900rr conversion, help - Wrist Twisters
 
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post #1 of 10 Old 09-26-2010, 03:35 PM Thread Starter
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900rr conversion, help

While removing the stock 919 header, I noticed I didnt see any header gaskets. Does the stock header have gaskets? Im not much of a motorcycle mechanic but Im pretty sure it should have gaskets. I bought the bike brand new 07 919. I changed out the header with a 98 900rr header. I didnt use any gaskets just to try the new header out, definatley leaking, can hear it. Also it started smoking after warming up, burning smell,would that be normal with no gaskets? Your help would be appreciated.

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post #2 of 10 Old 09-26-2010, 03:50 PM
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They are most likely smushed up inside the exhaust ports. Copper color. I had to pick them out with a screwdriver.

They will look like the used ones in this pic


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post #3 of 10 Old 09-26-2010, 03:52 PM
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Yep. There are gaskets. See here.

Ronayers.com Fiche Desktop Motorcycle Honda 2002 CB900F MUFFLER

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post #4 of 10 Old 09-26-2010, 04:40 PM Thread Starter
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I appreciate the quick responses. I feel like such a dumb arse. I was looking right at them and they just blended in. Im going to pick some gaskets tomorrow and give it another shot, hopefully no exhaust leaks. Ill tell the 900rr header on the 919 looks good! I cant wait till its fully done. Anyone else ever had problems with the 900rr header with leaks? I hope I have the right year that matches up right, it supposed to be off a 98 cbr900rr 4-2-1. It was a little off on one of the ports but pryed up on it, popped right in.

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post #5 of 10 Old 09-26-2010, 06:28 PM
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Yeah get those gaskets in, and as far as the header being off one port.....That really shouldnt happen?? Did you have to "make it" fit? I just got done with my conversion and its awesome! Best mod

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post #6 of 10 Old 09-27-2010, 03:18 PM
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put some grease on the gaskets before you put them on. It will help them stick in there, plus seal the deal. That's probably why the old one's blended in and were stuck in there anyways, old grease.

Oh, and the burning smell was probably from whatever was on the new headers - dirt, gunk, finger oil, paint, etc. Mine did the same thing right after I got them ceramic coated until I took them for a nice slow ride (get hotter that way). Burned off all the smell in 5 minutes and now don't smell a thing. Just smashed bugs in the visor.

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post #7 of 10 Old 09-27-2010, 04:07 PM Thread Starter
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Yeah I was wondering how to get those gaskets to stay in. Also these headers heat up more than the stock ones. Im going to buy a pc3 this week to lean out the fuel mixture. These bikes run rich which would definatly heat these headers up more.

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post #8 of 10 Old 09-27-2010, 06:24 PM
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I'm pretty sure a lean mixture would actually heat those headers more.

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post #9 of 10 Old 09-27-2010, 07:23 PM
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Quote:
Originally Posted by simeonov View Post
I'm pretty sure a lean mixture would actually heat those headers more.
Correct.

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post #10 of 10 Old 09-29-2010, 09:58 AM
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+1 to both above. Also, I'm assuming the bike wasn't moving when you had these headers mounted up?

They get hot quick with no airflow.

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