chriselmore_1
high on resin
- Location
- san jose ca
What is ff
HELP¡¡¡¡ DASA 16 mm
- Thread starter meucarango
- Start date
- Location
- Edmonton, AB
frequent flyer
wsuwrhr
Purveyor of the Biggest Brapp
- Location
- Alta Loma, working in Upland
ohhhhhhhhhhhhhhh. Nowwwwwwww I understand. I felt like the guy who gets a text and has no idea what all the acronyms mean. Makes sense.
Kyle has the talent to figure out what is wrong with it and between him and Dan, I have confidence. Too many of these motors are in service, relatively, to all of a sudden have problems, two years after the first one goes to work.
My feeling is some of issues might be the pump/impeller combinations are too small.
Might need a big pump and a big wheel to hold the motor down and let it move some big water.
Brian
Kyle has the talent to figure out what is wrong with it and between him and Dan, I have confidence. Too many of these motors are in service, relatively, to all of a sudden have problems, two years after the first one goes to work.
My feeling is some of issues might be the pump/impeller combinations are too small.
Might need a big pump and a big wheel to hold the motor down and let it move some big water.
Brian
SUPERTUNE
Race Gas Rules
- Location
- Clearwater Fl.
OK, I've always been very straight forward when I see postings that do not make sense to what I found to work and not work.
Even if my comments have to be made to a competitor who posts here also.
Be careful with this info...IMO, this is not necessarily a true statement.
Here is my reasons why...
I do believe that both of these engines are running PFP dry pipes, so I do agree that pump setup is very crucial.
Most engines of this caliber run MSD-TL or some form of programmable ignition curve settings. These type of engines can and will detonate running this PFP dry pipe if you go too big of pump and too big with impeller pitch.
When you do this, the overloaded engine will not accelerate well and reach peak RPM's verses the programmed timing curve. In other words I'm saying the engine is being fed too much load and then the RPM's are down and the MSD-TL or other RPM based ignition curve settings are not retarding the timing to a safer level to prevent detonation.
When a pump and prop combination is too small, the engine will overpower it and cavitate and see no load hence rpm's will be higher, then the ignition will retard timing more with the added rpm's which in turn lowers the chance of detonation occurring.
IMO, I'm backwards as to the statement Brian made.
P.S. I have done this to several engines and have learned more about the setup running this high horsepower PFP dry pipe. (it's not very forgiving like a factory 'B' wet pipe)
GIL
Power In The Hands Of Few
- Location
- Cullman AL
And Brian comes back and says.....................
wsuwrhr
Purveyor of the Biggest Brapp
- Location
- Alta Loma, working in Upland
Competitor?
Read specifically, "My feeling" not "Our" feeling or "DASA's" feeling.
I am talking from my own experience with tuning and making changes to high horsepower cars and car motors in jet boats.
It is no secret, nor I have I tried to insinuate as such, that I am the two-stroke tuner that Dan or Kyle are, I know my way around MY high horsepower Banshees and my rec two stroke tuning throughout the years.
I have said in several posts, "Per Dan, per Kyle"
Brian
Read specifically, "My feeling" not "Our" feeling or "DASA's" feeling.
I am talking from my own experience with tuning and making changes to high horsepower cars and car motors in jet boats.
It is no secret, nor I have I tried to insinuate as such, that I am the two-stroke tuner that Dan or Kyle are, I know my way around MY high horsepower Banshees and my rec two stroke tuning throughout the years.
I have said in several posts, "Per Dan, per Kyle"
Brian
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masterblaster
X-H2
what rpm does the pfp hit and make its peak torque? At least one of these guys was running a 140 mag.
Idok
F1pro
- Location
- Nations oldest muthaF+++kin city
Bogart once told me a 144mm pump was good to about 900cc's
big cc couches run huge mag pumps...
seems to me this particular engine with that particular exhaust would need a 145-148mag....
its also been stated on this site a couple of times by different people (including Chuck) that the PFP needs a TL system..
big cc couches run huge mag pumps...
seems to me this particular engine with that particular exhaust would need a 145-148mag....
its also been stated on this site a couple of times by different people (including Chuck) that the PFP needs a TL system..
- Location
- ARGENTINA
Big Kahuna
Administrator
- Location
- Tuscaloosa, AL
What are we seeing?
chriselmore_1
high on resin
- Location
- san jose ca
what was the verdict on the motor?
wsuwrhr
Purveyor of the Biggest Brapp
- Location
- Alta Loma, working in Upland
If you were asking me.....
The jist of the engine problems were the porting was off on the bottom of the exhaust and the piston skirt was also "catching" on the downstroke, it was real close to freeporting. Kyle took a spare top end with him and exchanged it. Went over the setup and tuned the boat.
According to Kyle, he seemed really happy with it now.
Brian
The jist of the engine problems were the porting was off on the bottom of the exhaust and the piston skirt was also "catching" on the downstroke, it was real close to freeporting. Kyle took a spare top end with him and exchanged it. Went over the setup and tuned the boat.
According to Kyle, he seemed really happy with it now.
Brian
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- Location
- s florida
that's some great customer service right their!!
wsuwrhr
Purveyor of the Biggest Brapp
- Location
- Alta Loma, working in Upland
Yes sir, I wish it were right when it went out the first time, but it happens. At least it is right, now, and he received some in-person tuning.
Brian
waxhead
wannabe backflipper
- Location
- gold coast
Good on you guys for stepping up and fixing it. ALot of people will try and just pass the buck on there work and blame someone else
Polish jet pilot
4aces4aces4aces4aces4aces
- Location
- Warsaw, Poland
This is excellent news and excellent customer service - when something is not right you admit it and fix it. Honesty makes more benefit in the long run, needles to say...
waxhead
wannabe backflipper
- Location
- gold coast
I wonder if you have a incorrectly machined cylinder as well
- Location
- Largo, Fl
wsuwrhr
Purveyor of the Biggest Brapp
- Location
- Alta Loma, working in Upland
Beta,I don't see where you have responded to me here.
As far as what DASA can do for you is the same, I am sure it is quite apparent we will make it right, now matter what the problem is.
As far as I know, Kyle has been in contact with you. I don't know what you and Kyle have aranged. Are you able to call DASA and speak to Kyle?
As I have asked in PM's, Are you able to send the cylinder to us? This is the easiest and fastest way to get it handled. We can inspect the cylinder and see if it is the same problem and go over your pump, carb, ignition and other boat setups.
I don't understand this part, after replacing the first piston, in either of these, why would you bother to do a second? The result will be the same and the risk of doing serious damage is so high.
Brian
As far as what DASA can do for you is the same, I am sure it is quite apparent we will make it right, now matter what the problem is.
As far as I know, Kyle has been in contact with you. I don't know what you and Kyle have aranged. Are you able to call DASA and speak to Kyle?
As I have asked in PM's, Are you able to send the cylinder to us? This is the easiest and fastest way to get it handled. We can inspect the cylinder and see if it is the same problem and go over your pump, carb, ignition and other boat setups.
I don't understand this part, after replacing the first piston, in either of these, why would you bother to do a second? The result will be the same and the risk of doing serious damage is so high.
Brian
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