big dent on header pipe on 05 WR450f
Posted May 22, 2007 - 10:27 PM
Posted May 22, 2007 - 10:38 PM
Posted May 22, 2007 - 11:11 PM
EDIT: If the bend is in the curved part and you could fill that part with water and prop it up where the water lies in the bent region and not in the unbent part you would probably be safe.
Posted May 22, 2007 - 11:45 PM
Posted May 23, 2007 - 03:52 AM
You will probably see a little reduction in top end power due to less flow. Just pull it off, fill it full of water, plug the ends and stick it in the freezer. Repeat this step a few times and the dent will work back out from the water expanding during the freezing process. Start today and it will be ready for the weekend
You don't have to plug the ends.
Just put water in it and position it in the freezer so the water is where the dent is. Keep an eye on it. you will see it start to pop a little when it starts to freeze.
Run some cold water through it to thaw it a little a freeze again, repeat until dent is gone. Just dont fill and leave it for a long period of time.
I did this with really good results.
Posted May 23, 2007 - 09:25 AM
If the one I took off mine was, then it was the heaviest Ti I've felt. Also, I just bolted a complete '06 OEM exhaust on to a '99 YZ400 and it didn't feel like it either. But, I've been mistaken before...SC
Frankly the Ti header is way to soft, and if they changed from 05' on then good for Yamaha... I have not really looked at my 07' header yet. My typical riding involves BIG rocks and the stock headers on all of my WR's have suffered over the years but the freezing trick works well.
I put a SS Power bomb on my 04' a year ago and it does not have one dent in it, seems to be a very durable product:thumbsup:
Posted May 26, 2007 - 01:03 AM
Posted May 28, 2007 - 09:50 PM
Posted May 29, 2007 - 01:14 PM
Posted May 31, 2007 - 04:58 PM
Posted June 01, 2007 - 10:53 AM
Posted June 01, 2007 - 04:03 PM
I just tried the water/freezer dent trick with great results. It took 3 freezes but popped right out. Only problem is there is a little hole in it now from whatever caused the dent. A little tack from a welder will take care of this. I've just got to find someone who can weld titanium. How can I tell if it's titanium for sure? It's an 04 and it looks and feels like titanium, but so does my buddie's 01 Wr250.
Stick a strong magnet on it, no stick, no steel. But if it is '04 OEM, you can bet it is Ti.
Posted June 26, 2007 - 06:53 AM
I sure was!! Until last night.
Dented my Ti header pre-running for the Baja 500 recently.
Sure it's not too bad. But bad enough where people see it and say "hey... your pipes dented..."
Enough to make you want to fix it right?!
- Took the header off last night.
- Added water (did not end cap the pipe or anything).
- Placed in freezer.
- Woke this am to a near perfect repair!
Here's the photos in that order;
Straight from the freezer;
Here it's not so frozen so you can see the repair a bit better. Near perfect.
Posted June 26, 2007 - 08:23 AM