Porting Head on 09 Nytro

[86blackt]

I am getting ready to supercharge my Nytro. While I have it apart; is there any real gains in porting the head or is factory pretty good?
Thanks
Rich

 

[shadow44]

PM Dave Marshall from HURRICANE Perf...he says head porting can gain 8-10hp in the right application.

 

[Tarzan]

I am getting ready to supercharge my Nytro. While I have it apart; is there any real gains in porting the head or is factory pretty good?
Thanks
Rich

I think you can get about ca10-15 hp in porting a stock engine so when you boost it you get 20- 30 hp if it`s done right.
And a good cam timing you can get a funny engine and a nice Nytro to ride

 

[86blackt]

Talking to a few guys they are saying that porting is going to make sled extremely finnicky...Any thoughts??

 

[nytroman20]

Did it to mine and no problems so far

 

[86blackt]

Getting ready to bolt on MPI stage 2 blower and they said under high boost will be more of a PIA to tune

 

[Ruckus]

Did it to mine and no problems so far

And gains?

 

[86blackt]

I was told there are signifigant gains as stated; if done properly

 

[shadow44]

Getting ready to bolt on MPI stage 2 blower and they said under high boost will be more of a PIA to tune

That's why I recommend you talk to Dave Marshall @ HURRICANE Performance...he knows boost and porting and how to tune properly...his speed run sled is making 600+hp safely..the man knows how to tune, surely he can set you up!

 

[86blackt]

I appreciate that and I Emailed him. Bad side to that is I live in Maryland

 

[nytroman20]

It's hard to say if I got gains from the porting cause I planed the heads while I had it off. I'm still running the stock airbox and I only gutted my stock exhaust...

 

[nate007]

There's opinions both ways, I've heard there are good gains, and I've heard other builders say it doesn't do much and not worth the time. Dyno numbers are so subjective, and only good for the guy whos running the dyno, and once you're back out on the trail, you may never even notice the difference.
In my opinion, I think you'd gain more noticable power by having the engine balanced and blueprinted. Anybdy whos ever had a good balanced motor will tell you it makes all the difference in the world, and easier to tune, feels like a whole different motor, etc,. Let's face it, there are strong running sleds out of the box, and not-so strong. Most small gains in power can easily go un-noticed by weather conditions, snow conditions, fuel, belts, that extra cheeseburger, etc...
Porting the head on an otherwise stock motor is probably not cost effective unless it's in conjunction with other upgrades.

 

[09nytro]

Remember if you bring more air & fuel in you need to get it out just like nate said have to do all the mods

 

[shadow44]

There's opinions both ways, I've heard there are good gains, and I've heard other builders say it doesn't do much and not worth the time. Dyno numbers are so subjective, and only good for the guy whos running the dyno, and once you're back out on the trail, you may never even notice the difference.
In my opinion, I think you'd gain more noticable power by having the engine balanced and blueprinted. Anybdy whos ever had a good balanced motor will tell you it makes all the difference in the world, and easier to tune, feels like a whole different motor, etc,. Let's face it, there are strong running sleds out of the box, and not-so strong. Most small gains in power can easily go un-noticed by weather conditions, snow conditions, fuel, belts, that extra cheeseburger, etc...
Porting the head on an otherwise stock motor is probably not cost effective unless it's in conjunction with other upgrades.

Exactly....IMO there is no point porting a head unless you are going compliment with intake and exhaust mods to take advantage of the better flowing head....you really have to ask yourself what you want out of the sled...with my mods I'm already 15hp better than stock and can gain 4 more HP by taking the DB reducer out...so for shats n giggles we'll say Im at 150 hp...add porting and I'm 160ish hp....for around $3000 all said and done...may as well get a turbo kit for $2G more and be at 180hp...or for $1700 just go the bolt on route, gain 15hp and you don't have to do any engine work which means less hassle in the end.

 

[nate007]

There are plenty of people here who will tell you that dyno numbers and claims of certain gains for certain parts really don't amount to much in real situations. What is tested on one machine (or several) isn't always going to return that same results on every sled. Dyno testing is only good for the guy running the dyno and making the mods, but remember - a dyno is a controlled environment, and unless it's done on the side of the trail in freezing conditions, it's not likely to give the same numbers.
Now before I get jumped for my comments, I must say, I do own a speed shop, and mod cars all the time. That being said, I do think a dyno is one of the best tuning tools out there, but it's never going to take the place of just putting mileage on. You may see a certain gain for a certain part over a baseline run, and can even tune for steady state running, or various acceleration or deceleration scenarios, but there's always a hickup somewhere when driving on the road...