GoldStar Silencer

ArizonaJim · 21st March 2012, 07:59

In my opinion it is dangerous to change the exhaust silencer on a motorcycle with a carburetor on it unless you, or your mechanic are very experienced in changing carburetor jets.

Any reduction in the exhaust gas pressure will change the way the engine breaths thru the carburetor. This almost always results in the engine running lean with too little gasoline being added to the air supply.

That can not only change the power output, in some cases making it better but often making it worse, but it can result in burning the exhaust valve and its valve seat.

Acclero should have his engine compression checked. I'm betting that it is low due to a burned exhaust valve.

Changing carburetor jets is not for the beginner. It is a long, drawn out process because there are several different things inside a carburetor that can be adjusted.
Only the right combination will give full power without causing engine damage.

The Fuel Injected models being exported to the USA have an oxygen sensor (O2) in the exhaust pipe just outside the cylinder head and the computer will use this to recognize the lean burning condition if a low restrictive silencer is used, so a special one called an EFI Silencer is sold for that motorcycle.
NField Gear: Premium Silencer for Fuel Injected Royal Enfield Motorcycles
Although the link is to the American Royal Enfield site I believe Hichcock in England is the supplier of this silencer.

Using this O2 exhaust gas reading the computer will adjust the fuel mixture to correct it to the proper ratio when this silencer is installed.

Royal Enfield does not recommend using a megaphone or other open silencers even on the fuel injected models because there is a limit to how much the computer can adjust.

As for the fuel injected models sold in India, they have no way of sensing the exhaust gas because they do not have an O2 sensor. Without this sensor their computer has no way of knowing that things need to be changed to correct the fuel/air ratio so here again, there is a good possibility that the fuel/air ratio will be too lean.

Perhaps there are silencers approved by Royal Enfield for their Indian models but I would bet they are produced by Royal Enfield, not by some other small maker who doesn't have access to the engineering knowledge that would make their product compatible.

bikham · 21st April 2012, 00:40

Quote:

Originally Posted by sans

We will be working on tail gunner by April End.

I am more and more confused now with which one to go for my DS500 .Whats the stats of tail gunner.

MCRPM · 22nd June 2012, 18:21

Riders,

I recently got a custom Goldie done on my C500. The Goldie is made out of the Stock Straight exhaust which comes with the C500 .

The issue I am facing is After-fire (While deceleration). The cracking sound comes very regularly during deceleration. Otherwise all looks good.

Are there any problems that I could land up in because of this ? Some say in EFI engines , you dont need to worry much...

Also any suggestion on the fixes ?

tharian · 22nd June 2012, 19:52

Quote:

Originally Posted by MCRPM

Riders,

I recently got a custom Goldie done on my C500. The Goldie is made out of the Stock Straight exhaust which comes with the C500 .

The issue I am facing is After-fire (While deceleration). The cracking sound comes very regularly during deceleration. Otherwise all looks good.

Are there any problems that I could land up in because of this ? Some say in EFI engines , you dont need to worry much...

Also any suggestion on the fixes ?

For the 'back-firing' , check for leaks at the head were the pipe joins the engine head and also at the joint the bend pipe is screwed to the muffler. Sometimes this can cause pop sounds on deacclerating.

Also, if you could, please post a picture of the exhaust as I am curious how a stock muffler was converted to a free flow one.

ruchirtnt · 23rd July 2012, 12:43

Quote:

Originally Posted by ArizonaJim

Royal Enfield does not recommend using a megaphone or other open silencers even on the fuel injected models because there is a limit to how much the computer can adjust.

As for the fuel injected models sold in India, they have no way of sensing the exhaust gas because they do not have an O2 sensor. Without this sensor their computer has no way of knowing that things need to be changed to correct the fuel/air ratio so here again, there is a good possibility that the fuel/air ratio will be too lean.

Oops, i really missed this comment

and using megaphone from a long time on my DS500, i think i better get rid of this

mshooli · 26th October 2012, 07:38

Hello All,

Need an advice here. I have a 2010 Electra 5S with a RE showroom fitted short bottle silencer. I want to now go in for the Goldstar silencer. The SANS Goldstar is priced at Rs. 1700/- while the one being sold at the official RE service center is Rs.3800/-. Is there any difference between the two ? And is it worth buying the Goldie from the RE folks ?

abeerbagul · 26th October 2012, 09:08

I have a SANS goldstar fitted onto my Classic 500, using it for past 10000 kms. It was fitted the moment running in was over.

Till now, no issues, either of power or mileage. The look is very "British" and sound is awesome. It is mute in traffic, and opens up on highways. It does pop on rapid deceleration, but I like that.

I dont think the dealer's silencer would have any extra technical improvement, for all you know it might be the same internally.

Blazkowicz · 26th October 2012, 23:18

Quote:

Originally Posted by mshooli

Hello All,

Need an advice here. I have a 2010 Electra 5S with a RE showroom fitted short bottle silencer. I want to now go in for the Goldstar silencer. The SANS Goldstar is priced at Rs. 1700/- while the one being sold at the official RE service center is Rs.3800/-. Is there any difference between the two ? And is it worth buying the Goldie from the RE folks ?

The RE guys seem to be charging you quite a premium for the silencer. Try to find out which Goldstar is that. In any case, the SANS Inc Goldstar is a great silencer. It now comes in two variants, one with glass wool costing around 2300 and another one with conical baffles which costs 1700. The glass wool version gives a bassier thump and is somewhat quieter than the one with conical baffles but it does cost more. Since you have a CI bullet, thump shouldn't be an issue and you can opt for the cheaper variant.

mshooli · 27th October 2012, 13:52

Quote:

Originally Posted by Blazkowicz

The RE guys seem to be charging you quite a premium for the silencer. Try to find out which Goldstar is that. In any case, the SANS Inc Goldstar is a great silencer. It now comes in two variants, one with glass wool costing around 2300 and another one with conical baffles which costs 1700. The glass wool version gives a bassier thump and is somewhat quieter than the one with conical baffles but it does cost more. Since you have a CI bullet, thump shouldn't be an issue and you can opt for the cheaper variant.

Mine is a 2010 Electra and comes with the UCE engine. So thump is a bit of an issue here.

I had been to the RE service center to pick up my bike today and I once again enquired about the price and make. The price is 3200/-. I must have heard it wrong the last time. But even then this is pretty high.They did not tell me anything about the make. I was just told that they procure it from outside. I think I will go with the SANS Inc. glasswool variant. Thanks for your suggestions.

sans · 5th November 2012, 09:16

Hey guys
Am happy to see you all delighted with our goldstar Exhausts.
It makes us a feel motivated and enables us to word harder for a better thumping World.
Do let me know in case you have any doubts.

sheshgiri.kini · 16th May 2013, 23:14

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We advise you to read the Forum Rules before proceeding any further, and to prevent your account from being permanently disabled.

TaurusAl · 17th May 2013, 11:44

Quote:

Originally Posted by sans

Hey guys
Am happy to see you all delighted with our goldstar Exhausts.
It makes us a feel motivated and enables us to word harder for a better thumping World.
Do let me know in case you have any doubts.

Any options for the new TBTS 350 ? The service guys told me the silencer is one piece and just the exhaust cannot be changed. If at all, one will have to change the whole assembly right from the bend pipe.

TaurusAl · 17th May 2013, 16:09

Thanks, looks great.

Some questions -

1) Is the original bend pipe cut to weld this one ? (I can see a welding park)

2) Is this one a free flow ?

3) What is the difference between concial baffles & Glasswool in terms of performance and sound ?

hiren959 · 17th August 2013, 12:50

Which one is louder comparing between Conical baffles and Glasswool??

tharian · 17th August 2013, 13:30

Quote:

Originally Posted by hiren959

Which one is louder comparing between Conical baffles and Glasswool??

Conical is louder. Glasswool is louder if the glasswool is removed in the removable type muffler.

21st March 2012, 07:59	#271
ArizonaJim Senior - BHPian Join Date: Aug 2011 Location: Phoenix, Ariz. Posts: 1,200 Thanked: 2,845 Times	Re: GoldStar Silencer In my opinion it is dangerous to change the exhaust silencer on a motorcycle with a carburetor on it unless you, or your mechanic are very experienced in changing carburetor jets. Any reduction in the exhaust gas pressure will change the way the engine breaths thru the carburetor. This almost always results in the engine running lean with too little gasoline being added to the air supply. That can not only change the power output, in some cases making it better but often making it worse, but it can result in burning the exhaust valve and its valve seat. Acclero should have his engine compression checked. I'm betting that it is low due to a burned exhaust valve. Changing carburetor jets is not for the beginner. It is a long, drawn out process because there are several different things inside a carburetor that can be adjusted. Only the right combination will give full power without causing engine damage. The Fuel Injected models being exported to the USA have an oxygen sensor (O2) in the exhaust pipe just outside the cylinder head and the computer will use this to recognize the lean burning condition if a low restrictive silencer is used, so a special one called an EFI Silencer is sold for that motorcycle. NField Gear: Premium Silencer for Fuel Injected Royal Enfield Motorcycles Although the link is to the American Royal Enfield site I believe Hichcock in England is the supplier of this silencer. Using this O2 exhaust gas reading the computer will adjust the fuel mixture to correct it to the proper ratio when this silencer is installed. Royal Enfield does not recommend using a megaphone or other open silencers even on the fuel injected models because there is a limit to how much the computer can adjust. As for the fuel injected models sold in India, they have no way of sensing the exhaust gas because they do not have an O2 sensor. Without this sensor their computer has no way of knowing that things need to be changed to correct the fuel/air ratio so here again, there is a good possibility that the fuel/air ratio will be too lean. Perhaps there are silencers approved by Royal Enfield for their Indian models but I would bet they are produced by Royal Enfield, not by some other small maker who doesn't have access to the engineering knowledge that would make their product compatible.
	(9) Thanks

22nd June 2012, 18:21	#273
MCRPM Newbie Join Date: Nov 2008 Location: Bangalore Posts: 13 Thanked: 0 Times	Re: GoldStar Silencer Riders, I recently got a custom Goldie done on my C500. The Goldie is made out of the Stock Straight exhaust which comes with the C500 . The issue I am facing is After-fire (While deceleration). The cracking sound comes very regularly during deceleration. Otherwise all looks good. Are there any problems that I could land up in because of this ? Some say in EFI engines , you dont need to worry much... Also any suggestion on the fixes ?
	() Thanks

26th October 2012, 07:38	#276
mshooli BHPian Join Date: Jun 2008 Location: Bangalore Posts: 138 Thanked: 6 Times View My Garage	Re: GoldStar Silencer Hello All, Need an advice here. I have a 2010 Electra 5S with a RE showroom fitted short bottle silencer. I want to now go in for the Goldstar silencer. The SANS Goldstar is priced at Rs. 1700/- while the one being sold at the official RE service center is Rs.3800/-. Is there any difference between the two ? And is it worth buying the Goldie from the RE folks ?
	() Thanks

26th October 2012, 09:08	#277
abeerbagul BHPian Join Date: Dec 2007 Location: Pune Posts: 165 Thanked: 303 Times	Re: GoldStar Silencer I have a SANS goldstar fitted onto my Classic 500, using it for past 10000 kms. It was fitted the moment running in was over. Till now, no issues, either of power or mileage. The look is very "British" and sound is awesome. It is mute in traffic, and opens up on highways. It does pop on rapid deceleration, but I like that. I dont think the dealer's silencer would have any extra technical improvement, for all you know it might be the same internally.
	(1) Thanks

5th November 2012, 09:16	#280
sans BHPian Join Date: Jan 2009 Location: New Delhi Posts: 80 Thanked: 4 Times View My Garage	Re: GoldStar Silencer Hey guys Am happy to see you all delighted with our goldstar Exhausts. It makes us a feel motivated and enables us to word harder for a better thumping World. Do let me know in case you have any doubts.
	() Thanks

16th May 2013, 23:14	#281
sheshgiri.kini Newbie Join Date: Feb 2013 Location: hubli Posts: 3 Thanked: 0 Times	Re: GoldStar Silencer Mod Note : Using Team-BHP to promote vested and commercial interests is STRICTLY prohibited. Do refrain from marketing your goods / services on this board. We advise you to read the Forum Rules before proceeding any further, and to prevent your account from being permanently disabled. Last edited by moralfibre : 17th May 2013 at 07:37.
	() Thanks $Received Infraction$

17th May 2013, 16:09	#283
TaurusAl BHPian Join Date: Mar 2011 Location: Mumbai - MH 01 Posts: 615 Thanked: 551 Times	Re: GoldStar Silencer Thanks, looks great. Some questions - 1) Is the original bend pipe cut to weld this one ? (I can see a welding park) 2) Is this one a free flow ? 3) What is the difference between concial baffles & Glasswool in terms of performance and sound ? Last edited by GTO : 21st March 2014 at 17:59. Reason: Quoted post deleted
	() Thanks

17th August 2013, 12:50	#284
hiren959 BHPian Join Date: Nov 2009 Location: Ahmedabad Posts: 345 Thanked: 71 Times	Re: GoldStar Silencer Which one is louder comparing between Conical baffles and Glasswool??
	() Thanks