Forced Induction Discussion of turbos , superchargers , and nitrous upgrades on the G35
View Poll Results: FI: What's under the hood?
Twin-Turbo, stock internals.
3
13.04%
Supercharged, stock internals.
4
17.39%
Single Turbo, stock internals.
2
8.70%
Twin-Turbo, 8.5:1 compression pistons.
3
13.04%
Supercharged, 8.5:1 compression pistons.
0
0%
Single Turbo, 8.5:1 compression pistons.
0
0%
4.3L Stroker kit, Normally Aspirated, 11.5:1 Compression.
3
13.04%
4.3L Stroker kit, Normally Aspirated, 11.0:1 Compression.
2
8.70%
4.3L Stroker kit, Twin-Turbo, 8.5:1.
5
21.74%
4.3L Stroker kit, Supercharged, 8.5:1.
1
4.35%
Voters: 23. You may not vote on this poll

Poll: NA stroker or

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Old Apr 19, 2005 | 10:11 PM
  #1  
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4.3L NA stroker or 8.5 pistons w/FI?

I want to get an Idea of who's running what under the hood... I'm not looking to see who's car is faster, I'm just trying to get info on the most reliable power setup that will make a significant difference. Please feel free to reply with RWHP dyno numbers, and engine upgrade cost, etc. Please specify wether it's a DYI or a pro-install. I'm especially curious about the 4.3L NA stroker kit. Please specify miles since build.
 

Last edited by mike552; Apr 19, 2005 at 10:22 PM.
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Old Apr 19, 2005 | 10:51 PM
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Wow nothing!
 
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Old Apr 19, 2005 | 11:01 PM
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Yup, nothing.
 
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Old Apr 19, 2005 | 11:34 PM
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Wow, my bad, I voted for what I wanted....

4.3L Stroker kit, Twin-Turbo, 8.5:1.
 
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Old Apr 20, 2005 | 02:59 AM
  #5  
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I voted for 4.3L Stroker kit, Twin-Turbo, 8.5:1. But you can see the PRACTICAL decision I made in my sig.
 
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Old Apr 23, 2005 | 09:21 PM
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Given the cost of stroking a motor, I'd just forget about that idea altogether. A well built motor with a well matched turbo will make more power per dollar spent then stroker motor with or without FI.

I'd really consider the amount of power you are planning to make in this equation. For myself, I'd probably look at about 500HP so I'd probably opt to use 9.5 CR pistons and use reasonable boost levels from a turbo(s), so I can retain good off-boost response, power, and drivability.
 
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Old Apr 26, 2005 | 12:06 AM
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Given the cost of stroking a motor, I'd just forget about that idea altogether.
Why would you think that a "well built motor" with a "well matched turbo" will be more "power per dollar" than a Stroker kit with or without FI????
Please explain.

I'd really consider the amount of power you are planning to make in this equation.
I didn't put forth an equation, I'm asking people's opinions on reliable power setups that will make a significant difference.

For myself, I'd probably look at about 500HP so I'd probably opt to use 9.5 CR pistons and use reasonable boost levels from a turbo(s),
Why would you use 9.5CR pistons and not 8.5? I'm just curious as to what your reasoning is on this. Feel free to be technical.

so I can retain good off-boost response, power, and drivability.
Please elaborate, how would you "retain good off-boost response, power, and drivability"? Again, please feel free to be as technical as you like, how would you set-up wastegates, what A/R's would you use, how would your specs change between supercharger/single turbo/ twin-turbo? How much would you change your injector pressure? timing? etc....

You drive a 240SX with 5.5lbs boost, right? Did you ever raise the boost or are you still running 5.5?
 
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Old Apr 26, 2005 | 09:47 AM
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there is a 350z owner that went the stroker kit route, he says he's $50k into the motor alone already. Its not an economical route to go. Expect to spend $20k on the engine alone realistically
 
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Old Apr 26, 2005 | 10:32 AM
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Originally Posted by tony
there is a 350z owner that went the stroker kit route, he says he's $50k into the motor alone already. Its not an economical route to go. Expect to spend $20k on the engine alone realistically
I was just going to post the same thing. The stroker kit is over kill is you are shooting for less than 600rwhp. Here's the link.

http://www.my350z.com/forum/showthread.php?t=119184


I am going with SGP ulitmate short block with my greddy tt. It should be good for 500-530rwhp.
 
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Old Apr 26, 2005 | 10:49 AM
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Yeah, 20k to 50k is a lot of cash.
Scratch THAT idea. I'll look into this SGP short block. I am by no means trying to run 500rwhp, I'm just trying to figure out a way to build a reliable FI setup, is it as easy as throwing in 8.5 pistons and slapping on & tuning a turbo kit? Anyone here running this setup?
 
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Old Apr 26, 2005 | 10:56 AM
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This is what I am going with....look at my sig for the tt and extras. This would be a very reliable motor if you want less than 500rwhp. You will have to either send them your block or buy another one and send it to them. SGP does not have any blocks right now. If you go this route all you need to do is have a knowledgeable shop take out your block, ship it to SGP, and then have your shop install your TT kit on the motor while it is out and drop it in. The labor with tunning should be less than $2000 and that is on the high side. A good price would be $1400-$1700 for the install and another $300-$500 on tunning.

My motor is coming out today and should be at SGP by the end of the week

Ultimate short block: $3900

Block oil passages cleaned
Block redecked
Block Bored and Honed using a Torque Plate
Crank balanced
Crank journals polished
New Main and Rod bearings w/ceramic coating
Pauter Rods
ARP Rod Bolts
CP Pistons .020 over(8.5:1 or 11.5:1)
*Ceramic coating on Pistons
*ARP Main Studs
 
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Old Apr 26, 2005 | 10:59 AM
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Either way you are looking at least $15K for the motor, tt kit, labor/tunning. Add another $500-1200 for gauges.
 
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Old Apr 26, 2005 | 05:17 PM
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It looks as I will be doing this in steps. MY first step will be to locate a buildable short block and go from there. Gman2004, your setup sounds sweet, but not overkill. I think that's the route I'll end up going with. Thanks for the input.
 
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Old Apr 26, 2005 | 05:45 PM
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did sgp say how long it would take?
 
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Old Apr 26, 2005 | 09:24 PM
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This is the email Kyle sent me. Give call a call and tell from Jorge from Carnival sent you. Tel: (281) 444-9195

I do not have any short blocks in stock at the moment. I could get your block done in about 3-4 weeks after I receive it. The block will be good for 700 Rwhp but with the mods that you have now you will top out at about 475 Rwhp because of the injectors. The block will bolt right in to what you have now. The only thing you will need to do is get your Emanage retuned.

With 550cc injectors you will be good for about 500-600Rwhp. If you do head work and cams you should be able to get over 550Rwhp but if you do just the block you will be limited to about 500-525 Rwhp.

Kyle
 
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