I was thinking about moving to something larger to get more performance and more fuel to my engine, but I didn't realize that it would require a fuel controller. So scratch that idea My truck has seen a lot of miles from a previous owner, and I'm not sure what the condition of the fuel injectors are. I know the spark plugs are worn down (replacing them with the Denso IK22's immediately) so I assume that the injectors may not be in the best shape. I guess i'm wondering if I should replace them with new stock ones now, or have them cleaned? I'm just trying to get my truck into good shape so it'll last me a good long time to come

 

As I see it the main advantages to the TRD 7th injector are it can be dealer installed and keep your factory warranty and you don't have to change out your injectors. If your factory warranty is over or nearly over or you are going to change out the injectors anyway you might as well get the URD fuel kit.

 

mt_goat: I'm trying to keep my mods simple and the 7th injector kit seems to be the best route. I am just making sure I know what other small supporting mods I should get as well to ensure that my truck is running smoothly without my heavy foot putting it in danger. I'm considering changing the injectors for new stock injectors because i'm afraid they may have a lot of wear & tear on them. I'm not really looking to upgrade them since midiwall informed me of the extra work/hardware required. Thank you for the advice though

I noticed that the URD kit includes a performance thermostat. Do I need to get the TRD thermostat while I'm getting everything else? Or is that not a necesity with the setup i'm planning on going with?

I have seen some people say that if you do not have a fuel kit of any sort installed, that you should run with ECT on. Is this a good idea? How come this helps?

I know i'm asking a billion questions and i'm sorry. I am searching through all the threads I can find, and I have been able to answer a lot of my own questions, but as I read I keep finding more things that I have more questions about. Thank you VERY much for helping me out. Once I get all of these upgrades going I will keep you posted on how everything is working out. I can't thank you enough though for your help.

Jon

 

You can pick up a 170* thermo from NAPA for about $10. It does the same thing. To further reduce ping, run a 60/40 mixture of distilled water and GM dexcool along with a bottle of Redline Water Wetter.

It simply holds each gear longer. The ping issue rears its ugly head lower in the RPM range (on mine between 1800 and 2800 or so). By holding the engine speed longer in each gear, the ping issue is slightly reduced.

 

Is this the thermostat you are talking about?: http://www.napaonline.com/masterpage...ure+170+Degree .

What is the difference between the 170 thermo and the OE 180?

Pardon my ignorance on the subject.. Where would I add this mixture?

 

He means add it in your radiator, as in drain what's in there right now, and use a Mix of 60% Distilled Water, 40% GM Dexcool Antifreeze, and a special additive called "water wetter" which helps cooling.

As for the thermostats, the number represents the temperature in degrees fahrenheit when it opens. The lower the number, the lower temperature (theoretically) that you engine will run. For a hot supercharged engine, this is important.

 

If you are planning on installing the 7th injector, don't waste your time replacing the tstat now --- you will get a new one in the kit.

 

Is that a 160 deg t-stat that comes with the kit?

 

Not certain - but I think so. I believe the SC gets the 170 and the 7th gets the 160. The install instructions just say TRD thermostat.

 

Alright, I am purchasing new spark plugs, and I have three quick questions.

1) I am getting the IK22 Iridium Spark Plugs from URD's website. Do they come with the appropriate gap that everyone suggests, or do I need to set the gap myself?

2) What does having a larger or smaller gap accomplish out of curiousity?

3) Should I replace anything else involving/supporting the spark plugs while I'm switching them out?

 

1. I am getting the IK22 Iridium Spark Plugs from URD's website. Do they come with the appropriate gap that everyone suggests, or do I need to set the gap myself?
   You will have to gap them. You should ALWAYS check the gaps. I've had plugs come correct, I've had them come wrong, from URD and other folks. Never take this for granted.
2. What does having a larger or smaller gap accomplish out of curiousity?
   The larger the gap, the more spark you'll get, the more fuel you can burn (in general). The aim is to get the largest gap that you can get while still being able to throw a spark across it 100% of the time. Gadget recommends .040", right now I'm running wider than that, btu I have a spark kicker.
3. Should I replace anything else involving/supporting the spark plugs while I'm switching them out?
   I've lost track... how old is the truck? Have the plug wires ever been replaced? If you don't know, then it's never a bad idea to go ahead and do so.

 

*Edit* Dang you Mark! Faster than me. OK, I will leave #3 up.

No. Not much has to be removed to do the plugs. Just make sure you use some anti-seize on the plug threads and dielectric tune-up grease inside the plug wire boots (where they snap on to the top of the plugs).

Oh and about the gap, make sure you get a feeler-type gapper. Autozone has them. Traditional gappers will NOT work.

 

Thanks for the info on the plugs guys. It was exactly what I was looking for
btw, is this the a feeler type gapper that you were speaking of?:
http://www.midwayautosupply.com//det...ption.asp?3948

I uploaded a sound clip (its actually a video, but it was dark and you can't see anything) of my supercharged 4R revving and linked it below. I am holding the camera in the engine bay close to the supercharger. I have not heard any other superchargers on a 4Runner, and I am wondering if the sound of the s/c is normal.. I am not sure when it was put on (I am under the impression that it was dealer installed) and I am wondering if it needs service. Do any of you guys with a good ear hear anything abnormal? Any suggestions on what I can if so? (From what I have read on gadgets webite I should obtain an overhauled nose drive from Magnuson if I am experiencing problems)

http://cdn-59.cdn.buzznet.com/assets...orig-38807.mpg

The sound I am most concerned about comes at the very end of the video when the engine is at complete idle. Thanks for your help!

 

hmmm... interesting., it sounds a bit like dieseling, but obviously it's not.

Christian, what do you think? You've heard the before/after of a rebuild...

 

Are you sure it's coming from the SC? You can get a stethosope at Napa for about $12. I had a noise similar to that with my 5VZFE and I found it coming from the fake water pump thingy where the fan/pulley bearings are.

 

Mine sounds just like that. I have about 3K miles on my SC'r and 92K on the odometer.

I assume you guys are talking about the sound of the SC "settling" as the engine speed comes back down. Yeah, mine did/does that after the Magnuson rebuild ($750).

 

Thanks for the input guys. The sound of the SC "settling" was my concern, and it looks like from what Christian said, this is a normal sound and I shouldn't worry.

Chistrian: I saw that you had posted the quote below in another thread on this board
Is there something else that you would recomend installing in addition to the 7th that you believe will remove any ping issues all together?

 

Well, let's see where you are before you start throwing parts into the mix. First get a baseline (where you stand after the 7th) then let's talk about other options. If you still get HG/LR ping, you will probably need to gain control of the timing (SMT 6 or FTC) or get control of the 7th itself to dump additional fuel. It sucks because I have 10 degrees of timing retard in that zone, and that is probably nailing me for 30HP and 30TQ, which hurts at low engine speeds. Once I get my injectors in I should be able to bring the timing back up for more power. I am looking forward to that!

Anyway, let's see where you are after the 7th if that's the route you take, then go from there.

 

Sounds just like mine as well 3k miles on the charger . Here is a video link of it Supercharged 95
.Thomas

 

Tragic Drive: I like the sound your engine puts out. Is it the aftermarket intake that gives it that lower note?