**How to do twins right the first time....2007**
**How to do twins right the first time....2007**
Going Deep's original sticky about how to safely do twin turbos on the 350Z was great...for it's time. Now it's 2007, and it's MUCH MUCH easier to build up a safe twin turbo setup these days 
. Having gone through all of this before, this is how I recommend you go about it now:
Step 1: Build your engine. No more spending time locating bare blocks and new cranks and whatnot. No need to source out your own pistons and rods. These days, all of the big engine builders around here (GTM, BuiltZMotors, SGP, IPP, ect...) pretty much will always have usable cores laying around, if not completely built engines.
Step 2: What is your long term hp goal? Take some time and decide how much whp you will ULTIMATELY want out of your engine; in the long run. Don't cheap out here and only get what will get you by for now, knowing that you will eventually upgrade with more parts later. "I'll just build the shortblock for now, then later go back and sleeve it and do headwork..." If you have money to blow, fine, but most don't. Rebuilding later down the road is just double the labor to R&R your engine, rebuild it with all new parts, and R&R your turbo kit.
Step 3: Decide which FI kit is right for you. Now that you've decided what your LONG TERM hp goal will be, it's time to start researching the many FI kits that have come along over the years. There's alot to choose from, all with there own pro's and con's. The big thing these days is deciding if you want twin or single turbos. Spend a few days researching each and every kit that interests you. PM members who have that particular kit and pick their brain about it (people used to PM me all the time and still do, asking various questions, and I'm more than happy to help them out, as I'm sure most of the seasoned members would as well).
Step 4: Fuel system. Whether you want 400whp or 800whp, you'll need the fuel to get you to that level, reliably. Some kits such as the APS single and twin kits, come with their own fuel system that is fine up to about 450whp. If that fits within your hp goal, you're set. If not, you'll need to research the big fuel systems out there. AAM Stage I and II, CJM Stage I, II, and soon to come Stage III. Don't forget injectors; go with whatever your trusted tuner recommends. Also, the type of injectors will you run will depend on what engine management you decide to go with (more on that later).
Step 5: Exhaust. You will need to expel your spent exhaust gasses as quickly as possible, to avoid added back pressure and heat to your engine. Gone are the days of being forced to run Borla TD and Greddy EVO II exhausts with your twin turbo kit. Alot or really nice exhausts, designed specifically for FI, have come out in the last year and a half. AAM, APS, GReddy, SFR, and SVR have all come out with great, quality FI exhausts designed for the 350Z/G35. It all pretty much boils down to personal taste when it comes to an FI exhaust, IMO. Do some research and find out which ones drone on the highway, which ones don't, single or dual exit, etc....
Step 6: Engine management. This is the last (but one of the most important) step. Your car will only run as safe and as smooth as its tune. All of the best parts available will still fail with a bad tune or a cheesy EMS solution. There a few really good EMS's out there now, with more just over the horizon. I'm not really going to get too much into them much here. You will want to discuss with your tuner what EMS will get you to your ultimate goal and still fit your budget, and let them decide what's the best for you.
. Having gone through all of this before, this is how I recommend you go about it now:Step 1: Build your engine. No more spending time locating bare blocks and new cranks and whatnot. No need to source out your own pistons and rods. These days, all of the big engine builders around here (GTM, BuiltZMotors, SGP, IPP, ect...) pretty much will always have usable cores laying around, if not completely built engines.
Step 2: What is your long term hp goal? Take some time and decide how much whp you will ULTIMATELY want out of your engine; in the long run. Don't cheap out here and only get what will get you by for now, knowing that you will eventually upgrade with more parts later. "I'll just build the shortblock for now, then later go back and sleeve it and do headwork..." If you have money to blow, fine, but most don't. Rebuilding later down the road is just double the labor to R&R your engine, rebuild it with all new parts, and R&R your turbo kit.
Step 3: Decide which FI kit is right for you. Now that you've decided what your LONG TERM hp goal will be, it's time to start researching the many FI kits that have come along over the years. There's alot to choose from, all with there own pro's and con's. The big thing these days is deciding if you want twin or single turbos. Spend a few days researching each and every kit that interests you. PM members who have that particular kit and pick their brain about it (people used to PM me all the time and still do, asking various questions, and I'm more than happy to help them out, as I'm sure most of the seasoned members would as well).
Step 4: Fuel system. Whether you want 400whp or 800whp, you'll need the fuel to get you to that level, reliably. Some kits such as the APS single and twin kits, come with their own fuel system that is fine up to about 450whp. If that fits within your hp goal, you're set. If not, you'll need to research the big fuel systems out there. AAM Stage I and II, CJM Stage I, II, and soon to come Stage III. Don't forget injectors; go with whatever your trusted tuner recommends. Also, the type of injectors will you run will depend on what engine management you decide to go with (more on that later).
Step 5: Exhaust. You will need to expel your spent exhaust gasses as quickly as possible, to avoid added back pressure and heat to your engine. Gone are the days of being forced to run Borla TD and Greddy EVO II exhausts with your twin turbo kit. Alot or really nice exhausts, designed specifically for FI, have come out in the last year and a half. AAM, APS, GReddy, SFR, and SVR have all come out with great, quality FI exhausts designed for the 350Z/G35. It all pretty much boils down to personal taste when it comes to an FI exhaust, IMO. Do some research and find out which ones drone on the highway, which ones don't, single or dual exit, etc....
Step 6: Engine management. This is the last (but one of the most important) step. Your car will only run as safe and as smooth as its tune. All of the best parts available will still fail with a bad tune or a cheesy EMS solution. There a few really good EMS's out there now, with more just over the horizon. I'm not really going to get too much into them much here. You will want to discuss with your tuner what EMS will get you to your ultimate goal and still fit your budget, and let them decide what's the best for you.
Originally Posted by IIQuickSilverII
I would take your step 1 out of the equation. Unless we talkign about 430+whp as a goal Only
Basically, it's the way to go about it if money weren't a factor, and ultimate reliability was the goal.
I appreciate the time needed to write that. Very good, as going FI isn't as simple as "throwing on a turbo and a tune". Many factors come into play, and it does no harm waiting another month to research, as opposed to throwing on your kit, then coming to the realization that it A) wasn't what you pictured, or B) blowing your motor, and having unexpected downtime.
Do you think that guages should be added somewhere to the write-up? Another thing that I've been doing that has helped me (subjective, of course) is to call the shops that you have in mind to do your build, so you can see their work first-hand, as well as ask additional questions you may not have thought of over the phone.
Do you think that guages should be added somewhere to the write-up? Another thing that I've been doing that has helped me (subjective, of course) is to call the shops that you have in mind to do your build, so you can see their work first-hand, as well as ask additional questions you may not have thought of over the phone.
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Originally Posted by usingthejohn
I appreciate the time needed to write that. Very good, as going FI isn't as simple as "throwing on a turbo and a tune". Many factors come into play, and it does no harm waiting another month to research, as opposed to throwing on your kit, then coming to the realization that it A) wasn't what you pictured, or B) blowing your motor, and having unexpected downtime.
Do you think that guages should be added somewhere to the write-up? Another thing that I've been doing that has helped me (subjective, of course) is to call the shops that you have in mind to do your build, so you can see their work first-hand, as well as ask additional questions you may not have thought of over the phone.
Do you think that guages should be added somewhere to the write-up? Another thing that I've been doing that has helped me (subjective, of course) is to call the shops that you have in mind to do your build, so you can see their work first-hand, as well as ask additional questions you may not have thought of over the phone.
Thank you.
There's a hundred little steps I left out that would be answered in the course of research. I just threw out the biggest, most important steps that I could think of off the top of my head. Plus I was a little bored
Basically what I suggested, is just the meat and potato's of a good, solid FI setup.
Of course, you'll need little things like gauges, a clutch rated to hold the power you need, wider wheels and tires, etc...
Last edited by failsafe306; Jul 8, 2007 at 12:11 PM.
Originally Posted by failsafe306
Thank you.
There's a hundred little steps I left out that would be answered in the course of research. I just threw out the biggest, most important steps that I could think of off the top of my head. Plus I was a little bored
Basically what I suggested, is just the meat and potato's of a good, solid FI setup.
There's a hundred little steps I left out that would be answered in the course of research. I just threw out the biggest, most important steps that I could think of off the top of my head. Plus I was a little bored
Basically what I suggested, is just the meat and potato's of a good, solid FI setup.
Well, thanks again. I hope to see more people utilizing this forum; very informative when dealing with FI questions.John
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Originally Posted by I1DER
Great write up.
When I first read the thread title right way to do twins under "new posts", I thought that maybe it was in the Anything Goes forum.
My mind is wandering today.
When I first read the thread title right way to do twins under "new posts", I thought that maybe it was in the Anything Goes forum.
My mind is wandering today.
This is a great post!!!! I am planning on doing a Vortech S/C in a few months and I would love a write-up similar to this one. I'm somewhat clueless and if anyone could point me in the right direction that would be awesome. I'm looking for around 375rwhp/350rwtq. Not trying to thread jack, but I would love the help!!!
Originally Posted by CTU-Z
This is a great post!!!! I am planning on doing a Vortech S/C in a few months and I would love a write-up similar to this one. I'm somewhat clueless and if anyone could point me in the right direction that would be awesome. I'm looking for around 375rwhp/350rwtq. Not trying to thread jack, but I would love the help!!!
Are injectors necessary at that power level? Say if I was to use the 3.12 pulley on the Vortech? Also, what do you think about a self install of an S/C kit and then taking it to a tuner? My uncle owns a shop and is willing to help me install the S/C kit, but he does not have the stuff to do a proper tune.
Originally Posted by CTU-Z
Are injectors necessary at that power level? Say if I was to use the 3.12 pulley on the Vortech? Also, what do you think about a self install of an S/C kit and then taking it to a tuner? My uncle owns a shop and is willing to help me install the S/C kit, but he does not have the stuff to do a proper tune.
Hey CTU-Z check this thread out
https://my350z.com/forum/forced-induction/270770-vortech-faq-read-this-before-asking-vortech-questions.html
Sentry does a great write-up of what all you should need and have to do. Are you a 6 MT or 5 AT?
https://my350z.com/forum/forced-induction/270770-vortech-faq-read-this-before-asking-vortech-questions.html
Sentry does a great write-up of what all you should need and have to do. Are you a 6 MT or 5 AT?