JDL Auto Design FR-S/BRZ LSX swap headers.

[Streetthrowback]

looks good

[Raven604]

How much 😦

[shiro]

Originally Posted by JDLAutoDesign

**Picture removed**

My God! F$cking beautiful

[cdrazic93]

Originally Posted by Raven604

How much 😦

Your eternal servitude.

[FirestormFRS]

Originally Posted by D K

Is there no room to go straight 'down' past the frame rail?

This is gonna bring a lot of heat to the engine compartment.

I'm betting not considering they didn't do that......

[Spartarus]

Originally Posted by FirestormFRS

I'm betting not considering they didn't do that......

Correct. There isn't room to run them anywhere else.... That said,
You can improve the room and run the collector much lower by removing the front crossmember and replacing it with a tubular unit... People have been doing it to Mustangs for years. I'm alarmed that ANY engine swap guys have kept the stock front crossmember - it's unnecessarily huge and in the way. It would be much easier to make a new crossmember with application-specific motor mounts than trying to make adapters for the stock mounting points, especially because the front crossmember just bolts on and off.

Example is a mustang front crossmember, the single picture is of the FRS front crossmember. Look at how much space you could open up if you replaced that... You could even delete the stock power brace and integrate it, and be left with a proper K-frame.

But look at me ranting. Anyway, anybody who's ever installed an overpipe knows how shit and oversized that stock crossmember is.

[Jesse@JDLAutodesign]

Originally Posted by D K

Is there no room to go straight 'down' past the frame rail?

This is gonna bring a lot of heat to the engine compartment.

It's super tight down by the steering rod.

We have heat shields for the fuse box, etc. I'm not too concerned with NA headers. Plenty of LS setups in other chassis with less room run twin turbos up top with manifolds, downpipes running right by/over the valve covers that produce much more heat. At this level of a build if you can't figure out simple heat management i'm not sure what to tell someone.

[flippy]

Originally Posted by Spartarus

Correct. There isn't room to run them anywhere else.... That said,
You can improve the room and run the collector much lower by removing the front crossmember and replacing it with a tubular unit... People have been doing it to Mustangs for years. I'm alarmed that ANY engine swap guys have kept the stock front crossmember - it's unnecessarily huge and in the way. It would be much easier to make a new crossmember with application-specific motor mounts than trying to make adapters for the stock mounting points, especially because the front crossmember just bolts on and off.

Example is a mustang front crossmember, the single picture is of the FRS front crossmember. Look at how much space you could open up if you replaced that... You could even delete the stock power brace and integrate it, and be left with a proper K-frame.

But look at me ranting. Anyway, anybody who's ever installed an overpipe knows how shit and oversized that stock crossmember is.

Uhhh where do i get those red subframe crossmembers from?

[AZFA20]

The stock subframe really isn't in the way and working around it is quite frankly not that big of a problem for the LSx series. The idea behind the the design of these headers was essentially long tubes in a mid-tube size package. They turned out for lack of a better description....... perfect. Heat management isn't even a concern for me.

With stock LSx manifolds in there, there are gobs of room. A log style for a turbo setup would provide a lot of room as well. Even with these very well designed long tube hybrids there is a surprising amount of room in there still. The FA20 is giant width wise so it makes for a lot of room to play with.

[Spartarus]

Originally Posted by AZFA20

The stock subframe really isn't in the way and working around it is quite frankly not that big of a problem for the LSx series. The idea behind the the design of these headers was essentially long tubes in a mid-tube size package. They turned out for lack of a better description....... perfect. Heat management isn't even a concern for me.

With stock LSx manifolds in there, there are gobs of room. A log style for a turbo setup would provide a lot of room as well. Even with these very well designed long tube hybrids there is a surprising amount of room in there still. The FA20 is giant width wise so it makes for a lot of room to play with.

I thought most shops had been forced to use a front sump pan because of the subframe... Some had to cut material from the pan to fit it. Unless you have a custom oil pan...

Insight would be appreciated. Looking at swap options again.

Originally Posted by flippy

Uhhh where do i get those red subframe crossmembers from?

Well, the red one is for a mustang, it was just an example. I was actually lamenting the fact that nobody makes a proper tubular crossmember or K-frame for this car. Numerous advantages, especially to engine swaps, but I don't want to thread-jack this thread to discuss them. There is just too much perfect here already.

[#maverick#]

Are those vband ends.

[Manji]

Originally Posted by Spartarus

It would be much easier to make a new crossmember with application-specific motor mounts than trying to make adapters for the stock mounting points, especially because the front crossmember just bolts on and off.

Disagree.

Cut OEM mounts off x-member. Then used Cusco FA20 mounts (because I already had them) rotated, and made new mounts from 1UZ to these, wasn't a lot of effort. Certainly a lot less than making a new crossmember would have taken.

Not saying that a new x-member wouldn't have been cool, but IMO it was unnecessary.

[AZFA20]

Originally Posted by #maverick#

Are those vband ends.

Yes

[Kdej1]

What a beaut.. What trans do you have mated up?
Also, what oil pan is that?