Banshee hp

[Jstrong]

Hey guys I’ve just finished my banshee 421 serval 4mil put it on the dyno machine and it’s only making 70 hp. I have +5 timing 35mmpwk,ported, 4 reeds,22domes pump, 150psi, 68mm pistons, running 28/1, shearers and uni filter pods. I’m trying to get 80-90. Mind you this is a fresh engine. It was basically broken on the dyno machine. Also check both of the cards today and they weren’t even synced. They were about off 1 number on both sides. Just wondering is it way I could get 10 more horsepower out of this Banshee by improving the timing? or leaning it out to 32/1.

[SKEETER]

Sounds like only way that engine gonna make over 70, is letting someone with a clue in it.    Unfortunately,  we are all out of those here

[locogato11283]

Have it ported. Where did you buy the parts?

[Jstrong]

4 minutes ago, locogato11283 said:

Have it ported. Where did you buy the parts?

It’s ported already I also don’t feel like the guy that was tuning It took his time. He said I was close already without syncing the carbs he said he could hear that they were synced already. He didn’t check the air fuel screw either. This is right after I finish the engine during the break in process. The carbs was all out of whack. I’m also leaking a little gas out of the lines when idling. Unfortunately I don’t know anyone else around me that knows how to tune a XC Banshee. I definitely feel like it has more in it. I checked the carbs myself and they weren’t synced 1 number off both sides in that’s just regular idol. Right now I’m having trouble trying to figure out how to adjust the float I’m pretty sure that’s one of problems. but they are new carburetors

[Jstrong]

1 hour ago, SKEETER said:

Sounds like only way that engine gonna make over 70, is letting someone with a clue in it.    Unfortunately,  we are all out of those here

Exactly,I definitely feel like it’s more in it

[locogato11283]

2 hours ago, Jstrong said:

It’s ported already I also don’t feel like the guy that was tuning It took his time. He said I was close already without syncing the carbs he said he could hear that they were synced already. He didn’t check the air fuel screw either. This is right after I finish the engine during the break in process. The carbs was all out of whack. I’m also leaking a little gas out of the lines when idling. Unfortunately I don’t know anyone else around me that knows how to tune a XC Banshee. I definitely feel like it has more in it. I checked the carbs myself and they weren’t synced 1 number off both sides in that’s just regular idol. Right now I’m having trouble trying to figure out how to adjust the float I’m pretty sure that’s one of problems. but they are new carburetors

Where are you located? 

[Jstrong]

Florida 

[locogato11283]

How far are you from TDR? Tony Doukas Racing.

[Jstrong]

1 hour ago, locogato11283 said:

How far are you from TDR? Tony Doukas Racing.

Not too far maybe like an hour I have never heard of him before, how is his work? 

[locogato11283]

5 minutes ago, Jstrong said:

Not too far maybe like an hour I have never heard of him before, how is his work? 

TDR has been around forever and does great work. Call them up. Tell them you got the info from BansheeHQ. See if he has a dyno. I'm pretty sure he does. He can get it tuned in for you.

https://bansheesuperstore.com/

 

[kawa110]

Hour drive is well worth a good tune.


Sent from my iPhone using Tapatalk

[specialblend07]

On 11/18/2025 at 10:31 AM, locogato11283 said:

How far are you from TDR? Tony Doukas Racing.

I forgot about this guy. Total OG in the banshee scene

[locogato11283]

I forgot about this guy. Total OG in the banshee scene

Exactly why you can’t run this place.

[specialblend07]

On 11/21/2025 at 4:02 PM, locogato11283 said:

Exactly why you can’t run this place.

 

Thx for the support

[Jstrong]

On 11/21/2025 at 5:02 PM, locogato11283 said:

Exactly why you can’t run this place.

Called. a lady answered the phone she said they are not doing tuning anymore