aristo1987

Anybody ever removed them or replaced them before?

Any instructions on how to removal them?

Planning to buy some headers and need instructions on removing the stock manifolds...wonder if its hard?

Thanks

Othic

You'll be better off taking it to someone.

ibidu1

iTrader: (1)

Ive never done it for a lexus GS but I have plenty of other cars. A tip is spray some pb blast on the header bolts, down pipe, heat shields etc the night before. That way you lower your chances of snapping off a stud.

It should be to difficult

Sodium

You should be able to find removal/installation instructions at techinfo.toyota.com. As for whether it's hard or not, that really depends on how comfortable you are with wrenching on cars and how extensive your tool collection is. There probably won't be a huge amount of room to maneuver, but it's not an inherently complicated job. Be sure you have an O2 sensor socket.

On the other hand Othic is a Lexus tech, so I'd take his advice into consideration unless you're confident you can do the job

aristo1987

damn, not I wanted to hear! thanks guys...

Anyone here from southern california knows reputable place to get it installed?

Sodium

Don't take what I said the wrong way, I'm definitely not trying to discourage you from doing it. The first piece of auto repair I ever did (aside from oil changes with my dad when I was 8) was the water pump on my 3GS – it wasn't an easy job ad it took like 6 hours, but it turned out fine! Replacing the water pump is probably a more technically challenging DIY than headers are. The point is, if you have a good set of tools, good instructions, some free time, and are patient, you'll be able to do it!

What other DIY work have you done on your car?

aristo1987

Oil change, spark plug change, tranny flush and exhaust snd midpipe install.

But all these i was able to find instructions on clublexus. Nothing with manifolds :/

Wish there was a clear write up or vid

Sodium

Okay you should definitely be able to do the manifolds. As for instructions, go to techinfo.toyota.com, create an account and buy 2 day access ($15 I believe). This will give you access to all the Toyota/Lexus factory manuals, wiring diagrams, diagnostic workflows – basically everything a dealership tech would have access to. You'll find all the info on removing the manifolds and installing the new ones, as well as the correct torque specs for all the fasteners. And you can print and save the document as a PDF. I've used these manuals for several repairs before and they've always made the job so much easier – worth the $15 for the correct torque specs alone!

aristo1987

Thank you!