EXHAUST QUESTIONS ANSWERED BY AN EXHAUST TECH

[Frankenyota]

Have a 83 lux with VN series 2 T700 auto, what would be the best set up for torque / power without having a drone.
Was recommended pace maker headers 2.5" pipe and tri-flow muffler in a single system.
Is a cat converter really needed? [ except for rwc ]

Forgot to add V6 3.8l

cheers
Matt

[EXHAUSTFIX]

Have a 83 lux with VN series 2 T700 auto, what would be the best set up for torque / power without having a drone.
Was recommended pace maker headers 2.5" pipe and tri-flow muffler in a single system.
Is a cat converter really needed? [ except for rwc ]

Forgot to add V6 3.8l

cheers
Matt

hi

if you remove the cat you usually find the you loose a bit of torque i would sugest u leave it alone
with the system you can run 2.5" as long as you run a very large str muffler but to reduce drone you should go to a 2.25" tail this will not reduce power and if needed ad a resenstor in the tail

[Madmac]

G,day exhaustfix. i have a TB42 petrol GQ long wheel base, i just bought a set of Genie extractors for $50 off another forum member. its got me thinking about upgrading the rest of the exhaust too. i would like max power and if possible id like to make it sound better too. what size pipe and what type of muffler would you recomend. and what would be a fair price to pay for it and have my extractors fitted at the same time
Thanks in advance
Mark

you could go up to 2.5" with this and use a larg straight through truck muffler in the front (m24250) and a good resonator in the rear(bm444)

this will give you max power and sound

expect to pay about $400 with extractor fitting

ross

thanks for that, im assuming the resonator is the small muffler looking thing at the rear? is it nessacary to have a resonator and what exactly does it do? can it be removed all together or moved forward. the reason i ask is where it is at the moment its vulnerable to damage when dropping off big rocks

the resenator is only to take out more noise
you can remove it if you can handle it a bit louder

how much louder are we talking? mildly louder or ridiculously louder?

[EXHAUSTFIX]

G,day exhaustfix. i have a TB42 petrol GQ long wheel base, i just bought a set of Genie extractors for $50 off another forum member. its got me thinking about upgrading the rest of the exhaust too. i would like max power and if possible id like to make it sound better too. what size pipe and what type of muffler would you recomend. and what would be a fair price to pay for it and have my extractors fitted at the same time
Thanks in advance
Mark

you could go up to 2.5" with this and use a larg straight through truck muffler in the front (m24250) and a good resonator in the rear(bm444)

this will give you max power and sound

expect to pay about $400 with extractor fitting

ross

thanks for that, im assuming the resonator is the small muffler looking thing at the rear? is it nessacary to have a resonator and what exactly does it do? can it be removed all together or moved forward. the reason i ask is where it is at the moment its vulnerable to damage when dropping off big rocks

the resenator is only to take out more noise
you can remove it if you can handle it a bit louder

how much louder are we talking? mildly louder or ridiculously louder?

if it was me i would put the resenator on they are a bit loud without it

[Pep]

Hi Ross

great feed back, keep it up.

i hope this hasn't been covered already (too many to read all)

I have a 94 sierra and i cant get the extractors to seal properly to the head
i think i may have warpep them in the last water crossing
Can i do anything (short of replacing the extractors) such as thicker or
different material gasket?
Any help would be appreciated

Thanks in advance Pep

[EXHAUSTFIX]

Hi Ross

great feed back, keep it up.

i hope this hasn't been covered already (too many to read all)

I have a 94 sierra and i cant get the extractors to seal properly to the head
i think i may have warpep them in the last water crossing
Can i do anything (short of replacing the extractors) such as thicker or
different material gasket?
Any help would be appreciated

Thanks in advance Pep

hi

this depends how bad the are bent
put the face on a flat surface and check the face plate
you can always get a hammer a tap down the high spots or tap up the low spots to get it close then use a new gasket with a bead of ultra copper sealer on each side of the gasket around the ports if this fails you might need to take it to an engineering shop to get the face machined

good luck

ross

[hokey]

Ross i have stripped the exhaust manifold bolt and was wondering if you would be the right guy to take it too to get the hole in the head rethreaded? also how much would it cost for you to make and install a custom exhaust from behind the muffler. just having a few issues at the moment with the tyres rubbing and i need some new shape tail pipe to solve the problem.
Cheers, Calvin

[bigbennymq]

whats the best system for a sd33 non turbo to get max power

[Maggot4x4]

I haven't read the whole thread so if this has been asked sorry.

I have an Isuzu 4BD1 3.9L 4CYL N/A Diesel in my Rangie. It is currently running the standard 3.5L V8 exhaust from where the Y was back.

It's pretty much shot so what would be the best thing to replace it with? Will probably keep the manifold.

Cheers

[andrew e]

i heard a rumour a while ago that used cat converters had some sort of rare metals in them and were worth about 30 bucks each? i thought it was BS, but today i was following a ute with a tray full of nothing but used cats - no mufflers or pipes. once and for all is there any truth to this?

[EXHAUSTFIX]

Ross i have stripped the exhaust manifold bolt and was wondering if you would be the right guy to take it too to get the hole in the head rethreaded? also how much would it cost for you to make and install a custom exhaust from behind the muffler. just having a few issues at the moment with the tyres rubbing and i need some new shape tail pipe to solve the problem.
Cheers, Calvin

hi there i can fix a stripped stud for you
you can either take the manifold of the car and bring it in or bring the car to me

a new tail will cost about $70 depending on the size

ross

[EXHAUSTFIX]

whats the best system for a sd33 non turbo to get max power

if my memory is correct this is about a 3 ltr deisel

for this use a 2.25" system with a 6" round x 16" long muffler
dont go any bigger as you may affect your low down torque
ross

[EXHAUSTFIX]

I haven't read the whole thread so if this has been asked sorry.

I have an Isuzu 4BD1 3.9L 4CYL N/A Diesel in my Rangie. It is currently running the standard 3.5L V8 exhaust from where the Y was back.

It's pretty much shot so what would be the best thing to replace it with? Will probably keep the manifold.


Cheers

use a 2.5" sysrem with a straight through muffler this will work fine

thanks ross

[EXHAUSTFIX]

i heard a rumour a while ago that used cat converters had some sort of rare metals in them and were worth about 30 bucks each? i thought it was BS, but today i was following a ute with a tray full of nothing but used cats - no mufflers or pipes. once and for all is there any truth to this?

yes there is

i actually recycle them and pay $20 each for old ones as long as they have a complete brick still inside them

metals , platuinem paladium rodiam

[Maggot4x4]

I haven't read the whole thread so if this has been asked sorry.

I have an Isuzu 4BD1 3.9L 4CYL N/A Diesel in my Rangie. It is currently running the standard 3.5L V8 exhaust from where the Y was back.

It's pretty much shot so what would be the best thing to replace it with? Will probably keep the manifold.


Cheers

use a 2.5" sysrem with a straight through muffler this will work fine

thanks ross

I am thinking of a Turbo in the next 6-12 months, would you still say 2.5"?

[hokey]

Ross i have stripped the exhaust manifold bolt and was wondering if you would be the right guy to take it too to get the hole in the head rethreaded? also how much would it cost for you to make and install a custom exhaust from behind the muffler. just having a few issues at the moment with the tyres rubbing and i need some new shape tail pipe to solve the problem.
Cheers, Calvin

hi there i can fix a stripped stud for you
you can either take the manifold of the car and bring it in or bring the car to me

a new tail will cost about $70 depending on the size

ross

Does the stud go into the head? thats what i thought it does so why would i bring in the manifold. might pop in this afternoon to have a chat with you about it.
Cheers

[dansedgli]

Hey Ross,

Ive had a few cars done by you previously, a turbocharged white EB being one if you can remember back to early last year. You were interested in the exhaust manifold.

I have just recently bought another turbo EA and it has a 4 inch exhuast from the turbo back to the diff and 3 inch over the diff. I dont think the cat exists either :(

There isnt a lot of clearance and the exhaust tip looks terrible. Would you recommend going to a smaller size exhaust from the turbo back, I am chasing 300 rwkw. My last turbo ford made 310rwkw with a 3 inch system. Would this have been restrictive if I was chasing more power? 300 rwkw would be nice to have again with the new car.

I also have an exhaust leak which Ill need fixed shortly so Ill bring it around so you can have a look.

Thanks mate,
Dan

[Patchy]

how is everyone this morning. any way my question is.

is there going to be any ill effects from removing the rear, say 1/3 to 1/2 of the exhaust system and the only muffler on that system

I have just done this to my SWB MK Patrol 3.3 turbo diesel, i was hoping there was going to be a muffler up closer to the engine but there is only one big one. i removed this section as when 4wheeling it was getting pushed in and caught on stuff slightly and restricting flow. now all i have is a straight pipe that ends just before the rear wheels. i havent noticed anything performance wise good or bad. but the sound is obviously louder and you can hear more of the turbo whisle.

[EXHAUSTFIX]

Hey Ross,

Ive had a few cars done by you previously, a turbocharged white EB being one if you can remember back to early last year. You were interested in the exhaust manifold.

I have just recently bought another turbo EA and it has a 4 inch exhuast from the turbo back to the diff and 3 inch over the diff. I dont think the cat exists either :(

There isnt a lot of clearance and the exhaust tip looks terrible. Would you recommend going to a smaller size exhaust from the turbo back, I am chasing 300 rwkw. My last turbo ford made 310rwkw with a 3 inch system. Would this have been restrictive if I was chasing more power? 300 rwkw would be nice to have again with the new car.

I also have an exhaust leak which Ill need fixed shortly so Ill bring it around so you can have a look.

Thanks mate,
Dan

hi dan

i do rember you car

3" should be fine need to look at the dump pipe configeration

and type of mufflers they used

ross

[EXHAUSTFIX]

how is everyone this morning. any way my question is.

is there going to be any ill effects from removing the rear, say 1/3 to 1/2 of the exhaust system and the only muffler on that system

I have just done this to my SWB MK Patrol 3.3 turbo diesel, i was hoping there was going to be a muffler up closer to the engine but there is only one big one. i removed this section as when 4wheeling it was getting pushed in and caught on stuff slightly and restricting flow. now all i have is a straight pipe that ends just before the rear wheels. i havent noticed anything performance wise good or bad. but the sound is obviously louder and you can hear more of the turbo whisle.

hi this will not make a great deal of difference apart from the noise increase as the restriction is at the manifold or outlet off your turbo

ross

[Patchy]

how is everyone this morning. any way my question is.

is there going to be any ill effects from removing the rear, say 1/3 to 1/2 of the exhaust system and the only muffler on that system

I have just done this to my SWB MK Patrol 3.3 turbo diesel, i was hoping there was going to be a muffler up closer to the engine but there is only one big one. i removed this section as when 4wheeling it was getting pushed in and caught on stuff slightly and restricting flow. now all i have is a straight pipe that ends just before the rear wheels. i havent noticed anything performance wise good or bad. but the sound is obviously louder and you can hear more of the turbo whisle.

hi this will not make a great deal of difference apart from the noise increase as the restriction is at the manifold or outlet off your turbo

ross

thanx mate! i had some bloke try tell me i will destroy my turbo because there isnt enough back pressure. i asked him why and he didnt really have a clue. im starting to like the noise and love the whistle so it stays as is

[EXHAUSTFIX]

how is everyone this morning. any way my question is.

is there going to be any ill effects from removing the rear, say 1/3 to 1/2 of the exhaust system and the only muffler on that system

I have just done this to my SWB MK Patrol 3.3 turbo diesel, i was hoping there was going to be a muffler up closer to the engine but there is only one big one. i removed this section as when 4wheeling it was getting pushed in and caught on stuff slightly and restricting flow. now all i have is a straight pipe that ends just before the rear wheels. i havent noticed anything performance wise good or bad. but the sound is obviously louder and you can hear more of the turbo whisle.

hi this will not make a great deal of difference apart from the noise increase as the restriction is at the manifold or outlet off your turbo

ross

glad to help

ross

[80diesel4play]

dude,

got a 93' turbo'd 80 - Need a 3" mandrel setup to the rear diff crossover and then twin 2" out the back. (1 down each side V8 style. I have a 3" dump pipe with flange about 12" down to mate to. Want to take the exhaust inside the chassis rails behind the engine (have body lift to accomodate this.) and use at least 1 3" flexi for vibes. The turbo is booty fab top mount so the dump points straight down and currently has a 2.5" system following factory lines.

Price? timeframe to do the job? Thanks.

[Kruza]

Hey Ross,

About to get a turbo on my Diesel 100 series, will the 3" straight through be a good way to go?

[EXHAUSTFIX]

dude,

got a 93' turbo'd 80 - Need a 3" mandrel setup to the rear diff crossover and then twin 2" out the back. (1 down each side V8 style. I have a 3" dump pipe with flange about 12" down to mate to. Want to take the exhaust inside the chassis rails behind the engine (have body lift to accomodate this.) and use at least 1 3" flexi for vibes. The turbo is booty fab top mount so the dump points straight down and currently has a 2.5" system following factory lines.

Price? timeframe to do the job? Thanks.

about $850 to do it properly 1 full day
ross

[EXHAUSTFIX]

Hey Ross,

About to get a turbo on my Diesel 100 series, will the 3" straight through be a good way to go?

yes this wil work very well if you want no noise pot in a straight through muffler if you want a good note dont run a muffler at all

ross

[micka1]

got a turbo 3 ltr 2002 hilux just wondering what size exhaust and dump pipe to run on this . and what sort off difference to expect .

sorry if this has been covered too many pages to sit and read through on dial up connection.

[EXHAUSTFIX]

got a turbo 3 ltr 2002 hilux just wondering what size exhaust and dump pipe to run on this . and what sort off difference to expect .

sorry if this has been covered too many pages to sit and read through on dial up connection.

2.5 " SYSTEM IS BIG ENOUGH FOR THAT AS THEY ONLY RUN A SMALL TURBO
FAIRLY GOOD GAIN (woops caps again)

[80diesel4play]

dude,

got a 93' turbo'd 80 - Need a 3" mandrel setup to the rear diff crossover and then twin 2" out the back. (1 down each side V8 style. I have a 3" dump pipe with flange about 12" down to mate to. Want to take the exhaust inside the chassis rails behind the engine (have body lift to accomodate this.) and use at least 1 3" flexi for vibes. The turbo is booty fab top mount so the dump points straight down and currently has a 2.5" system following factory lines.

Price? timeframe to do the job? Thanks.

about $850 to do it properly 1 full day
ross

Cheers - will keep it in mind then - considering the original price from elsewhere was @$500 as there's under 10 bends in it. - I only want steel - not stainless (thats <$240 in bends)

[EXHAUSTFIX]

dude,

got a 93' turbo'd 80 - Need a 3" mandrel setup to the rear diff crossover and then twin 2" out the back. (1 down each side V8 style. I have a 3" dump pipe with flange about 12" down to mate to. Want to take the exhaust inside the chassis rails behind the engine (have body lift to accomodate this.) and use at least 1 3" flexi for vibes. The turbo is booty fab top mount so the dump points straight down and currently has a 2.5" system following factory lines.

Price? timeframe to do the job? Thanks.

about $850 to do it properly 1 full day
ross

Cheers - will keep it in mind then - considering the original price from elsewhere was @$500 as there's under 10 bends in it. - I only want steel - not stainless (thats <$240 in bends)

just rember that you get what u pay 4 there is 223 exhaust shops in melbourne and only about 10 good ones so be carefull price is not everything quality comes into it someware