hey hey!
i got a Manual TH Magna Sports, which has had no exhaust modifications as of yet.
i have been looking at getting a bit more of a deeper note comming from the car. I'm not heaps worried about increasing my performance by alot...but a lil increase would b good. I have read heaps on here that the muffler is pretty much the only thing that definately needs changing on a Magna Sports, due to the fact that it already has 2.5" piping???

Well i took my car to Carline the other day to hopefully get a Lukey Turbo muffler put on, the bloke looked under my car n said i had a long resonator just after my CAT, then another lil one just before the muffler. He said that if i was after more of a note, changing the muffler wouldnt do much due to the fact the resonators would be keeping it quieter.
I have to say....i dont want the car to be heaps loud, as i do alot of driving at 110Km n dont wanna have a headache at the end of my drive.
but yeh....the bloke wants me to get a full cat-back system, 2.5" piping (which i thought was already on there)...n a Lukey muffler.

so my question is....is it true the TH Sports piping is only 2.25", not 2.5"? and......if i didnt have the resonators at all, would the car be too loud for wat i want....or do i need to get rid of them to have a noticable note increase??

also...i got the Lukey muffler brochure Carline gave me.....n they said the one they would put on was the Turbo and would cost me about $250 (extra for a chrome tip)....is that price a bit too much?
And if anyone knows the difference between the Lukey Turbo and the Lukey Race mufflers.....please tell me lol.

OR.....should i just not get a Lukey at all lol....another muffler b better for wat i want?

any ideas or opinions would be greatly appeciated....thanx heaps!!

it's true about the resonators in your system. The only real restriction (apart from the rear muffler) is the one that is located in front of your rear axle. Yes the TH sports have 2.5 inch pipework. all you need to do is replace the rear muffler with a straight through and remove the resonator previously stated.

The reason for the restriction in that last res is that the inlet and outlet reduce down to 2 inch diameter (if you don't believe me have a look) i did this on my 2000 TH sports manual and it gave a very nice note. i also opted to remove my front res to give a little more noise as being an exhaust fitter i like my cars to be loud.

I would suggest keeping the front resonator in place to reduce droning while driving on the highway for at least a dfew weeks to see how you like it.

just my 2 cents worth hope it helps.

Ben

you can try the Redback exhaust system from cat back... its louder than the Lukey LR2779 which is supposed to be the equivalent to the muffler fitted to the VR and VRX

I know when i had the 3.0 TF, that came with 2.25inch exhaust. I had a 2.5inch Redback exhaust fitted to it. It has some performance gains and in comparision to my TL, its louder and drones a bit at around 2000+rpm. It was $480 fitted

I now have a 3.5 TL VRX, and that has a 2.5inch exhaust. Its a quieter exhaust and you can only hear the exhaust under acceleration or under load. Similar note to the Redback, just not as load.

Since you already have a 2.5inch pipes, why don't you just change your muffler to the Lukey LR2779

or look at this post for another suggestion

http://www.aussiemagna.com/forums/showpost.php?p=806052&postcount=3

Since you already have a 2.5inch pipes, why don't you just change your muffler to the Lukey LR2779


He doesnt, it is the 2.25

He doesnt, it is the 2.25

thats what he says thats my recommendation... anyway the other post before me came from a exhaust fitter, why don't you correct him? instead of quoting me?

thats what he says thats my recommendation... anyway the other post before me came from a exhaust fitter, why don't you correct him? instead of quoting me?
Yeah, because clearly I know what every person on AMC's profession is.

i also opted to remove my front res to give a little more noise as being an exhaust fitter i like my cars to be loud.

Wow....
You read plenty good huh?

Wow....
You read plenty good huh?
It's called skimming... try it sometime.

And the 2.25 seems to be on the Te and TF, but the TH on only get a 2.4 press bent setup, not 2.5.

It's called skimming... try it sometime.

No its called reading before you make some sarcastic post.
Try it sometime

when i got my car it had a stock exhaust system on it and the pipe work was (and still is!!) 65mm od. Now the 2.5inch exhaust tube that all muffler shops use is 67mm od. It is also mandrel bent from factory.

2mm difference isnt enough to justify calling it 2.25 inch pipework. if you really want to get technical with me i could go into a whole lot more but this is what comes standard on the 2000 TH sports manual magna's.

and as for the 'skimming' from reading the forums over the past few months i found that there are quite a large number of members that do it so don't worry you're not on your own.

2mm difference isnt enough to justify calling it 2.25 inch pipework. if you really want to get technical with me i could go into a whole lot more but this is what comes standard on the 2000 TH sports manual magna's.


Hey? I corrected myself a few posts up on the pipe sizing. And the community at large seems to think that they are press bent, so thats what i am going off.

i know you corrected yourself further up, i was just making sure that the person that started the thread has all the information her needs to go exhaust shopping.

as for your "community at large" comment, well... you're the first i've heard of saying that they use press bent systems.

as for your "community at large" comment, well... you're the first i've heard of saying that they use press bent systems.


Well, you've been signed up for what, 15 days? Go measure the bends if you don't believe it.

Edit: That wasn't meant to come across as being condescending, was just trying to point out that over the years, I have seen a lot of threads where this is discussed and the piping is press bent, not mandrel. thats what i was referring to with the community at large comment.

My TJ's exhaust is 2.4" and 2.2/2.3" at the bends, isn't the whole point of mandrel to keep the same Diameter? If it were Mandrel bent why would this happen?

When I dropped my exhaust off it was 2.3" at most bends.

Read this thread, tis what I did...

http://www.aussiemagna.com/forums/showthread.php?t=29152

Has a brutal scream at wot, and a barely noticeable pur at low revs/idle.

Drones like a muther****er though

Well, you've been signed up for what, 15 days? Go measure the bends if you don't believe it.
.

if you read my previous post :doubt: you will notice that i said i have been reading this forum for quite a few months.

believe it or even mandrel bent systems have a sight reduction in the bend area. however being a mass produced product you can't expect that every bend will be perfect. yes they will have a slight reduction but with press bending you can expect the pipe to be reduced as far down as 50mm. Example is if you cut in the middle of a press bend section the pipe will be clearly oval.

i will try to get some pictures at work tomorrow so you can all compare.

seems like everybody still has droning issues around the 2000+rpm mark. has nobody found a good way to fix it yet.

thanx heaps for all ur replies guys!! uve all helped!!
i just measured ma zorst...measured it to be 2.5" but drop to around 2.35" in a bend.
for this reason i am not gonna bother changin my pipes...ill leave em standard n just get the small rear muffler (just before the rear axel) cut out, and get a muffler put on. ill leave the other resonator in since i dont want it heaps loud, mite control the droning a bit...and it can always come out later if i want it louder!! lol


thanx guys!!

seems like everybody still has droning issues around the 2000+rpm mark. has nobody found a good way to fix it yet.

Some people say try the Barry Fuel Rails, they apparent help with the droning... Haven't got it on my car so its just recommendations from others point of view.

seems like everybody still has droning issues around the 2000+rpm mark. has nobody found a good way to fix it yet.

Dont put a muffler on.
every car has drone if your gonna put a good exhaust on it
put on the VRX muffler...there pretty quiet

i dont want to start the **** fight again fellas, but i read earlier in the thread people were discussing the pipe diameter, but was listed in od (outside diamter) which means a pipe with a 2.5" diamter od or ~63mm would be an internal dimater of ~55mm-58mm (as i doubt the stock pipe is thinner then 3mm wall thickness) making the internal diamter closer to 2.25"

Im just after the info guys, i havent personaly played with exhaust systems on these cars yet, only other cars, so i cant comment on droning/performance potential or loss

At the moment i have a busted ankle and cant get down to my Rada to have a looksee, but a lot of modifcation is planned before hand, and its that im trying to get out of the way.

cheers

Lionel

the pipe i use to make exhaust systems has a wall thickness of 1.6mm. Factory exhaust systems usually use the same (or thinner for stainless)

seems like everybody still has droning issues around the 2000+rpm mark. has nobody found a good way to fix it yet.

Downchange. Barry's new fuel rail kit. Custom Inlet Manifold. I tried resonance tuning - didn't work very well due to the countless variables in pipe diameter, length, rpm to tune for - what was effective at 1500 was useless at 2000 :doubt: Smaller diameter pipes will keep the air speed higher as the drone is only present when the exhaust air speed slows. So instead of a smaller pipe - run 2x smaller pipes of comparible cross-section area as 2.5". Something like dual 1.3/4" pipes will have less drone.
Situations such as low rpm venting thru large diameter piping or small diameter piping into an oversized muffler or a muffler with a resonance chamber etc will give you drone in spades.

Drone = cranky mrs and vomiting kids = cranky mrs.