Head pipe cracked Help!

[Kevin Snyder]

I have a 2005 CRF450R, It cuts out when you get on the throttle when taking off from a dead stop it cuts out near the bottom end. After some research one of the suggestions was to check for an exhaust leak. I replaced the gasket between the head pipe and the silencer and still no fix. Then I noticed there is about a 1" crack right at the 1st bend coming out of the barrel. I don't want to spend the $500 on aftermarket exhaust so am trying to find someone to weld it. Nobody around here welds titanium. Does anyone have any ideas or suggestions? I have found some full aftermarket exhaust for 270 for a 450X would this  work on a 450Rif i re-jet? I have seen that in the 2005 the exhaust is interchangeable between X and R, Could I use a factory 450X head pipe with the 450R silencer? Thanks folks.

[jblob]

7 minutes ago, Kevin Snyder said:

I have a 2005 CRF450R, It cuts out when you get on the throttle when taking off from a dead stop it cuts out near the bottom end. After some research one of the suggestions was to check for an exhaust leak. I replaced the gasket between the head pipe and the silencer and still no fix. Then I noticed there is about a 1" crack right at the 1st bend coming out of the barrel. I don't want to spend the $500 on aftermarket exhaust so am trying to find someone to weld it. Nobody around here welds titanium. Does anyone have any ideas or suggestions? I have found some full aftermarket exhaust for 270 for a 450X would this  work on a 450Rif i re-jet? I have seen that in the 2005 the exhaust is interchangeable between X and R, Could I use a factory 450X head pipe with the 450R silencer? Thanks folks.

Isn't the stock header pipe stainless steel? I don't think they're titanium

I would check eBay for a used 05 stock header pipe. Probably way cheaper than having yours welded or any other option mentioned. 

[Kevin Snyder]

450X is stainless the R is titanium

 

[Kevin Snyder]

34 minutes ago, Kevin Snyder said:

I have a 2005 CRF450R, It cuts out when you get on the throttle when taking off from a dead stop it cuts out near the bottom end. After some research one of the suggestions was to check for an exhaust leak. I replaced the gasket between the head pipe and the silencer and still no fix. Then I noticed there is about a 1" crack right at the 1st bend coming out of the barrel. I don't want to spend the $500 on aftermarket exhaust so am trying to find someone to weld it. Nobody around here welds titanium. Does anyone have any ideas or suggestions? I have found some full aftermarket exhaust for 270 for a 450X would this  work on a 450Rif i re-jet? I have seen that in the 2005 the exhaust is interchangeable between X and R, Could I use a factory 450X head pipe with the 450R silencer? Thanks folks.

I can purchase a new OEM 450X head pipe for around $100 dollars. I need to know if the X  head pipe will fit my 450R with the R silencer

[HRC27]

FMF PowerBomb is stainless and like $150-$160 on ebay (what I paid anyway).  Looks nicer than stock IMO.

Just saw one for $156.95 w/free shipping.

Edited April 21, 2017 by HRC27

[Kevin Snyder]

18 minutes ago, HRC27 said:

FMF PowerBomb is stainless and like $150-$160 on ebay (what I paid anyway).  Looks nicer than stock IMO.

Just saw one for $156.95 w/free shipping.

do you know if it fits the factory silencer?

[HRC27]

3 minutes ago, Kevin Snyder said:

do you know if it fits the factory silencer?

Yes it does.  Pic of an 03 with FMF PB and a stock 06 muffler. PB was a direct bolt on, muffler had to modify front mount and subframe.

Anyway, again, yes it will fit the factory muffler.

[HRC27]

Just wanted to mention that the PB slides right into the OEM muffler's internal seal and that you use the stock clamp as well.

[Kevin Snyder]

did you have to re-jet? if so what jets?

 

 

[HRC27]

13 hours ago, Kevin Snyder said:

did you have to re-jet? if so what jets?

 

 

I wanted an 06 so shifted gears and that's my current project.  Never rode this one.

However, I have run aftermarket head pipes with stock mufflers on all my CRF450R's and never had to re-jet.