Ok i know these weren’t the best choice for quality but they were best choice price wise for me. Anyway had these headers installed last week by a friend. Was a pain in the ass as everyone knows. They fit ok but the problem is the crossover connection is hitting firewall at certain rpm and causing a bit of vibration. It’s a little annoying. What are some options here? I was think of getting a piece of wood in there and maybe trying to massage the firewall.also thought about stiffer motor mounts to reduce engine movement. Anyone run into this problem? It’s not my dd so i could probably live with it, but my other car was in an accident so the 4runner will be my main mode of transport. Thanks
OBX headers installed butvslight problem
- Thread starter Bigmd
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Lindenwood
New member
I would, as you said, try to massage the firewall away from the headers.
Good luck!
Good luck!
Yeah that seems like only option right now. It took my friend over a week working a few hours after work each night to install. There is no going back haha. I only did this because my factory cross over had a huge leak and i hates driving truck because of it. By all accounts fixing the factory crossover is not worth the headache. That’s why i chose to go with headers. On a side note the exhaust leak is gone and truck is for the most part quiet. I stuck a factory replacement exhaust on too with all new hardware and had the whole thing ceramic coated. Sounds ok. The OBXs have a runny sound .
Where the flange is it’s hard to tell exactly what’s hitting. The flange however is a ball and socket with 3 bolts. I’m guessing one of the corners is hitting a bit. I may just sneak a broom handle in there and start pounding for some clearance. Hard to see though , a lot of heat shielding on firewall. From what I’ve read any set of headers is a major pain to install and even the best headers don’t go in all that easy. If i didn’t have the leak in exhaust i wouldn’t have done it.
sleepydad
Senior Member
I did a set of doug thorley, can confirm headers on these trucks is a pain in the @ symbol.
I also had some clearance issues but was able to play around with the ball connectors and get things to clearance without contact. very happy with things now that I have things adjusted.
I replaced the heat shielding because the headers burnt thru the factory stuff on the driver side. I was only able to get about 1/4" of clearance on the driver side so...
I used this stuff, it's spendy but it works really well. I can't see any way of doing this job unless your engine is out, my engine was out.
https://www.amazon.com/gp/product/B0051UPLCG/ref=oh_aui_detailpage_o08_s00?ie=UTF8&psc=1
try doing the driver side ball connection first, get it kind of torqued down then head over to the passenger side and start tightening from there... go back and forth and check clearances along the way. this worked the best for me. also don't have the cat attached until you get clearance in the engine compartment. then head for the cat.
Sleepydad ots very tight in there . I’m not sure i can adjust it enough to get it to clear. Also very hard to see with the shielding in the way. No body lift for me. Will that help? Also lookin at the Thorleys the crossover connection looks a lot lower . Mine is closer to pass side head.
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