The Best Perfoming Exhaust for your Bike...... PIXs of Mufflers

GoFast..... · January 30, 2009, 01:53:53 PM

I finished the head flow TB body Testing so it is on to the exhaust. Here is an asortment of exhaust the at I have been collecting to inspect and test.The one that I have seen so far that looks the most impressive is The Bassini Road Rage. Its got a step header on it. I also have to weld bungs on several of them.

supertrapp, Bassni Road Rage, D&D FatCat. White Bros 2 into 1, Rhinehart true duals
My son also has a thunerheader on his bike but I do not think he would like me taking it off

roadglide65 · January 30, 2009, 02:08:32 PM

If your going to do some testing,, Take the FatCat and put the supper meg muffler on it and see what you come up with.

bigpete1 · January 30, 2009, 02:11:15 PM

what is the bike you are comparing ?i know what you are doing with motor just wondering softail ,dyna or dresser ?i do not think will get equal comparison some of the pipes you have are the short version for dyna and softails and other are or touring bike i run e series on my dyna and supermeg on my dresser i have almost enough pieces to put e series on the dresser .thanks pete

Hoist! · January 30, 2009, 02:29:16 PM

Did a buncha testing on a decently built 110 that was designed by CR to use a 58mm HPI TB. It tested like crap with duals. Then we tried a V&V 2:1. Got a lil better. Then tried it with a FatCat w/Quiet muffler. Got much better. Then we tried it with theFatCat with the Big Bore muffler. And it took off. Best numbers we got. Of course we didn't try testing every exhaust system, but that Big Bore FatCat was enough to satisfy us that we found the right exhaust for the motor setup. Until we called Wes to send us a 62mm HPI TB w/the HPI hi flo A/C assembly. Not really much better peak numbers than with the 58, but the whole bottom of the curve moved up and wound up with a really nice straight torque curve. Over 100 at 2 grand, peaking at 126 at 4 grand, and never dropping to 100 til 6 grand. The 110 HD heads need a lil work, needs good cams, and a lil more compression, but we found it REALLY needs GOBS of flow to perform admirably. But perform it will if ya get it right!!!

Hoist!

blk-betty · January 30, 2009, 02:56:10 PM

Is that s Supertrapp Supermeg in your pic or a Supertrapp/Kerker?

It doesn't look like it has any tuning discs in it like a Supermeg, looks more like the Kerker with the fixed baffle but it may just be the angle of the pic.

GoFast..... · January 30, 2009, 07:28:03 PM

Quote from: blk-betty on January 30, 2009, 02:56:10 PM
Is that s Supertrapp Supermeg in your pic or a Supertrapp/Kerker?

It doesn't look like it has any tuning discs in it like a Supermeg, looks more like the Kerker with the fixed baffle but it may just be the angle of the pic.

it a supertrapp that is adjustable

GoFast..... · January 30, 2009, 07:38:31 PM

Quote from: Hoist! on January 30, 2009, 02:29:16 PM
Did a buncha testing on a decently built 110 that was designed by CR to use a 58mm HPI TB. It tested like crap with duals. Then we tried a V&V 2:1. Got a lil better. Then tried it with a FatCat w/Quiet muffler. Got much better. Then we tried it with theFatCat with the Big Bore muffler. And it took off. Best numbers we got. Of course we didn't try testing every exhaust system, but that Big Bore FatCat was enough to satisfy us that we found the right exhaust for the motor setup. Until we called Wes to send us a 62mm HPI TB w/the HPI hi flo A/C assembly. Not really much better peak numbers than with the 58, but the whole bottom of the curve moved up and wound up with a really nice straight torque curve. Over 100 at 2 grand, peaking at 126 at 4 grand, and never dropping to 100 til 6 grand. The 110 HD heads need a lil work, needs good cams, and a lil more compression, but we found it REALLY needs GOBS of flow to perform admirably. But perform it will if ya get it right!!!

Hoist!

if the big bore gets you to the noise level of a BORZILLA I can't handle it. I had a Boarzilla on a 114. It so loud that one time I had it dynoed at a hd shop that has to listen to bikes everyday on the dyno. When I went to pick it up the service guys come over and said what king of pipes do you have on that bike. Its the loudest bike we ever heard. It dynoed out great. Something like 134hp, But I had to take it off, it even gave me a headache

Hoist! · January 30, 2009, 08:30:24 PM

Quote from: GoFast..... on January 30, 2009, 07:38:31 PM
Quote from: Hoist! on January 30, 2009, 02:29:16 PM
Did a buncha testing on a decently built 110 that was designed by CR to use a 58mm HPI TB. It tested like crap with duals. Then we tried a V&V 2:1. Got a lil better. Then tried it with a FatCat w/Quiet muffler. Got much better. Then we tried it with theFatCat with the Big Bore muffler. And it took off. Best numbers we got. Of course we didn't try testing every exhaust system, but that Big Bore FatCat was enough to satisfy us that we found the right exhaust for the motor setup. Until we called Wes to send us a 62mm HPI TB w/the HPI hi flo A/C assembly. Not really much better peak numbers than with the 58, but the whole bottom of the curve moved up and wound up with a really nice straight torque curve. Over 100 at 2 grand, peaking at 126 at 4 grand, and never dropping to 100 til 6 grand. The 110 HD heads need a lil work, needs good cams, and a lil more compression, but we found it REALLY needs GOBS of flow to perform admirably. But perform it will if ya get it right!!!

Hoist!
if the big bore gets you to the noise level of a BORZILLA I can't handle it. I had a Boarzilla on a 114. It so loud that one time I had it dynoed at a hd shop that has to listen to bikes everyday on the dyno. When I went to pick it up the service guys come over and said what king of pipes do you have on that bike. Its the loudest bike we ever heard. It dynoed out great. Something like 134hp, But I had to take it off, it even gave me a headache

It is not as loud as a Borzilla! But it's noticably louder than a FatCat w/Quiet Muffler. Maybe about in between the 2!

Hoist!

tomp · January 30, 2009, 09:24:35 PM

GoFast, flip over the Fat Cat and you will see it's a step-header design also

Faast Ed · January 31, 2009, 07:39:39 AM

True dat, Fatcat is stepped.

Gofast, I don't see a "Bub 7" 2 into 1 on your list.

03deuce · January 31, 2009, 11:30:00 AM

Looks like you have a good collection there except the thunderheader, as you mentioned, what about the Pro-pipe?

Admiral Akbar · January 31, 2009, 01:45:10 PM

Need to add a couple 2 into 2s so that you can blow the 2 into 1s are better out of the water... Max

fuzznut5197 · January 31, 2009, 01:57:13 PM

Quote from: MaxHeadflow on January 31, 2009, 01:45:10 PM
Need to add a couple 2 into 2s so that you can blow the 2 into 1s are better out of the water... Max

Why don't you donate those glasspacks you got lying around.

Admiral Akbar · January 31, 2009, 08:10:45 PM

I think he'd have to run em without the floorboard as they are set up for a Dyna.. Then I be worried out getting em back..

Max..

mayor · January 31, 2009, 08:17:51 PM

Quote from: MaxHeadflow on January 31, 2009, 01:45:10 PM
Need to add a couple 2 into 2s so that you can blow the 2 into 1s are better out of the water... Max

I agree with Max. A control with a 2 into 2 would be very nice addition

GoFast..... · January 31, 2009, 08:39:50 PM

Quote from: MaxHeadflow on January 31, 2009, 01:45:10 PM
Need to add a couple 2 into 2s so that you can blow the 2 into 1s are better out of the water... Max

Max I got Rhinehart true duals to dual it out with the two into ones. Tried to buy a Bagger Thunderheader at the swap meet today 300,00 is the best I could buy one for so I passed, Will the softtail pipes work if I take the floor board off

Admiral Akbar · January 31, 2009, 09:07:07 PM

"Max I got Rhinehart true duals to dual it out with the two into ones."

Can't remember what cam you are running. If it's a WT they might do OK..

Max.

fuzznut5197 · February 01, 2009, 07:02:53 AM

Quote from: MaxHeadflow on January 31, 2009, 08:10:45 PM
I think he'd have to run em without the floorboard as they are set up for a Dyna.. Then I be worried out getting em back.. Max..

They did perform better than anything else you tried, IIRC. But the look... actually, you were ahead of the time, they would look perfect on the death, blacked-out, cross-bone-skull-crush-kill fluffy bikes of today.

After the passive exhaust dyno shootout, let's do some active ones.

ederdelyi · February 01, 2009, 07:13:15 AM

Wanna see a HD with active intake tuning, VVT, and active exhaust tuning run?
...

Wanna see it again?

fuzznut5197 · February 01, 2009, 07:18:26 AM

Quote from: ederdelyi on February 01, 2009, 07:13:15 AM
...

Cool!!!

Admiral Akbar · February 01, 2009, 07:38:29 AM

"They did perform better than anything else you tried, IIRC. But the look... actually, you were ahead of the time, they would look perfect on the death, blacked-out, cross-bone-skull-crush-kill fluffy bikes of today.

"

While they do work make good HP on my 113 (still has them) and they worked OK on my 116, I suspect that they are better suited for bigger motors. Also while the curves tend to be broad with no dips and good lower RPM Tq, peak TQ is down from good 2 into 1 or even a set of Kromewerks AR100s. They are pretty quiet though and have a nice sound to them. Max

ederdelyi · February 01, 2009, 07:46:43 AM

Max,
Did you ever try adding a crossover to a setup like that? In addition to the benefit of the additional muffler volume per cylinder there can be a slight improvement in pipe tune effect as well ... it's worked for me several times. Placement and diameter of the crossover isn't too critical, IME, but can have an effect on the results.

Admiral Akbar · February 01, 2009, 08:07:16 AM

That's on interesting thought.. With the muffler placement it would have to be about 8-10 inches from the heads... Max.

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