The 3.4L TRD Supercharger Thread

So for all your folks with more experience than me: Are you using a blind hole puller to remove the rear housing needle bearings on a gen 2 supercharger? I've tried to read as much as I can but some folks seem content to bash/press them out.

If you're using the puller, are you doing anything to the bearings before, or just cramming the puller in and cranking away until it grips?

There are two different castings used on the Gen 2 SC. One you can push the needle bearings out the back and the other you have to pull one of the out with a blind bearing puller as the back is not open. I could not get mine out and ended up having it cut out with a die grinder. Was more expensive but not terrible. I have attached a pic of the different castings. Mine is the one on the right.
 

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There are two different castings used on the Gen 2 SC. One you can push the needle bearings out the back and the other you have to pull one of the out with a blind bearing puller as the back is not open. I could not get mine out and ended up having it cut out with a die grinder. Was more expensive but not terrible. I have attached a pic of the different castings. Mine is the one on the right.

Thanks man, just what I wanted to know! Now, to tackle them...
 
There are two different castings used on the Gen 2 SC. One you can push the needle bearings out the back and the other you have to pull one of the out with a blind bearing puller as the back is not open. I could not get mine out and ended up having it cut out with a die grinder. Was more expensive but not terrible. I have attached a pic of the different castings. Mine is the one on the right.

Very interesting! I was wondering why some people with the 2nd gen charger were saying they could press our the rear bearings, I thought they were just lying because there's absolutely no way to press mine out.
 
Hope I can help with some of your questions.

1. Pinging is not going to damage these engines. They are rock solid and very tough and designed to run at 7 PSI with no fuel mods at all. So be confident driving your 4Runner. Many of us, including myself, have had over 100,000 miles on just the supercharger alone.

Sorry, but I disagree. Enough pinging will hurt ANY motor, even a Toyota.

The solution is to stop the pinging by properly calibrating timing, fuel, or running a better fuel... or all of the above.
 
Re-Gap Your Plugs!

[MENTION=8729]Speedy[/MENTION] [MENTION=53470]Rockdawg84[/MENTION] [MENTION=14772]shootmymime[/MENTION] and anyone else I can't think of running a 2.1" pulley or smaller:

Re-gap your plugs to 0.035"! I just did it and took it out for a spin and WOW what a difference! I always felt like the power fell off at the top end, with a supercharger it's supposed to build power more and more as the rotors spin faster but mine kinda flopped above 4500. It still pulled, but not all that great.

Now it pulls all the way to red line and wants to pull further, but I'm not looking to push RPM's any higher. A few engine builders I was talking with highly recommended changing it and I'm so glad I did!

For reference, if you have the IK22's in there they are pre-gapped at 0.043". And yes, you can re-gap Iridium plugs, just be carful of the tip and use a feeler gauge to check thickness, not one of the coin-shaped tools. Here's a great resource explaining why it's important: The Skinny on Spark Plugs : SuperchargersOnline, Worlds largest Supercharger Resource. Get Serious About Power
 
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You do need to gap plugs down for boost as it'll actually blow out the spark. .043 is definitely too big of gap.

I have mine at .032 I think, runs strong through the RPM range.
 
Mine were not, they were gapped at 0.043" out of the box which is the factory settings for a 4Runner. I bought them from a Toyota dealership too.

I still can't believe how much of a difference it made!

Good info for future reference, Jerod!
That reminds me of a spark plug testing machine that was in the automotive shop class in high school. We would play with it making it spark and then adding pressure until it would stop sparking. I never gave any thought as a kid that pressure could affect the ability of the plug to spark, till then. That is when I learned that just because a plug sparks when it is grounded outside the head doesn't mean that it sparks when installed.
It looked like the machine was made in the 1950's but still worked perfect. I learned a lot in that class!
 
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Mine were not, they were gapped at 0.043" out of the box which is the factory settings for a 4Runner. I bought them from a Toyota dealership too.

I still can't believe how much of a difference it made!

But to confirm, 0.043" is the proper gap if you're running the stock pulley?
 
But to confirm, 0.043" is the proper gap if you're running the stock pulley?

Any FI setup should have plugs gapped appropriately. I'd probably run .038 - .040 on stock pulley personally, but if your truck is rockin' at .043 then leave it be. You'll feel some power pull at high RPMs if it's not right.
 
Im rebuilding a 2nd Gen (black) Supercharger, I am doing a full rebuild (Nose cone and rear bearings), I have been browsing ebay looking at the rebuild kits and have a few questions.
Where is the best (and cheapest) place to buy rebuild parts?
Are there any kits or sellers that anyone would recommend?
Should I stay away from certain bearings or parts manufacturers?
Thanks!
 
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