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2G 2G Custom made J-pipe needed?

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patman

5+ Year Contributor
106
61
Oct 19, 2017
Budapest, Europe
Hi guys!

I started my 16g conversion, that I have long prepared for. I took the T25 and all the stock FMIC stuff out, and put up the 16g to see how the Intercooler routing will look, and I found out there is something wrong with my J-pipe. So I have 2 J-pipes:
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One has a bigger bend (I would prefer this) and the other is smaller. I believe both of these are pretty standard, I see these in many builds.

My issue is that they just wont fit. The smaller one hits the Intake pipe ( I have a Dejon intake), and the big one just never gonna fit. I cannot even test fit it there: It hits the intake and the radiator fan too, by a lot. (I have mishimoto, with stock fans)

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So I'm thinking about modifying the bigger bend into making it come down between the two fans in some way like this:

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Has anyone experienced the same issues? I just don't see how anyone fitted these to their cars, I remember there was a bit more space with the OEM intake and radiator, but not that much. I cannot even try these on. Do you think going down between the two fans would be a good way? I cannot think of anywhere else. Can you guys send my some photos of how do you have your J-pipes fitted? I want to know for sure before I start cutting and welding.

Thanks for the help! Ans sorry for the crappy pictures, I couldn't find any help to hold the pieces for me, It was not easy taking a good pic.
 

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I opted for a slim fan and shroud setup when I ran a 20g. I had problems with j pipe fitment at the time as well with the factory fans.

I opted to run one like in the picture below. Hard to tell in the picture which way your intercooler pipes come from but mine both came from the passenger side.

It was very tight though still with the CAI. I remembered having to adjust it too because the lower rad hose was pushing into the weight on the transmission shift lever as well.

It’s been a while since I tackled that problem and may be forgetting something else I did.

-Daniel

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Yes, it wants to go to the passenger side, something like this ( from Justins build thread)

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But when I put the radiator and intake parts back together, there is just not enough space left. Btw I am also running oem exhaust manifold, I heard that fp also saves some place, bit I don't have that.

So I am thinking twisting it a bit and going down around the middle something like this:

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I found that Slow Boy Racing made a similar J pipe that I need. But those pipes are hard to find, so I will make a similar one, and probably wrap it in a heat reflecitve wrap, It seems like it's gonna be hot that way...

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I found that Slow Boy Racing made a similar J pipe that I need. But those pipes are hard to find, so I will make a similar one, and probably wrap it in a heat reflecitve wrap, It seems like it's gonna be hot that way...

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You technically bought wrong J pipes for your piping route. Those J pipes are for SMIC or FMIC that have both the inlet and outlet pipes through passenger side, like old greddy, griffin etc.
Nowadays the J pipe that goes to driver side is common. So actually it's easier to find than yours. Sometimes I see someone who wants to go with a SMIC is looking for those J pipes.
 
You technically bought wrong J pipes for your piping route. Those J pipes are for SMIC or FMIC that have both the inlet and outlet pipes through passenger side, like old greddy, griffin etc.
Nowadays the J pipe that goes to driver side is common. So actually it's easier to find than yours. Sometimes I see someone who wants to go with a SMIC is looking for those J pipes.


I think a few of the vendors still sell the j-pipe you need, as well as eBay. What Hiroshi said is dead on.


To further add, I can confirm that with the driver's side pointed j-pipe on a 2G, you can keep both stock fans. :) It's a nice feature because the OEM fans are a beast.
 
That looks the same as yours, goes to passenger side. You should confirm with the vendor before buying.
The direction should be like the pic with the solid red line you draw in post #4. So look for one that points like the solid red line (compare with the two bolts position).

More J pipe pics here. May be you can refer.
 
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I have a 2g ebay j pipe hooked to my stock side mount, it looks like the one you quoted for justin.

its a 2g j pipe for side mount intercooler. you have to run a stock intake tube because the curve is so severe. also the pipe is 6 inches too long to fit, I was lazy and slipped the top pipe into the lower pipe and used 4 hose clamps on the coupler. it holds ten psi but it will fit the stock fan, but I only have negative things to say about its fitment other than that
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I had a similar issue, but ended up deleting the front roll stop (for now). My mounts are really stiff, and having just 3 works well enough to where there's no movement from the engine. So my lower pipe setup now occupies that location due to the smic and I didn't have to modify my fan shrouds. Eventually I'll get a better setup and reinstall the front roll stop. But this for now gets the car one step closer to running and moving on its own.

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Thanks for all the replies!
I cut my J pipe and after a bit of trying I managed to find a way to fit it. Now all it takes is a little more welding, then I'll figure out a way to reach the intercooler.

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The J pipe thing has always been this way. We have a box of different ones that when ever someone new around here needs one we just grab and see. Always tight and a pain deal.
 
Only reason it fit was the slim fans.
FP Manifold, 68hta, slim fans, custom 3 inch intake(speed density car so maf eliminated) and my fmic has inlet and outlet on passenger side, so used Extremepsi's 16g install kit for sidemount and it's a TIGHT squeeze. No way stock fan would fit without rubbing

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