Plugs?

[FlightPlanDan]

May seem like a newbie question, but I was just about to buy a box of plugs and realized that I'm changing out my head next week. (and I don't know what plugs I'll need!)
I'm currently running br8es in an older a/m head.
Getting an ADA for a 701 w/ average bolt-ons. 33cc domes, approx 200 psi comp.

Also, will it be prudent to richen the gas/oil mix? Going from 185 & 40:1 to 200 & ????
Still gonna run 93 octane pump gas.

Thanx all.
Dan

 

[5810]

br8es

 

[Penken]

more oil = lowers octan.
and ADA heads use "es" long thread plugs.

 

[FlightPlanDan]

That's what I thought, but it never hurts to get confirmation!
Thanx All.

 

[restosud]

200psi and 93 oct?hmmmmm!

 

[vitaly]

br8es

 

[FlightPlanDan]

200psi and 93 oct?hmmmmm!

Yea... I know.... But I have the assurance of a very good engine builder that it will work.
I thought 190 plus needed special fuel.
But I'm no expert. I'm gonna see what happens.

Unless somebody can tell why I should go with 35cc domes vs. 33 cc. I mean, given the choice, wouldn't you go for the higher compression?

chime in!

 

[Aircraftsalz]

More compression will help with that snap right off the bottom end. Just don't be out holding it WOT all the way to the ride spot.

You need to buy a EPIC now, you would be very happy!

 

[FlightPlanDan]

More compression will help with that snap right off the bottom end. Just don't be out holding it WOT all the way to the ride spot.

You need to buy a EPIC now, you would be very happy!

You're right! Food is over-rated anyway......my family will understand, I'm sure. After all, it's my passion! you wouldn't mess with a man's passion, would you?
I've been wathching your thread... For your motor...yes, for sure.
I'm on a quest. A noble search for the most performance possible from a 701 (prior to port & polish). With a soaked sj hull.
I may not find it. But I will surely pester all members of the x in my conquest!

The important part is that something is learned with every change.
AFter I spend as much as an xs 1000 would have cost, I'll admit defeat.









I'm close.

 

[FlightRisk]

EPIC is the best money I've spent in a long time.... and no, it's not just for the 1000cc motors.
My ski is just a 701 w/ a b pipe and ada head.

 

[Matt_E]

I run 200 psi with 50:1 oil mix, FYI.

BR8ES are the right plugs.

 

[SurferSmurf]

i ran 200psi for a bit and i cut it back to 185psi. i never felt a differance enough from 185 to 200 to justify the extra strain on the motor nor the delema of what fuel to run. i say drop the compresion a bit. just my 2cents.

 

[McDog]

bpr8es work great too but you can't get them in solid top. They are a little longer than br8es and will put the spark more in the middle of the chamber.

 

[Freakrider]

You can run B8es which are non-resistor solid top ones you get at Advance Auto for 1.99 each.