scrambler fcr39 jetting with zard low cross - Triumph Forum: Triumph Rat Motorcycle Forums

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post #1 of 33 (permalink) Old 10-21-2012, 05:08 PM Thread Starter
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scrambler fcr39 jetting with zard low cross

Hi there, I know there are lots of threads on fcr39 jetting but not having any luck finding what I'm looking for. Just curious if anyone has a similar scrambler set up as me and wonder what your jetting/needles are set to

Fcr39 / airbox removed (using unifilters) / Zard low cross / stock cams originally it was set up for TORs but with the zard it seems to be lean. For the needle I'm on the 3rd groove from the bottom (2 grooves showing) - still lean even at 160 mains...

Thanks in advance !

This pipe is awesome btw will post video soon

2008 Scrambler, BC-ARK, FCR39, Zard, TPUSA 813 cams, Works/Progressive suspension, other stuff
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post #2 of 33 (permalink) Old 10-24-2012, 01:43 AM Thread Starter
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Ventura was kind enough to point me to this awesome link. Problem solved
Thanks Ventura!

http://www.triumphrat.net/twins-tech...ings-here.html

Man I love this pipe

2008 Scrambler, BC-ARK, FCR39, Zard, TPUSA 813 cams, Works/Progressive suspension, other stuff

Last edited by WhoIsHayley; 10-25-2012 at 05:36 PM.
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post #3 of 33 (permalink) Old 10-24-2012, 03:44 PM
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Quote:
Originally Posted by WhoIsHayley View Post
Ventura was kind enough to point me to this awesome link.
http://www.triumphrat.net/twins-tech...ings-here.html
Problem solved
Thanks Ventura!
Glad to hear you're getting the jetting sorted Whoishayley!

And your bike is lookin' great with the pipes!!

Here's my Scram in its days with the Cross 'silencer'!?........



V.

2006 Scrambler, VARK'd, FCR39's & DNA's, 790 In-cam, Pieman'd igniter, Zard 2:1.
2005 Thruxton Black, with ARK, FCR 39's & Uni's, Retimed 790 cams, Barnett clutch and suchlike!!
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post #4 of 33 (permalink) Old 10-24-2012, 06:41 PM
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Nice Scrams, gents.

Tried the referenced link twice & both times it pointed to the main page & not a specific thread...
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post #5 of 33 (permalink) Old 10-24-2012, 11:14 PM
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This is the correct link to FCR settings...........

http://www.triumphrat.net/twins-tech...ings-here.html













V.

2006 Scrambler, VARK'd, FCR39's & DNA's, 790 In-cam, Pieman'd igniter, Zard 2:1.
2005 Thruxton Black, with ARK, FCR 39's & Uni's, Retimed 790 cams, Barnett clutch and suchlike!!
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post #6 of 33 (permalink) Old 10-25-2012, 05:25 PM Thread Starter
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Quote:
Originally Posted by Ventura View Post
Glad to hear you're getting the jetting sorted Whoishayley!

And your bike is lookin' great with the pipes!!

Here's my Scram in its days with the Cross 'silencer'!?........



V.
This is the pic that helped me make the decision to go low
btw did you ever have the bird chirp with the low cross?
I don't mind it but just curious if you had it too?

2008 Scrambler, BC-ARK, FCR39, Zard, TPUSA 813 cams, Works/Progressive suspension, other stuff
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post #7 of 33 (permalink) Old 10-25-2012, 06:31 PM
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btw did you ever have the bird chirp with the low cross?
I don't mind it but just curious if you had it too?
I dont recall any bird-chirping, or any other kind of whistling, with the pipes.
The fit between header and silencer was spot-on so unlikely from there.

I do remember tho, with the Cross fitted, an occasion where I started the bike up and it gave the biggest backfire imaginable, sending birds flying out the trees and the locals diving for cover!!








V.

2006 Scrambler, VARK'd, FCR39's & DNA's, 790 In-cam, Pieman'd igniter, Zard 2:1.
2005 Thruxton Black, with ARK, FCR 39's & Uni's, Retimed 790 cams, Barnett clutch and suchlike!!
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post #8 of 33 (permalink) Old 10-25-2012, 06:39 PM
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Thanks V.
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post #9 of 33 (permalink) Old 10-27-2012, 09:04 AM
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Hello WhoIsHayley
i have the same exhaust and air filter on my scrambler and wonder what jetts you ended up with, I couldn't fined any post from you and your setting on the site you recommended.
So i would be glad if you could tell me.
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post #10 of 33 (permalink) Old 10-27-2012, 09:28 AM
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Mine has that twittering sound. I read here that you can eliminate it by taking out the center post at the back. I don't find the sound that upsetting so I haven't modified the can..
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