Powderfreak Head

dragonweld28

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I sold a clutch kit to a guy in Sicamous that had the head and jaws pipe. It required 3.9 grams more ramp wieght than what i suggest for a stock 850. Thats making some good power.
 

Topgun

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Has Duane fixed this problem with the head cracking yet? I know the head works as Ive seen it first hand but dont wanna have any issues.
 

tex78

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I've heard of a few motors going bad too with head on

Mabe it's too much
 

SicLoco

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Nope! Its good! Mines been running wide open for quite a while now. Head cracking I believe was early production of 800"s
 

PipeKing

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I have the head and pipe kit in mine with 750kms on it. Overall the clutching has improved, now the power? Not overly impressed. I've done multiple pokes up chutes and ride 4000-9000 ft and I don't see where the major difference is vs stock. Not sure if I would recommend this product.
 

Caper11

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I have the head and pipe kit in mine with 750kms on it. Overall the clutching has improved, now the power? Not overly impressed. I've done multiple pokes up chutes and ride 4000-9000 ft and I don't see where the major difference is vs stock. Not sure if I would recommend this product.

What head comp ratio, and what elevation pipe?
 

SicLoco

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I have the head and pipe kit in mine with 750kms on it. Overall the clutching has improved, now the power? Not overly impressed. I've done multiple pokes up chutes and ride 4000-9000 ft and I don't see where the major difference is vs stock. Not sure if I would recommend this product.

So you've added roughly 25 hp which you cant feel but your clutching has improved?? The dyno doesnt lie! ( much)
 

NoBrakes!

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Is there a dyno sheet with this head and pipe combo? I've yet to see one....
 

SicLoco

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25hp i dont think so. you might get 5 with that combo
I got a dyno sheet with mine and just the head added 10hp so add the pipe on top of that it might not be 25hp but it certainly isnt 5hp !! add it up
 

NoBrakes!

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I just thought it would have been posted by now, people have been talking about this pipe and head combo for 3 years...
 

Caper11

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Depending on head compression choice, (3 available)pipe elevation choice. Results, reliability and HP output will vary.
 
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