Lusting for a twin turbo setup, and would like (helpful) ideas - Page 8

Telion · 07-07-08, 01:06 AM

Quote:

Originally Posted by Dethred

Thanks for understanding. I want this to work and for someone to make and sell ME a kit eventually

.

I am not sure if those 350Z turbo manifolds would even fit between the head and the wheel well. Hell, it'd be a chop job and you'd be doing some cutting, but maybe running the manifold up between the wheel well and the cylinder head. Kyle seems to have gotten a pipe to make it to the turbe from the passenger-side head. The other side shouldn't be too much different (alternator?) . Its been about a month since I've really looked at the engine bay of my Legend so I am not sure. Don't worry about Supra style or anything like that. Just get a picture of Gary D's unfinished TT project and see how awesome that looks.

Now with proper tuning and some supporting mods, it just takes time, money, and will power to get this thing going. If you want to make a kit that others can make, you want to avoid things like new radiators and fans, etc. It'd be much easier to say "You have to remove your A/C compressor for this setup" to a speed nut than to get him to buy even more stuff (I mostly say this because I have a relatively new radiator

).

Thank you and that is great advice and true. This is a personal project with little to no intent to kit together for others for many reasons such as the ones you mentioned and the fact that I don't want people to try to hold me responsible for what ever goes wrong in their attempt to do this based on a kit from me. I will reserve that right for the supercharger kit (ewe that was prematurely said

).

Dethred · 07-07-08, 01:25 AM

Well, at least consider selling piping and stuff that is custom made, leave the rest up to buyers to pick and then there is little to blame on you (unless there is a boost leak from bad welding

).

Telion · 07-07-08, 01:52 AM

lol that works,

On a side note an astute eye noticed this would never work because my example was of a sedan and I have a coupe so I fixed it

Dethred · 07-07-08, 02:06 AM

Its difficult to tell how the pipes are being routed in that diagram.

Telion · 07-07-08, 02:33 AM

Quote:

Originally Posted by Dethred

Its difficult to tell how the pipes are being routed in that diagram.

yeah I agree I will try to elaborate

pipe A starts at the OBX header routes upward at an angle over the backside of the tranny along the fire wall just above the heater core house the out to the point where the MAP box was then toward the front of the car

pipe b starts on the passenger side of the OBX headers and comes across the trannys kick plate then up near the steering shaft and then under the OBX headers, up and over the drivers side axle then up into the engine bay where the ac was.

pipe c starts under the OBX headers then follows the same path as the headers into the engine bay (the rest is just exhaust).

Dethred · 07-07-08, 02:46 AM

Please consider having them each on their own side of the engine bay with minimal distance between the heads and turbo. It'll make it easier and more effective. If you're worried about looks, just look at Gary DePriest's setup and realize that with everything crammed to one side, it will be a bit messy.

Telion · 07-07-08, 02:49 AM

I am still considering it especially if these 350z headers pan out.

legendfire · 07-07-08, 04:22 AM

Quote:

Originally Posted by Telion

I am still considering it especially if these 350z headers pan out.

yea you should check out the spacing on the 350 manifolds or you can look and find ones that might be closer to what you need. if you do end up finding a set that will work out it should definitely make plumbing the system easier and less complicated. the other good thing is that they come with turbo flanges already welded on. as far as space in between the engine and fenders idk. you could go with wheels with greater offset and then put a slight indent in the fender where the turbo would sit. as long as its not touching and you have a good damper on your engine that keeps it from rocking too much then it should be fine. Nissan Performance Racing Products for International Sales from SSAutochrome Inc. check out the skyline low mount manifolds and the stock replacement manifolds. the 8th and 17th from the bottom. before anyone tries to say that the skyline is a straight 6. ya i know, but these are two separate manifolds for a tt setup.

legendfire · 07-07-08, 04:44 AM

Project Infiniti G35 Twin Turbo | G35TURBO.COM Heres another possibility. the manifolds on this kit look like they tuck in pretty neat.

reboticon · 07-07-08, 05:58 AM

Well, a straight six is always going to have the exhaust ports on the same side though, right? Or is it different for you import guys and your crazy multi camshafts

I like the look of 1 turbo on either side of the engine bay, but thats just personal preference.

Question. I realize that on a racetrack, having both turbos as close to the ports of each head would be the best for optimal performance. In this case though, assuming he was going to drive it on the street, couldn't it actually be helpful to have one turbo further from the exhaust than the other? When i think of it, I see one turbo spooling earlier in the RPMs than the other. Wouldn't that actually help to increase the hp throughout the powerband, instead of kicking it all on at once? I used to drive my 7.0L on the street, and that much torque can get frustrating. Or have i got this figured wrong?

Dethred · 07-07-08, 01:42 PM

Quote:

Originally Posted by reboticon

In this case though, assuming he was going to drive it on the street, couldn't it actually be helpful to have one turbo further from the exhaust than the other? When i think of it, I see one turbo spooling earlier in the RPMs than the other. Wouldn't that actually help to increase the hp throughout the powerband, instead of kicking it all on at once? I used to drive my 7.0L on the street, and that much torque can get frustrating. Or have i got this figured wrong?

No. The compressed air is going to the same throttle body. There will just be more lag with one further away (how much is yet to be seen). There's a reason that people buy a pair of headers to gain power and keep their engine running smoothly. When you have two different exhaust gas paths with differing flow rates/velocity you going to have different combustion situations therein, which is not ideal.

Telion · 07-07-08, 07:10 PM

Ok I picked up a gasket from an 05' 350z and it looks fairly promising the shape and size of the holes are virtually identical to our cars. The difference as we pretty much knew was in the spacing between each port. in order to best determine the spacing I centered the two center holes which line up nicely and measured the variance on the outer holes. Each outer hole on the 350z is a hair over 1/2" wider than the Legends gasket. So I am thinking this could be worth a shot. At the price these are available for it would cost more than that just to buy the material for a custom set to be made not including labor, and even better I will not have to hack up my OBX headers. One thing I do need to consider though is the amount of stress that 1/2 would cause. I think it would be best to heat them up and correct the variance. here's the pics.

Dethred · 07-07-08, 07:22 PM

Do you plan to heat-bend to match?

Telion · 07-07-08, 07:39 PM

Absolutely, which led me to my next thought which was that I better not get the ceramic coated ones and just get the stainless steel ones where the flange is welded on this way the flange would be easier to remove and I don't have to contend with or ruin the ceramic coating when bending them to fit.

Dethred · 07-07-08, 07:42 PM

Get to it!

07-07-08, 01:52 AM	#108 (permalink)
Telion Of the Telion Chip Join Date: Feb 2006 Location: Hopefully In your ECU ;) Posts: 3,828 Car 1: White 91 KA8 5spd W/3.5, TII Cams & Manifold Car 2: White 91 KA8 JDM TII iTrader: (34)	lol that works, On a side note an astute eye noticed this would never work because my example was of a sedan and I have a coupe so I fixed it __________________ \/Provider of The Telion Chip click here\/ http://telionsite.com or search Telion Chip 3.5, TII cams,pnp mani & springs,Telion Chip,HID's,H&R's/Koni's,Addco Sway bars,TII calipers,RH C2's,R.J. shifter,DV8 EGR plate,CAI,OBX headers,2.5" exhaust,hi-flow cat,K2 muffler,Stage III clutch,S&D rotors, KVR pads, blackend damper, a CF hood, AFC NEO, 3.5 Aluminum pulley, & Web cams. C&R Racing radiator and more to come.

07-07-08, 02:49 AM	#112 (permalink)
Telion Of the Telion Chip Join Date: Feb 2006 Location: Hopefully In your ECU ;) Posts: 3,828 Car 1: White 91 KA8 5spd W/3.5, TII Cams & Manifold Car 2: White 91 KA8 JDM TII iTrader: (34)	I am still considering it especially if these 350z headers pan out. __________________ \/Provider of The Telion Chip click here\/ http://telionsite.com or search Telion Chip 3.5, TII cams,pnp mani & springs,Telion Chip,HID's,H&R's/Koni's,Addco Sway bars,TII calipers,RH C2's,R.J. shifter,DV8 EGR plate,CAI,OBX headers,2.5" exhaust,hi-flow cat,K2 muffler,Stage III clutch,S&D rotors, KVR pads, blackend damper, a CF hood, AFC NEO, 3.5 Aluminum pulley, & Web cams. C&R Racing radiator and more to come.

07-07-08, 04:44 AM	#114 (permalink)
legendfire Registered User Join Date: Jun 2003 Location: santa rosa, norcal Posts: 165 Car 1: 1994 6spd coupe iTrader: (0)	Project Infiniti G35 Twin Turbo \| G35TURBO.COM Heres another possibility. the manifolds on this kit look like they tuck in pretty neat. __________________ cashmere silver metallic 94 L coupe type2 6spd -5spd clutch and flywheel swap -weapon r sri -zfclubsport.com optimized throttle body

07-07-08, 05:58 AM	#115 (permalink)
reboticon Registered User Join Date: May 2008 Location: Knoxville Posts: 528 Car 1: 95 Black 4dr Car 2: 92 Blue 4dr Car 3: 71 429& 87 5.0Tbirds iTrader: (3)	Well, a straight six is always going to have the exhaust ports on the same side though, right? Or is it different for you import guys and your crazy multi camshafts I like the look of 1 turbo on either side of the engine bay, but thats just personal preference. Question. I realize that on a racetrack, having both turbos as close to the ports of each head would be the best for optimal performance. In this case though, assuming he was going to drive it on the street, couldn't it actually be helpful to have one turbo further from the exhaust than the other? When i think of it, I see one turbo spooling earlier in the RPMs than the other. Wouldn't that actually help to increase the hp throughout the powerband, instead of kicking it all on at once? I used to drive my 7.0L on the street, and that much torque can get frustrating. Or have i got this figured wrong? __________________ Fixing legends is easier than fixing lolcats, but the parts are way more expensive..

07-07-08, 07:10 PM	#117 (permalink)
Telion Of the Telion Chip Join Date: Feb 2006 Location: Hopefully In your ECU ;) Posts: 3,828 Car 1: White 91 KA8 5spd W/3.5, TII Cams & Manifold Car 2: White 91 KA8 JDM TII iTrader: (34)	Ok I picked up a gasket from an 05' 350z and it looks fairly promising the shape and size of the holes are virtually identical to our cars. The difference as we pretty much knew was in the spacing between each port. in order to best determine the spacing I centered the two center holes which line up nicely and measured the variance on the outer holes. Each outer hole on the 350z is a hair over 1/2" wider than the Legends gasket. So I am thinking this could be worth a shot. At the price these are available for it would cost more than that just to buy the material for a custom set to be made not including labor, and even better I will not have to hack up my OBX headers. One thing I do need to consider though is the amount of stress that 1/2 would cause. I think it would be best to heat them up and correct the variance. here's the pics. __________________ \/Provider of The Telion Chip click here\/ http://telionsite.com or search Telion Chip 3.5, TII cams,pnp mani & springs,Telion Chip,HID's,H&R's/Koni's,Addco Sway bars,TII calipers,RH C2's,R.J. shifter,DV8 EGR plate,CAI,OBX headers,2.5" exhaust,hi-flow cat,K2 muffler,Stage III clutch,S&D rotors, KVR pads, blackend damper, a CF hood, AFC NEO, 3.5 Aluminum pulley, & Web cams. C&R Racing radiator and more to come.

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07-07-08, 01:25 AM	#107 (permalink)
Dethred Hi! I'm Ryan. Join Date: Aug 2002 Location: Yorktown, VA Posts: 3,930 Car 1: 2008 Honda Civic Si Coupe Car 2: 92' Acura Legend 4DR iTrader: (2)	Well, at least consider selling piping and stuff that is custom made, leave the rest up to buyers to pick and then there is little to blame on you (unless there is a boost leak from bad welding ).

07-07-08, 02:06 AM	#109 (permalink)
Dethred Hi! I'm Ryan. Join Date: Aug 2002 Location: Yorktown, VA Posts: 3,930 Car 1: 2008 Honda Civic Si Coupe Car 2: 92' Acura Legend 4DR iTrader: (2)	Its difficult to tell how the pipes are being routed in that diagram.

07-07-08, 02:46 AM	#111 (permalink)
Dethred Hi! I'm Ryan. Join Date: Aug 2002 Location: Yorktown, VA Posts: 3,930 Car 1: 2008 Honda Civic Si Coupe Car 2: 92' Acura Legend 4DR iTrader: (2)	Please consider having them each on their own side of the engine bay with minimal distance between the heads and turbo. It'll make it easier and more effective. If you're worried about looks, just look at Gary DePriest's setup and realize that with everything crammed to one side, it will be a bit messy.

07-07-08, 07:22 PM	#118 (permalink)
Dethred Hi! I'm Ryan. Join Date: Aug 2002 Location: Yorktown, VA Posts: 3,930 Car 1: 2008 Honda Civic Si Coupe Car 2: 92' Acura Legend 4DR iTrader: (2)	Do you plan to heat-bend to match?

07-07-08, 07:39 PM	#119 (permalink)
Telion Of the Telion Chip Join Date: Feb 2006 Location: Hopefully In your ECU ;) Posts: 3,828 Car 1: White 91 KA8 5spd W/3.5, TII Cams & Manifold Car 2: White 91 KA8 JDM TII iTrader: (34)	Absolutely, which led me to my next thought which was that I better not get the ceramic coated ones and just get the stainless steel ones where the flange is welded on this way the flange would be easier to remove and I don't have to contend with or ruin the ceramic coating when bending them to fit. __________________ \/Provider of The Telion Chip click here\/ http://telionsite.com or search Telion Chip 3.5, TII cams,pnp mani & springs,Telion Chip,HID's,H&R's/Koni's,Addco Sway bars,TII calipers,RH C2's,R.J. shifter,DV8 EGR plate,CAI,OBX headers,2.5" exhaust,hi-flow cat,K2 muffler,Stage III clutch,S&D rotors, KVR pads, blackend damper, a CF hood, AFC NEO, 3.5 Aluminum pulley, & Web cams. C&R Racing radiator and more to come.

07-07-08, 07:42 PM	#120 (permalink)
Dethred Hi! I'm Ryan. Join Date: Aug 2002 Location: Yorktown, VA Posts: 3,930 Car 1: 2008 Honda Civic Si Coupe Car 2: 92' Acura Legend 4DR iTrader: (2)	Get to it!