Rotax 582 Spark Plugs with Oil Injection

[Tony]

Hi Guys. What are the propper NKG Spark Plugs for Rotax 582 with Oil Injection system ?

[facthunter]

I'm not aware of any difference. Oil in fuel can lean the motor out a bit because it's more viscous with it added.  Nev

[FlyBoy1960]

17 minutes ago, facthunter said:

I'm not aware of any difference. Oil in fuel can lean the motor out a bit because it's more viscous with it added.  Nev

 

But, the oil is the same mixture whether it comes in through premix or oil injection so it is the same spark plug.

 

(in reality it is slightly different because you use less oil at lower throttle settings with oil injection but it is close enough to need/use the same spark plug)

[facthunter]

No. When it goes through the carb jets it has no oil in it. That's when the air/fuel mixture is determined..  Nev

[Thruster88]

4 hours ago, Tony said:

Hi Guys. What are the propper NKG Spark Plugs for Rotax 582 with Oil Injection system ?

BR8ES for all 582 engines. The ones with the solid steel top are the best. Aluminium tops will make conductive dust in the caps. Wade Marhlo has them at a good price. Find him on FB or see thruster flyers group downunder for the add.

[facthunter]

Why use a RESISTOR plug?  Nev

[Tony]

Received this email from Bert Flood:

 

Good morning.
There are 2 types of spark plug,dependant on model
14mm MOD 99 -897055
12mm MOD17 -297656
I hope this answers your question. 
For your reference,the illustrated parts catalogue is available to view at :-
Technical documentation | Manuals | Rotax Aircraft Engines (flyrotax.com)
Kind regards 
Adam 

 

 

[Thruster88]

 

Good to know, did not realise they had gone to 12mm threads on the final version of the 582.

[jackc]

1 hour ago, Tony said:

Received this email from Bert Flood:

 

Good morning.
There are 2 types of spark plug,dependant on model
14mm MOD 99 -897055
12mm MOD17 -297656
I hope this answers your question. 
For your reference,the illustrated parts catalogue is available to view at :-
Technical documentation | Manuals | Rotax Aircraft Engines (flyrotax.com)
Kind regards 
Adam 

 

 

My motor was one of the last ones produced as a complete assembly 2 years ago.

Edited July 27 by jackc
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[Tony]

There is a SERVICE INSTRUCTION ROTAX 

SI-2ST-010 R1

For 582 Mod 99 the approved Rotax plug is 897055; equivalent to NKG BR8ES dia 14 mm

For 582 Mod 17, with the "new" head, the approved Rotax plug is 297656, with 2 electrodes dia 12mm;  which is also approved for 912 100hp engines, the same plug !!

Because most people do not like to pay $ 55 for a single spark plug to Rotax, the NKG offered equivalent for 912 100hp as the DCPR8E

Hence, people are using the same DCPR8E in the "new" head 582 and in the 912 ULS 100hp as well.

The 912 80hp takes DCPR7E. 

 

Confused by my research ? No warrantee, welcome to Rotax !!!

 

👾😅