pilot Jet ?



25 replies to this topic
  • 94FIREHAWK

Posted July 10, 2002 - 07:54 PM

#1

im going change my 99 wr to yz timeing i am going to change my pilot jet to a 48 do i need to get two pilot jets one for air and the other for gas?

  • Taffy

Posted July 10, 2002 - 09:10 PM

#2

buy a bucket and poor it in with that!

what the hell possess you to want to put a 48PJ in anyway. it's not like anyone here is running them is it?

i didn't even touch my jetting when i did the timing change. if you have a #75PAJ you need a 40 PJ or 42 max.

go into search and find jetting Q's and learn something new!

sorry if i sound blunt-i am-but it's like watching "timmy the trains nine hour epic of war, peace and how to make a cup of tea".

Taffy

  • neWRiver

Posted July 10, 2002 - 09:58 PM

#3

The YZ timing change is not a mod that really requires re-jetting.

There are lots of things you CAN do in the area of jetting on a '99 WR to wake it up, though. Do check out the thread "jetting Q's" as Taffy suggested. Personally, I think it reads a lot like "timmy the trains nine hour epic of .." :) , but there is some very good info in there. There are other threads as well and the search button will yield lots of good reading on the subject of jetting.

:D

  • Ynahg

Posted July 10, 2002 - 11:08 PM

#4

Firehawk,

You have a '99 WR, what are you waiting for.
Clone taffy's jetting specs. I can assure you you won't be dissapointed.

Doubted for a long time and couldn't get the right jets and needle over here. So don't doubt.

Ever thougt about a telepathic controlled throttle response ? That's what you can get.

Good luck

  • Dodger

Posted July 11, 2002 - 05:15 AM

#5

Taffy....LMAO......love the timmy the trian ref!

Dodger :) :D

  • 94FIREHAWK

Posted July 11, 2002 - 10:59 AM

#6

taffy
I was looking the wr/yz jeting examples from around the world page and a lot of people list a 48 under pilot if not pilot jet what are they referring to?

  • Taffy

Posted July 11, 2002 - 11:16 AM

#7

it's very simple to nullify all glitches in throttle response by deadening them with lots of fuel.

it really is that simple.

it's like a reality check that some people want to avoid. it's easier to dull the throttle than have a cough or glitch and get it sorted.

most people have to come back here and say that it didn't work first time what's so different about my bike?

a couple of little tests and a chat and everyone is on their way with the equivelant of an enduro and a mountain goat all in one.

don't get me wrong, if you want to try anything i/we'll help all we can so go for it.

Taffy

  • CHris_PArks

Posted July 11, 2002 - 11:43 AM

#8

ynahg,


you seem to have about the same stuff on your bike as me. i have the same jets a needle as you but i put the clip on #5 becaise taffy said to drop it if you have a pipe on it and go up 10 on the main from his settings. how is the mid on your bike and have you tried it both ways. i don't know how mine is cause i need a new left radiator before i can start it.

  • tbronc

Posted July 11, 2002 - 03:44 PM

#9

Are the jetting ex. from around the world still on the site?

2 or 3 years ago a 48 was the most popular pilot.

Then Clark, JD and most recently Taffy really shook things up by testing and sharing their results w/us.

  • Ynahg

Posted July 11, 2002 - 09:15 PM

#10

Chris,


My needle pos. ideed is clip #5 oups. :)

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  • freestyle111

Posted July 12, 2002 - 12:27 AM

#11

i use a 48 or 50 pilot[depending on conditions].my bike runs great jetted with 48pj,dvp nj 3rd clip,185mj and fuelscrew 2turns out.im sure taffys jetting recommendations working great for some people[depending on where they ride]but i tried taffy's emm setup and bike ran like crap.im not sure if its because of altitude and climate where i ride or because my motor isnt stock[hp cams,big bore kit,head ported and p-48]

  • Taffy

Posted July 12, 2002 - 12:06 PM

#12

like i said...

Taffy

  • 94FIREHAWK

Posted July 13, 2002 - 07:06 AM

#13

ok im going to try jeting the taffy way.
I need to know where you guys are geing your jets
and the part numbers?
I have 99 WR i ride mostly low to mid rang D&D pipe and header open exhaust system im thinking of changing over to yz timeing.
hear are jets think i will try and need part No.
EMM Needle
35 pj
55 paj
60 sj
155 mj
160 maj

  • Taffy

Posted July 13, 2002 - 11:43 AM

#14

i didn't catch your altitude but if you're over 2,000ft i would get an EMN. the "PAJ" should be a "pilot air screw" which you adjust and is whichever jet you want it to be.

other than that i would get a 38 PJ as back up and also get ready to do the Taff mod by getting your little model collars ready.

Taffy

  • BlueFox

Posted July 13, 2002 - 11:56 AM

#15

94Firehawk,

  • BlueFox

Posted July 13, 2002 - 11:57 AM

#16

94Firehawk,
Is this the kind of car you have? I have a '94 Trans-am and remember seeing the Firehawk in magazines. Very nice!
Keith

  • Guy

Posted July 13, 2002 - 11:58 AM

#17

:) Did one of the last bits of the jigsaw today............changed my pilot circuit for a smaller one, I've gone to a 35...might be a tad lean there but it's still better than the 42 I've been on, I changed the PAJ to the adjustable screw and have that set at 55 A la Taffy
I thought it was crisp before this, but NO....now it is crisp, I gonna try the 38 as well and Taffy, I'm gonna change the DMM for a DRM (I cant get a DTM), just to raise the needle from the clip #1 :D

  • 94FIREHAWK

Posted July 13, 2002 - 12:29 PM

#18

bluefox yes this is the kind of car i have #485 315hp
taffy
I stll need to know where you guys get your jets from i dont think my yamaha dealer will be much help with out some part numbers

  • Taffy

Posted July 13, 2002 - 08:56 PM

#19

firehawk

everything is on jetting Qs i think. JD put them there.

guy
keep playing with it guy, i don't think you'll make it run lean. and anyway if you recall i said "after i'd finished, i reflected and realised that the PAS had always played catch up and that all along the PAS needed to be #45 to match the 35PJ"....

so before you go up on the jetting go down on the PAS.

the needle seems a great idea, i wish i'd put that original post up as a DTM and not DMM post but there you go.

Taffy

  • Bill

Posted July 14, 2002 - 12:51 AM

#20

Fire,

The Hawk is a nice car but, I'll take my 67 Chevelle anyday. I have a 99 and worked with taffy to come up with the configuration in my signature. Don't mess with the dealer call Sudco.

Bill




 
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