[Telion]

Just a few more pics to help viualize. Dethred I apologixe I typed up a couple more paragraphd and my laptop got hot and shut down so I will re-type it tomorrow

Oviously the mounting location is a little off but you get the idea

^ why I am thinking of a standard mount and wraping back around to the X-pipe

More of the plumbing also came in today

 

[Telion]

Tel. i really hope you didnt buy 350z headers. when i suggested it i was talking about aftermarket turbo manifolds for the 350z, not actual 350z headers. cuz the last pictures you put up were of headers....

In fact I did but not because of your comment there were many other reasons that have led me to pursue buying these as I have thought through this build the two greatest being that I

A. am not cutting up my OBX's and
B. had to satisfy my curiosity as to teh fit.
C. Is somewhat latent but equal length headers can't be all that bad right?

The goal is to create a whole new exhaust system specific for this build. I knew what you were referring to and that it would not work do to space limitations where the tranny is, they would sit too low. Thank you for the concern though. I had actually been doing a little looking into these headers since I first got teh tt bug which was well before my first post about it

 

[Telion]

At what point will the theoretical benefit of the X-pipe be out-weighed by the used space, extra piping length between combustion and turbo, and price of the piping (etc).

The idea of twins where they are currently mounted is ergonomics, closer-to-equal manifold length Agreed. The whole benefit of having twins in such a location is similar exhaust dynamics on each cylinder bank also agreed with the X-pipe to aid in this. Having two turbos on one side of the engine bay, or a single turbo on one side was presenting up to and over a foot of difference between the exhaust manifolds. precisely>If the exhaust manifolds can be routed between the valve covers and wheel well, then you can probably get the exhaust length to within few centimeters of each other. ( I would think that space would be better suited for a Y-junction from the turbos' exhaust to be sent out one 3" pipe over the driver's side axle as previously discussed)agreed this part of my idea has not changed.

the benefit would be less bends and balance pressure as the exhaust enters the turbos. I didn't dicuss heat or scavenging because this is where I find the benefit of the X-pipe as minimal where as part of the exhaust side on an NA setup it would have a greater purpose.
what has a greater affect a 6" pipe with a 180 degree bend or a 12" pipe with a couple of 45 degree bends?

All in all in order to maximize the build with all of ^ in mind I think I need to pull the engine and see if I can tuck everything to fit it so that I do decrease the amount of piping and bends for maximum gain and decreased lag. but dont forget that I will still try to pull off the forward mount setup prior to going with what I am going to call the standard crossover setup.

 

[legendfire]

In fact I did but not because of your comment there were many other reasons that have led me to pursue buying these as I have thought through this build the two greatest being that I

A. am not cutting up my OBX's and
B. had to satisfy my curiosity as to teh fit.
C. Is somewhat latent but equal length headers can't be all that bad right?

The goal is to create a whole new exhaust system specific for this build. I knew what you were referring to and that it would not work do to space limitations where the tranny is, they would sit too low. Thank you for the concern though. I had actually been doing a little looking into these headers since I first got teh tt bug which was well before my first post about it

lol thats three reasons. i hadnt thought that spacing with the tranny would be an issue. from the pics it looks like the 350 headers would come out pretty close to how far a turbo would. im sure there is a way to make a turbo tuck nice and neat on either side. the only reason im so persistent about this is because it would eliminate any need for an x-pipe or any worry about even exhaust pressure. im not trying to come off arrogant or anything it but in my mind the extra time and effort it would take to make a manifold fit would be well worth the simplicity it would provide, if that makes sense. even if the headers dont end up working for a tt setup, they would be pretty sick to have on an na setup. anyways im not saying you dont know what youre talking about because i know you know ur shit. just my .02

 

[reboticon]

When it comes to just moving air, a 12" pipe with 2 45 degree bends will flow more than a 6" with a 180. As to whether or not the heat loss from the extra 6" of pipe negates the extra volume of air...

If you can't make it all fit, Im more than happy to lend you my Sawzall + Sledge "installation kit"

 

[legendfire]

If you can't make it all fit, Im more than happy to lend you my Sawzall + Sledge "installation kit"

lol

 

[Dethred]

^ why I am thinking of a standard mount and wraping back around to the X-pipe

More of the plumbing also came in today

Labrat has a semi-functioning single turbo design with huge length discrepancies between the manifolds and the turbo. From what I've read, his lag isn't terrible, so I think you'd have barely any with two small twins, even less piping, and the increased exhaust velocity from having each turbo so close to the corresponding cylinder head. Look at some other twin turbo setups and find one that needs an X-pipe.

PS: Visualize the 350Z header in that picture rotated 90* clockwise, with the pipes extended to meet the cylinder head; it would probably just fit in there. Check these out too: 90-96 300ZX Headers - The Z Store, your Datsun & Nissan Z & ZX source!

 

[Telion]

ok crazy question but I have spent a few hours in indecision, blue couplers or black? they run 10.00 to 15 ea so though it seems like a small decision it is a costly one. keep in mind the yellow is staying gone the purlpe is coming back and tehre will be some charcoal grey. And how come know one uses crinkle paint?

 

[reboticon]

Blue if they have a shiny finish and the yellow is gone, black if its a dull finish. Whats crinkle paint?

 

[GrumpySteelMan]

ok crazy question but I have spent a few hours in indecision, blue couplers or black? they run 10.00 to 15 ea so though it seems like a small decision it is a costly one. keep in mind the yellow is staying gone the purlpe is coming back and tehre will be some charcoal grey. And how come know one uses crinkle paint?

Personally I'm a fan of black, since I like a factory look.

 

[ACKY91]

WHat about that?

 

[92drls]

Thats the ticket!!

 

[gsridah]

telion,
your knuckles have to be bloody all the time!!
I know when i do anything to my legend my hands are cut up, and you are trying to fit more stuff under the hood...wow...great work....

Quick question about the exhasut being routed towards the radiator...have you considered the amount of heat your radiator will absorb from the exhasut...I dont want you to end up with a turbo legend that you can only run 15 minutes at a time...lol...
I know you can put shields in there but then shields limit the airflow...
just something to keep in mind...

 

[Telion]

My knuckles don't get bloody but I do manage to get a small cut about every other time I work on it for some reason (seems that way anyway). yeah I had been thinking about the heat factor alot lately especially where all the piping is in the spot behind the readiator. Actually last night I started playing around with rotating the x-pipe 90 degrees and sliding it between the front suspension frame support and the radiator. or directly under the crank pulle in the same fashion. Both seem to be good options and possible and it removes a lot of the engine bay piping clutter.

PS 2nd pic is prety cool too, and pretty close to accurate, nice.

 

[Telion]

Since I am back in a waiting stage for header flanges and a little more intercooler piping (why the hell are they priced so you have to buy a kit or blow the same price on 6 pieces). But anyway I had a moment (few hours) of free time so I was playing around again with the whole idea of eliminating some of the cutter between the engine and the radiator and re-ran the piping yet again still teh same concept but the X-pipe is getting relocated under the tranny (hopefully this will be sixes) I did free up some room and possibly made things a little easier on myself. I also finished up the intercooler piping going into the engine bay. Here's a few pics. Yep pretty much the same, the planning, purchase, and preperation stages take time.

Here is a shot of the passenger side, and as you can see the turbos will need to be clocked and the pipe near the passenger cam cover will need to come foward about a couple inches.

Hear is an updated shot of the drivers side, there's still some re-wiring work to be done over there but the intake pipe is in and I will put the washer fluid close to where it was bot with some subtle changes and possibly a smaller or different shaped container so the overflow will also fit.

Here you can get an excellent shot of how much room has been free'd up
both from stock and from the previous setup

here is a closer shot you can't really tell but the exhaust still comes into a Y (not putchased yet) that will join the two 2.5" pipes to a 3" outlet

Acloser shot of the driverside

Another shot of the bay from the drivers side. (getting redundant yet)
A side note I have been thinkink about piecing together a silicone and 38mm aluminum piping replacement for the radiator hoses.

Here is a shot of the re-worked drivers side intercooler piping figured going with an aluminum 45 degree elbow vs silicone.

And here is the passenger side on the passenger side for the same reason it just seems right lol

Another thing which I will duplicate in another thread for better exposure but does anyone know the I.D. and length of the hose between the power steering rack? and which vehicles come stock with an aluminum power steering reservoir? (Supra?)

 

[GrumpySteelMan]

Make sure you clock those turbos so that the oil drain is as close to vertical as possible.

 

[Telion]

Indeed while I have you where should I put the gravity feed catch can?

 

[uPnoRthACme]

Indeed while I have you where should I put the gravity feed catch can?

I'd go where ever you have enough space to accomodate the can without cluttering up your open space with the feed line to the can. Mount it slightly lower than the outlet since it's gravity fed, no brainer.

 

[GrumpySteelMan]

+1 he got it right.

 

[Telion]

Scored the Y-pipe Magnaflow 2.5 dual inlet and 3" outlet