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Author SOHC and DOHC???
Bonus
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Registered: 13th May 02
Location: Cheltenham
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   5th Jun 03 at 17:47   View User's Profile U2U Member Reply With Quote

Just looking in my haynes manual and its going on about SOHC and DOHC engines? Im i right in thinking that stands for Single over head cam and double over head cam??? If so..... my 1.4 16v 95 sri would be the SOHC right?!

If not, then WTF?!

Cheers people!

luca2020
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Registered: 26th May 02
Location: Maidstone, Kent
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5th Jun 03 at 17:55   View User's Profile U2U Member Reply With Quote

no ur 1.4 16v will be a DOHC - double over head cam mate, same as the gsi
Bonus
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Registered: 13th May 02
Location: Cheltenham
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5th Jun 03 at 17:57   View User's Profile U2U Member Reply With Quote

ok cool, half right then!!
luca2020
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Registered: 26th May 02
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5th Jun 03 at 18:00   View User's Profile U2U Member Reply With Quote

thats why if u buy cams for DOHC cars its allways more expensive cos ur buying 2 cams and all the other bits that come with it
BabyBlade
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Registered: 5th Feb 03
Location: Hereford Rides: Ninja 600
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5th Jun 03 at 18:04   View User's Profile U2U Member Reply With Quote

thats why u wana 8valve
Bonus
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5th Jun 03 at 18:11   View User's Profile U2U Member Reply With Quote

lol
luca2020
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Registered: 26th May 02
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5th Jun 03 at 18:17   View User's Profile U2U Member Reply With Quote

tobyD
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Registered: 11th Nov 02
Location: newcastle upon tyne
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5th Jun 03 at 19:40   View User's Profile U2U Member Reply With Quote

8valves are pretty pants to be truthful.
82bhp compared to 90bhp for the 16v engines, and u can rev the 16v's a lot higher, and dont start goin on about low rev range torque coz we are only talking about a few ft/lb units. 16v DOHC's are expensive to fix but are more tunable and quicker in the long run.
animality-gt
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Registered: 23rd Jul 02
Location: Dublin,IRELAND
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5th Jun 03 at 19:51   View User's Profile U2U Member Reply With Quote

sum v8's hav quad cams and 32 valve
which is pretty impressive.

does anyone know how many valves f1 cars have?
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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5th Jun 03 at 20:12   View User's Profile U2U Member Reply With Quote

4625
Blazer
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Registered: 31st Aug 02
Location: Devon - Drives: frost blue 1.4L 8V
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6th Jun 03 at 08:38   View User's Profile U2U Member Reply With Quote

all 16v's are DOHC or Twin cam, whatever the car maker wants to call em. =]
Demo
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Registered: 27th Sep 01
Location: south wales Drives: astra sri ecoflex
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6th Jun 03 at 09:27   View User's Profile U2U Member Reply With Quote

and all DOHC engines are too big to work on in a corsa engine bay. when i did the head gasket on mine i kept thinking to myself "why didnt i just buy an 8v"
paul_spurrell
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Registered: 14th Sep 01
Location: Bath Avon
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6th Jun 03 at 11:32   View User's Profile U2U Member Reply With Quote

the corsa 1.0 12v is DOHC but with 3 cylinders instaed of four. the vectra 2.6 is quad cam and 32v
OzzySRi
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Registered: 18th Jun 02
Location: Sydney, Australia Drives: Corsa C 1.8 SRi
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6th Jun 03 at 11:37   View User's Profile U2U Member Reply With Quote

theres nothing impressive bout having quad cams on a v6 or v8. they only got quad cams coz they have two heads i.e twin cams per head per bank.
paulr202000
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Registered: 20th Jan 01
Location: Lancaster
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6th Jun 03 at 11:38   View User's Profile U2U Member Reply With Quote

no the vectra 2.6 is a V6 with four cam and 24valves if it had 32 valves u would have to have 5.3 valves per cylinder and that wont work
paul_spurrell
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Registered: 14th Sep 01
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6th Jun 03 at 11:41   View User's Profile U2U Member Reply With Quote

opps my mistake
Rob H
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Registered: 28th Oct 00
Location: Staffordshire Drives: Astra SRi
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   6th Jun 03 at 12:22   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by paulr202000
no the vectra 2.6 is a V6 with four cam and 24valves if it had 32 valves u would have to have 5.3 valves per cylinder and that wont work


Not neccesarily. You can get cars with 3 valves, and 5 valves per cylinder, like the Audi TT

quote:
all 16v's are DOHC or Twin cam, whatever the car maker wants to call em. =]


Wrong. Scoobys are 16v, but have quad cams. Also a lot of Jap engines, and my dads 2.0 4 Cyl Diesel Vectra have single over head cams, but 16 valves .




[Edited on 06-06-2003 by Rob H]
3CorsaMeal
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Registered: 11th Apr 02
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6th Jun 03 at 12:44   View User's Profile U2U Member Reply With Quote

my m8 reckons his twin cam sierra is an 8v.......i say, fcuk off u nazi ford driving pikey, go race a montego
CRB 553
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Registered: 5th Apr 02
Location: NE Drives: Punto GT
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6th Jun 03 at 13:24   View User's Profile U2U Member Reply With Quote

how is a scooby quad cam??
J100RSA
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Registered: 4th Mar 01
Location: Thornhill, West Yorkshire
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6th Jun 03 at 23:22   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by Blazer
all 16v's are DOHC or Twin cam, whatever the car maker wants to call em. =]

not true m8 can have 16v and single cam and then a rocker shaft like honda 1.6 as found in rover 200 or triumph dolomite sprint engine and yea ur m8 is rite about his sierra being an 8v and having dohc

[Edited on 06-06-2003 by J100RSA]
Adam_B
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Registered: 13th Dec 00
Location: Lancashire
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6th Jun 03 at 23:25   View User's Profile U2U Member Reply With Quote

Some one told me the new cooper s is a single cam 16v ?
Wolfy
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Registered: 1st Apr 02
Location: West Midlands
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7th Jun 03 at 02:16   View User's Profile U2U Member Reply With Quote

they told you wrong.

new minis a DOHC 16v
hell even haynes say 1.0 12v corsas are DOHC.

[Edited on 07-06-2003 by Corsa1zero]
Blazer
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Registered: 31st Aug 02
Location: Devon - Drives: frost blue 1.4L 8V
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7th Jun 03 at 04:24   View User's Profile U2U Member Reply With Quote

at the end of the day 16v's own 8v's i have a 1.4 8v spi, its nice to drive but i want more, thats why i'm getting a 2.0l 16v
Rob H
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Registered: 28th Oct 00
Location: Staffordshire Drives: Astra SRi
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7th Jun 03 at 12:39   View User's Profile U2U Member Reply With Quote

quote:
Originally posted by CRB 553
how is a scooby quad cam??


Sorry my mistake there not. They could have been though. The scoobys engines are like a "V" engine, only the angle is 180 degrees, so there flat. Because you have two banks of cylinders, you'll need two camshafts, and because there 16v i thought they might have two camshafts per bank, but they dont. They only have one camshaft, but it has 8valves on, and of course you have two of these camshafts, so yeah tere only twin cam.

(i'll also be amazed if that made sense )
animality-gt
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Registered: 23rd Jul 02
Location: Dublin,IRELAND
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7th Jun 03 at 12:52   View User's Profile U2U Member Reply With Quote

the scooby engine is called a boxter engine,same as the porshe engine.

dont 4 get people about the early push rod cams (that shud confuse things sum more)

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