G35 Sedan V35 2003-06 Discussion about the 1st Generation V35 G35 Sedan

OFFICIAL "What Mods Should I Buy?" Sedan Thread

  #1261  
Old 05-21-2019, 10:10 PM
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'03 Sedan Sport/K&N Drop-In/Stillen Z-Tube/Helix TBS/MD 5/16" Plenum Spacer
So 5/16", metal, and used isn't a bad idea either.

Perfect! I did post a request for price in another thread and even saw 10% off somewhere. I'll look around. Thank you guys for all your help!
 
  #1262  
Old 05-21-2019, 10:18 PM
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Just make sure to ask if the gaskets are intact if buying used. And when installing, make sure you don't pinch the oil filler tube rubber collar in there and follow the instructions for torque specs and pattern. You can warp the plenum top if you mess that up and then you have vacuum problems.
 
  #1263  
Old 05-21-2019, 10:52 PM
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'03 Sedan Sport/K&N Drop-In/Stillen Z-Tube/Helix TBS/MD 5/16" Plenum Spacer
Originally Posted by G2B35AGN View Post
Just make sure to ask if the gaskets are intact if buying used. And when installing, make sure you don't pinch the oil filler tube rubber collar in there and follow the instructions for torque specs and pattern. You can warp the plenum top if you mess that up and then you have vacuum problems.
Good call - I'd rather go new but if I do go used I'll ask about the gaskets themselves. Would suck to save the money then lose it by having to get a gasket set. Thanks for the reminder- I saw a video where a guy warned about that, about getting the rubber part caught in there. My brother is going to be helping me out so I'm pretty confident we can do it.

One more question though for anyone who has or hasn't chimed in yet my 1.B. up there, I've seen the "angled" spacers advertised. Does anyone have any experience with these? Are they better, worse, or just a gimmick?
Ex: https://www.z1motorsports.com/z1-pro...er-p-2854.html advertises "It is an angled spacer. 7/16th to 3/8th." EX2: https://aamcompetition.com/i-4633773...um-spacer.html

I did search and find this thread: https://g35driver.com/forums/engine-...um-spacer.html but it's inconclusive. I would think the "flat" plenums would keep the rise/run of the original, so close to stock ratio just bigger.... but aren't most engines flat for a reason? Anyway again thank you and sorry to turn this into another one of those plenum threads!
 
  #1264  
Old 05-23-2019, 08:20 AM
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G35 sedan w/ too much money in mods
You might be able to find a good deal on a used one somewhere.
 
  #1265  
Old 05-23-2019, 11:23 AM
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I've had a Blox spacer on my car for at least 2 years and probably a decade before that (installed by PO.) It's plastic so it WILL crack if you overtorque it, but on my car it's held up great with no indications of any issues, gets down to -15 F in the winter and I beat on it pretty hard during the summer. I daily the car in all conditions. If you're trying to save $$ and can't find anything used, I say go for it.

You can overthink it as much as you want to but in the end either spacer will get you a barely noticeable amount of horsepower without a tune. Also you should be fine just using grey gasket maker if it is missing the gasket.
 

Last edited by cswlightning; 05-23-2019 at 11:29 AM.
  #1266  
Old 05-23-2019, 12:36 PM
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'03 Sedan Sport/K&N Drop-In/Stillen Z-Tube/Helix TBS/MD 5/16" Plenum Spacer
Originally Posted by cswlightning View Post
I've had a Blox spacer on my car for at least 2 years and probably a decade before that (installed by PO.) It's plastic so it WILL crack if you overtorque it, but on my car it's held up great with no indications of any issues, gets down to -15 F in the winter and I beat on it pretty hard during the summer. I daily the car in all conditions. If you're trying to save $$ and can't find anything used, I say go for it.

You can overthink it as much as you want to but in the end either spacer will get you a barely noticeable amount of horsepower without a tune. Also you should be fine just using grey gasket maker if it is missing the gasket.
Thanks, I was able to find a used one for a decent amount off. Yes, the tune is next. I will have to do some searching in my area... so far all the mods have been intake related, so I don't know their real impact just yet. I mean they sound better and it feels a little more fun, especially in the 3-5k range, but yeah that's all the "butt dyno" I hear about all over hahaha. I'll try and get a decent tune and I have a couple of custom decals I'm making. Then hopefully I've got a nice lil sleeper that's fun and comfortable to drive. Thanks for the input!
 
  #1267  
Old 05-23-2019, 12:59 PM
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I don't have a tune myself, can't justify over $700 for maybe 15 WPH and some driver feel mods. I figured every cent I don't spend on the VQ is another I'll be able to put into an LS swap when the time comes for the G to become a track car.
 
  #1268  
Old 05-24-2019, 07:41 AM
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Originally Posted by [email protected] View Post
6. Motordyne, because they're a good company and stand by their stuff.
Big +1 for this. Plenum spacers aren't expensive. Don't be tempted to save a little bit of money on such a cheap part. Motordyne will give you an "install and forget" solution.

Originally Posted by [email protected] View Post
7. The plenum spacer simply corrects an engineering mistake made by Nissan. I'm 100% sure that if Nissan was aware of the impact it had then they would have simply made the plenum a little larger. There are only benefits and absolutely zero reason why you shouldn't install one, a VERY cost effective upgrade.
Originally Posted by [email protected] View Post
and I live in a place where we get to zero degrees in the winter.
Cleric is right and he doesn't even live somewhere hot. When you see how different your car runs on a very hot day, it's a big deal IMO. Well worth it.
 
  #1269  
Old 05-27-2019, 09:40 PM
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G35 sedan w/ too much money in mods
I sold him our MD 5/16" so he's good on a spacer. nasch I hope it arrived today and you've had a chance to install it. LMK if/when it's on and how you like it.....
 
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  #1270  
Old 06-09-2019, 06:51 PM
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OEM trunk or OG duckbill?







As the title states, Iím thinking of getting an aftermarket trunk...

I am torn between keeping it OEM w/ the sport spoiler or going with the duckbill.

Will the duckbill go well with the G as it is?

Your thoughts?
 
  #1271  
Old 06-09-2019, 08:20 PM
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The duckbill looks better for sure, I've been very torn on that decision myself.
 
  #1272  
Old 06-09-2019, 08:34 PM
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'03 Sedan Sport/K&N Drop-In/Stillen Z-Tube/Helix TBS/MD 5/16" Plenum Spacer
I think the duck bill looks too short and too pitchy. Of course I'm a sedan owner so I'm used to things being a little looking looooooong
 
  #1273  
Old 06-09-2019, 09:03 PM
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This is, of course, all opinion. What you like is what you like.

I candidly prefer neither. To me, the hallmark of the G coupe is its clean curving lines. The surfboard completely interrupts that; the duckbill, while curving, does not flow smoothly with the lines of the car. It's an upsi in a place where the rest of the car is falling off with that beautiful bootie.

Correct me if wrong, but I believe the surfboard improves coefficient of drag by .01. I do not know performance-wise whether the duckbill is a plus or minus.
 

Last edited by G2B35AGN; 06-09-2019 at 09:38 PM.
  #1274  
Old 06-09-2019, 09:03 PM
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Decisions, decisions... lol!

Here are a few more pics.

Itís nearly not as aggressive as other duckbills; the ones with thick side profiles.
 
  #1275  
Old 06-10-2019, 08:27 AM
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G35 sedan w/ too much money in mods
If your car was bone stock I'd say no spoiler. But with your vented hood I think the duckbill would be a great bookend to tie the front to the rear. I say go for it!
 

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