TRX250r.org

Author Topic: Spark plugs  (Read 1678 times)

Offline brad luna

Spark plugs
« on: July 25, 2020, 04:00:46 PM »
I have an 86 bottom end and a 89 cylinder. Which NGK plug should I run  a br8es or br9es?

Offline The norm

Re: Spark plugs
« Reply #1 on: July 25, 2020, 04:15:17 PM »
I run b8es...
1986 Trx250r-- Hybrid Engineering 391(Good bye super 310)
1986 Trx250r-- Hybrid Engineering  ported stock 86 cylinder
1986 Trx250r-- craigslist engine with unknown ported 89 cylinder.
1985 Atc250r-- Needs a lot of work (Super 310's new home)

Offline brad luna

Re: Spark plugs
« Reply #2 on: July 25, 2020, 04:38:38 PM »
U run br8es with 89 cylinder,  I thought 89's run the cooler plug ?

Offline The norm

Re: Spark plugs
« Reply #3 on: July 25, 2020, 04:46:05 PM »
I use the b8es not the br8es. No resistor. I use the same plug in every R I have.
1986 Trx250r-- Hybrid Engineering 391(Good bye super 310)
1986 Trx250r-- Hybrid Engineering  ported stock 86 cylinder
1986 Trx250r-- craigslist engine with unknown ported 89 cylinder.
1985 Atc250r-- Needs a lot of work (Super 310's new home)

Offline broken1

Re: Spark plugs
« Reply #4 on: July 25, 2020, 05:06:30 PM »
I run the same B8ES non resistor plugs gapped at .019" in both my R's. One has a short rod crank & 86 cylinder & one has a long rod crank & an 89 cylinder. Both have 86 cases & tranny's.

 

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