Re: Red hot exhaust manifold issue

Topic Approved & moved to Help Section.

As far as I can say, the exhaust pipe heating up to untouchable levels is a pretty normal thing to happen. I too have a RC exhaust, it was very hot even after a 3 kms commute.

However, I never checked if the exhaust glows red in darkness as you showed in your pics... Guys, can anyone else confirm this?

Re: Red hot exhaust manifold issue- RC Exhaust.

Sorry to say, but if you want headache free days ahead, throw the junk you got from RC ASAP! My replies are in bold above.

Re: Red hot exhaust manifold issue- RC Exhaust.

I will be doing the replies in two parts :

Reply 1- I chose bad mechanics, they messed up with the cam timings. I had to study till 6 AM about engines and supervise the next day with them. The issue was that a part of gases were burning in the manifold due to odd timings. I got it fixed and yeah the red hot manifold is gone, but it still gets hot more than normal, had a word with a few guys from here and my other friends. They do admit that FFE tend to get hot, and since this one is a light weight, this has a lot of tendency to show up the change in temperature. Ofcourse with lighter material there is a risk. Think of it this way, Why would Yamaha build an exhaust which is heavier than my barbell

Reply 2 - This one is more of offtopic, I did had a look at that thread. It is certainly a huge thread and it is not feasible for me to read it all. But I did had a glimpse of that. I would like to mention a few things
1. I do agree that I found rusts on a few parts, like exhaust and inners of the cam but got it cleaned before installation. Also the delays mentioned there, With a career going in parallel, I do think it may take time for deliveries. In my case there were a few alarms too, but I dealt with them.

2. A work done on anything is always collaborative. One company is not to be blamed for this. A part may or may not have an issue, a mechanic may or may not be able to install things properly. Even still after all the work done, I can be definitively sure of the fact that there is an odd noise in engine, which I need to look at.

3. When you modify things, it is indeed a risk always. Like in my case, I am in north India, and purchased parts from south India. It isnt easy at all for me to file a claim if anything goes wrong. I always knew this. Also the mechanics are always a luck, I am yet to meet a mechanic who works good. The thing ends down to that given the risks involved you always have to take a less harming way. There will be a harm done always.

4. If things ever go wrong, say in my case bigbore goes kaput or any other part, due to whatsoever reason, like mechanic or the bad part. Remember, it is always a gamble when you are modifying. Install a daytona kit and do it in a bad way, You will have a tough luck to claim to anyone. It's India, you cant even complain to Yamaha if they install parts in a bad way.

I am not blaming anyone or taking a side of anyone, when I went for mods, I always knew the risk involved. It's a gamble. And no I am not a rich brat, The mods and installation cost me 2 months of salary.

Re: Red hot exhaust manifold issue- RC Exhaust.

Since you know the risks involved, I won't say a thing but let me clarify things over the 2 lines quoted above.

1. People from Bangalore (BLR) haven't been able to get stuff corrected/file a complaint against him, so North India is a long shot.
2. Since you have spent 2 months' salary on it, I'd wish you not spend 2 more months salary extra on maintenance. A mech can only screw the build, but any mech can't give a perfect build with RC products because Mr JJ only supplies some B grade parts and doesn't tune anything.

Good luck with the kit. Now that you've got the kit, I'd suggest you to read that thread in full. You may find your story in there, soon!

Re: Red hot exhaust manifold issue- RC Exhaust.

I think you're running quite lean, just pop the spark plug and check the colour on the tip. You'll need to get your AFR adjusted, find a SC with an FID tool, this will help. Do this very soon or your valves will get fugged at the least.

Re: Red hot exhaust manifold issue- RC Exhaust.



Hey, Can you tell me what an FID tool is? cant seem to find anything on it on google. I am familiar with adjusting AFR for carbs but never knew if that can be done on a stock ECU. Can you tell me something more about this ?

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Well, the thing has already been done. I would rather play with it and when it becomes a pain in the ass, revert back to stock . I think reverting back to stock shouldn't cost a bomb, I already have the concerned parts with me. I can definitely read the thread but considering my pessimistic nature, I would skip that and do that when a problem occurs.

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I will soon post an entry about my experience. And I will try to be as transparent as I can and try to describe things going on in a modification. This might upset some, might enlighten some. I hope none takes it personal.

Re: Red hot exhaust manifold issue- RC Exhaust.

Your bike is running very lean. You are going to end up either with burnt valves or with a engine seizure. Either way your engine is not going to last more than couple of thousand kilometers unless you address the fueling issue.


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Re: Red hot exhaust manifold issue- RC Exhaust.

Hey abhimanyu, the redness is gone. However do you have any idea on if fueling needs to be corrected after installation of the setup like I did. And if yes, in what way this is to be done?

Re: Red hot exhaust manifold issue- RC Exhaust.

Yes, the fueling needs to change. Ideally the fueling and ignition needs to be adjusted by doing multiple dyno runs along with a fully programmable ECU. However, if you are using a stock ECU there is very little scope for adjustment of fueling. Your bike will run lean no matter however much you adjust the AFR as the stock unit was never designed to accommodate these type of changes.

Getting the fueling right is going to be a major challenge for you. Without the right fueling you will never get the performance such a setup should give you. As as matter of fact it could lead to various problems which will ultimately end up in a catastrophic brake down.


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Re: Red hot exhaust manifold issue- RC Exhaust.

I dont really have that much moolah left to invest in a programmable ECU. What are my options on getting fueling right as of now?

Re: Red hot exhaust manifold issue- RC Exhaust.

[MENTION=66122]avin45h[/MENTION] firstly why do you go for these kind of mods bro. . ? This is one of the foolest things a person can do. . . Just think about it, I was also a guy like you who wanted more but eh, you should had thought like me, which would had helped you today. . . Spending money that is double as your monthly salary for some shit is called nothing but foolishness. . . What was the need for it in first place. . ? Not everyone have R15, at least like you, learn to be happy with what you have. . . These kind of mods are not good for your bike, they just last for not too long, at least you should had consulted any one of us or the seniors in Xbhp before doing this. . .

Anyways, now that it's all over, nothing can be done, except people here can help you out with what you can do to keep your bike running neatly. . .
[MENTION=32286]psr[/MENTION] sir, another victim, kindly pour your points and hope you can help this chap. . .

Avin one advice from my side, the next time you try out these kind of stuffs, please get some help from an experienced person, they will guide you in proper route. . .

Cheers!!!

Re: Red hot exhaust manifold issue- RC Exhaust.

As I mentioned in my earlier post, the stock ECU is not going to do the job for you. It just does not have the range of adjustment for such changes. You will need to go for a programmable ECU. There is no other choice.

However, obtaining a programmable ECU is the easy part. Making or getting the right fuel and ignition map is going to be a major challenge for you. Creating accurate fuel and ignition map requires dyno run based tuning. If a dyno is not available then your only realistic option is to find a experienced tuner who has intimate knowledge of this type of setup and it's fueling needs.

There are no other options to the above.


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Re: Red hot exhaust manifold issue- RC Exhaust.

I see, but a programmable ECU is a costly affair, right?

Re: Red hot exhaust manifold issue- RC Exhaust.

I don't know the current pricing, you will need to find that out. Before I sign off from this thread, here is my most sincere advice to you based on my experience;

Till such time that you are able to find a solution to the fueling problem, it would be prudent for you to return your bike to stock tune. Otherwise as sure as the sun rises everyday, you are going to end up with a blown engine. No ifs', no buts', no maybes', no could bes', it WILL happen.


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