Exhaust and minor mods versus cylinder head change out?

[Rocket3Pilot]

So while we're on it, and hope I'm not changing the thread, does anyone make or regrind cams for these engines? Can you tell I'm old school? I'm aware of carpenter's packages, and they are very compelling indeed, but I'm just wondering If you can specify a cam with slightly more lift but mostly longer duration. I'd like it to breathe more in the midrange vs the top end. Seems like the cams are relatively accessible and would be another big gain vs cost for HP without needing to crack the head?

 

[Tripps]

I think Carpenter has access to various cams, Art (Imfastoo) would know.

 

[Steel]

Thanks Steel. Impressive numbers. Do any of these dyno runs show power readings starting as low as 1500 or 2000 rpm ?

Something doesn't look right with that chart?

That's a huge flat spot from 4,200 rpm's up to 4,700 rpm's? I would think that would be very noticeable driving.

The other is that the chart only starts at just under 4,000rpm's and indicates like 65HP?

Is this just the resolution of the dyno and the way they ran it, because that doesn't look very drivable to me?

I'm very interested in the Carpenter mods but not if you have to be reving it like that to get the advantage? Hope I'm just misreading it.

Dyno charts are generally run in 4th gear, so I couldn't see any reason to be below 2000 rpms. I'd be curious to see it from about 2500 on up, since that's about as low as I'd roll on from. Unless I'm racing, then I'd drop a gear to get my rpms closer to the powerband.
Low end power in 1st is enough to easily take a 1000cc sport bike off the line, and a 2nd gear roll on at 50 or 70 leaves them behind too.


As for the dip from 4200-4700 rpms, my but dyno doesn't register it. It passes through the rpms so fast I barely have time to get my foot on the peg to shift into 2nd. Also I'm told that is where Bob rolls harder on the throttle, so there is a slight vacuum drop. So it may not be there with a steady roll of the throttle.

i wish I could get a dyno for mine but no one in my vicinity so far. I think probably what I'm looking for is more low end grunt or torque. Does any one have a dyno chart for a stock roadster to compare it too?

If you just want more low end power you can save a lot of money, and just get better intake with CES pipes and a custom tune.

 

[IMFASTTOO]

So while we're on it, and hope I'm not changing the thread, does anyone make or regrind cams for these engines? Can you tell I'm old school? I'm aware of carpenter's packages, and they are very compelling indeed, but I'm just wondering If you can specify a cam with slightly more lift but mostly longer duration. I'd like it to breathe more in the midrange vs the top end. Seems like the cams are relatively accessible and would be another big gain vs cost for HP without needing to crack the head?

We have a selection of cams but the stock engine makes plenty of low and midrange

So while we're on it, and hope I'm not changing the thread, does anyone make or regrind cams for these engines? Can you tell I'm old school? I'm aware of carpenter's packages, and they are very compelling indeed, but I'm just wondering If you can specify a cam with slightly more lift but mostly longer duration. I'd like it to breathe more in the midrange vs the top end. Seems like the cams are relatively accessible and would be another big gain vs cost for HP without needing to crack the head?

we have a large selection of cams we have our favorites that make the most power THE stock ROCKETS make great low and midrange power what they need is a power boost on the top end

power

 

[IMFASTTOO]

i wish I could get a dyno for mine but no one in my vicinity so far. I think probably what I'm looking for is more low end grunt or torque. Does any one have a dyno chart for a stock roadster to compare it too?

THE stock Rocket has all the lowend grunt you need no point in adding more thats not going to win any races

 

[IMFASTTOO]

So while we're on it, and hope I'm not changing the thread, does anyone make or regrind cams for these engines? Can you tell I'm old school? I'm aware of carpenter's packages, and they are very compelling indeed, but I'm just wondering If you can specify a cam with slightly more lift but mostly longer duration. I'd like it to breathe more in the midrange vs the top end. Seems like the cams are relatively accessible and would be another big gain vs cost for HP without needing to crack the head?[/QUOTE we have several packages from 200+ HP to 265+HP all are street engines that run on pump gas and are all day everyday ride anywhere with your honey on the back setups that can get 40+MPG

 

[albertaduke]

NO problem we ship everywhere very practical

true but import taxes into canada adds a steep penalty to the cost, overall I just wanted a bit more grunt and set a budget for it so far what I got for what I was willing to pay is adequate I never race anybody and I do not pick up any challenges , therefore I am where I care to be somewhere in the middle ground beside I like the idea of just carrying a bigger stick in a velvet pouch

 

[IMFASTTOO]

true but import taxes into canada adds a steep penalty to the cost, overall I just wanted a bit more grunt and set a budget for it so far what I got for what I was willing to pay is adequate I never race anybody and I do not pick up any challenges , therefore I am where I care to be somewhere in the middle ground beside I like the idea of just carrying a bigger stick in a velvet pouch

SO WHAT WAS the cost and what did you buy

 

[albertaduke]

whats the cost and what do you have ?

i had the neville package installed for $ 1600 cana bucks

SO WHAT WAS the cost and what did you buy

got the lush 200hp kit had it installed here in kelowna parts & labor $3600 canadian