This it the 4" downpipe in the kit from the States. The angles are different








And when I finally got the sucker up there and butted up against the turbo outlet flange it wouldnt line up with the rest of the exhaust



Back when I got it was about $650 delivered. Cost me another $400 at the exhaust shop the get it fitted.

 

Bryan, you must have a spare tip that you want to sell.

Also my 4" MBRP from Clay is still on the boat (USAtoAUS) for a couple more weeks. I will def NOT try to fit it myself & take it to the exhaust shop once I get the box here.

Little bit worried that the DP's are wrong! Can't understand it! I thought the only difference was the RHD steering would be in the way. If the DP is wrong for our trucks, surely it would be wrong for the US bro's trucks as well.

 

I have also ordered a 4" DP from Clay. It should be here in a couple of weeks. What will be interesting is if it will fit my truck, especially seeing as it is a US built vehicle. Time will tell.

 

A few hangers had to be moved as well. There seems to be a fair bit of difference. But saying that I rang all the exhaust shops around for a quote and the cheapest I got was $1600 and that was with a 3.5"DP. So with the hardware you are getting and a fitting charge I believe you are still in front.

 

I notice the picture of the Aluminized MBRP 4" system comes with only 2 welded mounts with the rest of the mounts being clamp-on.

$285 for the exhaust, + $150 shipping + $400 fitting is still a better result (4" DP) & half the cost of the local equivalent!

 

Hhuumm Bwyan; seeing the twubble you a Bwian had, I might just stay with what I alweady have. Sounds like a weeeal PITA .

I don't actually have any High EGT issues even pulling heavy up hill as long as you drive it a bit like a 'manual' and knock it down a cog as the climb begins and keep the torque up there by keeping the rev range around 2100 RPM. That seems to be my sweet spot for pulling any gradient .

The only reason I was lookin' at changing what I put in there was to put something in that was designed for these trucks.
However there is a lot of argument out there that it's not really the whole 3.5" OEM system that can set high EGTs and poor efficiency flow, but mainly the OEM oval and staggered box with 3" internals that the EG hits once leaving the DP .
That's why there are a lot of converts to the simple (and cheaper) BTM (Big Truck Muffler) mod to the system and I guess I am more so now.
Just by putting a straight through 3.5" BTM makes a noticable difference.
I've basically done that with a 3.5" straight through Cummins truck muffler.
With mine exiting just in front of the rear wheel has also removed the extra length of pipe, bends & loops the OEM does from the staggered muffler up over the axle and out the back. Those extra frictional forces adding to the poor flow efficiency over that extra length is therefore eliminated .
I've got a neat sound coming out of it and a nice whistle sound as the turbo spools up .

I guess with all that waffle I'm convincing myself to leave well alone .

Yours and Bwians input has been much appreciated and pwobably saved me a lot of hurt (kuckles and back pocket).

Cheers,
Weg

 

I'll put some pictures up once I get (the shop to put) mine on. I opted for the muffler delete, but may go for the Reg BTM fix if it's too loud in the cab. From the youtube vid links on the US Bro's site the only obvious noise difference was the turbo whine like Reg was talking about

I think Brian's photo above showing the Ford Australia effort against the 4" DP speaks 1000 words about restriction - the Aussie stock DP is very asthmATic looking!

 

G'day Fellas,

I do not recall seeing my OEM DP looking like the one in this photo .

Maybe it is and I've just not looked close enough at it. I'm sure my 3.5" OEM is similar in design to the 4" alongside it.
My truck was rolled off the Brazil assembly line in November 2005. So was there a better one piece DP pipe fitted sometime later after the 2003 builds on these trucks .
Brian; yours is a 2003 Brazil build isn't it ?
Have you had a good look at your OEM DP Simon? Yours is a 2005 and same year as mine, but when in 2005 was yours rolled off assembly line?

As I'm still at sea, I can't duck outside and confirm the DP on my truck .

Cheers,
Reg

 

Yes Reg , 2003. Been a long time now but if memory serves me correctly it was more 3" than 3.5".

 

Reg, my truck is also a 2005 model, and the stock DP looks to be same cobbled together piece as Brian's 2003 version.

 

Hummmm,

I'll have to wait until I get back home to take a 'serious stair' at what I've got. But going by you say about your 05 I'd say I'm in for the same rude surprise .

And these factory Engineers have the hide to call themselves that .
You certaintly wouldn't own up to a 'factory' presented ad-hoc set up like that to a customer.
With the mark up they put on these RHDs landed here in Aussie you'd have at least thought Ford Aust would have put a proper designed DP to suit and not fit some abomination like that.

Looking at Brians pic comparison I've seen better back yard jobs done. It looks like a real gas flow choke. I realise the one it's compared to is a 4" but it doesn't look 1/2" smaller, it looks more like an 1" smaller in diameter .

Keep us posted on how you go getting yours all fitted up Simon .

Cheers,
Reg

 

The hardest part will be finding some one who will do it. As soon as you mention 4" downpipe they run. I sent Artie down to the guy that did mine and he made it clear to Artie that he doesnt want to do any more.

 

If you are in melbourne weg,these lunatics will be happy to do anything from the turbo back,any size..

These guys modded my down pipe and did the side pipes i had..

Custom Made Performance Exhaust Systems | Extractors | Mufflers | Truck Chrome stacks

 

Byran had them squeeze fit in a 5" system. Hopefully the exhaust guys in Canberra will be able to fit the 4" system in. I have read a post from a UK F250 RHD owner that they had to make a couple of well positioned dents in the larger DP to keep it off something (I suspect something to do with the steering shaft).
Luckily in the one-horse town I live in the exhaust shop hasn't been bitten by a bad fitting experience. I'll level with the shop and ask for an estimate but let them know if it ends up being a much more complicated experience than they anticipated I'll pay extra. I rather have them do a good job than a cheap job.

 

Get em to cut of the flange from ya original and weld it on the 4" then it will fit the turbo flange. You also need to take of about an inch between the flange and the first elbow down. Then you need to put a slight indent where the DP rests against the up pipe. That will stop it from rattling against the panel lip on the firewall.