Installing Doug Thorley Headers on 2005 4.7L V8 w. 2" BL

[WhiteBoomer04]

So beyond the to-and-fro going on here, to the OP - did you look into doing a relocation of the steering shaft? That should have been be a pretty effective solution considering the hassle this caused you. I feel your pain. Sucks when stuff doesn't work out and you are going back and forth.

I'm looking forward to having hydro assist steering with my solid axle conversion and pushing 40's around corners lol.

 

[Cpt_Romania]

So beyond the to-and-fro going on here, to the OP - did you look into doing a relocation of the steering shaft? That should have been be a pretty effective solution considering the hassle this caused you. I feel your pain. Sucks when stuff doesn't work out and you are going back and forth.

I'm looking forward to having hydro assist steering with my solid axle conversion and pushing 40's around corners lol.

I did not look into because this was taking so long and we had limited resources and it was sucking up more money day by day. I did my research on the "dimple" method and found positive results from various guys and then just went for it. I appreciate your sympathy but I'm afraid your only making things worse, the thought of 40s and the SAS swap makes my hands sweaty, thanks maybe sometime down the road soon, soon...

I seriously hope you keep us all in the loop for that.

Have a great day!

 

[Kimokona]

You are right in that something like what I did could have detrimental affects on performance if we were talking a high performance race engine and at that point even your carbon fiber shift knob would probably make a difference ( maybe not quite ) but this is a more or less stock engine made to take me from point A to point B and alot of that happens to be off the beaten path.

If I had a pavement warrior like you I would probably feel the same way! But my 4runner and I are doing just fine on and off the road right now!

I will definitely be keeping whoever is interested updated.

Thank you.

I was reading a completely different forum about motorcycles and read this by chance, the guy bent his header, it does make good sense.

Quote: There is no doubt in my mind that you have a tremendous hot spot. When the hot gasses hit that spot a small shock wave will rise and the overall flow will somewhat deminish with excess heat as a result. I am sure you are aware of this, but many times the compounding effect can break the motor. If the FI sees the increased it can vary the A/F ratio in extreme cases..... And more heat can be created. End quote:

That’s not a dimple, that’s crushed, it’s your vehicle, do as you like and good luck.

 

[cloud]

Damn, what's the record for body lift? Didn't know anybody went above 2"

On a scale of "standard" exhaust sounds. How is it really? My phone won't do that sounds Justice.

Is it like a stock Harley road King? Or more like a road King with a blunderbuss barrel for exhaust?

It sounds great, good note at least. Seems like if it were ones idea of loud, a few feet of pipe and a flowmaster might pull it down to "gated residential before midnight" loud.

I wish I could hear a set in person. I'm very interested in installing them, but I don't live in the country anymore.

Sent from my XT1710-02 using Tapatalk

 

[Inv4drZm]

For those that want to run a body lift with these headers, you'll be a lot better off by choosing one in the <2" range.

A special bolt and a small dent are all that is needed at most. You may not need to do anything with a BL under 1.5".

With a 2.5" BL it rubbed a little bit but he could still steer.

http://www.toyota-4runner.org/4th-gen-t4rs/170390-t-mans-05-sport-build-thread-28.html

 

[Cpt_Romania]

Damn, what's the record for body lift? Didn't know anybody went above 2"

On a scale of "standard" exhaust sounds. How is it really? My phone won't do that sounds Justice.

Is it like a stock Harley road King? Or more like a road King with a blunderbuss barrel for exhaust?

It sounds great, good note at least. Seems like if it were ones idea of loud, a few feet of pipe and a flowmaster might pull it down to "gated residential before midnight" loud.

I wish I could hear a set in person. I'm very interested in installing them, but I don't live in the country anymore.

Sent from my XT1710-02 using Tapatalk

Good question but as far as from what I have seen, 2" is the most I've seen vendors offers, it's what I went with as well from Fat Pats Body Lifts.

Ok now as for the exhaust, hahaha, honestly I get giggly everytime I think about it, I have no idea what any of those bikes sound like but I've heard Harley Davidson's before and the car is not THAT loud, but it is pretty close. I personally have no problem with it, yet, still pretty young and rambunctious

You have to hear it for yourself, it's around 3k rpm that it transforms into something else, I like having that option at my disposal

 

[Inv4drZm]

Good question but as far as from what I have seen, 2" is the most I've seen vendors offers, it's what I went with as well from Fat Pats Body Lifts.

Ok now as for the exhaust, hahaha, honestly I get giggly everytime I think about it, I have no idea what any of those bikes sound like but I've heard Harley Davidson's before and the car is not THAT loud, but it is pretty close. I personally have no problem with it, yet, still pretty young and rambunctious

You have to hear it for yourself, it's around 3k rpm that it transforms into something else, I like having that option at my disposal

Do you have a 2" or 3"? In the title and first post you say 3", here you say 2".

 

[Cpt_Romania]

Do you have a 2" or 3"? In the title and first post you say 3", here you say 2".

You are completely right, I can not believe I missed that, I am very sorry. I will fix that immediately.

 

[Direwolf82]

More like who needs exhaust flow??? I’d throw a wide band on there to be sure your a/f ratio isn’t all jacked up


Sent from my iPhone using Tapatalk

There have been a few videos on denting headers to fit.
Check out Engine Masters, think it's called the great header bash. They smashed the headers and Dyno'd. No appreciate power or flow loss. Really surprising stuff.

 

[Zero0575]

You are right in that something like what I did could have detrimental affects on performance if we were talking a high performance race engine and at that point even your carbon fiber shift knob would probably make a difference ( maybe not quite ) but this is a more or less stock engine made to take me from point A to point B and alot of that happens to be off the beaten path.

If I had a pavement warrior like you I would probably feel the same way! But my 4runner and I are doing just fine on and off the road right now!

I will definitely be keeping whoever is interested updated.

Thank you.

BUMP! How are things after almost a year of driving with the dented headers?

 

[Cpt_Romania]

BUMP! How are things after almost a year of driving with the dented headers?

Thanks for asking, the car is doing just fine so far, I'm being honest and not trying to cover my own butt. Runs just as strong and loud as ever. The timing belt/tensioners/pulleys were all changed a couple months after that. My Ac compressor just went out and I have to fix that but the engine itself is a beast.

I will admit, those gas mileage "increases" that I partly used to help me justify the whole header job, have not been realized yet ... I still get the same gas mileage as before, which is about 12.4 with my 35s and armor. So that was pretty annoying but otherwise, it's great.
I am thinking about an CAI soon though, might help mpgs.

I'll be happy to show anyone in the area the rig if they would like!

 

[Zero0575]

Thanks for asking, the car is doing just fine so far, I'm being honest and not trying to cover my own butt. Runs just as strong and loud as ever. The timing belt/tensioners/pulleys were all changed a couple months after that. My Ac compressor just went out and I have to fix that but the engine itself is a beast.

I will admit, those gas mileage "increases" that I partly used to help me justify the whole header job, have not been realized yet ... I still get the same gas mileage as before, which is about 12.4 with my 35s and armor. So that was pretty annoying but otherwise, it's great.
I am thinking about an CAI soon though, might help mpgs.

I'll be happy to show anyone in the area the rig if they would like!

Appreciate the reply! I'm not in the area - I'm in Indiana. I was just curious because I am waiting to get my 4Runner back from the shop and they are having to dent the headers to get them to fit - similar to your situation.

Cheers!

 

[That_Titanium_4RNR]

At what body lift height does the steering shaft begin to rub on the headers? Can I run 1" with no issues? 1.25"? 1.5"?

 

[Cpt_Romania]

Appreciate the reply! I'm not in the area - I'm in Indiana. I was just curious because I am waiting to get my 4Runner back from the shop and they are having to dent the headers to get them to fit - similar to your situation.

Cheers!

Good choice honestly, you won't regret it. Hope the shop guys are having as much fun as I did! Let me know how it goes and what you decide as your exhaust route?

 

[Zero0575]

Good choice honestly, you won't regret it. Hope the shop guys are having as much fun as I did! Let me know how it goes and what you decide as your exhaust route?

The shop has had my car for 6 weeks now, so they must be having fun. I spoke to the owner yesterday and he said they "will have things wrapped up this week", but that is a whole different conversation that I'll spare you from...

I decided to keep everything stock other than the headers to keep things quiet. I have a straight piped WRX that I can use to be loud when I want to :bluejump:

 

[Cpt_Romania]

The shop has had my car for 6 weeks now, so they must be having fun. I spoke to the owner yesterday and he said they "will have things wrapped up this week", but that is a whole different conversation that I'll spare you from...

I decided to keep everything stock other than the headers to keep things quiet. I have a straight piped WRX that I can use to be loud when I want to :bluejump:

Haha I feel your pain. How much are they charging you for the whole shebang if you mind me asking?
And why are you doing the headers? Just for the exhaust tick?

 

[Zero0575]

Haha I feel your pain. How much are they charging you for the whole shebang if you mind me asking?
And why are you doing the headers? Just for the exhaust tick?

I got the headers for $750 and they estimated $1000 for the install. And yep, I bought this thing in May with the exhaust tick and took two road trips in it (one to GA and one to WV) and was so annoyed with the tick that I justified spending $2k, hah! So only doing it to fix the tick.

P.S. called the shop again yesterday and the owner (who is supposed to be working on my car) "had a family emergency" and is out for the rest of the week. This is after they called me earlier this week telling me my car was done, I took a 30 minute Uber to the shop and it was a DIFFERENT 4RUNNER that they had mixed up with mine.

If anyone in Indiana wants to chime in and offer to do this (name your price!) or knows of a shop that's not full of idiots that can do this, please let me know!

 

[HOJeepster]

At what body lift height does the steering shaft begin to rub on the headers? Can I run 1" with no issues? 1.25"? 1.5"?

My steering shaft most definitely rubs on the driver side header when Ii'm at idle.

 

[That_Titanium_4RNR]

My steering shaft most definitely rubs on the driver side header when Ii'm at idle.

You have a 1 inch bl right? Have you swapped to a flatter head carriage style steering shaft bolt yet?

 

[Toyrundrive]

I got the headers for $750 and they estimated $1000 for the install. And yep, I bought this thing in May with the exhaust tick and took two road trips in it (one to GA and one to WV) and was so annoyed with the tick that I justified spending $2k, hah! So only doing it to fix the tick.

P.S. called the shop again yesterday and the owner (who is supposed to be working on my car) "had a family emergency" and is out for the rest of the week. This is after they called me earlier this week telling me my car was done, I took a 30 minute Uber to the shop and it was a DIFFERENT 4RUNNER that they had mixed up with mine.

If anyone in Indiana wants to chime in and offer to do this (name your price!) or knows of a shop that's not full of idiots that can do this, please let me know!

In my experience, every "mechanic" in Indiana is a moron