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Location:
Sydney - Northern Beaches
Registered:
January 2003
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18R-C Inlet Upgrade
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Mon, 27 January 2003 05:16
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Any one know a cheap and easy way to upgrade the inlet on an 18R-C, it's so bloody restrictive, I was thinking if nothing else to just trying to jack the carbie up a bit on a spacer block, to perhaps give it a bit extra torque.
Is there easily bolted on carbie/manifolds that will have better flow??
Thanks
Alan.
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Location:
Canberra
Registered:
December 2002
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Location:
Sydney - Northern Beaches
Registered:
January 2003
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Re: 18R-C Inlet Upgrade
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Tue, 28 January 2003 08:48
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Well, I was trying to get my hands on an 18r-g, but unfortunatly, the 18r-c had a bit of a failure and had to spen cash on it just to keep the thing running, so it'll have to wait till another day I guess.
Thanks anyway
Al
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: 18R-C Inlet Upgrade
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Wed, 29 January 2003 06:48
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You could try and get a 18R inlet manifold.
Nicer than the 18RC... doesnt have the emissions stuff connected to it everywhere. Very simple.
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Location:
Canberra
Registered:
December 2002
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Re: 18R-C Inlet Upgrade
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Wed, 29 January 2003 22:11
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i didnt think of that i have one of those but it still has that right angle bend straight after thw carby.
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: 18R-C Inlet Upgrade
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Thu, 30 January 2003 08:44
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| Jason wrote on Thu, 30 January 2003 08:41 |
i didnt think of that i have one of those but it still has that right angle bend straight after thw carby.
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That it does 
I wonder how difficult it is to weld...
Grind/cut out the bend and weld in a bigger turn area box.
BTW... the heat box, where the inlet and exst manifolds bolt together.
How do they join... i mean, are the mating sufaces flat, or somthing else like a passage for exst gas to move into a chamber in the inlet mainfold?
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I supported Toymods
Location:
Berowra-Sydney
Registered:
July 2002
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Re: 18R-C Inlet Upgrade
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Thu, 30 January 2003 09:37
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Get a weber, ring up pick'n payless in Sydney and see if they have an inlet manifold and double throat 45mm side draft webers. they should have them if they haven't already sold them.
how do i know?
they were off my car and my car is out there
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Location:
Sydney - Northern Beaches
Registered:
January 2003
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Re: 18R-C Inlet Upgrade
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Thu, 30 January 2003 11:21
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| M.W.P. wrote on Thu, 30 January 2003 19:44 |
BTW... the heat box, where the inlet and exst manifolds bolt together.
How do they join... i mean, are the mating sufaces flat, or somthing else like a passage for exst gas to move into a chamber in the inlet mainfold?
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they have a flat mating surface with a heat chamber inside, I belive this chamber has to do with the auto choke, theres a tube that runs down from the choke into and out of this chamber and then into the manifold I think. So the chamber heats up and I guess in turn heats the air in the tube and alters the amount of presure in the tube and changes the choke position. However if you have extractors as in my car this tube simply hangs below the manifold doing nothing.
Al
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Location:
Canberra
Registered:
December 2002
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Re: 18R-C Inlet Upgrade
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Sat, 01 February 2003 03:01
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The exh manifold has a dirty great hole there so the gases can get right up under the intake manifold. To seperate the manifolds you would have to seal up the exh which would rerquire grinding sufficient material off the manifold to fit a plate in.
That sounds like a lok of work to me the other option for you is to get a set of extractors which would improve your performance anyhows.
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: 18R-C Inlet Upgrade
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Sun, 02 February 2003 14:24
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Ahh right, thanks.
Thats what i was wondering... if there was a passage between the two manifolds.
I was lined up to get extractors, but that fell through
I wonder if extractors would really be worth the effort anyway.
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Location:
Canberra
Registered:
December 2002
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Re: 18R-C Inlet Upgrade
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Sun, 02 February 2003 22:26
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i USE TO HAVE EXTRACTORS ON MINE AND THEY DID MAKE A NOTICABLE DIFFERENCE TO THE STANDARD MANIFOLD
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Location:
Sydney - Northern Beaches
Registered:
January 2003
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Re: 18R-C Inlet Upgrade
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Mon, 03 February 2003 11:30
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yeah, extracters do help, and it's a pritty easy mod, mine are pritty crap extracters but there still better than the standard manifold.
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Re: 18R-C Inlet Upgrade
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Mon, 03 February 2003 12:46
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Hmmm... might have to look into finding some then.
Thanks.
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