FXR carb help

[Jubba]

i wondering if some one can help.ive just cut my standard exhaust down so it goes under my engine and ends there to get it out out the way in doing this i think my carb needs to be retuned as now when i put the hammer down it is gutless as and when slowing down it choughs and splutters and back fires i no most plp would have had this problem i just dont no how to fix it
cheers

[hmurphy]

That muffler looks dangerously close to the ground. Sure it wont hit the ground going through corners with the suspension under pressure? You might have air leaks somewhere, i.e. poor welding, manifold damage etc. When I did this muffler upgrade my bike seemed to run better down bottom. I didn't have any trouble with the stock carb. In other words, you shouldn't be having any trouble!

[ducatilover]

You will need a bigger main jet. Remove the one you have and tell us what size it is, I might have some suitable ones here if it's a Keihin 393 series.

[F5 Dave]

That pipe will drag on the ground when the suspension compresses. You won't be able to ride that at Kaitoke like that so don't bother to bring it until it is fixed. Sorry not trying to be a wanka, but you should be aware that it will damage the track. As well as likely spit you off.

Also you will need nylon over parts that scrape. Again don't bother trying your luck without protection. We need to keep this track & Fish will have to fail you without it & its unfair to pressure him.

[Jubba]

Ive only had the bike three days and i havent put any nilon on at all yet as that will be my last thing to do.i have alot left to do yet and im in auckland

[F5 Dave]

3 whole days? - what have you been doing?

Your location sez wellington, but you will need nylon in Auckers too. All good, was just aware that there was 3 days left till the next Kaitoke race.

[Bert]

Ive only had the bike three days and i havent put any nilon on at all yet as that will be my last thing to do.i have alot left to do yet and im in auckland

What it is with you and your brother... one starts the other stops... Give Dave a kick.

Anyway welcome back to the dark side; give us a yell; I've got some bits for ya.

[gav]

Yeah, you will need to tuck that muffler in better, here's mine that uses the standard muffler, well, it was standard once, now been shortened etc.

[Jubba]

[QUOTE=gav;1130138997]Yeah, you will need to tuck that muffler in better,[

do i need to off set it it so it dosent cook my wheel or is it ok to hav it inline with it

[Henk]

I've done a few using the stock muffler. I run them in the center with the gases exiting to the side haven't cooked any tyres yet. If you put them on an angle you may still drag it.

[Jubba]

Do u have to cut the actual muffler its self down or just the pipe to get it to where u want it to sit.is the orignal muffler to long?

[Henk]

I've done both, the last one I did I just used the whole stock muffler to save messing about. I'll try and get some pictures tonight. With the whole muffler and the stock header they are damned quiet but still seem to perform OK.

[Henk]

There's a good thread on the FXR150 forum on how to do it here

http://www.fxr150.co.nz/discussion/v....php?f=3&t=117

I pretty much just followed what Hamish did but have the muffler exit off plane by 90 degrees to exit to the side.

[Jubba]

Does any1 have a spare muffler the can part with im gona try again.

[Jubba]

Cheers henk im gona copy that link.hopfully will be done by the next mount wellington meet,lol if i can find another exhaust as ive stuffed mine