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Author 16valve engines
Ditch
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Registered: 29th Nov 02
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14th Jan 04 at 15:08   View User's Profile U2U Member Reply With Quote
I was under the impression that only 8valves were used untill a certian rpm and then in come the other 8...... thus giving a different power delivery to an 8valve lump


am i talking gibberish??
broster
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14th Jan 04 at 15:10   View Garage View User's Profile U2U Member Reply With Quote
yeah
bradfincham
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14th Jan 04 at 15:12   View User's Profile U2U Member Reply With Quote
16 valve means 4 valves per cylinder on a 4 cylinder engine,
that 2 for inlet and 2 for exhaust on each cylinder
meaning fuel and air gets into the cylinder much faster

correct me if im wrong here people please
Ditch
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14th Jan 04 at 15:12   View User's Profile U2U Member Reply With Quote
get out of here you!

I wana second opinion!
yzf-r6 (stella Man)
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14th Jan 04 at 15:12   View User's Profile U2U Member Reply With Quote
hes right
broster
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14th Jan 04 at 15:13   View Garage View User's Profile U2U Member Reply With Quote
lol, ok ok, ill leave now..................bye
AK
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14th Jan 04 at 15:13   View User's Profile U2U Member Reply With Quote
very much so..... talking gibberish

You've been listening to stories about 16v V'tecs etcs
Ditch
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14th Jan 04 at 15:14   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by bradfincham
16 valve means 4 valves per cylinder on a 4 cylinder engine,
that 2 for inlet and 2 for exhaust on each cylinder
meaning fuel and air gets into the cylinder much faster

correct me if im wrong here people please




yeah thats all correct, but i thought only one inlet valve and one exuahst valve were used untill say 3,500rpm...... when in come the other 8....

certainly feels that way on my fester, you get an obvious power hike above 3.5thousand revs

someone clear this up for me pleeeease
Ditch
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14th Jan 04 at 15:15   View User's Profile U2U Member Reply With Quote
cheers AK..... and broster for telling me that in the first place
broster
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14th Jan 04 at 15:15   View Garage View User's Profile U2U Member Reply With Quote
lol, shuda believed me!!!!!!!!!!!!!
Ditch
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14th Jan 04 at 15:18   View User's Profile U2U Member Reply With Quote
not that i didnt believe.... was uncertain
broster
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14th Jan 04 at 15:18   View Garage View User's Profile U2U Member Reply With Quote
LOL, OK OK ill believe you
Ditch
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14th Jan 04 at 15:20   View User's Profile U2U Member Reply With Quote
so someone explain the power delivery to me then? why doesnt it feel as pokey as an 8valve car low down in the revs
Ditch
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14th Jan 04 at 15:21   View User's Profile U2U Member Reply With Quote
sorry i will re-word that.....

why doesnt it feel MORE nippy low down.......
J4MIE P
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14th Jan 04 at 15:21   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by bradfincham
16 valve means 4 valves per cylinder on a 4 cylinder engine,
that 2 for inlet and 2 for exhaust on each cylinder
meaning fuel and air gets into the cylinder much faster

correct me if im wrong here people please


Gambit
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14th Jan 04 at 15:21   View User's Profile U2U Member Reply With Quote
second throttle body opening at 4krpm allowing more airflow

well thats what happends on mine, or soemthing like that

[Edited on 14-01-2004 by Gambit]
Ditch
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14th Jan 04 at 15:23   View User's Profile U2U Member Reply With Quote
second throttle body
J4MIE P
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14th Jan 04 at 15:23   View User's Profile U2U Member Reply With Quote
8v do tend to have thier power lower down the range so what you are saying is normal
Gambit
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14th Jan 04 at 15:25   View User's Profile U2U Member Reply With Quote
two hole, one works constantly, 2nd opens on 3/4 - full throttle
Rob H
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14th Jan 04 at 15:28   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by Gambit
two hole, one works constantly, 2nd opens on 3/4 - full throttle


That sounds more like how Twin webers work too me
broster
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14th Jan 04 at 15:29   View Garage View User's Profile U2U Member Reply With Quote
same here!
Gambit
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14th Jan 04 at 15:39   View User's Profile U2U Member Reply With Quote
ill see if i can dig a pic out to show you what i mean
Ditch
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14th Jan 04 at 15:42   View User's Profile U2U Member Reply With Quote
quote:
Originally posted by J4MIE P
8v do tend to have thier power lower down the range so what you are saying is normal


but what im asking is why doesnt a 16valve engine have even better acceleration low down than an 8valve?
broster
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14th Jan 04 at 15:43   View Garage View User's Profile U2U Member Reply With Quote
the 1.4 16v has more power low dow nthat the 1.4 8v! but the 16v engines are happier to be reved than a 8v
DangerousDave16v
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14th Jan 04 at 15:44   View User's Profile U2U Member Reply With Quote
"taxi"

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