WTB: L300 manifold

silva_jb · Post by **silva_jb** » Tue Nov 08, 2011 7:25 pm

hey guys current searching for an L300 mani to finish off my MPI conversion.

hoping to score one in time for the weekend, will drive pretty much anywhere in victoria to pick it up.

thanks

redzone · Post by **redzone** » Tue Nov 08, 2011 9:16 pm

i have one, i can get it freighted to melbourne by the weekend if u do a cash deposit into a westpac tomorrow so it shows up in my account straight away..

silva_jb · Post by **silva_jb** » Wed Nov 09, 2011 5:59 am

how much for the item and postage?

redzone · Post by **redzone** » Wed Nov 09, 2011 8:01 am

$180 shipped, has fuel rail etc but no injectors or throttle body (not that u want them anyway)

starionc · Post by **starionc** » Wed Nov 09, 2011 10:39 am

What's wrong with the throttle body? What should be used instead?

thrash · Post by **thrash** » Wed Nov 09, 2011 12:03 pm

have one too, with throttle body, as well as double valve springs for the sohc!

but i won't be able to post before the weekend unfortunately

redzone · Post by **redzone** » Wed Nov 09, 2011 12:19 pm

starionc wrote:What's wrong with the throttle body? What should be used instead?

the L300 one is TINY, 50mm by memory, same size as a JA eci tbi one..

Why bother with mpi if ur gonna restrict it the same as the stock setup...

redzone · Post by **redzone** » Wed Nov 09, 2011 12:20 pm

And yeah use something 60-65mm for best drivability

starionc · Post by **starionc** » Wed Nov 09, 2011 12:40 pm

So what would be the easiest bolt on TB? Or do I need mod it to fit?

enthuzed · Post by **enthuzed** » Wed Nov 09, 2011 1:12 pm

redzone wrote: the L300 one is TINY, 50mm by memory, same size as a JA eci tbi one..

It's 48mm, piss ant size!

redzone · Post by **redzone** » Wed Nov 09, 2011 2:09 pm

starionc wrote:So what would be the easiest bolt on TB? Or do I need mod it to fit?

Nothing worthwhile is a direct fit, you may be able to redrill the bolt pattern & bore the centre out to accept something bigger, but the best thing to do is make a new plenum and fit a falcon tb for example. Use the base of the original plenum then fit a tubular one on top..

OLD FART · Post by **OLD FART** » Wed Nov 09, 2011 4:38 pm

Or you can use a Gallant or Hyundai mpi inlet .( I have one if you need one)
The bigger TB will make it more responsive at smaller throttle openings

starionc · Post by **starionc** » Wed Nov 09, 2011 4:55 pm

My old rally car had twin 45s = 180mm of throttle body :D And that was an N/A 1700cc Gallant motor. Sweet little motor that was! Shame the LB lancer was not as sweet with it's live rear axle :x

I'll look into a new plenum later, as that would also mean new cooler piping on that side :( And if I'm going to do that I may as well get the new turbo I want and redo that side, Then re tune the car

Ah money money money .........

redzone · Post by **redzone** » Wed Nov 09, 2011 6:10 pm

you didnt really have 180mm of throttle body ;)

with 1 butterfly per runner induction, as each intake valve opens, it only breathes through one 45mm butterfly.

with shared plenum induction, you have a large reserve of air and a throttle plate to breathe through, if you have too large a butterfly then you swamp the system with too much air..

thats why u can easily overcarb engines with holley's etc but it's a lot harder to do with individual throttles!

starionc · Post by **starionc** » Thu Nov 10, 2011 9:22 am

45 + 45 + 45+ 45 All open at the same time at full noise is 180, at least that's what I told one of my mates hotrod friends that was crapping on about his biggest available 80mm TB in a 5.7L V8 Rod. 180mm on a 1.7L 4 banger mate :D

Austarion

WTB: L300 manifold

WTB: L300 manifold

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