Wheelingnoob

To start this I am not looking for any more power, I just want to eliminate the dumb manifold crossover design. I do not want to buy headers as I see no need for them.

What I am thinking is taking the stock crossover pipe and scrapping it, then using the flanges from it that attach to the manifolds to make new divided pipes. I would bring them back together before the cat. To do this would get rid of one of the huge problems in this design the fact that the pass side manifold dumps right into the #6 exhaust port. I believe that this is a large contributing factor to the HG issues on this engine as well as all the burnt valves.

Doing so I get the cost savings of keeping the stock manifolds and time savings of not needing to remove them and stuffing in headers.

I have done quite a bit of exhaust work before and think this will be fairly easy and cost about $200 in materials.

Any one else done this? Or have any ideas?

Jeremy

CappyKD

Subscribed. Sounds like a good Idea.

Tracey98277

there was a thread about this like 2 months ago that had pics and a write up, i will go look for it.

Tracey98277

here is one of the good ones:

https://www.yotatech.com/forums/f116...61/index3.html

theres more out there you can find by using that handy search tool at the top right of the page.

Wrenchinjoe

It is called the "crossover elimination mod"

Jay351

Do it! Ive always wanted to, but don't have the tools

neoworm0

Sounds like a waste of time and money to me. Run the 3.0 till it blows and then swap in a 3.4 or buy another 3.0. If you put another 3.0 in modify the xover then or put headers on it. My $.02

Wheelingnoob

Well I would but my 3.0L only has 80K kms on it after Toyota put in a new long block under there campaign. Well see I need to redo my exhaust any ways.

lonecountryboy

Look up my post I did it for under 100 and made it with some header flanges so I could unbolt it if I had to. I will try to post the link later.

lonecountryboy

Here ya go.

https://www.yotatech.com/forums/f116...or-diy-198561/

Definitely worth it, and if you have a welder very easy to do. Now no more worries about #6 exhaust valve burning and head gasket issues around #6.

iamsuperbleeder

that just scares me for some reason

that down-pipe is running reeeeaaaaaly close to the fuel line...

maybe there's a reason Toyota kept the piping on the driver's side of the vehicle...

lonecountryboy

Plenty of room and I put heat shielding around it. Been running it for 3-4 months with absolutely no problem. You solve more problems with this than you create. same thing if you ran headers but this is much cheaper.

Wheelingnoob

Very nice! I plan on making mine just like that, it will be flanged too so I can remove it easily.