Hi I was wondering if you had to lift the engine in order to get to some of the bolt? I saw in another video that they disconnected the engine mounts and lifted the engine. Please let me know. Thank you and Thank you for the awesome video.
@dec2mclaren I had more trouble with the passenger side than driver. If you have studs still in the head, it will block a lot of your movement. Might want to remove them with a double nut.
@@boundlessbuilt943 I didn’t want to but needed to hear this. I’m on day 3 of this job and for the first time I’m really really stuck and don’t know what to do. I guess I will try that. I’ll have to google double nut lol
I use Mastinox when replacing engine bolts. It creates a barrier between dissimilar metals and prevents corrosion. We use it on all our aircraft in high corrosive areas.
Share determination wins the game you and your girl got it done looks great. Hopefully you don’t have to ever do it again huh? But my question was if you’re replacing the exhaust manifold, why not just put new O2 sensors in as well but awesome job they’re a pain in the ass. Any check engine lights?
@@saradaniellahti5249 The o2s (all four) and really easy to access while installed so if they needed replacing then it wouldn’t have been hard. I replaced two like 70k miles later. No CELs with spacers on the down stream o2s.
Sick 4runner man. My 2003 V8 4runner has so much more rust. Its so sad. Frame has a few holes. The front right tow hook I literally ripped off by hand. I have a horrible ticking from cracked manifold. Transmission lunges when downshifting from 2nd to 1st coming to a stop. It also has the dreaded ABS constant beep issue. I am determined to bring it back to life though.
Keep it alive man!!! Check your trans fluid level, my trans had demon in it for a bit after one of the trans cooler lines blew and I found that the fluid levels would drop even after a top off - I attribute this to the system “burping” and getting the air out of lines and such.
@@boundlessbuilt943 I have a CEL code that is for the transmission temp sensor or something like that. I THINK that might be my culprit for the hard downshift from 2nd to 1st but I didnt think about checking the level of the fluid. I'll try that. I have to get that ABS beeping figured out first though that beep is so loud and obnoxious I cant even drive with it. I really need to get my car lift installed. Once I get that done I will really bring this 4runner back to life.
@@SkinnySkinch Sounds like a good plan to me. While your doing the lift, do a quick visual inspection of your abs sensors on the back of the hubs - your problem might be a quick fix.
Hey thanks for these vidoes! Has me excited to spruce up our 03 v8! Did you notice any road acceleration/towing power after the exhuast and header? Can you update this video with links for all parts neccesary in the note description section!? Thanks!
The o2 spacers are no longer sold and don’t have a part number so I didn’t list it. The only other part I added in this video were the longtubes themselves. As for power/torque - yea there was an absolutely noticeable difference as well as a noticeable gain in mpg.
@boundlessbuilt943 I'm in the middle of drilling out the driver rear valve cover bolt that snapped off. Course after doing the cam seals, timing belt and water pump, that's the only thing holding me up.
@@DrunkenChewbacca oh man, you’re doing the whole 9 yards. I snapped 6 of my cable cover bolts, those rear ones are a pain. Take your time and keep chuggin
How have they held up so far? And who did you buy the headers through? My engine is torn apart rn at a shop and I need new headers. I wanna go with the long pipe for the v8 but I’m struggling to get any information from any of the companies who sell them. So I’m curious as to who you bought them from.
They are going strong! I bought directly from DT. New EPA regulations have screwed up all parts that touch emissions controls- EPA is threatening fines for each part listed for sale so companies are less inclined to sell them.
I'm doing this project now. How did you manage to remove the bolts underneath? They're a pain! I rounded off 3 and used extractor bolts but to no avail.
The ones that wouldn’t budge I put an extractor socket (bolt biters or whatever they are called) on them and a couple came out. The rest sheered off and I ended up drilling those out.
Thanks. I’m using those bolt extractors and the nuts are way too soft for these. Did you try to cut them off with a Dremel. I see you using one in the video.
I can not find any shop to take on this job lol wish I had the tools and space to do it. I'm somewhat mechanical inclined but damn these got a badddd wrap for being difficult every single time lop
@@boundlessbuilt943 I am considering just doing magna flows oem replacements since it seems to vary from people having no issues with dt Headers to having litteraly all the problems lol. Thanks for your reply.
Yes! I hit a few points during this process that I needed to pause and step back and DBB helped with that. I also took this rig camping there for the Overland Expo East last year.
@@boundlessbuilt943 I would have needed a few during that job as well! My brother works at the brewery and brought some cases home for the holidays and I couldn't believe it when I saw it on your bumper! Cheers 🍻
@@clayross6765 hahaha thank you!! We still have more coming. I’m working on getting a rear bumper with tire swing at the moment but I’m also trying to repair our FRS after a deer decided to smash into it. As for DBB, We loved it there, the cigar bar is awesome. I want to get back down there.
@@boundlessbuilt943 I'm going to try and make a trip up there this summer from Dallas to check out DBB in my 03 4runner! I'll have to check out the cigar bar!
@boundlessbuilt943 I appreciate the informative video. I'm wondering if you put the 90° spacers on the header sensors or the sensors behind in the y pipe area?
@boundlessbuilt943 Dam, the only ones I have are the two on the manifolds before the cats, and the two in stock Y pipe section. Have true duals into flowmaster mufflers from Y section back. I wonder what that will do to the sensor issue once I put the Doug Thorleys long tubes on......
what's up friend I have a 4runner 2003 v8 4.7L I'm looking for headers to install could you help me or do you have the link where you bought them I live in Los Angeles I would appreciate it if you could help me
Depends what you want. You have two options with Doug Thorley - direct bolt up (which removes your cats - not likely a good option for you in CA) or weld in (which you will have to have welded onto your current cats). Both of which are on back order. I’d call Doug Thorley and talk to them over the phone.
@@marlonrodriguez8943 I think you want the one in the link below but if you see they are out of stock which means they are made to order at the moment. I’d call them to see how long it will take to get them. www.dougthorleyheaders.com/thy-564-ss-c--2003-2004-toyota-4runner--lexus-gx470-4.7l-short-tube-headers_15794
Damn, I used a 90 degree elbow spacer for the down stream sensors. If you have a check engine light I’d go to an auto parts store and have them run a scan - sounds like your upstream o2 might be bad.
Sensor Spacer Spark Plug Adapter Sensor Extender 90 Degree Accessories M18 x 1.5 www.amazon.com/dp/B08VJ9QCDF/ref=cm_sw_r_cp_apip_743peR7WCbYAM It’s this one but it’s been discontinued. Id search the same thing and just make sure the thread is right.
Yea the other side was good. It lined up perfectly. I have never heard of other people having this problem so I imagine it was isolated to my rig - probably a previous owner did some exhaust work
Hey man I’m wondering if you could help me out. I have a weird rattle coming from the engine bay, check out my newest vid, you’ll be able to hear it well. I have no idea what it could be. I’m planning on getting longtubes soon and I’d like to have this fixed before then. I’d appreciate your input very much!
@@singlecabtundra0545 definitely not a knock. I’m wondering if it’s something in the valvetrain… I don’t think that’s an exhaust leak/crack either. Might need a valve adjustment but that could be a huge task.
'This is what we are doing today" is a grave understatement. Especially on the V8 model.
Truth
Amen
Awesome 4Runner Dude!
Thank you!!
Would heating the bolts with torch before removing the bolts make a difference?
Potentially. I used an induction heater and it only helped on a few
In about two weeks I’ll be tackling the same job my 07 4Runner V8 myself. I’m nervous but I know I can ⚔️ ⚒️ 🧰 🙏🏽❤️🔥
If I can, you can. Go get it!
Glad my 4runner is 2WD!
Hi I was wondering if you had to lift the engine in order to get to some of the bolt? I saw in another video that they disconnected the engine mounts and lifted the engine. Please let me know. Thank you and Thank you for the awesome video.
I did not have to undo any mounts for this install. There are always things you can remove to make this a little easier but I tried to minimize that.
I’m having trouble fitting my shorties because the steering column is right where the header is.
@dec2mclaren I had more trouble with the passenger side than driver. If you have studs still in the head, it will block a lot of your movement. Might want to remove them with a double nut.
@@boundlessbuilt943 I didn’t want to but needed to hear this. I’m on day 3 of this job and for the first time I’m really really stuck and don’t know what to do. I guess I will try that. I’ll have to google double nut lol
@dec2mclaren it’s just taking two nuts and tightening them against each other and using the nut closer to your head to wrench off.
Great video and thanks for sharing! May I know what’s your muffler?
ruclips.net/video/nBdUMqFAx8g/видео.html video here - It’s a Remark Bold.
I use Mastinox when replacing engine bolts. It creates a barrier between dissimilar metals and prevents corrosion. We use it on all our aircraft in high corrosive areas.
Good to know, appreciate the input
Share determination wins the game you and your girl got it done looks great. Hopefully you don’t have to ever do it again huh? But my question was if you’re replacing the exhaust manifold, why not just put new O2 sensors in as well but awesome job they’re a pain in the ass. Any check engine lights?
@@saradaniellahti5249 The o2s (all four) and really easy to access while installed so if they needed replacing then it wouldn’t have been hard. I replaced two like 70k miles later. No CELs with spacers on the down stream o2s.
Sick 4runner man. My 2003 V8 4runner has so much more rust. Its so sad. Frame has a few holes. The front right tow hook I literally ripped off by hand. I have a horrible ticking from cracked manifold. Transmission lunges when downshifting from 2nd to 1st coming to a stop. It also has the dreaded ABS constant beep issue. I am determined to bring it back to life though.
Keep it alive man!!! Check your trans fluid level, my trans had demon in it for a bit after one of the trans cooler lines blew and I found that the fluid levels would drop even after a top off - I attribute this to the system “burping” and getting the air out of lines and such.
@@boundlessbuilt943 I have a CEL code that is for the transmission temp sensor or something like that. I THINK that might be my culprit for the hard downshift from 2nd to 1st but I didnt think about checking the level of the fluid. I'll try that. I have to get that ABS beeping figured out first though that beep is so loud and obnoxious I cant even drive with it. I really need to get my car lift installed. Once I get that done I will really bring this 4runner back to life.
@@SkinnySkinch Sounds like a good plan to me. While your doing the lift, do a quick visual inspection of your abs sensors on the back of the hubs - your problem might be a quick fix.
Hey thanks for these vidoes! Has me excited to spruce up our 03 v8! Did you notice any road acceleration/towing power after the exhuast and header? Can you update this video with links for all parts neccesary in the note description section!? Thanks!
The o2 spacers are no longer sold and don’t have a part number so I didn’t list it. The only other part I added in this video were the longtubes themselves. As for power/torque - yea there was an absolutely noticeable difference as well as a noticeable gain in mpg.
Wonder if it would be easier with the upper control arms removed.
Maybe a little but they weren’t in the way for the drilling of the bolts
@boundlessbuilt943 I'm in the middle of drilling out the driver rear valve cover bolt that snapped off. Course after doing the cam seals, timing belt and water pump, that's the only thing holding me up.
@@DrunkenChewbacca oh man, you’re doing the whole 9 yards. I snapped 6 of my cable cover bolts, those rear ones are a pain. Take your time and keep chuggin
Did these bolt to existing cats? Could you bolt direct into cat back with cat delete? Does the long tube replace stock y pipe?
These replace the manifold section (which includes the cats). So it will bolt up to the OEM y pipe.
How have they held up so far? And who did you buy the headers through?
My engine is torn apart rn at a shop and I need new headers. I wanna go with the long pipe for the v8 but I’m struggling to get any information from any of the companies who sell them. So I’m curious as to who you bought them from.
They are going strong! I bought directly from DT. New EPA regulations have screwed up all parts that touch emissions controls- EPA is threatening fines for each part listed for sale so companies are less inclined to sell them.
I'm doing this project now. How did you manage to remove the bolts underneath? They're a pain! I rounded off 3 and used extractor bolts but to no avail.
The ones that wouldn’t budge I put an extractor socket (bolt biters or whatever they are called) on them and a couple came out. The rest sheered off and I ended up drilling those out.
Thanks. I’m using those bolt extractors and the nuts are way too soft for these. Did you try to cut them off with a Dremel. I see you using one in the video.
Yea, once you get the manifolds out of the way you will have way more room to extract any stubborn studs/nuts unless you can reuse them lol
I can not find any shop to take on this job lol wish I had the tools and space to do it. I'm somewhat mechanical inclined but damn these got a badddd wrap for being difficult every single time lop
Lol The hardest part is trying not to break studs.
@@boundlessbuilt943 Do you have oxygen sensor codes by having these installed?
No, the angled ones helped me out but there are a lot of variable that factor into that - so your results may vary.
@@boundlessbuilt943 I am considering just doing magna flows oem replacements since it seems to vary from people having no issues with dt Headers to having litteraly all the problems lol. Thanks for your reply.
Yea, I went with dt but I had an issue with the flange so I feel ya
Did you just cut the resonator out cuz I’m think of doing that
Nah, the headers delete the catalytic converters off the factory manifolds but I kept the y pipe catalytic converter.
@@boundlessbuilt943 nah bro the resonator on our truck is that fat thing at the end of the exhaust which I see you don’t have anymore
I was wondering if you just cut it off or did something else
@@itsdoncartagena6485 Nah, I’m running Remark catback exhaust ->
ruclips.net/video/nBdUMqFAx8g/видео.html
What type of 02 spacers did you go with?? Would plug non foulers work??
They don’t have them on Amazon anymore but they are called “Sensor Spacer Spark Plug Adapter Sensor Extender 90 Degree Accessories”
Ok thanks!
Is that a Devils Backbone beer sitting on the front bumper?
Yes! I hit a few points during this process that I needed to pause and step back and DBB helped with that. I also took this rig camping there for the Overland Expo East last year.
@@boundlessbuilt943 I would have needed a few during that job as well! My brother works at the brewery and brought some cases home for the holidays and I couldn't believe it when I saw it on your bumper! Cheers 🍻
Oh and by the way, LOVE your rig. It is dialed!
@@clayross6765 hahaha thank you!! We still have more coming. I’m working on getting a rear bumper with tire swing at the moment but I’m also trying to repair our FRS after a deer decided to smash into it. As for DBB, We loved it there, the cigar bar is awesome. I want to get back down there.
@@boundlessbuilt943 I'm going to try and make a trip up there this summer from Dallas to check out DBB in my 03 4runner! I'll have to check out the cigar bar!
I need to do this to my 04 Tundra, but this project scares the crap out of me. Way to many ways to get stuck and reach a no going back point.
Yea depends on how rusty your bolts are. It helps to have an induction heater, a stud extractor, drill, and dremel ready when crap goes sideways
Cel light ON?
Not with the o2 spacers, no.
I appreciate the upload, you convinced me not to do this job!
Hahah, definitely recommend motivation for this project
Did your check engine come on for the O2 sensor
Not with the o2 spacers with the 90 degree elbow
@boundlessbuilt943 I appreciate the informative video. I'm wondering if you put the 90° spacers on the header sensors or the sensors behind in the y pipe area?
@luketh87 thanks! The spacers go on the downstream o2 sensors - so the ones closest to the exhaust pipe outlet
@boundlessbuilt943 Dam, the only ones I have are the two on the manifolds before the cats, and the two in stock Y pipe section. Have true duals into flowmaster mufflers from Y section back. I wonder what that will do to the sensor issue once I put the Doug Thorleys long tubes on......
I'm glad my gx470 is rust free.
I’m glad for you as well lol
Are you running a resonator at all?
I’m running the third cat in the y pipe and a muffler in the cat back.
Thinking of cutting my cats off, any recommendations for the check engine light after i do that?
Spacers with a 90 degree elbow. If that doesn’t work you might look at the URD piggyback
@@boundlessbuilt943 thanks 👍🏻
Id send you the link to the ones I got but they don’t seem to sell them
What did the tick sound like do you have a video of it
Yup - ruclips.net/video/nBdUMqFAx8g/видео.html
Really curious about no cats and the check engine light
I eliminated two of the three cats, so the y pipe cat is still there. Also I’m running o2 sensor spacers. No codes.
Is that what that is at 11:30?
@@yotadude80 Yep, but I later switched those out for 90 degree “sensor extenders”.
what's up friend I have a 4runner 2003 v8 4.7L I'm looking for headers to install could you help me or do you have the link where you bought them I live in Los Angeles I would appreciate it if you could help me
Depends what you want. You have two options with Doug Thorley - direct bolt up (which removes your cats - not likely a good option for you in CA) or weld in (which you will have to have welded onto your current cats). Both of which are on back order. I’d call Doug Thorley and talk to them over the phone.
it would be the second option to weld the catalytic
@@marlonrodriguez8943 I think you want the one in the link below but if you see they are out of stock which means they are made to order at the moment. I’d call them to see how long it will take to get them. www.dougthorleyheaders.com/thy-564-ss-c--2003-2004-toyota-4runner--lexus-gx470-4.7l-short-tube-headers_15794
How could I do to get
@@marlonrodriguez8943 Call (800) 347-8664 when they are open
Dose not having the catalytic converter throw off the check engine ?
No issues but I’m running o2 spacers.
did you use o2 spacers or a translator? I have these on my gx470 and I have lost power and fuel economy and I'm using spacers.
Damn, I used a 90 degree elbow spacer for the down stream sensors. If you have a check engine light I’d go to an auto parts store and have them run a scan - sounds like your upstream o2 might be bad.
@@boundlessbuilt943 no I needed different length spacers on each side. Have you felt an improvement in power and seen an improvement in fuel economy?
Yes to both. More low end power and ab a half a mpg in they city
@@boundlessbuilt943 it feels like i lost power and mpg. I have the doug Thornley y pipe with the two resonators and the Gibson exhaust
Is it throwing any codes?
How long did it take you to do this job?
With all the broken studs like 4 days.
Does it pass on Smog Test if you do this?
Good question, my state doesn’t do that so I can’t say for sure. I’d check the t4r forums for that.
@@boundlessbuilt943 What State are you in? I'm in California and we do have Smog Test every other year.
@@broletsdiginasmr5366 Country roads man (WV). We don’t even need catalytic converters but I still have one. Lol
@@broletsdiginasmr5366 If you’re in cali I wouldn’t even be thinking about being into modding anything vehicle wise
@@taliesinangling3564 No problem here, just don't cut the catalytic converter. Lots of offroad 4x4 mod here in Bay area.
Did you have any check engine lights
None yet, I recommend the o2 spacer with a 90 degree elbow.
@Boundless Built can you link the one you bought
Sensor Spacer Spark Plug Adapter Sensor Extender 90 Degree Accessories M18 x 1.5 www.amazon.com/dp/B08VJ9QCDF/ref=cm_sw_r_cp_apip_743peR7WCbYAM
It’s this one but it’s been discontinued. Id search the same thing and just make sure the thread is right.
@@boundlessbuilt943 it’s just a 90 degree one that’s it
Yup, the regular 1” spacer is hot or miss depending on weather for me.
how any hours do you think this took?
Probably ab 8-10hrs. Would have been less had I not snapped bolts.
How long did you have to wait for your DT Headers?
4 months. I ordered in January and they arrived in April. If you call them and order directly thru them they will prioritize you.
@@boundlessbuilt943 that is the best advice I've heard on how to buy DT Headers. Thanks!
2 days haha
Dose it pass smog
We don’t have that in my state
@@boundlessbuilt943 that's cool fuckin Cali sucks
Did you have noticeable power gains or not really? Any changes in MPG?
Yes to both. You can feel the power, especially down low and also I have seen a 0.3 mpg bump in city driving.
Did the longtubes/flanges line up to the stock flanges to the rest of the pipe? Thanks!
Yea the other side was good. It lined up perfectly. I have never heard of other people having this problem so I imagine it was isolated to my rig - probably a previous owner did some exhaust work
I have a 2004 & the drivers side header flange would not line up withe crossover tube. I had to cut, clock and reweld one flange on the pipe.
I just replaced my y pipe and had to clock it as well. Starting to think it’s the long tube flange that’s off.
Hey man I’m wondering if you could help me out. I have a weird rattle coming from the engine bay, check out my newest vid, you’ll be able to hear it well. I have no idea what it could be. I’m planning on getting longtubes soon and I’d like to have this fixed before then. I’d appreciate your input very much!
Link me to your channel, for some reason I can’t find it. Not sure if I can pin point it but I can try
@@boundlessbuilt943 ruclips.net/user/shortsEk07vDERxOo?feature=share
@@boundlessbuilt943 I appreciate your feedback!
@@singlecabtundra0545 definitely not a knock. I’m wondering if it’s something in the valvetrain… I don’t think that’s an exhaust leak/crack either. Might need a valve adjustment but that could be a huge task.
@@boundlessbuilt943 that’s kinda what I was thinking. I’ll give my mechanic a call tomorrow about it. Thanks for the feedback! Have a happy new year!
How is the smell with windows up? Windows down?
I don’t smell anything different. If you roll the rear glass down you smell exhaust vapor but that’s dependent on your exhaust tip angle