350z forged internal questions.
05-03-2017, 10:54 AM
#1
New Member
Thread Starter
350z forged internal questions.
hi guys im pretty new to the 350z and car scene and have a couple questions. i personally want to eventually build my 350z in the long run and know that things such as adding turbos will eventually wear the engine. the topic i am confused about is about adding forged internals to the engine. what are the pro's and con's? do they add a higher mileage life value than regular internals. and will i have more issues or frequent mechanic stops with them? theres a lot more i want but i feel like i would talk forever so just spill as much info you guys have. thanks 
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Daflamez (05-16-2017)
05-03-2017, 02:12 PM
#4
The factory VQ35DE already comes with some forged internals, which is why many people have had great success with lower boost (8lbs-ish) Supercharger kits and some turbo kits. In a lower boost scenario the engines will typically last quite a while if you're not hammering on it constantly and making sure to keep up with maintenance. If you want to go crazy on the boost, then you need to lower the compression ratio. The stock ratio I believe is 11:1. It's at this point that you will want to replace the factory internals with new forged components and probably upgrade the heads (new cams, valve springs).
There's a whole lot more to this though. Forged internals is just one aspect of building up your engine. If you want to go FI, then you need to look into other aspects of the vehicle if you want a safe/reliable experience. Cooling is going to be important along with drivetrain components, fuel delivery, and engine management (tuning).
If you want it done right, it's not as simple as just bolting on some kit. Be prepared for a laundry list of expenses. The best advice I can give you is to start researching anything and everything related to what you want to do. The 350Z has been around for a long time now and most of these topics have been beaten to death across the various Z forums.
Good Luck!
-Icer
There's a whole lot more to this though. Forged internals is just one aspect of building up your engine. If you want to go FI, then you need to look into other aspects of the vehicle if you want a safe/reliable experience. Cooling is going to be important along with drivetrain components, fuel delivery, and engine management (tuning).
If you want it done right, it's not as simple as just bolting on some kit. Be prepared for a laundry list of expenses. The best advice I can give you is to start researching anything and everything related to what you want to do. The 350Z has been around for a long time now and most of these topics have been beaten to death across the various Z forums.
Good Luck!
-Icer
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Daflamez (05-16-2017)
05-03-2017, 03:09 PM
#5
This forum is a wealth of knowledge. I suggest reading through the Forced Induction subforum 2-3 times and then going back and doing it many more times for a few months/years. All of your answers are there.
To answer your question bluntly, factory internals will not support high horsepower. "Forged internals" will allow you to have more power without breaking things.
To answer your question bluntly, factory internals will not support high horsepower. "Forged internals" will allow you to have more power without breaking things.
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Daflamez (05-16-2017)
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Daflamez (05-16-2017)
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05-16-2017, 05:20 PM
#10
New Member
The factory crank is good to go, no need to replace. The oem connecting rods are the weak link in the motor. Most folks replace with forged rods and pistons. No need to upgrade heads or cams either unless you're planning on really high hp. The best deal is just buying a new short block. There are several companies out there selling short blocks, Z1 and import parts pro have them listed on their websites.
05-24-2017, 10:22 AM
#11
Registered User
Besides what everyone said I'll throw this out there to make it simple
Stock block with age probably isn't to dependable past 400 whp
Forged Short Block $3,000 minimum to hold like 650 rwhp
SC kit $3500 minimum give or take
Turbo more than SC, most likely double the price
Now depending on what you have planned after you spend $7k on the block and kit not counting tuning, exhaust,better tires, differential. Forged internals are for people who really do plan to spend 25k overall on the car. It's a commitment and I would only do it if you plan to keep the car for a really long time. I went the full modification route on a 03 Mustang GT I bought new when I was 20. I planned to keep it and I did for 11 years. So sleep on it
Stock block with age probably isn't to dependable past 400 whp
Forged Short Block $3,000 minimum to hold like 650 rwhp
SC kit $3500 minimum give or take
Turbo more than SC, most likely double the price
Now depending on what you have planned after you spend $7k on the block and kit not counting tuning, exhaust,better tires, differential. Forged internals are for people who really do plan to spend 25k overall on the car. It's a commitment and I would only do it if you plan to keep the car for a really long time. I went the full modification route on a 03 Mustang GT I bought new when I was 20. I planned to keep it and I did for 11 years. So sleep on it
