Discussion:
BR9ES vs BR9ECS
(too old to reply)
Tom Slusher
2005-12-06 04:26:10 UTC
Permalink
Does anyone know the difference in these plugs (other than $4)? My 01
MxZ800 called for BR9ES at production but then it was later switched to the
more expensive plugs.

What is the difference?
Do I really need the more expensive plugs?
And if so, what will happen if I don't use them?

Thanks,

tomslusher
Ike
2005-12-06 08:41:06 UTC
Permalink
Post by Tom Slusher
Does anyone know the difference in these plugs (other than $4)? My 01
MxZ800 called for BR9ES at production but then it was later switched to the
more expensive plugs.
Go to the NGK website-

I have an 01 700 Formula, and they still call for the BR9ES. That's all I've
ever used.
Post by Tom Slusher
What is the difference?
Do I really need the more expensive plugs?
And if so, what will happen if I don't use them?
Harrison
2005-12-07 01:47:49 UTC
Permalink
I had an '01 MxZ 800 for 4 years.

When delivered, the recommendation was BR9ES. The high. temp. light came on
1 time while idling for gas on a cool, not warm night in NY.

After the 1st year at 1636 miles, Doo updated the engine with new pistons, a
new water bottle and cap, and some DPM re-programming. After the update was
completed, BR9ECS was the recommended plug because they supposedly ran
cooler and lessened the chance of detonation and meltdown. After the
update, I never saw the high temp. light again.

By the way, the pistons had nothing to do with the update, but I had it all
done at the same time (pistons were a last minute sub. when their main
supplier Mahle had a factory fire that fall). The replacment pistons didn't
meet Doo's specs and piston slap was problem on some of them, so they
replaced all of them, including mine.

If your 800 was updated like it was supposed to be, use the BR9ECS plugs
like they recommend to minimize your chance of overheating and detonation.
--
HML, Jr.
'05 MxZ Renegade 600 HO SDI (1675 mi.)
'05 GSX 380F (132 mi.)
PA Snowmobile Safety Instructor/PA State Snowmobile Association Director
Post by Ike
Post by Tom Slusher
Does anyone know the difference in these plugs (other than $4)? My 01
MxZ800 called for BR9ES at production but then it was later switched to
the more expensive plugs.
Go to the NGK website-
I have an 01 700 Formula, and they still call for the BR9ES. That's all
I've ever used.
Post by Tom Slusher
What is the difference?
Do I really need the more expensive plugs?
And if so, what will happen if I don't use them?
Tom Slusher
2005-12-07 03:36:59 UTC
Permalink
Thanks for the responses. While I don't really like what you told me, it
all makes sense and I guess I should follow your advice. For some reason
last year and this my snowmobile started fouling plugs more than it should
and I just kept throwning plugs at it. Maybe I should find out why and use
the right plugs while I'm at it.

Again, thanks,

tomslusher
Post by Harrison
I had an '01 MxZ 800 for 4 years.
When delivered, the recommendation was BR9ES. The high. temp. light came
on 1 time while idling for gas on a cool, not warm night in NY.
After the 1st year at 1636 miles, Doo updated the engine with new pistons,
a new water bottle and cap, and some DPM re-programming. After the update
was completed, BR9ECS was the recommended plug because they supposedly ran
cooler and lessened the chance of detonation and meltdown. After the
update, I never saw the high temp. light again.
By the way, the pistons had nothing to do with the update, but I had it
all done at the same time (pistons were a last minute sub. when their main
supplier Mahle had a factory fire that fall). The replacment pistons
didn't meet Doo's specs and piston slap was problem on some of them, so
they replaced all of them, including mine.
If your 800 was updated like it was supposed to be, use the BR9ECS plugs
like they recommend to minimize your chance of overheating and detonation.
--
HML, Jr.
'05 MxZ Renegade 600 HO SDI (1675 mi.)
'05 GSX 380F (132 mi.)
PA Snowmobile Safety Instructor/PA State Snowmobile Association Director
Post by Ike
Post by Tom Slusher
Does anyone know the difference in these plugs (other than $4)? My 01
MxZ800 called for BR9ES at production but then it was later switched to
the more expensive plugs.
Go to the NGK website-
I have an 01 700 Formula, and they still call for the BR9ES. That's all
I've ever used.
Post by Tom Slusher
What is the difference?
Do I really need the more expensive plugs?
And if so, what will happen if I don't use them?
Harrison
2005-12-08 06:21:17 UTC
Permalink
Tom:

Never had any issues with mine fouling plugs. Just the overheating 1 time.

Maybe you should check with the dealer and see if your sled was updated,
although I'm not sure any of the updates that were done to mine would have
affected fouling/not fouling plugs.
--
HML, Jr.
'05 MxZ Renegade 600 HO SDI (1675 mi.)
'05 GSX 380F (132 mi.)
PA Snowmobile Safety Instructor/PA State Snowmobile Association Director
Post by Tom Slusher
Thanks for the responses. While I don't really like what you told me, it
all makes sense and I guess I should follow your advice. For some reason
last year and this my snowmobile started fouling plugs more than it should
and I just kept throwning plugs at it. Maybe I should find out why and
use the right plugs while I'm at it.
Again, thanks,
tomslusher
Post by Harrison
I had an '01 MxZ 800 for 4 years.
When delivered, the recommendation was BR9ES. The high. temp. light came
on 1 time while idling for gas on a cool, not warm night in NY.
After the 1st year at 1636 miles, Doo updated the engine with new
pistons, a new water bottle and cap, and some DPM re-programming. After
the update was completed, BR9ECS was the recommended plug because they
supposedly ran cooler and lessened the chance of detonation and meltdown.
After the update, I never saw the high temp. light again.
By the way, the pistons had nothing to do with the update, but I had it
all done at the same time (pistons were a last minute sub. when their
main supplier Mahle had a factory fire that fall). The replacment
pistons didn't meet Doo's specs and piston slap was problem on some of
them, so they replaced all of them, including mine.
If your 800 was updated like it was supposed to be, use the BR9ECS plugs
like they recommend to minimize your chance of overheating and detonation.
--
HML, Jr.
'05 MxZ Renegade 600 HO SDI (1675 mi.)
'05 GSX 380F (132 mi.)
PA Snowmobile Safety Instructor/PA State Snowmobile Association Director
Post by Ike
Post by Tom Slusher
Does anyone know the difference in these plugs (other than $4)? My 01
MxZ800 called for BR9ES at production but then it was later switched to
the more expensive plugs.
Go to the NGK website-
I have an 01 700 Formula, and they still call for the BR9ES. That's all
I've ever used.
Post by Tom Slusher
What is the difference?
Do I really need the more expensive plugs?
And if so, what will happen if I don't use them?
Dave Ward
2005-12-09 03:51:15 UTC
Permalink
What about BR9EYA plugs - what's the difference there?
Post by Harrison
Never had any issues with mine fouling plugs. Just the overheating 1 time.
Maybe you should check with the dealer and see if your sled was updated,
although I'm not sure any of the updates that were done to mine would have
affected fouling/not fouling plugs.
--
HML, Jr.
'05 MxZ Renegade 600 HO SDI (1675 mi.)
'05 GSX 380F (132 mi.)
PA Snowmobile Safety Instructor/PA State Snowmobile Association Director
Post by Tom Slusher
Thanks for the responses. While I don't really like what you told me, it
all makes sense and I guess I should follow your advice. For some reason
last year and this my snowmobile started fouling plugs more than it
should and I just kept throwning plugs at it. Maybe I should find out
why and use the right plugs while I'm at it.
Again, thanks,
tomslusher
Post by Harrison
I had an '01 MxZ 800 for 4 years.
When delivered, the recommendation was BR9ES. The high. temp. light
came on 1 time while idling for gas on a cool, not warm night in NY.
After the 1st year at 1636 miles, Doo updated the engine with new
pistons, a new water bottle and cap, and some DPM re-programming. After
the update was completed, BR9ECS was the recommended plug because they
supposedly ran cooler and lessened the chance of detonation and
meltdown. After the update, I never saw the high temp. light again.
By the way, the pistons had nothing to do with the update, but I had it
all done at the same time (pistons were a last minute sub. when their
main supplier Mahle had a factory fire that fall). The replacment
pistons didn't meet Doo's specs and piston slap was problem on some of
them, so they replaced all of them, including mine.
If your 800 was updated like it was supposed to be, use the BR9ECS plugs
like they recommend to minimize your chance of overheating and detonation.
--
HML, Jr.
'05 MxZ Renegade 600 HO SDI (1675 mi.)
'05 GSX 380F (132 mi.)
PA Snowmobile Safety Instructor/PA State Snowmobile Association Director
Post by Ike
Post by Tom Slusher
Does anyone know the difference in these plugs (other than $4)? My 01
MxZ800 called for BR9ES at production but then it was later switched
to the more expensive plugs.
Go to the NGK website-
I have an 01 700 Formula, and they still call for the BR9ES. That's all
I've ever used.
Post by Tom Slusher
What is the difference?
Do I really need the more expensive plugs?
And if so, what will happen if I don't use them?
John Wentworth
2005-12-06 12:40:16 UTC
Permalink
Post by Tom Slusher
Does anyone know the difference in these plugs (other than $4)? My 01
MxZ800 called for BR9ES at production but then it was later switched to the
more expensive plugs.
What is the difference?
Do I really need the more expensive plugs?
And if so, what will happen if I don't use them?
Thanks,
tomslusher
It appears the difference between a BR9ES and a BR9ECS is the ECS has a
"low angle ground electrode". The price difference is about $2.60 at
www.ngk.com (@2.24 versus $4.87). www.ngksparkplugs.com lists the BR9ES
as the standard plug for a 2001 MXZ 800, with the Iridium BR9EIX as the
premium plug. The BR9ECS isn't listed for that machine.

Here's a breakdown of the NGK part numbers:
http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf
John Wentworth
2005-12-06 12:49:57 UTC
Permalink
Post by John Wentworth
It appears the difference between a BR9ES and a BR9ECS is the ECS has a
"low angle ground electrode". The price difference is about $2.60 at
as the standard plug for a 2001 MXZ 800, with the Iridium BR9EIX as the
premium plug. The BR9ECS isn't listed for that machine.
http://www.ngksparkplugs.com/techinfo/spark_plugs/partnumberkey.pdf
The "low angle ground electrode" would run cooler, so if you have a
problem with overheating of the ground electrode the ECS might be the
better choice.
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