can 2jz sequential switching mechanism be ditched?

[2jizzle]

as title states. Motor is being used in race only application and will be converted to single when funds allow.
motor is to be run by microtech ltx12.

Also am wanting to track down info as to what sensors are what on engine block.

any help appreciated

[Draven]

go to www.mkiv.com and search for "TTC". it will take you no time at all (I've just done it to mine)

[2jizzle]

go to www.mkiv.com and search for "TTC". it will take you no time at all (I've just done it to mine)

The link worked, but typing in TTC in search didn't bring up a dam thing

[Draven]

http://www.mkiv.com/techarticles/ttc/ttc.htm

[kingmick]

draven, what sort of arrangment is the squential setup?

[Draven]

rephrase with more details please? It's 30 minutes till my shift ends, I'm now officially a space cadet

[kingmick]

sorry mate! ment is it an electronic setup etc or manual type setup?

[Draven]

electric switching of the valve thingies

[kingmick]

thanks mate.

[Norbie]

If you want to permanently disable the sequential system, a better option is to remove the valves and crap entirely, run a proper dual dump like the 1JZ boys do, and plumb in a cheapie external wastegate via the crossover pipe which joins the manifolds. This is exactly what I plan to do in the near future, and I predict it will liberate a fair amount of horsepower by removing all those restrictions in the exhaust flow.

[Mos]

Norbie, how do you plan to weld to the bellows type crossover pipe?

The exhaust valve is easy to remove, especially if you haven't made the exhaust yet. The twin outlet from the dumps is the same flange as the valve, so removing the exhaust valve assembly just means your piping to the flange only needs to be longer.

IIRC the top charge air valve sits inside the casting from the second compressor outlet, making it harder to remove. You could either remove it the normal way of removing butterflies, or fabricate a replacement pipe.

Draven - I am speechless on the advice in that link - you didn't have any serious thoughts of doing that? (The same effect can be achieved by running power to both solenoids that open those actuators, and is probably easier to reverse (BTW, IMO reversibility is the only reason you would do that, or the advice in the link)).

Mos.

[Draven]

nah, it's better to just do the "temporary" fix, which actually works well permenantly

I only tried the "hard wired" method to ensure there was no problem with any part of the sequential system (electrical, or otherwise)

[Mos]

I figure if you're leaving all the butterflies in the way you may as well make use of them
If you make the "temporary" fix electrically (by applying power to the two relevant solenoids), you can always flick a switch and return it back to factory operation...
Mos.

[Norbie]

Norbie, how do you plan to weld to the bellows type crossover pipe?

Having never seen said crossover pipe (there's turbos and stuff in the way ) I haven't given it much thought yet. If need be I'll weld a new pipe to the manifolds.