Thanks To Carl's/Struthers!

[ElectroTech]

I had my 09 Assault with Carl's/Struthers full cylinder/case porting, head cut (30%) ECU re-flash, SLP Twin Pipes and the new Camo Extreme 15" X 146" X 2.5" out for its maiden voyage, all I can say is WOW. This thing rips, I was pulling 8600 at 6000 feet with 64 gram BB weights(2G heavier than Jacks Recommendations), lime green primary, 64/42.46 helix w/delrins and spacer washer to shorten initial angle and raise pre-load a little, a little higher than target but I will bring it down by loading it a little with the other cut on the helix (64/44 .46). I could hold my hand to either clutch after a long pull. These guys do phenomenal work and I give my recommendations to anyone to use their set-ups.

Big thanks to Chris and Jack at Carl's for getting me set-up and answering all my questions!!

A couple of tips,

Flip the ex-valve solenoid for better clearance (T15 Torx)

Trim out the opening at the air plenum/air horn, I just used a razor knife after I had it riveted

Pull the engine instead of the jug, that way you can slot your motor straps for allignment as well as not have to worry about getting junk in the motor, and it will take less time

Buy a roll of reflective tape, and use as much as you can in conjunction with SLPs awesome fiber heat tape

Be careful when you trim the shock tower, if you get it right you will not have to use silicone and you will have a nice little heat sink that is exposed to snow spray all the time helping heat issues where the support bracked sits on the fender

Getting the glue warm from the backside helps remove the foam

For anyone who is drilling holes in the air box, use a torch to hot up a thinwalled pipe or your holesaw, sink it through the shelf and voila, a nice clean hole with no shavings in the box

I sealed the air box with gorrilla tape, helps keep the belt dust and other various things that tend to get in there out

 

[thefullmonte]

Looks like you went all out. Awesome to hear it is working great for you. I've been reading on here that those tracks make all the difference in the world. What did you think of it compared to stock?

 

[crf118r]

So porting and polishing are good it sounds like, and that's what I thought I remembered from my high school hot rod days, but my father-in-law (who is not a motorhead) thinks that wouldn't help and may even be worse for fuel atomization. So what exactly is the benefit? More of a smooth straight line to the cylinders? A stock "rough" plenum seems to make more sense for atomization, but I know this isn't the case. Input please!

 

[jols]

I had my 09 Assault with Carl's/Struthers full cylinder/case porting, head cut (30%) ECU re-flash, SLP Twin Pipes and the new Camo Extreme 15" X 146" X 2.5" out for its maiden voyage, all I can say is WOW. This thing rips, I was pulling 8600 at 6000 feet with 64 gram BB weights, lime green primary, 64/42.46 helix, a little higher than target but I will bring it down by loading it a little with the other cut on the helix (64/44 .46). I could hold my hand to either clutch after a long pull. These guys do phenomenal work and I give my recommendations to anyone to use their set-ups.

Big thanks to Chris and Jack at Carl's for getting me set-up and answering all my questions!!

Did you have to drop and roll?... any clearence issues with the track at all?

 

[dowhatiwant]

Interested in hearing how the track compared to the other one too?

 

[MNSLEDNECK56308]

^^^You don't HAVE to do the drop and roll, it fits but barely! Camo ext is a much better overall track than the stock comp. track.

 

[440dart]

its not much better its way better even with the clearence issue its 10 times better for deep snow with drop and roll would only make it better

 

[440dart]

if you can twins before you will love these not very finiky at all

 

[Ron]

So porting and polishing are good it sounds like, and that's what I thought I remembered from my high school hot rod days, but my father-in-law (who is not a motorhead) thinks that wouldn't help and may even be worse for fuel atomization. So what exactly is the benefit? More of a smooth straight line to the cylinders? A stock "rough" plenum seems to make more sense for atomization, but I know this isn't the case. Input please!

Porting can also change the exhaust port height and size of the ports. It's not all about fuel. The improvement in flow-air, fuel, or exhaust increases efficiency so it adds power.
Edit-If atomization is an issue it's more than overcome by improved flow-porting always helps if done correctly. With injectors there may be some increased atomization from the injector spraying into moving intake air.

 

[paulw22]

Awesome sled, nicest I have ever rode. Seen it pull right to rocks with a new 800 154" doo and a 1000 162" doo. I guess the only difference was the Assault was the fastest up the hill. Cuddos on the clean install and fine "arts and craft" work.

 

[ElectroTech]

The extreme track works alot better than stock. Improvements over the stock track are drastic. Deep snow it is soooo much better, downhills are much more controled, hard packed very similar to stock, trenching drastically reduced as well. On an Assault I think the track is a must do for deep snow riding. As for comparisson to the Series 5.1 I can't really say never ridden side by side.
All riding was with front track shock layed down, and limiters pulled all the way up to control ski lift and improve over transfer (ie: my sled doesn't wheelie unless I wan't it to).

 

[ElectroTech]

Gonna try it out at home tomorrow (2000ft), 50/50 mix in the tank, 68G BBs and 64/44 .46, hopefully that keeps the revs down. 4 grams and 2degrees steeper and 4000 feet less altitude hope it gives me 84-8500.

 

[ElectroTech]

Update,
Today with 50/50 in the tank, 68G BBs and 64/44 .46, it pulled and held 8450, and hit 76MPH(speedo) in about 600 Feet, wash looked good, from what I could see, plugs nice. Driveability was awesome, I would love to try this with the 1 3/8 cobra track and some tall gears, boy that would be scary fast.

 

[ElectroTech]

Bump for pics added