Freestyle legging dasa 950.

[truerider411]

Ok so here is my dilema. I'm running a dasa 950 8mm stroker, 48mm blackjacks, 148mm mag pump,epic ignition(I have not changed the curve yet), limited B-pipe, lightweight fly wheel, and a bunch of other little goodies. All my equipment was new when I purchased it.

Here is my problem I find my setup very legging on the bottom end. Mid hits good. I have a 13/17 pitched impeller. I have rode my buddies 5mm 888 and it hits 3 times harder then mine. Art jetted my carbs for my setup. Why is my ski lacking on the bottom end?

 

[motoman96]

I've got a similar setup and my 950 has more bottom then my buddies DASA 1000 running a pfp and total loss, novi's.

 

[motoman96]

My setup is a 8mil 950 DASA on first bore so 945cc
DASA intake with v-force 3 reeds
Oem 46 mikuni sbn's
Tbm flywheel
Msd enhancer
Mod chamber b-pipe w stock rn waterbox
All going to a setback 148 mag with a 11/17 thinblade impeller and it's got plenty of bottom. I'll be swapping to blackjacks, msd total loss, and a pfp this winter.

 

[wanderer1]

Not the same set up, but i am running into a similar problem. Set back hooker is to steep and overloading my pump not letting my motor rev.

 

[D-Roc]

Lol

 

[truerider411]

Ok. What I did notice with the mag pump was my flip attempts where a little higher but it didn't hit any harder. I'm running the boyeson intake and reeds btw. I have full intentions on switching to a total loss this winter. Do you think that's my problem then? What pitch would you recommend for an impeller with my epic?

 

[motoman96]

I'd prop down to like an 11/17. Just have yours re-pitched.

 

[truerider411]

so pitch could be the probablem. any other suggestions. i really mean it s lacking. borderline bogging.

 

[QJS]

What lightweight flywheel are you running? Have you confirmed the timing is correct with that flywheel?
Chris.

Ok so here is my dilema. I'm running a dasa 950 8mm stroker, 48mm blackjacks, 148mm mag pump,epic ignition(I have not changed the curve yet), limited B-pipe, lightweight fly wheel, and a bunch of other little goodies. All my equipment was new when I purchased it.

Here is my problem I find my setup very legging on the bottom end. Mid hits good. I have a 13/17 pitched impeller. I have rode my buddies 5mm 888 and it hits 3 times harder then mine. Art jetted my carbs for my setup. Why is my ski lacking on the bottom end?

 

[CARBONX2]

Ok so here is my dilema. I'm running a dasa 950 8mm stroker, 48mm blackjacks, 148mm mag pump,epic ignition(I have not changed the curve yet), limited B-pipe, lightweight fly wheel, and a bunch of other little goodies. All my equipment was new when I purchased it.

Here is my problem I find my setup very legging on the bottom end. Mid hits good. I have a 13/17 pitched impeller. I have rode my buddies 5mm 888 and it hits 3 times harder then mine. Art jetted my carbs for my setup. Why is my ski lacking on the bottom end?

What bore you running on the exit nozzle?

 

[Christian_83]

True rider, what is your buddys setup? and what prop is he running?
Does the prop pitch need to be lower when going w bigger pump? because im running a 13/18 144 mag in a SS 850 w all the goodies. And i think it hits pretty hard.
When you guys say bottom, do you mean from idle or were in the RPM area ?

 

[XJCrawler]

True rider, what is your buddys setup? and what prop is he running?
Does the prop pitch need to be lower when going w bigger pump? because im running a 13/18 144 mag in a SS 850 w all the goodies. And i think it hits pretty hard.
When you guys say bottom, do you mean from idle or were in the RPM area ?

He's talking about my Gen3, It has a Jetworks 888 in it http://www.jetworksperformance.com/?p=436

Here are the specs for the Gen3
Jetworks 61x/62t 5mm based motor 888cc
Dasa intake with VF2's
46mm blackjacks
B-pipe
MSD total loss
Solas 144 mag pump

I cant remember the pitch of the impeller, but it was custom pitched by Jetworks for the motor

 

[Pablo]

Prop down 12/17 (ive talked to guys that have been below that pitch)and hell yes throw that TL on there. Those props will run out quick but who cares about going 30 mph.

 

[badvinny]

I think you are running a bit rich possibly, have you tried a smaller pilot? It would help with the proper 950 map too.

 

[XJCrawler]

I think you are running a bit rich possibly, have you tried a smaller pilot? It would help with the proper 950 map too.

I don't think he's running rich, his carbs feel very smooth and don't load up

 

[Marcgraham27]

Would tempature of the engine have anything to do with it?.. I know the dasa 850's like running hot

 

[waterfreak]

take out the EPIC and try an MSD

 

[QJS]

Steve no need for him to remove the EPIC. Pierre Maixent is running one on his 1000cc and others on here get the power too http://www.x-h2o.com/threads/104032-61x-scream . Why make the guy spend money he doesn't need to.
Chris

 

[truerider411]

im just running a lighten stock flywheel. my nozzle i believe i bored to 95mm. i can double check. i might have an extra msd laying around i can swap out. alsomy epic curve has not been changed from its original state. this weekend i will move the curve to the recommendations from epic. if that doesnt work i could try a different pilot jet as well. i am running dual cooling and a flo-control valve too. and when i say bottom end i mean basically just a little above idle. When i punch it to flip the ski has a little power till mid hits. i hope this answers most of your questions. thank you to all of you for your help keep the suggestions coming

 

[Christian_83]

XJC could you find out the prop pitch ? Allso maybe the ignition settings to compare with truerider?
I think that if you dont know what prop and timing curve both setup is running, i would be hard to compare. As timing and prop can change the feeling of the ski/engine alot (and again i think there is a big diffrence from the Epic to the TL)

Would a 148mm mag pump, need a smaller pitch prop, than a 144mm mag pump on the same engine? Or should the prop pitch be the same, if you are moving to a bigger mag pump?