Help! Need More power for the dunes. Has anyone hopped up their Trailblazer? What did you do, How much, and what was the result?

 

http://www.hpd-inc.com
http://www.rittercycle.com

 

My neighbor had a stock TrailBlazer, he added an HPD pipe/silencer, and a Uni air filter. The difference is amazing.

 

Call HPD and ask them about the complete kit for the TB, it's like $810 to do all the following (from memory):

Pipe
Aggressive Clutch
Mill Head
Bore and Add Wiseco
Port
Remove Oil Pump

Then add a 35mm carb or an old one from a Scram and it supposed to go from 22 to 36 hp. Sounds like a decent deal to me.

 

I'm having to rebuild my P.O.S. trail blazer this week end. I'm getting a weisco piston and bored out alittle bit. I can't rememeber hopw much im getting it bored out but it's not a lot. BUT, i was wandering how much extra horsepower i will get from that piston??? If you want to know it has only 70 P.S.I. at sea level. When we get it back we are selling it as soon as possible. I will never buy a polaris again, i have had problems with it since the day i got it. Later guys, Kenny

 

I have pretty good amount done to mine it runs out good

 

so if i put an old srambler carb in my trail blazer would it add more power?if so how much?

 

As I understand it you should see 3-4 hp and some added top end by doing it. But I personally wouldnt consider the bigger carb without porting, boring and doing head work. I just can't see pouring more fuel into the engine without helping it flow and compress it better. But it can be done without doing anything else. I don't know what the price would be, if you find someone who just replaced the carb on there scram and doesn't have a use for the old one you might do ok, but if could cost you up to $200 I'm guessing.

 

i would reccomend hpd speed kit mine was 425 it gave it 8 horsepower anh 5 mph

 

I have a lightly modified Trailblazer. I put an RCR top end pipe and silencer, a 34 mm carb from my Sport with U.F.O. on the slide, an RCR primary spring, a K&N air filter and went down to a 38 tooth sprocket in the rear (stock 42 tooth). Granted it isn't as fast or as quick as my Sport is now, but it would give it a run for the money stock. It will actually wheelie now as opposed to not wheeling in stock trim. There is a little more power there and if I would have kept the stock sprocket it probably would have wheelied every time I gave it gas. My main objective was to make the machine faster so Celeste could keep up with me. But to make it faster (gearing change) I needed more power so it would still climb hills the way it used to. I did get the performance I wanted out of it without major modification to the engine or machine.