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RER97

08 header help gray

9 posts in this topic

i have a 06 450 bought a used header off this website i recieved it today i believe its off a 08 the end that fits into the mid pipe silincer is bigger how can i use it and will it effect performance thanks.

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I don't know if this would work with titanium but an exhaust shop can generally expand pipes a certain amount, depending on how much it needs expanded they may be able to do it for you. It's been a while since my metallurgical classes since I'm going for mechanical engineering but you might want to call a couple of exhaust shops and ask if they can safely expand the titanium pipe without it cracking. There are a few people on here that seem to have their metallurgy down so maybe somebody will comment on the practicality of expanding titanium tubing. Sorry I wasn't more help.

Just re read your post, I thought the head pipe needed expanded. You may be able to do what I said with the midpipe though. I'm not sure what material your mid pipe is so that may affect if it can be expanded without craking or tearing.

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You can try an exhaust midpipe gasket off an 07 if you have the stock silencer. You can also buy an aftermarket silencer for an 07-08 if you want to spend the money.

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The 07'-08' are bigger diameter than the 06' was. Its not gonna work.

NO, it WILL work...................with an 08 mid gasket. They are thinner. I have done it.

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NO, it WILL work...................with an 08 mid gasket. They are thinner. I have done it.

Only if he has a stock silencer, if it is an aftermarket silencer there is no midpipe gasket.

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Only if he has a stock silencer, if it is an aftermarket silencer there is no midpipe gasket.

absolutely correct.

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Did you get this to work RER97?

I have an 07 wr450 with a 06 YZ450 can on it. With the stock WR header pipe, the can was too big to seal around the gasket properly. I have since installed an 08 YZ450 header pipe. I had to unwind the original gasket and make it thinner to fit.

I purchased an 08 YZ450 gasket, fits over the end of the header perfect but it is about 1-2mm too big to fit in the can. I'm heading to the exhaust shop today to get them to stretch it a little so the gasket fits. I should be all good after that

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