| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 977.1 | C= Copper core | JANUS::EDWARDS | Brian Edwards, Reading, UK | Thu Mar 08 1990 12:59 | 5 |
| It's about three years since I last bought any but you should find N9YC is
what you want, if memory serves me correctly. They added the C to indicate a
change to a copper core. Heat range and reach coding remains the same.
Brian
|
| 977.2 | | ANNECY::MATTHEWS | M+M Enterprises. Thats the CATCH | Thu Mar 08 1990 14:28 | 7 |
| Thanks Brian. I did notice these, but the socket size is different !!!
The reach is fine, the size is fine, but I haven't got a plug socket
to fit ...
What is the copper core all about anyway ???
Mark
|
| 977.3 | Search me | JANUS::EDWARDS | Brian Edwards, Reading, UK | Thu Mar 08 1990 17:18 | 6 |
| Sorry Mark, I can't help here. They came out with all the right marketing
phrases, such as "Better spark" and "Longer life" but since I don't know what
the core material was originally, I can't even guess at why they should be
better.
Brian
|
| 977.4 | | UKCSSE::RDAVIES | Live long and prosper | Thu Mar 08 1990 20:39 | 4 |
| I think the copper is supposed to take away the heat more quickly thus
letting it run cooler.
Richard
|
| 977.5 | | ANNECY::MATTHEWS | M+M Enterprises. Thats the CATCH | Thu Mar 08 1990 20:46 | 8 |
| How does this all relate to "hotter" and "colder" plugs ???
With the N9Y and N7Y champions, one is "hotter" than the other.
Don't know what this means, but do know that for some racing
engines, they are started with one type of plug until the engine
is hot, and then the plugs are replaced with a different type.
Mark
|
| 977.6 | Hot And Cold. | KERNEL::ADAMS | Venus on Remote Control | Tue Mar 20 1990 09:22 | 17 |
|
For each "spec" of plug, i.e Reach/Thread/Taper etc there are
Hot and Cold variants, and some in between. Basically the "Cold"
plugs are for High performance engines, which naturally run Hot.
The Hot plugs are for low performance engines, which normally
run colder. The actual plugs have a different shaped "nose",(the
bit that holds the centre electrode. Hot plugs are less effective
at spreading the heat, to the rest of the cylinder block and are
therefore more "self-cleaning" than cold ones. Using Cold plugs
in a low performance engine will result in a rapid build-up of
carbon on the plug and consequent mis-firing.These Cold plugs
are so called because their construction causes more rapid heat
dissipation in a high performance engine.
I have a list at home (somewhat out of date) that lists ranges
of plugs and equivalents from different manufacturers, if you
want more info.
|
| 977.7 | Some equivalents. | KERNEL::ADAMS | Venus on Remote Control | Wed Mar 21 1990 02:55 | 22 |
| 977.8 | | ANNECY::MATTHEWS | M+M Enterprises. Thats the CATCH | Wed Mar 21 1990 11:39 | 4 |
| ... now that IS the sort of information I've been looking for.
Perhaps now I can get the right plugs for the beast ..
Thanks, Mark
|
| 977.9 | Plugs? Spark Plugs? Out of the Ark aren't they? 8^) | SUBURB::POWELLM | Nostalgia isn't what it used to be! | Tue Mar 02 1993 20:22 | 1 |
|
|
| 977.10 | | ESBS01::RUTTER | Rut The Nut | Tue Mar 02 1993 21:05 | 7
|