spark plugs: intake or exhaust?
neokyle
Hi. I was going to replace the spark plugs in my car, but I'm a little
confused. Apparently I need 8 plugs: 4 for the exhaust and 4 for the
intake. The problem is I don't know which is which. Are the sparks plugs
in the front of the engine the exhaust or the intake? Any help would be
greatly appreciated!
Thanks,
Kyle
Robert Baird
located on the exhaust manifold side, thus the tricky names.:-) On your
vehicle the exhaust is on the front, or the side closest to the grill, and
the intake is located on the rear, or the side closest to the firewall.
neokyle <ky...@louisville.edu> wrote in message
news:9cnq9p$29hq$1...@news.louisville.edu...
Posted from NetWORLD Connections, Inc.
Daniel B. Martin
Nissan made many four-cylinder engines which had eight spark plugs.
Daniel B. Martin
Nissan owner and D-I-Y mechanic
Peter Hill
Are they 2 or 4 valve?
I can see the advantage of twin plugs on a 2 valve motor as a single
plug has to be offset giving a long flame path to the other side. I
can see no reason for a 4 valve motor to be twin plug unless required
by regulations e.g. aircraft.
If 4 valve are the plugs between the inlet and exhaust, one centered
one offset,
I I
p p
E E
or both offset,
I I
p p
E E
or is one between the inlet valves and the other between the exhaust
valves offset to the cylinder wall which how it read to me. Do they
go in from the top and split the ports or from the side under the
ports like a R-R Merlin?
I p I
E p E
How are the ports arranged - I have heard of some 4 valve motors with
alternate inlet and exhaust valves to give a more even heat
distribution :-
I E I E I E I E
E I E I E I E I
--
Peter Hill
Can of worms - what every fisherman wants.
Can of worms - what every PC owner gets!
Daniel B. Martin
Two valves per cylinder, at least on the models I am familiar with.
David L. Beem
> [snip] I can see no reason for a 4 valve motor to be
> twin plug unless required by regulations e.g. aircraft.
gases.
David
Da...@gilanet.com
neokyle
-Kyle
"Robert Baird" <rw...@networld.com> wrote in message
news:3aef7aee$1...@nntp.networld.com...
Scott McGarry
The spark plugs are all the same...it is just that your engine has 2 per
cylinder. They shouldn't be called "intake plugs" or "exhaust plugs", but
this is an easy way to describe the approximate location of them. Just do
them all, no matter what they are called!
Daniel B. Martin
> has 2 per cylinder. They shouldn't be called "intake plugs"
> or "exhaust plugs", but this is an easy way to describe the
> approximate location of them. Just do them all, no matter
> what they are called!
This is incorrect, at least for some 8-plug 4-cylinder Nissan engines.
Examples:
'87 Stanza, intake side BCPR6ES-11, exhaust side BCPR5ES-11
'84 pickup, intake side BPRS6ES, exhaust side BPRS5ES
Aviatrman
Heat Range?
ect: Re: spark plugs: intake or exhaust?
>From: "Daniel B. Martin" daniel88...@juno88.com
>Date: 5/3/2001 5:56 AM Eastern Daylight Time
>Message-id: <9crke2$1atq$1...@newssvr06-en0.news.prodigy.com>
Not All who Wander are Lost.
Daniel B. Martin
> Heat Range?
Yes. The intake side plugs are one step colder than the exhaust side
plugs.
Bob Crockett
_mere_ $2,100, and almost three weeks at the shop. So I
went to an alignment shop and the guy told me I need new
ball joints. He showed me the looseness by moving the wheel
while the front of the truck was supported by the lower
control arms, just below and in front of the ball joints.
Don't I recall this as an _old_ trick to sell ball
joints??? Or am I about to go end over end at a high rate
of speed if I don't spend a few hundred more $$$ with this
guy???
--
People are like stained glass windows: they sparkle and
shine when the sun
is out, but when the darkness sets in their true beauty is
revealed only if
there is a light within. -Elizabeth Kubler-Ross,
psychiatrist and author
(1926- )
Scott McGarry
"Daniel B. Martin" <daniel88...@juno88.com> wrote in message
news:9crke2$1atq$1...@newssvr06-en0.news.prodigy.com...
> This is incorrect, at least for some 8-plug 4-cylinder Nissan engines.
> Examples:
> '87 Stanza, intake side BCPR6ES-11, exhaust side BCPR5ES-11
> '84 pickup, intake side BPRS6ES, exhaust side BPRS5ES
>
Wow! I didn't know.
The Naps Z engines here in Aus didn't specify different plugs on each side,
from memory.
ooops
NBR