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LSx FD RX7 Turbo System Frequently Asked Questions
Is this a full turbo kit?
No, we are currently only selling a hot part kit. We will offer a full version for mail order sales in the future, but there is no ETA as of 10/30/09. We stock all of the individual components, so we can help you assemble your own system. This includes turbos, wastegates, blow off valves, silicon couplers, clamps, flanges, and raw materials in aluminum and SS.
Will this work with my old LS1 style Hinson Subframe?
Yes. This will work with all versions of subframes produced by Hinson Motorsports.
Will this work with a subframe from another company?
Possibly. The system was designed to work with our parts, but it should work with most other versions. If there is an interference, it would most likely be resolved by a custom left side engine mount.
Will my Hinson fuel system be sufficient?
Larger fuel injectors will be required and a second fuel pump is suggested. We offer a great selection of fuel system parts at some of the lowest prices on the internet. Take a look at our fuel system pieces HERE. We will offer a conversion package for our fuel system to relocate the fuel pressure regulator under the hood.
What is methanol injection? Should I run it?
We have had a lot of success using methanol injection on our turbo installations. The systems turn on at a user determined boost level to add supplemental fuel supply. This additional fuel can be straight methanol or a water/methanol mix. The basic concept is for the additional fuel be a knock suppressant allowing you to run more turbo pressure (boost). More information on methanol injection is available HERE. These systems are simple to install, but they should be tuned by a professional.
What about tuning? Can Hinson Motorsports help me set up my computer?
We strongly recommend that every turbo LSx owner purchase HP Tuners and a wideband sensor. We are one of the largest stocking dealers of HP Tuners and popular wideband O2 sensors. We will be able to assist our HP Tuners customers through the mail, but we do not recommend mail order tunes for turbo installs. No two turbo & engine systems are the same, so they should not be treated that way.
We operate a Dynocom DC 3000x dyno capable of controlling over 2,500+. We test our street and racecars on this dyno regularly. Come see us for a professional tune that you can rely on.
Will this system work with my custom cooling system?
This system works with the single fan FD cooling system from Hinson Motorsports. The cooling system will have to be moved forward. We have a new upper shroud bent to match the new mounting angle. If you have our twin fan version, the shroud can be removed allowing you install a single fan. These fans are available from HERE. The fan will have to be mounted as a pusher.
If your custom cooling system is not similar in design to ours, odds are that it will not clear the turbo or provide adequate air space between the turbo and radiator.
Will the car run warm with the turbo system?
We have some brutal high heat during the summers in the southeast USA. Our test cars with large air to air intercoolers have seen temperatures creep up in stop and go traffic on the hottest summer days (99deg+). In every case, the engine cooling system has been sufficient to recover once the car was back in motion.
We recommend a water to air intercooler for high horsepower (750HP+) to avoid blocking airflow to the radiator. If you want to run an air to air intercooler, it is important to install it in a fashion so that the radiator gets the proper amount of airflow. Hinson Motorsports carrys the full line of SPEARCO and BELL intercooler cores. Custom intercoolers are available and will be built to your drawing. Call for pricing.
We have had a lot of success using Evans NPG Coolant in high horsepower and high heat applications. For more information, visit this section of our HERE and www.evanscooling.com.
How big of a turbo should I buy?
This is the most common question that we receive. While there is no chart for every application, you can use the following guide to help make a decision. We will assist you with this choice when you're ready to make a purchase.
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Turbo Size |
Engine Size |
Flywheel HP |
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62-66mm Turbo |
Stock 5.3 or 5.7L |
Up to 650 HP |
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70mm Turbo |
Stock 5.7 to 6.2 L |
Up to 800 HP |
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76-78mm Turbo |
Stock 7L or Any Forged Internal LSx Engine |
Up to 1,050 HP |
Within each turbo size, we can adjust the "responsiveness" of the turbo by changing the AR. What is the AR of a turbo? Visit this link for more information.
Give us a call to discuss the proper turbo size to match your performance goals when you're ready to move forward.
Do I need a ball bearing turbo?
Ball bearing turbos offer a faster response. Tests have shown the reaction to be up to 25% quicker than a standard bearing. However, a V8 engine with a standard bearing single turbo already offers a great level of responsiveness. Our recommendation is to go with the ball bearing turbo if you are building a max effort setup. If it is going on a street car, apply the cost savings to another part of the project.
What about boost control?
While we can supply you with any size wastegate spring, these systems are being packaged with a seven pound spring. Most stock LSx V8 applications will run a long time between 6-9psi of boost. If you wish to run more boost, we will be offering a manual boost controller package specific to this application. Aftermarket boost controllers will work as well, but we recommend that the installation be kept as simple as possible for the inital testing.
How much clearance is between the turbo and balancer?
There is plenty of room for a T4 Turbo.
We will add more information to this as questions are asked. If you didn't find your answer here, please call or email us for additional help. Thank you.
We're available M-Thursday 9-5:30 and Friday from 9-5pm. 205-267-6387
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