bigtis
Active Member
The only thing different is the ecu Roy. You can choose to run a 39 or a 56 psi reg. That's your choice as well as the fuel curve. Injectors and everything are still stock laser injection parts.
2.4 BP vs 225 PM
- Thread starter msethsmile
- Start date
I was told by someone that a DSR prostock 200 has quite a few advantages that helped them spin up so quick, the 200's supposedly with the main changes being
16 amp fly wheel which reduces drag magnetic drag and is lighter
custom fuel curves
and fuel pump/regulators like the hipo motors minus the vst pumps
16 amp fly wheel which reduces drag magnetic drag and is lighter
custom fuel curves
and fuel pump/regulators like the hipo motors minus the vst pumps
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bigtis
Active Member
the vst is removed if you prefer, but as I stated in the previous post the regulator psi and the pump are strictly the racers preference. You can use the pump from the vst tank, and a 39lb regulator. I use an 849849 box with a 56psi regulator , but have never tried anything else with that setup.
You could leave the vst on and just swap the ecu if you wanted and it would work.
msethsmile
Funny Guy
I've had several pos motors but never a ps motor.
JaySmithRacing
Active Member
I'd NEVER pick a 2.4 ANYTHING over a 2.5....
My .02
Jay
My .02
Jay
suicidealli
Well-Known Member
They will run!!!!!!!!!!! On a lite boat they hit 8000, and they start coming on!!!!!!!! Just don't have a long life.
The 2.5 will live a lot longer, but the factory cast piston won't live in a stock 200 up in the big rpms....... Every ps motor I have seen run vertex pistons.. They live really well on the drag strip for the 1/4 mile run...... No way would I want to run them at 9000 for a few minutes........ The ps stock laser injection is the same but pretty much except running a 260/280/drag fuel system... Pump, no vst, return line, and ecu. a custom fuel curve.. A stock 225 pm with a factory fuel curve with no rev limiter, can't touch a ps motor... I agree the 2.5 is the way to go for sure, but side by side 100 % stock a bp would be my choice for a race. Not on a fishing rig.
Roy
bigtis
Active Member
My first ps mota was raced all year, and river rode ALOT as well. I turned it 8800 lean for 3-4 miles more times than my hands and toes have digits. She would make 9100 with fuel. I put three sets of rings on those pistons, and am fixin to put the fourth set on em. They've also seen 250lbs of squeeze on the second set of rings.
The vertex pistons are down right worth every penny.
The vertex pistons are down right worth every penny.
suicidealli
Well-Known Member
I have heard nothing but good things about them for a cast piston.
K.Kiser
Well-Known Member
f o r e v e r ................
I've got an .015 set of Vertex that I'm gonna put in a very heavy lake cut steel sleeve... I plan on turning over 9,000 for short burst and ain't really worried about it compared to many hundreds or more passes some racers put on them above 8,500 while testing year round...
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K.Kiser
Well-Known Member
On a fishing boat the rev limiter is fine IMO... On a drag boat with a short prop they will make a quicker boat when set-up to spin 8,500+... Sure they're probably down on power up there if you were trying to pull a topend prop, but they still make enough power up there to not diminish the gain of acceleration that a short prop will give in a 1/4 run...
bigtis
Active Member
Nathan. Your engine is built right. Add comp to about 150-160. Add timing. Add a little fuel, and do away with the rev limiter all together.
msethsmile
Funny Guy
xb03fs--rod bolts, 1st hand experience (oops)