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Exhaust mods to reduce noise 

 

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Posted: Sun Jan 28, 2007 8:51 pm 
Getting Side Ways
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c'mon, no need for insults kapul, that just proves a point, which one you can figure out.

I've seen some of these vavle thingos on some jeremy clarskon dvds, they were fitted to the tailpipe though.

 

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Posted: Sun Jan 28, 2007 9:29 pm 
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Valves of that type are just an expensive version of the old cast iron dumper that you can buy from Moroso via Rocket.

They're good till they carbon-up and sieze.

Hmmm... If they malfunction in the wide-open state, you may receive unwarranted attention from coppers.

In the closed position they would offer a substantial restriction to flow and performance.

A correctly fitted exhaust system will give you the best of both worlds with no moving parts without the added expense.

Another old f@rt's opinion. Hard-earned experience :wink:
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Posted: Mon Jan 29, 2007 1:32 am 
Getting Side Ways
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playswithnitro wrote:
Valves of that type are just an expensive version of the old cast iron dumper that you can buy from Moroso via Rocket.

They're good till they carbon-up and sieze.

Hmmm... If they malfunction in the wide-open state, you may receive unwarranted attention from coppers.

In the closed position they would offer a substantial restriction to flow and performance.

A correctly fitted exhaust system will give you the best of both worlds with no moving parts without the added expense.

Another old f@rt's opinion. Hard-earned experience :wink:


Im sorry i have nothing against older experienced guys. I just get revved up wen i hear ppl generalizing, saying that all teenagers dont know better. Well I know alot of teenagers and ppl in there early 20's that would kick the pants off alot of older guys. Again sorry fo the outburst, i just hate bein boxed up in a category

 

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Posted: Mon Jan 29, 2007 7:48 am 
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If you read the thread title then you wouldnt have needed to reply in the first place.

I want something quiet. Not fully sick to impress my friends or people on the internet.

kapul wrote:
Just coz ur an old C*** who thinks he knows everything. d**k head


:roll: Put the keyboard down and no one will get hurt. Im 23 btw.

Last edited by Dansedgli on Mon Jan 29, 2007 7:55 am, edited 1 time in total.

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Posted: Mon Jan 29, 2007 7:52 am 
Getting Side Ways
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playswithnitro wrote:
Valves of that type are just an expensive version of the old cast iron dumper that you can buy from Moroso via Rocket.

They're good till they carbon-up and sieze.

Hmmm... If they malfunction in the wide-open state, you may receive unwarranted attention from coppers.

In the closed position they would offer a substantial restriction to flow and performance.

A correctly fitted exhaust system will give you the best of both worlds with no moving parts without the added expense.

Another old f@rt's opinion. Hard-earned experience :wink:


Thanks for that. I didnt think about them getting clogged up. That would be a pain.

Apparantly the APS exhaust for the XR6T is quiet while still flowing really well. I might see if can find out what mufflers they are using.
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Posted: Mon Jan 29, 2007 1:26 pm 
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I made my own with plenty of glass and centre chamber about 4 litres...
The old system with single 3"offset in /out straight through muffler and two resonators worked well...
It was sick... And I'm 53.....Hahaha

 

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Posted: Mon Jan 29, 2007 3:27 pm 
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EBXR8380: You're good.

For an even-older bloke: You're fully sick.

Ha ha ha ha!!!
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Posted: Tue Jan 30, 2007 12:12 am 
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OK I guess ???

 

 

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Posted: Tue Jan 30, 2007 2:30 am 
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Dansedgli wrote:
playswithnitro wrote:
Valves of that type are just an expensive version of the old cast iron dumper that you can buy from Moroso via Rocket.

They're good till they carbon-up and sieze.

Hmmm... If they malfunction in the wide-open state, you may receive unwarranted attention from coppers.

In the closed position they would offer a substantial restriction to flow and performance.

A correctly fitted exhaust system will give you the best of both worlds with no moving parts without the added expense.

Another old f@rt's opinion. Hard-earned experience :wink:


Thanks for that. I didnt think about them getting clogged up. That would be a pain.

Apparantly the APS exhaust for the XR6T is quiet while still flowing really well. I might see if can find out what mufflers they are using.


The only thing their site says is they use a 3.5 inch into twin 2.5's

Heres a pic from underneath
Image

 

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Posted: Wed Jan 31, 2007 12:32 am 
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Jim Beam: Thanks for sharing the APS pic.

That's a very good example of a performance exhaust for a turbo I6. The 3.5" front section would offer good flow and the dual 2.5" mufflers and rear section certainly would flow even better due to the greater cross-section.

Getting a 3.5" pipe over the diff without hitting the body or standard suspension would be a challenge. With lowered suspension it would be a nightmare. A pair of 2.5" pipes is much easier to package.

Behind a N/A (naturally aspirated) I6 you'd lose exhaust velocity in the 3.5" section. Down low it would feel flat and unresponsive. Would work well at higher RPM but only after struggling to get there.

I reckon it would make a great basis for an exhaust in a N/A 5-litre.
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