DiverRay]

Unless you have a LOT of mods done to your bike, I would TOSS the K&N kit. IF you do a search, you will find most of us think of them as JUNK!!
The jets ARE NOT sized for the bikes, and they do not use the same "numbering" as mikuni. Most of the items in the kit are usable, but NOT the main or pilot jets. Sorry for the bad news, but please do a search on K&N, and read some of the threads BEFORE you install anything.
Ray

[Brian_D]

Ray,
Do the K&N Kits use K&L jets?

Would be nice to cross those 'DJ' sizes over to Mikuni!

[DiverRay]

I'm not sure what jets they use. That is the problem. The Mikuni jet size is based on fuel flow, NOT jet diameter. If the K&N is based on diameter, it's hard to cross to a Mikuni. I try to stay with one type jet, the stock, so I or someone else can re-jet the machine easily.

[TADracer]

With the exception of the 'abruptly tapered needles' could not everything in the K&N kit be done with mikuni mains and pilots and some tuning time? I mean, someone at K&N did the same thing. I just do not see how a re-jetting kit is ever going to be an install-it-and-go type of thing. Am I wrong about this?

[Port V.P.]

Lots of "if's, assumptions, and question marks" guys, but no one seems to know any facts! So I'll just have to try it out and post the results.
I have an extra set of stock carbs so ... "nothing ventured nothing gained"

The literature states this is to coinside with either a single or seperate K&N air filters (air box removed I would assume) and if it's sucking air in better, it goes without thinking that a header or unrestricted exhaust will let her out better, again it is for
"competition and off-road use only" and "Legal in Cal. ONLY for racing vehicles which may NEVER be used upon a highway".
I already have an accel super coil set installed which pretty much doubles the stock voltage across the secondaries, so I know the big fat blue spark will ignite pretty much any amount of air/fuel I can jamb into the combustion chambers.

Once I get it done I'll post some reviews and the difference in my times at the track.

Glen.

[GNEPIG]

.. i have read somewhere on this site, that Dan Hodges had tried the K&N jet kit and couldnt tell a difference- said it was a waist of money. also read that Dan and EF Hutton are related some how
.. we are lookin forward to your reveiw of this product also, some track times, some dyno results, something.

[pggg]

V.P. dynajet or K&N kits or factorypro kits can be alright if you're looking at jetting and piping your bike preferably a 4-1 or 4-2-1. They can be cheaper than buying individual tubes, jets, needles etc. You can shuffle any amount of parts but it means lots of carb stripping for not a lot of difference.

[MAXIMAN]

I dunno about an Eleven but my 2005 ZRX1200 we used a Dynojet kit with a muzzy header.

Bone stock she pulled 108.8 at the rear wheel. After the re-tune she's now pulling a 126 hp at the rear wheel. Now that's when I say (in a bad Japanese accent) "HOREE COW!"....or is it horee kaw?

I have several friends that have used different jets on their ZRX and had no better nor worse results.

[Dan Hodges]

Originally posted by MAXIMAN
I dunno about an Eleven but my 2005 ZRX1200 we used a Dynojet kit with a muzzy header.

Bone stock she pulled 108.8 at the rear wheel. After the re-tune she's now pulling a 126 hp at the rear wheel. Now that's when I say (in a bad Japanese accent) "HOREE COW!"....or is it horee kaw?

I have several friends that have used different jets on their ZRX and had no better nor worse results.

It doesn't make any difference what jets you use as long as you have the correct size.The dyno jet and K&N kits use jets based on hole size diameter and oem jets are based on flow which is more precise but much more expensive to manufacture.The jet kits give you a drill bit to enlarge the vacum hole in the slides which causes the slides to open quicker and utilize their special needles in the kit.They also give you a 190 pilot air jet to replace the stock one which in the case of an 81 Special is 185.Going bigger on the pilot air jet leans the pilot jet mixture and going smaller on the pilot air jet richens it.The kits come with complete instructions.You can use oem jets,shim the stock needles with .025 thick washers and drill the vacum slide holes two drill sizes larger depending on your altitude and get better results for less money.Generally,motorcycles from the 80 era had main jets that were close but were very lean at idle and in the lower midrange.A box stock 80-81 Eleven Special will respond nicely to simply raising the needles .025,turning the idle screws out 2.5 turns from fully seated and leaving the stock mains at 110.There again,the Standards were jetted differently. The instructions contained in the kit I got from Dennis Kirk were the same set up for all applications (altitude) and XS models including the XJ and the XJ is a completely different animal from the XS jetting wise because it uses YICS, with special instructions stating if it doesn't work call Dyno Jet.Dennis Kirk has several of these kits and is dying to sell em at $120.00 per, so call him right away.Yes,we all know there is more than one way to skin a Kaw.I hope Cody doesn't read this,he will come to St.Louis and beat me senseless.