SCRunner12
New member
I'm creating this thread to consolidate a lot of the information that is floating around about the 3.4l superchargers. I will continually add to this thread as I find more info, but will start it off with [MENTION=44220]BigFishAllDay[/MENTION]'s amazing post that started in [MENTION=63060]rickashay[/MENTION]'s build thread. I have recently acquired a supercharger with no mounting hardware and will update the thread to include where I found some of the harder items on this list.
Please feel free to post up links/info you feel are important and I will add them the original post.
I borrowed these photo's from [MENTION=68348]brian_d[/MENTION]'s thread. They are a good example of pretty much all the parts you need and especially the harder to find ones.
Thanks to [MENTION=57546]4-Ripcord[/MENTION] for his write up in the http://www.toyota-4runner.org/3rd-gen-t4rs/82033-3rd-gen-4runner-buyers-guide.html#post706266.
TRD Supercharger:
One highly sought after option for these trucks is the TRD Supercharger!
There are 2 different versions of the TRD supercharger for the 3.4L V6.
-It is important to note that this was a dealer option, meaning that you could not order a 4runner from the factory with the TRD supercharger in any option package. You just had to buy one after you got the 4runner and the dealer installed it.
Both the 1st and 2nd gen superchargers are M62 superchargers made by Magnuson and produce the exact same power increases. The only differences between them are appearances and ease of maintenance. The first page I would recommend you read is this one: TRD Supercharger Here, gadget (who is a pioneer of TRD superchargers and performance modifications) explains what superchargers are, how they work, and the differences between the 2 generations.
The 1st Generation TRD supercharger.
Courtesy of Gadget .
The 2nd (aka 4th) Generation TRD supercharger.
Courtesy of Gadget .
Basic specs:
Gains with only supercharger (no fuel mods)
Courtesy of Ultimate Yota.
---------
Known Issues:
There are a few documented issues with the superchargers. Most of which arise due to lack of supporting fuel mods.
An in-depth list can be found here: UltimateYota.com
Things such as high gear/low rpms pinging, high rpm lean out, automatic transmission wear.
These symptoms are cured with URD's 7th injector kit. It helps to supply extra fuel when needed when the stock system cannot keep up with how much air is being pumped in. The tuning computer and two-step cooler spark plugs included with the kit helps by ret@rding timing more than the stock computer is capable of doing. This kit also adds top end power becuase it helps to meet this needs.
Underdog Racing Development
If you do not feel a need for this extra injector and tuning computer, at least get two-step cooler spark plugs to help with proper timing.
Denso Iridium IK22 are the ones you want.
-------------------
Issues that are not covered there are as follows:
Belt slippage
There are two types of Tensioners that come with the TRD superchargers, they are interchangeable. with the old-style static tensioner you can experience belt slippage when you really step on the pedal.
-The Static tensioner is just a plate with a pulley on it, you manage the belt tension with the alternator tensioner bolt.
-The Dynamic tensioner is a spring loaded arm with a pulley on it that takes care of the belt tension itself.
The dynamic tensioner can by found for around $280, the part number is: PTR29-60032.
---
Supercharger wear
The bearings in the nose cone of the supercharger are only rated to last about 100k miles. This is one area where the 2nd gen supercharger really shows its advantages.
-The 1st gen unit must be taken off and either sent in to Magnuson to be rebuilt (usually $500+) or rebuilt at home if you have the right tools. DIY rebuilds can be done for around $200 with a lot of elbow grease.
Here is a detailed thread of a full rebuild of a first gen unit by Chris360hawks: http://www.toyota-4runner.org/3rd-g...-top-eaton-m62-complete-rebuild-write-up.html
Here is a thread where member Coinball rebuilt his 1st gen unit: http://www.toyota-4runner.org/3rd-gen-t4rs/119634-project-put-blower-my-hoopty-go.html
-The 2nd (4th) gen unit can be rebuilt in your garage while its still on the vehicle. To do so you need the TRD Nose cone kit (PN: PTR29-35042) it comes with a new nose cone with the bearing already pressed in and a bottle of new supercharger oil and some gasket sealant.
Here is a thread that really shows how that is done: 3.4 Supercharger Nose-Drive Replacement - CustomTacos.com Forum
-------
Broken Bypass valves
The bypass valves on the 2nd gen units are known to fail and/or break the rivets off. Also the rubber inside them can dryout and crack which leads to boost leakage.
Replacements are under $100.
Available through LCE performance: Supercharger Accessories - 5VZ TRD Bypass Valve
============================================================
Supercharger Performance upgrades
Smaller Pulley
URD sells an assortment of smaller sized pullies. It is recommended that you have sufficient fuel modifications to support the increased amount of air being pumped in by smaller pullies. Underdog Racing Development
-Stock is 2.37" and the truck runs at about 7 psi
-URD 2.2" increases max boost by 1.5-2 psi over stock. This is the most common pulley to add.
-URD 2.1" increases max boost by 3.5-4 psi over stock. Tuning is highly recommended with a pulley this small.
*Note that the supercharger is known to handle about 15 max, so be careful.
-----
Methanol Injection:
Some users choose to add methanol injection instead of or in addition to extra fuel injectors. Methanol injection changes the A/F ratio at high throttle to increase power.
Here is the main thread Methanol users go to start out:
Texas_Ace's Cheap DIY Meth/Water Injection kit Writeup! Get 10hp+ for under $150! - YotaTech Forums
Pros:
-inexpensive
-Fairly simple to install
Cons:
-Have to refill methanol tank occasionally
-In-Depth Tuning is pretty much required
-----
Cooler thermostat
The stock thermostat is rated at 180* F and keeps the engine around 193-195*. However, The stock thermostat is known to be unable to keep the engine in the optimum range of temperatures with a supercharger. With a supercharger, you will notice temps above 200* very often.
Stant 14077 is a 170* thermostat and will maintain a cool engine despite whatever high performance runs you are doing on the supercharger. With a supercharger, expect to see temps of 185-190*
The TRD thermostat is a 160* and many people recommend running this ONLY if you do a very accurate tune and are trying for maximum performance. Be cautious with this one. You will often see the engine running around 175-180*.
-------
Performance Headers
headers are the manifolds that handle the exhaust gasses from the engine. The stock headers are not known to be very efficient. Performance headers can increase power by approximately 10-15hp.
Brands of performance headers for these vehicles are:
-TRD
-Doug Thorley
-OBX
-----
High Flow Exhaust
Any high flow muffler is a good idea to match the increased volume of air going through the engine. It is also beneficial to add a high flow Catalytic converter, although doing this will trigger an O2 sensor code. So if you decide on a high flow CAT, also look into the URD rear O2 sim kit. It will prevent the code.
Underdog Racing Development
Please feel free to post up links/info you feel are important and I will add them the original post.
I borrowed these photo's from [MENTION=68348]brian_d[/MENTION]'s thread. They are a good example of pretty much all the parts you need and especially the harder to find ones.
Thanks to [MENTION=57546]4-Ripcord[/MENTION] for his write up in the http://www.toyota-4runner.org/3rd-gen-t4rs/82033-3rd-gen-4runner-buyers-guide.html#post706266.
TRD Supercharger:
One highly sought after option for these trucks is the TRD Supercharger!
There are 2 different versions of the TRD supercharger for the 3.4L V6.
-It is important to note that this was a dealer option, meaning that you could not order a 4runner from the factory with the TRD supercharger in any option package. You just had to buy one after you got the 4runner and the dealer installed it.
Both the 1st and 2nd gen superchargers are M62 superchargers made by Magnuson and produce the exact same power increases. The only differences between them are appearances and ease of maintenance. The first page I would recommend you read is this one: TRD Supercharger Here, gadget (who is a pioneer of TRD superchargers and performance modifications) explains what superchargers are, how they work, and the differences between the 2 generations.
The 1st Generation TRD supercharger.
Courtesy of Gadget .
The 2nd (aka 4th) Generation TRD supercharger.
Courtesy of Gadget .
Basic specs:
Gains with only supercharger (no fuel mods)
Courtesy of Ultimate Yota.
---------
Known Issues:
There are a few documented issues with the superchargers. Most of which arise due to lack of supporting fuel mods.
An in-depth list can be found here: UltimateYota.com
Things such as high gear/low rpms pinging, high rpm lean out, automatic transmission wear.
These symptoms are cured with URD's 7th injector kit. It helps to supply extra fuel when needed when the stock system cannot keep up with how much air is being pumped in. The tuning computer and two-step cooler spark plugs included with the kit helps by ret@rding timing more than the stock computer is capable of doing. This kit also adds top end power becuase it helps to meet this needs.
Underdog Racing Development
If you do not feel a need for this extra injector and tuning computer, at least get two-step cooler spark plugs to help with proper timing.
Denso Iridium IK22 are the ones you want.
-------------------
Issues that are not covered there are as follows:
Belt slippage
There are two types of Tensioners that come with the TRD superchargers, they are interchangeable. with the old-style static tensioner you can experience belt slippage when you really step on the pedal.
-The Static tensioner is just a plate with a pulley on it, you manage the belt tension with the alternator tensioner bolt.
-The Dynamic tensioner is a spring loaded arm with a pulley on it that takes care of the belt tension itself.
The dynamic tensioner can by found for around $280, the part number is: PTR29-60032.
---
Supercharger wear
The bearings in the nose cone of the supercharger are only rated to last about 100k miles. This is one area where the 2nd gen supercharger really shows its advantages.
-The 1st gen unit must be taken off and either sent in to Magnuson to be rebuilt (usually $500+) or rebuilt at home if you have the right tools. DIY rebuilds can be done for around $200 with a lot of elbow grease.
Here is a detailed thread of a full rebuild of a first gen unit by Chris360hawks: http://www.toyota-4runner.org/3rd-g...-top-eaton-m62-complete-rebuild-write-up.html
Here is a thread where member Coinball rebuilt his 1st gen unit: http://www.toyota-4runner.org/3rd-gen-t4rs/119634-project-put-blower-my-hoopty-go.html
-The 2nd (4th) gen unit can be rebuilt in your garage while its still on the vehicle. To do so you need the TRD Nose cone kit (PN: PTR29-35042) it comes with a new nose cone with the bearing already pressed in and a bottle of new supercharger oil and some gasket sealant.
Here is a thread that really shows how that is done: 3.4 Supercharger Nose-Drive Replacement - CustomTacos.com Forum
-------
Broken Bypass valves
The bypass valves on the 2nd gen units are known to fail and/or break the rivets off. Also the rubber inside them can dryout and crack which leads to boost leakage.
Replacements are under $100.
Available through LCE performance: Supercharger Accessories - 5VZ TRD Bypass Valve
============================================================
Supercharger Performance upgrades
Smaller Pulley
URD sells an assortment of smaller sized pullies. It is recommended that you have sufficient fuel modifications to support the increased amount of air being pumped in by smaller pullies. Underdog Racing Development
-Stock is 2.37" and the truck runs at about 7 psi
-URD 2.2" increases max boost by 1.5-2 psi over stock. This is the most common pulley to add.
-URD 2.1" increases max boost by 3.5-4 psi over stock. Tuning is highly recommended with a pulley this small.
*Note that the supercharger is known to handle about 15 max, so be careful.
-----
Methanol Injection:
Some users choose to add methanol injection instead of or in addition to extra fuel injectors. Methanol injection changes the A/F ratio at high throttle to increase power.
Here is the main thread Methanol users go to start out:
Texas_Ace's Cheap DIY Meth/Water Injection kit Writeup! Get 10hp+ for under $150! - YotaTech Forums
Pros:
-inexpensive
-Fairly simple to install
Cons:
-Have to refill methanol tank occasionally
-In-Depth Tuning is pretty much required
-----
Cooler thermostat
The stock thermostat is rated at 180* F and keeps the engine around 193-195*. However, The stock thermostat is known to be unable to keep the engine in the optimum range of temperatures with a supercharger. With a supercharger, you will notice temps above 200* very often.
Stant 14077 is a 170* thermostat and will maintain a cool engine despite whatever high performance runs you are doing on the supercharger. With a supercharger, expect to see temps of 185-190*
The TRD thermostat is a 160* and many people recommend running this ONLY if you do a very accurate tune and are trying for maximum performance. Be cautious with this one. You will often see the engine running around 175-180*.
-------
Performance Headers
headers are the manifolds that handle the exhaust gasses from the engine. The stock headers are not known to be very efficient. Performance headers can increase power by approximately 10-15hp.
Brands of performance headers for these vehicles are:
-TRD
-Doug Thorley
-OBX
-----
High Flow Exhaust
Any high flow muffler is a good idea to match the increased volume of air going through the engine. It is also beneficial to add a high flow Catalytic converter, although doing this will trigger an O2 sensor code. So if you decide on a high flow CAT, also look into the URD rear O2 sim kit. It will prevent the code.
Underdog Racing Development
Last edited:
out:
I left the 4runner over at the parents house till the weekend...
