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thechuckster
Forums Junkie

Location:
Brisbane
Registered:
February 2003

Re: 1G-GTE GT28 upgrade question

Wed, 01 October 2003 12:18

dispatcher wrote on Wed, 01 October 2003 01:56

Someone please

Quote:

Just one more thing I have also discarded the butterfly(s) on the head side of the inlet manifold and all of the attachments for that. I also got rid of the start injector

What Butterfly ?? Head side of the inlet manifold ? Any benefits to this ???

And the start injector ..what would removing this benefit ??

cheers

there are butterflys in the second intake runner for each cyl. They are in a plate that sits between head and intake manifold - and are regulated by manifold vacuum/pressure. i think they open up at higher flow allowing air to flow to second intake valve in head. (is this right?)

is debatable what benefit it provides other than to reduce airflow at low engine speeds/load so it doesn't run lean (i think). I'm trashing it as i'm not going to use the toyota engine mngt.

plus if you run the engine hard they'll be open anyway - and if the mechanical controller fails, it will be in the closed position.

start injector is only used when engine is cold - if you use aftermarket ECU, you should be able to set some sort of cold-start enrichment.

charles.

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