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2021 BMW S1000RR M Package
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Discussion Starter · #1 ·
Hey everyone. Looking for a bit of advice.

I bought SC Project’s SC1-R full titanium system from @MotoMillion and installed it a few weeks ago. I have an issue that while small, is bothering the hell out of me. At the header studs, where the flanges meet the runners (or bushings) on each cylinder, I have about a 2mm gap between the stud and the flanges (all four of em). I torqued each bolt to OEM specs, and everything is flush (headers into to the manifold as far in as they will go, bushings verified flush against the exhaust header gaskets, etc) and still this gap exists. The flange bolts are all tight (to the point where the flanges are starting to bend a bit), so tightening them anymore to get rid of the gap is not the right option. I ran the bike after the install and there appears to be no exhaust leaks. Additionally, there is no “domino affect” mis-alignment down the rest of the system which, I would assume would exist if this gap is caused by the headers not being properly seated all the way in. In other words, if they weren’t all the way in, I would think I would see that gap cascade down to the mid-pipe, muffler, etc., which is not the case.

Has anyone had or seen a similar issue? I’m still waiting on word back from Mani at @MottoMillion who reached out to SC Projects for me about a week and a half ago. I also reached out to them directly on their site, but I’ve heard nothing back. Pics below for reference.

Thanks in advance for your time.
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2021 BMW S1000RR M Package
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Discussion Starter · #3 ·
Thanks for the response. Bike only had about 1200 miles on it, but I installed new gaskets anyway.
Interesting. I would think the kit would come with some sort of spacers to account for that gap since most these kits are bike specific. Just seems a little weird to me. I’ve asked a bunch of folks and I swear I’m getting 50/50 “it’s normal” vs “that shouldn’t be there” responses. I appreciate the reply.
 

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Discussion Starter · #6 ·
Are you seeing scorching or soot around the gap? Hearing an exhaust leak?
I really haven’t ridden more than about 20 minutes since the install (to test the BT Moto Stage 2 flash, and to “break-in” the exhaust a bit). But no, no exhaust leaks heard or any scorch/soot marks visible at the manifold/headers. I’ve been hesitant to ride until I feel a bit more comfortable that “it’s alright” to do so with those gaps. Again, the headers are sure as hell flush, and all four bushings are seated and mated flat against the new gaskets - they aint going in any further. Thanks for replying.
 

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Discussion Starter · #8 ·
Forgot to ask.. is your system the 3900$ system i saw on motomillion? If so im crazy jealous.
I'd ride it then mang. If you're not seeing what I mentioned before. Good to go man. Should be at least.
It is. I waited what seemed like forever to get it. They’re made to order, which I can understand given the price point. To just have a stock of them waiting on a shelf somewhere for people to buy, I understand, is a gamble. But it finally arrived just before Christmas (after about 10 weeks), and I’m very lucky and humbled to have it. Now I just gotta get around this gap issue!! Thanks for chiming in. Much appreciated.
 

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Registered
2021 BMW S1000RR M Package
Joined
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19 Posts
Discussion Starter · #13 ·
Hey everyone. Looking for a bit of advice.

I bought SC Project’s SC1-R full titanium system from @MotoMillion and installed it a few weeks ago. I have an issue that while small, is bothering the hell out of me. At the header studs, where the flanges meet the runners (or bushings) on each cylinder, I have about a 2mm gap between the stud and the flanges (all four of em). I torqued each bolt to OEM specs, and everything is flush (headers into to the manifold as far in as they will go, bushings verified flush against the exhaust header gaskets, etc) and still this gap exists. The flange bolts are all tight (to the point where the flanges are starting to bend a bit), so tightening them anymore to get rid of the gap is not the right option. I ran the bike after the install and there appears to be no exhaust leaks. Additionally, there is no “domino affect” mis-alignment down the rest of the system which, I would assume would exist if this gap is caused by the headers not being properly seated all the way in. In other words, if they weren’t all the way in, I would think I would see that gap cascade down to the mid-pipe, muffler, etc., which is not the case.

Has anyone had or seen a similar issue? I’m still waiting on word back from Mani at @MottoMillion who reached out to SC Projects for me about a week and a half ago. I also reached out to them directly on their site, but I’ve heard nothing back. Pics below for reference.

Thanks in advance for your time.
View attachment 220546
Update: SC Project headquarters reached back out to me. An excerpt from their response attached below, in addition to a picture of their bike and how final install looks. Turns out it is normal and by design. I got the peace of mind I needed from you guys as well as direct from the source.

I appreciate everyone’s time and replies. It is much appreciated!



Font Terrestrial plant Slope Event Rectangle


Tire Automotive tire Wheel Motor vehicle Automotive lighting
 
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