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View Full Version : 3" 1jz downpipe ?

Zerocool
05-02-2005, 05:46 PM
Hey sorry I'm a newbie to the 1jz, on just wondering how many of you are running a full 3" pd off of your stock twins? Did you have to have it made custom or can you buy one that will fit?

Is the mkiv dp's interchangeable to the 1jz's? When I get my 1jz id like to run full 3" but is 3" to much for the 1jz? Thanks guys in advance. BTW I did search but I only found that somebody had a custom SS 2.5" made.
drunk_medic
05-02-2005, 08:08 PM
Trust/Greddy makes one.. I believe 80mm.
Trust_GTE
05-02-2005, 09:28 PM
why dont you just wait for BIC to make one, he'll probably have the Y-pipe to go with it.
becauseican
05-02-2005, 09:45 PM
why dont you just wait for BIC to make one, he'll probably have the Y-pipe to go with it.


Very soon.
Zerocool
05-02-2005, 09:54 PM
Oh i think i maybe very intereasted in this :) keep an update for us please...
SupraSpeed
05-05-2005, 01:53 AM
yes, keep us updated!!!!
Kazooie
08-23-2006, 01:23 PM
i have the one from trust,
OneJoeZee
08-23-2006, 01:24 PM
Very soon.


year old thread...

what happened to this?
bigaaron
08-23-2006, 01:28 PM
I have been talking about it for about that long too, so it's about time to do it.

Would you rather have a mild steel dp at a awesome price or a full stainless one at a great price? How many people are interested in buying one of these? Keep in mind that you can't see much of the dp when it is installed, and the mild steel will be either aluminized or high-temp painted so it will not rust.
rakkasan
08-23-2006, 01:41 PM
I have been talking about it for about that long too, so it's about time to do it.

Would you rather have a mild steel dp at a awesome price or a full stainless one at a great price? How many people are interested in buying one of these? Keep in mind that you can't see much of the dp when it is installed, and the mild steel will be either aluminized or high-temp painted so it will not rust.


option for both? what kind of money are we talking about here? 935motorsports has a y-pipe/DP for under $300, right?
bigaaron
08-23-2006, 02:27 PM
Mild steel for less then $150. Full stainless for less then $200.

And btw, that y pipe is great....until you see how much work it is to install! With the engine in the car (or out of the car) removing the turbos is a real bitch. Once you took them off you might as well throw a single on there.
rakkasan
08-23-2006, 02:59 PM
Mild steel for less then $150. Full stainless for less then $200.

And btw, that y pipe is great....until you see how much work it is to install! With the engine in the car (or out of the car) removing the turbos is a real bitch. Once you took them off you might as well throw a single on there.

so no y-pipe, just the DP? Is the y-pipe a huge restriction?
JCP
08-23-2006, 06:39 PM
yes the y-pipe is a huge restriction.
Troyota
08-23-2006, 06:44 PM
It's a big restriction, but what Aaron is saying that if you are going to go through the hell to replace the thing, you almost might as well go single. It's apparently a PITA to remove and install, especially with the engine in the car.
suprastanger507mgte
08-24-2006, 10:22 AM
You can order the same one from the asian dude on ***bay for 225shipped to your door.and shipping is prety quick from him too.
becauseican
08-24-2006, 12:05 PM
BIC performance now offers a 3" mild steel downpipe for the 1JZ, sorry no Y pipe though, that is way to much work for the money people are willing to pay. Also, I now make a bolt on 3.5" cat back exhaust !!!!
Troyota
08-24-2006, 12:08 PM
What type of Muffler do you use?!?
935motorsports
08-24-2006, 03:25 PM
We make 3" downpipes as well, so as you can see there are plenty of options. We also get HKS downpipes now and then.

The thread is so old though, it should be restarted.

Y pipes are really only good for engine swaps. Trying to install one after the engine is in, is a real pain.

We stock the Y pipes for 300 shipped.
Troyota
08-24-2006, 07:39 PM
Anybody know for sure what the power difference is between a y-pipe/downpipe upgrade...and just a downpipe...I got a pretty good deal on just a 3" downpipe to mate to the stock y-pipe. It probably wouldn't be worth my while to purchase a y-pipe/downpipe combo when I already have this downpipe.
mattjk
08-26-2006, 03:47 AM
when you say "it's a pain to change", how would you compare it to changing the turbo on an MR2 turbo? How about a 2002 wrx? I've done both and people say those are a pain.
OneJoeZee
08-26-2006, 03:53 AM
taking off the turbos is a pain in the ASS.

btw matt, i was at the shop the other day. i saw your block off plate. i cant use it unless i have a cap for the pressure side too. if you can find something let me know
mattjk
08-26-2006, 04:06 AM
hhmmm, ok I will try to find it.
bigaaron
08-26-2006, 04:36 AM
when you say "it's a pain to change", how would you compare it to changing the turbo on an MR2 turbo? How about a 2002 wrx? I've done both and people say those are a pain.

If you work fast it takes about 3 hours to get them off and back on, if you have all the right tools. Many of the nuts are hard to access with enough torque to break them free. It's not THAT bad but if you do it once you will not look forward to doing it again :biglaugh:

I hear the y-pipe does make a big difference, and it is a lot less money then a aftermarket turbo setup.
mattjk
08-26-2006, 04:40 AM
ahh ok. I got the sense that it was almost impossible to do...

Get on it, man! I'll buy a downpipe from you.