148mm pump in an SJ

njfl

X-H2
If a larger diamitor hub is bad then why is TBM selling hunfreds of pump cones (stuffers), I have 3 friends that have the TBM's in there pump and they hit nice compared to stock. [/COLOR]

When I stated "stuffer" I was assuming that he meant either the Worx stuffer or R&D bonded-in fiberglass stuffer that reduces the intake duct volume before the pump.
 
TBM pumpcone with 12/17 Mag Scat prop = :woot: I believe I over heard Paul (LPW) say that a stock SJ pump works fine with a nice little Lamey PV 5mm stroker.

I love my TBM setup with big hub prop, The only way I see anyone needing more then that is if there up in the 850cc and Up category..... most people on here couldnt handle that power anyway. IMHO
 

sjetrider

615 Freeriders are addicted to T1 madness.
TBM pumpcone with 12/17 Mag Scat prop = :woot: I believe I over heard Paul (LPW) say that a stock SJ pump works fine with a nice little Lamey PV 5mm stroker.
I love my TBM setup with big hub prop, The only way I see anyone needing more then that is if there up in the 850cc and Up category..... most people on here couldnt handle that power anyway. IMHO

But he still choses a 144 mag on his boat:sneaky:

I believe this TBM set up is good, but feel the mag is much better.

And the 148mm pump thing, its trial and error, not replacing anything unless its better. But if a stock 701 can handle 144mm then an 800cc mod motor should be able to handle 148mm RIGHT?
 

sjetrider

615 Freeriders are addicted to T1 madness.
I think you are exploring relatively new territory here and if you choose to proceed and get good results with a moderately worked 701-based motor, you will be the innovator of this territory. Any feedback here is mere speculation, except from skinnyman and the two guys who HAD (note "had", i.e. past tense) 148mm pumps and for some reason, ditched them (no derogatory tone implied here, just stating facts).

There are so many variables to play with (intake duct volume, prop/pitch, reduction nozzle, weight of boat/rider, standard/setback). Heck, I don't think anyone has it all figured out for the 140/144 pumps that we have been running for the past 10 years.

Mark at Full Throttle has also been experimenting with a 148mm for his setups too. You might want to contact him and get his input.

Keep us posted though. Looking forward to the results.

They only ditched that particular 148mm pump bro, they are still going with a 148mm, just a different design. I believe you can talk to Ramjet and he will tell you 148mm is the way to go for big HP.
 
For surf im sure a Mag is the only way to go, if you can afford it..... for flatwater unless you have mucho HP I will stick with my setup, for the weight savings, and because Im only doing a Bigbore.
 

sjetrider

615 Freeriders are addicted to T1 madness.
For surf im sure a Mag is the only way to go, if you can afford it..... for flatwater unless you have mucho HP I will stick with my setup, for the weight savings, and because Im only doing a Bigbore.

I need to let you bolt up my 144 mag. The 140 mag is real heavy, the 144 is NOT. I am only running a Tim Judge R&D sleaved 85.5mm flattop myself and the mag is the shizzle. TBM cone $300 Mag prop $225.00, my pump (used) w/ mag prop $700. Not too far off.
 
^^^^Im down for that. lol.... I would realy like to compare....... I noticed a huge difference in my roles "in the surf" from lighning up my boat..... 5lbs of wiegth in the back of the boat wouldnt be bad...... but man 10-15lbs just seems like alot to me.

Im running no foam, 4lb batt, 4lb lighter tank (dry), 8lbs lighter from the waterbox back, 13lb WD hood, stock pole. Kevlar reinforcement. Weight savings of about 30-35lbs from stock...... my guess..... saved about 4k, and another 15lbs over buying a fiberglass not so light weight aftermarket hull....... just alot of blood sweat and teers..... I learned so much through all the process.

And yes the Weight realy did make a huge difference. IMHO
 
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yamaslut

Guest
^^^^Im down for that. lol.... I would realy like to compare....... I noticed a huge difference in my roles "in the surf" from lighning up my boat..... 5lbs of wiegth in the back of the boat wouldnt be bad...... but man 10-15lbs just seems like alot to me.

Im running no foam, 4lb batt, 4lb lighter tank (dry), 8lbs lighter from the waterbox back, 13lb WD hood, stock pole. Kevlar reinforcement. Weight savings of about 30-35lbs from stock...... my guess..... saved about 4k, and another 15lbs over buying a fiberglass not so light weight aftermarket hull....... just alot of blood sweat and teers..... I learned so much through all the process.

And yes the Weight realy did make a huge difference. IMHO


I do like the battery idea alot after looking at yours....
 
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yamaslut

Guest
^^^^ Definetely a easy 12lb loss..... for 23 bucks, does not turn the motor over quite as fast, but I feel it is still suficient...... as long as you dont have starting issues.

werd.... just bring a spare batt for hard starts
 

sjetrider

615 Freeriders are addicted to T1 madness.
^^^^ Definetely a easy 12lb loss..... for 23 bucks, does not turn the motor over quite as fast, but I feel it is still suficient...... as long as you dont have starting issues.

Prol not good for 205 / 210 compression ????? If it is I want a couple of these fo sho.

FWI The 144 mag w/ mag prop wieghs less than 2lbs. more than stock with 13/16 prop and no TBM cone:biggthumpup: The 140 mag wieghed 6lbs more than stock and 4 lbs more than the 144 mag.
SEE I am wieght concious too bro., just need to drop a few more off the gut now.
 

sjetrider

615 Freeriders are addicted to T1 madness.
I think the 148 is the one I heard was heavy, because it has a huge sleeve? How much does that one weight?

The old mag 148's are heavy because the start life as a 155mm OEM and receive a heavy azz stainless insert in vien housing and in wear ring. Same as the 140mm mags starting as a 144mm OEM. Scat now makes a much lighter 148mag not sure how.
The 148mm I am getting is a Solas Gold series and I do not yet know the weight, but as you can see in pics above it is not a huge chunk of stainless billet like the 148skat in ramjets pics.. I hope its light and I hope it hooks up like I believe it will w/ this 5mm stroked 82mm flattop motor Toby and I are assembling for our freestyle build boat. Just gotta figure out where to start on prop pitch somehow. They are expensive $225 ea. so buying multiples will sting. :banghead:
 

skinnyman

YOU CANT RENT MY SKI
Location
Dallas/ToyBox
Im taking my pump out this weekend Ill wiegh it let yall know.
148 -6 vien
When I bought the pump it was to be for a build that went south so I put it in a ski with a ported 760 TL.At that time was running a 8-15.5 lost some bottom end ,gained mid and stupid on the top.Hook up was amazing.Pulled
the 148 and shelfed it for a while.

Got another ski with a Tim Judge race ported SS,TL,142 skat.
Pulled that pump,put in the 148,8-15.5 Went backwards from the 142.
Talked with Dave at Impros he hooked me up with a 14-18 with a kick as he says.It works well but still seems to have a slight lag on the bottom.I would have gone back to the 142 but some one offered me stupid money for it so I had to sell it

Im starting a big bore 6 mil ada build That should match this pumps potential.

As far as wieght goes I really haven't noticed a big diffrence but then again Ive been running this combination for over a year.My SJ was a race boat and seems heavier than my limited (RD sponsons on the front glassed in).

In the surf its killer.
Im not the best at testing due to the fact that I have ADHD-JETSKI.
I always say Im going to spend the day testing and never really do.
 

Mile9c1

X-H2O.com
Location
Grand Rapids, MI
IMO, you are mistaken here as a stock 701 will turn a 144mm pump so why wouldnt a 5mm stroker, flattop w/ 220 comp. and total loss turn a 148mm pump?

It will, I don't think anyone is arguing that. Heck, the WaveVenture 701 turned a 155mm pump! The question is how well it will work... I think having a 75mm center secion and only 6 vanes, it will turn like butter.
 
I am running a 14 superjet with a mod set up I have run the 140 skat set back the 144 and now I am currently running a 148 torrent. About to go from a stock nozzle to a board nozzle I would not trade the 48 pump for anyting great top speed and accelerates like a freight train
 
There's not going to be very many people that have tried a 148 pump in a superjet let alone somebody that has ran all three if you have any questions I can help you out the best I can call me anytime. 5176737928
 

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