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Location:
sydney
Registered:
June 2004
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18rg cylinder head airflow what cfm can it flow does anyone know
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Sat, 19 June 2004 17:38
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Hi iam new to this form frist post. Anyone know what the 18rg cylinder head airflow cfm is. Stock and race spc.What would the cfm be with 45mm inlet valves and 38.5 exe valves stage 3 port egg.With a cam lift of 0.426in 10.8mm 295 duration.
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Location:
Seattle area, USA
Registered:
June 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Mon, 28 June 2004 07:51
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| noodles wrote on Sat, 19 June 2004 10:38 |
Hi iam new to this form frist post. Anyone know what the 18rg cylinder head airflow cfm is. Stock and race spc.What would the cfm be with 45mm inlet valves and 38.5 exe valves stage 3 port egg.With a cam lift of 0.426in 10.8mm 295 duration.
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stock cams are 240 degree duration at 50thou lift. and lift is 9mm or so. stock valves are 46/38 i think so not much gain there if any. the porting would be the biggest difference i'd see.. only one way to find out have it gas flowed.
I can have heads flow benched here.. but it's $80us per hr and i'm in da states..
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Location:
Brisbane
Registered:
October 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Mon, 28 June 2004 09:21
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r u sure about the 240 deg part, my new cams are 233
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Location:
Seattle area, USA
Registered:
June 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Mon, 28 June 2004 09:34
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| Mr DOHC wrote on Mon, 28 June 2004 02:21 |
r u sure about the 240 deg part, my new cams are 233
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not for sure for sure. just going on what ive been told by other people the stock RG cams aren't that whimpy.. I suppose i could have some spec'd tho. With only a carb change and later on a better Exhaust from manifold out.. my RG had W A Y more power. the stock 40's are a choke on the power for sure..
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Mon, 28 June 2004 12:15
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TRD didnt mind the Solex's though....
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Location:
Seattle area, USA
Registered:
June 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Mon, 05 July 2004 22:53
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| THE WITZL wrote on Mon, 28 June 2004 05:15 |
TRD didnt mind the Solex's though....
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they didnt mind them? whaaa?!?!? all the writes up ive seen said they swapped to 40 or 44 "PHH" carbs or bigger and the "original Solexes" aren't rebuildable.. that was from a TRD catalog.
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Location:
Brisbane
Registered:
October 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Wed, 07 July 2004 09:47
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| wil8115 wrote on Tue, 06 July 2004 08:53 |
| THE WITZL wrote on Mon, 28 June 2004 05:15 |
TRD didnt mind the Solex's though....
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they didnt mind them? whaaa?!?!? all the writes up ive seen said they swapped to 40 or 44 "PHH" carbs or bigger and the "original Solexes" aren't rebuildable.. that was from a TRD catalog.
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odd... i got mine rebuilt
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Location:
Gold Coast
Registered:
October 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Thu, 08 July 2004 02:34
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i think by non rebuildable they mean most parts are fixed except for main and slow jets.
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Location:
Seattle area, USA
Registered:
June 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Thu, 08 July 2004 09:01
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| Mr DOHC wrote on Wed, 07 July 2004 02:47 |
| wil8115 wrote on Tue, 06 July 2004 08:53 |
| THE WITZL wrote on Mon, 28 June 2004 05:15 |
TRD didnt mind the Solex's though....
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they didnt mind them? whaaa?!?!? all the writes up ive seen said they swapped to 40 or 44 "PHH" carbs or bigger and the "original Solexes" aren't rebuildable.. that was from a TRD catalog.
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odd... i got mine rebuilt
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Not all weren't rebuildable just the early ones(
"original solexes") but a phh will out perform it..
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Location:
Brisbane
Registered:
October 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Thu, 08 July 2004 10:10
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maybe they meant they wrent worth rebuilding
useless POS's 
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Location:
Seattle area, USA
Registered:
June 2002
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Re: 18rg cylinder head airflow what cfm can it flow does anyone know
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Thu, 08 July 2004 10:23
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| Mr DOHC wrote on Thu, 08 July 2004 03:10 |
maybe they meant they wrent worth rebuilding
useless POS's
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LOL actually for the later ones i can get rebuild kits for under $100us for the pair.
the early ones are good paper weights..
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