I want to BULLETPROOF my engine
Thread Starter
Joined: May 2010
Posts: 30
From: Detroit
I want to BULLETPROOF my engine
Alright guys, as my name suggests, you should remember to SPEAK SLOWLY, just pretend you're talking to a fifth grader when responding to my posts. I hope my lack of knowledge won't keep people from giving me their opinions or advice.
I just purchased a 96 Cobra. It is ESSENTIALLY stock. I would like to add a turbo charger to the car, but I am concerned with the additional stress this would add to the motor. (83K miles) The car currently has a 110 shot of nos. What is the first step in preparing this motor for the added power of a blower? Or is my logic incorrect? Are these cars already built by SVT to handle NOS and a blower.
My final goal is to have the car as built as it can possibly be, while maintaining streetability.
I just purchased a 96 Cobra. It is ESSENTIALLY stock. I would like to add a turbo charger to the car, but I am concerned with the additional stress this would add to the motor. (83K miles) The car currently has a 110 shot of nos. What is the first step in preparing this motor for the added power of a blower? Or is my logic incorrect? Are these cars already built by SVT to handle NOS and a blower.
My final goal is to have the car as built as it can possibly be, while maintaining streetability.
5th Gear Member
Joined: Nov 2007
Posts: 4,955
From: Maryland
Alright guys, as my name suggests, you should remember to SPEAK SLOWLY, just pretend you're talking to a fifth grader when responding to my posts. I hope my lack of knowledge won't keep people from giving me their opinions or advice.
I just purchased a 96 Cobra. It is ESSENTIALLY stock. I would like to add a turbo charger to the car, but I am concerned with the additional stress this would add to the motor. (83K miles) The car currently has a 110 shot of nos. What is the first step in preparing this motor for the added power of a blower? Or is my logic incorrect? Are these cars already built by SVT to handle NOS and a blower.
My final goal is to have the car as built as it can possibly be, while maintaining streetability.
I just purchased a 96 Cobra. It is ESSENTIALLY stock. I would like to add a turbo charger to the car, but I am concerned with the additional stress this would add to the motor. (83K miles) The car currently has a 110 shot of nos. What is the first step in preparing this motor for the added power of a blower? Or is my logic incorrect? Are these cars already built by SVT to handle NOS and a blower.
My final goal is to have the car as built as it can possibly be, while maintaining streetability.
Second, you need a goal, how fast do you want to go how much power do you want.
The factory rotating assembly (Everything in the block pistons rods crank) is good till about 400wheel horsepower with a good tune. The rods will be the first to break, the pistons second. The Crank is actually VERY strong and im willing to bet you will never break it as there are cars making over 1000hp on cobra cranks, same goes for your block.
Now chosing pistons and rods, again you need to find a powerlevel you are shooting for. Most companies make rod and piston combos for different powerlevels, the stronger the rod the more expensive they will be, same goes for pistons. Whatever you go with you will need some sort of forged pistons and rods while looking at the item online it should have a power rating somewhere on that page along with a weight in grams CC etc etc.
The CC of a piston along with your heads determine your compression ratio, With an f/i(forced induction, refers to any kind of power adder such as a turbo or supercharger.) set-up you want a compression of NO HIGHER than 9.0:1. I would look at 12-18cc pistons, they should put you in the range you need to be in for boost.(consult the seller for exact compression ratio if it is not listed, specify through 4 valve heads).
Back to picking one.
You CAN run nitrous and boost but really there isn't much of a point, you could just throw a bigger turbo on or go with a smaller pulley to make more boost (in the case of a supercharger). I think the only way nitrous with forced induction isn't pointless is either;
a. when you are making RIDUCLOUS power, well over 1000, or b. when you are using an eaton style supercharger found on 2003/2004 cobras, the reason for this is they loose efficency up around 17lbs of boost due to excessive heat and nitrous if i recall correctly cools things down. However an eaton supercharger would not be an ideal supercharger for your car due to heatsoak issues. (Losing power when overheated = heatsoak.) I would suggest either, a vortech, novi, or procharger type supercharger known as centrifugal superchargers due to their circular/turbo like shape. These work a lot like turbos except they are driven off of the cars crank as opposed to air. That or go with a turbo set-up.
5th Gear Member
Joined: Nov 2007
Posts: 4,955
From: Maryland
Yes, but he has a B headed car, IIRC they do not make an intercooled setup for twinscrew B-heads, i could be wrong.
Banned
Joined: Aug 2007
Posts: 2,463
From: AZ
Banned
Joined: Aug 2007
Posts: 2,463
From: AZ
Thread Starter
Joined: May 2010
Posts: 30
From: Detroit
First of all i would pick one, boost or nitrous. Boost refers to Superchargers or Turbos.
Second, you need a goal, how fast do you want to go how much power do you want.
The factory rotating assembly (Everything in the block pistons rods crank) is good till about 400wheel horsepower with a good tune. The rods will be the first to break, the pistons second. The Crank is actually VERY strong and im willing to bet you will never break it as there are cars making over 1000hp on cobra cranks, same goes for your block.
Now chosing pistons and rods, again you need to find a powerlevel you are shooting for. Most companies make rod and piston combos for different powerlevels, the stronger the rod the more expensive they will be, same goes for pistons. Whatever you go with you will need some sort of forged pistons and rods while looking at the item online it should have a power rating somewhere on that page along with a weight in grams CC etc etc.
The CC of a piston along with your heads determine your compression ratio, With an f/i(forced induction, refers to any kind of power adder such as a turbo or supercharger.) set-up you want a compression of NO HIGHER than 9.0:1. I would look at 12-18cc pistons, they should put you in the range you need to be in for boost.(consult the seller for exact compression ratio if it is not listed, specify through 4 valve heads).
Back to picking one.
You CAN run nitrous and boost but really there isn't much of a point, you could just throw a bigger turbo on or go with a smaller pulley to make more boost (in the case of a supercharger). I think the only way nitrous with forced induction isn't pointless is either;
a. when you are making RIDUCLOUS power, well over 1000, or b. when you are using an eaton style supercharger found on 2003/2004 cobras, the reason for this is they loose efficency up around 17lbs of boost due to excessive heat and nitrous if i recall correctly cools things down. However an eaton supercharger would not be an ideal supercharger for your car due to heatsoak issues. (Losing power when overheated = heatsoak.) I would suggest either, a vortech, novi, or procharger type supercharger known as centrifugal superchargers due to their circular/turbo like shape. These work a lot like turbos except they are driven off of the cars crank as opposed to air. That or go with a turbo set-up.
Second, you need a goal, how fast do you want to go how much power do you want.
The factory rotating assembly (Everything in the block pistons rods crank) is good till about 400wheel horsepower with a good tune. The rods will be the first to break, the pistons second. The Crank is actually VERY strong and im willing to bet you will never break it as there are cars making over 1000hp on cobra cranks, same goes for your block.
Now chosing pistons and rods, again you need to find a powerlevel you are shooting for. Most companies make rod and piston combos for different powerlevels, the stronger the rod the more expensive they will be, same goes for pistons. Whatever you go with you will need some sort of forged pistons and rods while looking at the item online it should have a power rating somewhere on that page along with a weight in grams CC etc etc.
The CC of a piston along with your heads determine your compression ratio, With an f/i(forced induction, refers to any kind of power adder such as a turbo or supercharger.) set-up you want a compression of NO HIGHER than 9.0:1. I would look at 12-18cc pistons, they should put you in the range you need to be in for boost.(consult the seller for exact compression ratio if it is not listed, specify through 4 valve heads).
Back to picking one.
You CAN run nitrous and boost but really there isn't much of a point, you could just throw a bigger turbo on or go with a smaller pulley to make more boost (in the case of a supercharger). I think the only way nitrous with forced induction isn't pointless is either;
a. when you are making RIDUCLOUS power, well over 1000, or b. when you are using an eaton style supercharger found on 2003/2004 cobras, the reason for this is they loose efficency up around 17lbs of boost due to excessive heat and nitrous if i recall correctly cools things down. However an eaton supercharger would not be an ideal supercharger for your car due to heatsoak issues. (Losing power when overheated = heatsoak.) I would suggest either, a vortech, novi, or procharger type supercharger known as centrifugal superchargers due to their circular/turbo like shape. These work a lot like turbos except they are driven off of the cars crank as opposed to air. That or go with a turbo set-up.
Wow man, thanks so much for taking the time to bring all this down to my level. I really appreciate the help.
MY MOST IMPORTANT QUESTION IS THIS: Let's say I have a couple grand lying around since I got such a good deal on my car. Once I upgrade the pistons and rods, could I SAFELY add some sort of twin turbo setup?? How much HP could adding a turbo alone yield?
You say in the post that using NOS with a turbo is essentially pointless unless
a) I make ridiculous power over 1000hp (this won't happen) I would actually like to be around 600 HP some day. I just want to blow the doors off just about ANY chevy that dares stop at a light next to me.
b)Unless I use an Eaton style supercharger.
Is Eaton a twin screw?? Because MFJ replies to your post and starts talking about twin screws....
I enjoy reading your responses guys I'm pretty mechanically minded and I learn fast, so hopefully at some point before I die, I will be able to translate all this language.
A few more questions.
What are you referring to when you call my car a B head?
MFJ--When you refer to a "radical turbo setup" are you saying that you would make a "custom" setup because they don't make an intercooled system for twinscrew turbo on B headed cars?
I ask because "custom" might not mean much to you guys, but I can't do this work on my own, so I'll be paying someone. I'm not broke, but I don't want to spend money that's not needed. Remember 600hp is my goal.
Last edited by Idiot; May 29, 2010 at 07:46 AM.