should exhaust come out quad tips evenly on ve ss?

[vl_bt1]

I got a new exhaust put on a few weeks back and noticed today that only the two inner tips have carbon from the exhaust on them, the other two dont seem to have any inside at all. Should the exhaust flow out all 4 tips evenly?

[vuss383]

What brand of exhaust system ?
What car is it fitted to ?

Yes it should come out all 4 . Maybe start the car & go feel if it comes out all pipes to start with . It may just be favouring 2 pipes due to the direction of the piping inside the mufflers .


Troy

[vl_bt1]

walkinshaw 2.5" cat back fitted to a ve ss

[azz66a]

Yeh all the walkinshaw ones do that. I think they are only single on each side cause we have fitted about 10 of them and thay all look the same after 1 week.

[vl_bt1]

ok thanks mate

[vuss383]

So are you saying that it's quad tipped but only runs duals ?? If so 1 would think this is pretty poor for a quality quad tip system .

Troy

[rgmast]

I have a KPM exhaust system fitted and only my outer tips r carboning up . Go figure . Havent had a chance to get it back for them to look at

[vl_bt1]

I dont know if it is designed to flow only through 2 or if the 2 most inner outlets are easier for the exhaust gasses to flow through. Either way only 2 are black from carbon

[vuss383]

Start the car , put ur hand over the 1 that is carboned & see if it directs out the other . As I said earlier it may favour 1 side due to muffler internals .

Troy

[tyrhantc]

Start the car , put ur hand over the 1 that is carboned & see if it directs out the other . As I said earlier it may favour 1 side due to muffler internals .

Troy

Good advice. Keep it safe though and wear safety glasses...:)

[mustanger]

Some of the HM systems have only one outlet on each side working .This is how you minimize the drone . There may be other systems out there .

Who makes the systems for the Walkinshaw?

If it is HM, well there is your answer.......Cheers John

[SS Enforcer]

I have seen a few of these now and it really looks cheap. Wait until the car has been driven for a bit it looks very suss with a dirty pipe and a nice clean one right next to it. Maybe they could try painting the inside of the dummy pipe with matt black paint.

[iloveholden]

Is it just me who thinks this is crummy and cheap from these exhaust manufactures? :confused:

For a quad system, all pipes should be firing :)

[MTC]

Some of the HM systems have only one outlet on each side working .This is how you minimize the drone . There may be other systems out there .

Who makes the systems for the Walkinshaw?

If it is HM, well there is your answer.......Cheers John

Yeah John the Walkinshaw exhaust is Made By HM/Perry

[vl_bt1]

exhaust is coming out al of them definately it just favours the inner most outlets. I blocked the inner most one on one side but it didn't seem to increase the flow through the outer one. Ill ring walkinshaw and post back what they advise

Spoke to walkinshaw and they said that both outlets on each side are open but the final baffle in the muffler lines up with the inner tips and the exhaust flows through the path of least resistance

[Wonky]

I have a KPM exhaust system fitted and only my outer tips r carboning up . Go figure . Havent had a chance to get it back for them to look at

I've got a full KPM exhaust on my ute. Double checked today and as I thought all 4 of my tips are carboned.

[SV346]

All 4 of mine are well carboned up :p but thats the least of my concerns, im just happy if mine doesnt fall apart at the moment, its not looking good

[TIR33D]

I have the Perry/HM and yes it only carbons the inner. The outers work, but I different sound when covering the inners. I think when your fair into it the outers work, just at idle and cruising the inners only.

[Wonky]

All 4 of mine are well carboned up :p but thats the least of my concerns, im just happy if mine doesnt fall apart at the moment, its not looking good

Exhaust or car you mean? :eek:

[mustanger]

All 4 of mine are well carboned up :p but thats the least of my concerns, im just happy if mine doesnt fall apart at the moment, its not looking good

How did you go with your problems with the welds ?

[SV346]

How did you go with your problems with the welds ?

haha its never ending mustanger, i just think ill replace it when it breaks, the headers are leaking now too so its just let it ruin itself then i have an excuse to replace it get a loud one again, cars going really well though thankfully wonky, its only taken 3-4months of workshop time :p well worth it though. Apparently the welds were the lesser of the mig or tig or something and they looked pretty inadequate even to the eye on saturday when i got a look at it, the shop had a good crack at the exhaust leaks, but theres some ones that are just unfixable. But it could be worse, could be getting defected again like the last one i had :)

But im surprised that companies would make exhausts with one pipe on a (quad pipe) dual set up active, it looks cheap and makes people think lesser in percieved quality even if its the best available.

[Wonky]

What system is it SV346?

[Roger]

The Walkinshaw 2.5" system (not sure of the 3") has a plate at the end of one of the outlets inside the muffler.

Get a torch & a coat hanger, straighten it out & shove it up the pipe that's not carboned, you'll see & feel it is blocked (or obstructed).

However there is a cross tube between the two outlets, of about 10mm diameter that you can shove a bent coat hanger through & see it stick into the other tube.

So the less dirty tip is used, but not much.

I assume it's was for noise tuning.

However the one dirty tip & one clean tip does look a little "odd" & even a little "foolly sic". If I'd have known that was the look, I probably would have got something else. But the noise is good & the tips look good (when it's clean.....).

Most at issue is that the rear mufflers are corroding at either end on the underside of the muffler & where the Walkinshaw logo is applied, it's covered in surface rust. It's only been on since August & I don't live near the sea, so it's back to the fitter !

[Benton]

The Walkinshaw 2.5" system (not sure of the 3") has a plate at the end of one of the outlets inside the muffler.

Get a torch & a coat hanger, straighten it out & shove it up the pipe that's not carboned, you'll see & feel it is blocked (or obstructed).

However there is a cross tube between the two outlets, of about 10mm diameter that you can shove a bent coat hanger through & see it stick into the other tube.

So the less dirty tip is used, but not much.

I assume it's was for noise tuning.

However the one dirty tip & one clean tip does look a little "odd" & even a little "foolly sic". If I'd have known that was the look, I probably would have got something else. But the noise is good & the tips look good (when it's clean.....).

Most at issue is that the rear mufflers are corroding at either end on the underside of the muffler & where the Walkinshaw logo is applied, it's covered in surface rust. It's only been on since August & I don't live near the sea, so it's back to the fitter !

Very well answered, summed it up perfectly!!

One question with your rust issue, is your exhaust a stainless steel jobbie. If yes, how is this possible? I thought s/s was impurvious to rusting , I might be wrong though.:confused:

[TUFFIE]

I have the Perry/HM and yes it only carbons the inner. The outers work, but I different sound when covering the inners. I think when your fair into it the outers work, just at idle and cruising the inners only.

LOL unfortunately you don't always get what you pay for. HM had to do this to reduce drone in their earlier systems,(ithey have fixed this with their newer system by putting a bigger rear muffler on) it also gives a god awful puffy sound on the outside at WOT, basically their rear muffler is a single in single out with the second pipe there for looks and they put a hole through to the other pipe just so it looks like its working, in essence you may as well put a SV 6 muffler on the back, same flow.

Pretty good trick isn't it????

KPM are the same Single IN/OUT but they split just after exiting the muffler and not restrict the flow.

[Benton]

I believe this has changed on their new E2 (bi modal) 3' systems.

[PESSV]

My HM Perry's only carbon up the inner pipes. The outers are blanked off inside the muffler and there is a bridge between the 2 but only about 20-25mm in diameter. Don't know if they are the same as the Wilkinshaw's, they only have small outlets dont they, not 2.5 inch?

[Wonky]

KPM are the same Single IN/OUT but they split just after exiting the muffler and not restrict the flow.

My KPM 3" on ute.
http://i122.photobucket.com/albums/o274/gcovo/SSV%20Ute/th_01KPM3insystemSSVutept1.jpg

[Roger]

My HM Perry's only carbon up the inner pipes. The outers are blanked off inside the muffler and there is a bridge between the 2 but only about 20-25mm in diameter. Don't know if they are the same as the Wilkinshaw's, they only have small outlets dont they, not 2.5 inch?

Walkinshaw 2.5" & 3" aftermarket systems are HM.

E2 (& at least W427) factory systems are also HM.

Stainless is not impervious to rust. It's all about the grade thereof. In addition, I think these are corroding from the inside out. The surface rust is definitely as a result of the logo application, which is probably some sort of etching process, so taking whatever protective coating was on the stainless, leaving it almost as exposed as bare mild steel would be. It's not the issue - you don't see the Walkinshaw logo unless you swing underneath it. It's the big time corrosion that's not all that flash at this early stage.

[PESSV]

The guys at HM have been really good any time I've been in touch with them so maybe contact them. I have actually had mine replaced recently, not for corrosion but the old ones where showing signs of rust on the seams. I have found they stand by thier product and they have been very good.

I must be missing something in an earlier post. These are somehow restrictive just because they exit via only one pipe. But the KPM's with a single exit pipe are not restrictive because it splits into two after that point. Still only one exit pipe? Is the statement that they are restictive based on any facts.

And a god awful puffy sound on the outside at WOT? Don't agree sorry.

[TUFFIE]

My KPM 3" on ute.
http://i122.photobucket.com/albums/o274/gcovo/SSV%20Ute/th_01KPM3insystemSSVutept1.jpg (http://s122.photobucket.com/albums/o274/gcovo/SSV%20Ute/?action=view&current=01KPM3insystemSSVutept1.flv)

Ok Wonks, the system on BD's when I looked at it at the nats was Sungle out.

PESSV.. the single out on the KPM'S are a larger diameter than the HM thats why it doesn't restrict flow.

The pufffy sound is based a a HM 2 1/2 on a gts that I have driven myself. so its based on my experience.

Exhaust note is very much a personal choice.

[PESSV]

PESSV.. the single out on the KPM'S are a larger diameter than the HM thats why it doesn't restrict flow.

The pufffy sound is based a a HM 2 1/2 on a gts that I have driven myself. so its based on my experience.

Exhaust note is very much a personal choice.

Too true that exhaust note is a personal thing.

The way you described the KPM's was that the splitting of the pipe was what made them less restrictive, not that they had a larger exit. Larger exit doesn't automatically equal a less restrictive muffler but it doesn’t matter.

I still don't know that these are restrictive. I assume they are a straight through design so should flow well. Pretty sure HM/Perry would have done some testing, they have been around a while. I just think it is a bit harsh to say these are restrictive without any data. What this whole exhaust debate needs is some flow rate testing on these common systems and mufflers. Who knows, we could all be wrong and spending good bucks on these things and not getting what we were expecting.

[jaykay]

Pic of Walkinshaw Zorst Here (http://www.carsales.com.au/Tig/UI/PagePopup.aspx?R=8265587&PhotoID=7324001&h_mid=4415219&f_mid=&c_mid=4414491&pid=140973&tabID=304744&tsrc=allcarhome)

[Roger]

Most at issue is that the rear mufflers are corroding at either end on the underside of the muffler & where the Walkinshaw logo is applied, it's covered in surface rust. It's only been on since August & I don't live near the sea, so it's back to the fitter !

Just to update, the supplier is sourcing new rear Walkinshaw mufflers (which as you know are made by HM) to replace the corroded ones. So no issue from that perspective. Is a rare occurrence from the suppliers viewpoint (& he is being honest - he has fitted many).

And someone mentioned the word "puffy" on the Walkinshaw 2.5" which mine is. Mine is not "puffy" at all, but it was new in August, so maybe the older oval tipped systems were like that. Someone also mentioned that new Walkinshaw's mufflers now use both tips. Apparently it has not, still using 1 tip, with the 10mm diameter crossover tube into the 2nd tip. I'll let you know once my new rears are installed.

[Wonky]

Ok Wonks, the system on BD's when I looked at it at the nats was Single out.

:eek: Wonder why they do some one way and some the other??? :confused: My SSV sedan one also had a Y (1 into 2).

[PESSV]

Often wondered about the reason for the way the HM Perry mufflers are done this way. I find mine quite loud with the popping and farting, louder than most I've heard.

Could it be that this design actually pulls air back in the pipe that does nothing when decelerating? Like the venturi affect in a carby. This could help the unburnt fuel in the main one burn? Just an idea. Maybe it is to actually increase the snap crackle pop effect.

[TUFFIE]

Often wondered about the reason for the way the HM Perry mufflers are done this way. I find mine quite loud with the popping and farting, louder than most I've heard.

Could it be that this design actually pulls air back in the pipe that does nothing when decelerating? Like the venturi affect in a carby. This could help the unburnt fuel in the main one burn? Just an idea. Maybe it is to actually increase the snap crackle pop effect.

May be because they drone with bot opened up (which they do) so they block one off and have a small opening to make it look like they both work.:confused:

I heard a 3inch system the other day, can't say I am a fan, specially at WOT . My 1 c worth though....what would i know.

[NuffNuff]

sorry to dig this up, but has anyone heard the HM exhausts with the blockage removed?

[Roger]

I have had the "decel" taken out within the computer, so it doesn't add fuel during the decel period & my Walkinshaw 2.5" no longer burps & farts with the throttle closed. All good now. But yes, was wondering if anyone had opened up the outers on these systems ?

[amckiwi]

Rog

Reducing the farting has that impacted your engine breaking?

Stu

[TUFFIE]

sorry to dig this up, but has anyone heard the HM exhausts with the blockage removed?

Yeah. initially they didn't have that is place, but that created some drone so it was modified to its current set up.

The Walkinshaw system is a HM system, the outer pipe is still a fake...

[NuffNuff]

mine is still getting darker on the 'fake' pipes, it also has a bit of air puffing out on idle, i suspect because they are welded right around the seem of the plate

[TUFFIE]

Nuff....thats because there is a very small pipe that joins the two....

I wish I had the money and the facility, I reckon I could develop a great system for the VE....its not all in the rear mufflers like many try to fix...

[steves87]

http://forums.justcommodores.com.au/ve-holden-commodore-2006/145922-whats-rear-muffler.html

Saw this on another forum.... should be that all 4 pipes flow by my reckoning.
fyi, there is carbon on all 4 tips of my stock exhaust:)

[TUFFIE]

http://forums.justcommodores.com.au/ve-holden-commodore-2006/145922-whats-rear-muffler.html

Saw this on another forum.... should be that all 4 pipes flow by my reckoning.
fyi, there is carbon on all 4 tips of my stock exhaust:)

We are not talking about a stock exhaust though...:eyes:

[steves87]

We are not talking about a stock exhaust though...:eyes:

no probs, good to know anyway:)

[NuffNuff]

the HM ones are basically a perferated Y in a box with one of the top Y sections blocked and piped over to the other side (like a small balance pipe i imagine)

thanks TUFFIE

[chillicatqld]

They would have one of the pipes due to drone issues on AFM models.
If you look at the SS & HSV stock mufflers on AFM models they all are one pipe into 2 tips.
This is where it stops the drone when it cuts into AFM.
I put a set of HSV mufflers on my mates AFM wagon (and I got him the 2 pipe ends - off a manual) and when it cuts to 4 cylinders it drones.

[Wonky]

They would have one of the pipes due to drone issues on AFM models.
If you look at the SS & HSV stock mufflers on AFM models they all are one pipe into 2 tips.

I'm 99% sure my early AFM ute (Mar 09 build) had twin exit pipes all the way from the muffler, not a Y pipe. Will try to get a look next time I have the chance as the rear mufflers are in the shed somewhere.

[MTC]

They would have one of the pipes due to drone issues on AFM models.
If you look at the SS & HSV stock mufflers on AFM models they all are one pipe into 2 tips.
This is where it stops the drone when it cuts into AFM.
I put a set of HSV mufflers on my mates AFM wagon (and I got him the 2 pipe ends - off a manual) and when it cuts to 4 cylinders it drones.

HSV Dont have AFM so both auto & manual HSV mufflers are exactly the same. & the Y exhaust was in before AFM well on wagons atleast as My old 08 SSV auto wagon had Y piece Mufflers

[Benton]

So can anyone confirm once and for all if the Walkinshaw twin 3" bi -modal system they fit up now actually smokes evenly from the four tips - unlike there earlier systems?

[EddieVE06]

I didn't want to start a new thread. I wanted to ask whether the series 2 rear mufflers for a ve v8 or hsv would fit on a series 1. I have read that the hangers are different and is it an easy thing for an exhaust shop to do. Also can the hsv muffler tips be removed and normal tips added. I am starting to struggle with the note on my hm system. I'm using my car so much more for Work now that I'm just about over the sound.
Thanks

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