HP Pumps and the riser???
What gives?
http://cgi.ebay.com/ebaymotors/yama...012QQitemZ220258354493QQrdZ1QQsspagenameZWDVW
What gives?
http://cgi.ebay.com/ebaymotors/yama...012QQitemZ220258354493QQrdZ1QQsspagenameZWDVW
HP Pumps
- Thread starter Shonuff
- Start date
WFO Speedracer
A lifetime ban is like a lifetime warranty !
- Location
- Alabama
Thats a helluva deal thus far,2 days left though , I wonder how much it ends up at?
That's what it is. Fuel injection for your ski.
They can be real trouble to set up correctly, but if everything is in good working order MRD Injection can be easier to tune than carbs.
The biggest problem is that you have to be willing and able to take the time to learn about it and understand the system in order to make it work properly.
*info stolen from Crockett
masterblaster
X-H2
so who is hp pumps? I couldnt get any info outa this guy about who he bought it from,he says he couldnt get it runnin cause he couldnt get any spark,sounds like a good way to sell a broke motor and save your feedback score to me
'Crockett
Freelance Smartass
Riser = stroker plate
Long rod strokers use a spacer plate between the cases and the cylinder
HP pump= HP took stock Yamaha pumps and blueprinted them then "scalloped" in beetween the veins around the outer perimeter to increase the pump volume.
I ran several of them on my injected strokers and they improved hook up quite a bit, but because the outer shell had been thinned out they tended to blow out from the pressure the stroker motors produced.
I think I still have one at the shop I'll try to get a couple of pix to post up . . .
Edit: I think "HP" was the guys initials or something . . . . I don't remember that exactly maybe the "P" was for "performance" like "Harry's performance pumps" or something like that.
Jetlyne/Solas came out with the first big hub pump stator section and HP was pretty much done then. I still run a big hub Solas in my Superjet. . . . . great hook up for what I do. . . .
As far as the cylinder being marked "HP Pumps" I don't know exactly. . . . . . but anyone capable of doing the quality of work I saw on those pump could well have been building motors too. Gear heads grind on EVERYTHING ! Ask me how I know . . . . . . . . Ha ha !
:biggrin:
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'Crockett
Freelance Smartass
Well, I guess I must've tossed the last HP Pump I had 'cuz I can't find it . . . .
Driving in this morning I remembered a couple of other things they did to those pumps:
The leading edges of the pump veins were built up with weld and came almost flush to front lip of the pump. This would basically do the same thing as setting a prop back does now as far as improving hookup. The leading and trailing edges of the pump veins were knife edged to process the water better with less chance for cavitation.
On a least one of the pumps I had, the first 1/2" to 3/4" of the veins were thicker for increased strength. All the pumps were marked "HP Pumps" and were numbered also. This may have been to keep track of the different things they were trying with them.
I remember measuring 2 HP Pumps side by side at one point, and they had 2 different major I.D. sizes. The larger one having the thinnest wall and had just blown the side out causing me to look at the other one for signs of pending failure.
Well there you go . . . . . . there's some more of the useless Jetki Racing trivia I have floating around inside my demented brain . . . . . . I'll remember oddball crap like that 'till I'm 90, but I can't remember someone's name 15 minutes after I meet them ! . . . . oh, well . . . .
:biggrin:
Driving in this morning I remembered a couple of other things they did to those pumps:
The leading edges of the pump veins were built up with weld and came almost flush to front lip of the pump. This would basically do the same thing as setting a prop back does now as far as improving hookup. The leading and trailing edges of the pump veins were knife edged to process the water better with less chance for cavitation.
On a least one of the pumps I had, the first 1/2" to 3/4" of the veins were thicker for increased strength. All the pumps were marked "HP Pumps" and were numbered also. This may have been to keep track of the different things they were trying with them.
I remember measuring 2 HP Pumps side by side at one point, and they had 2 different major I.D. sizes. The larger one having the thinnest wall and had just blown the side out causing me to look at the other one for signs of pending failure.
Well there you go . . . . . . there's some more of the useless Jetki Racing trivia I have floating around inside my demented brain . . . . . . I'll remember oddball crap like that 'till I'm 90, but I can't remember someone's name 15 minutes after I meet them ! . . . . oh, well . . . .
:biggrin:
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masterblaster
X-H2
Anyone have any success with MRD fuel inj in a freeride ski here,Does it work well for low end hit?
\also the the pump that was in this b1 did not look like it was modified heavily,did hp pumps build motors as well?
\also the the pump that was in this b1 did not look like it was modified heavily,did hp pumps build motors as well?
Idok
F1pro
- Location
- Nations oldest muthaF+++kin city
i think thats the last thing you want in a surf ski
masterblaster
X-H2
it does look mighty low in the hull,has anyone ever run this setup
'Crockett
Freelance Smartass
You won't find anything that can be tuned to hit as hard on the bottom end anywhere. . . . the "side draft" style mounting does leave you open to likely water ingestion on a surf ski.
That being said, I have ridden injected SuperJets in the surf without issue, but I was not doing it on a regular basis nor was I doing all the silly poop you guys do ! !
I think an air box could be fabbed to remedy this issue or an adapter made to mount it to the top of a conventional style intake manifold.
Since I am a machinist and fabricator and I like to tinker with and build oddball poop . . . . . I would consider it worth the effort . . . . . probably not a good direction for the average weekend surfrider to go though, carbs are more user friendly.
That's just my $..02 worth
:biggrin:
That being said, I have ridden injected SuperJets in the surf without issue, but I was not doing it on a regular basis nor was I doing all the silly poop you guys do ! !
I think an air box could be fabbed to remedy this issue or an adapter made to mount it to the top of a conventional style intake manifold.
Since I am a machinist and fabricator and I like to tinker with and build oddball poop . . . . . I would consider it worth the effort . . . . . probably not a good direction for the average weekend surfrider to go though, carbs are more user friendly.
That's just my $..02 worth
:biggrin:
masterblaster
X-H2
croket,thats what I was thinking of doing,fab up a right angle adapter that raises the intakes up and bolt to a stocker dual superjet snorkel intake. How much would you like to try and fab something like that up.
Id just like to try it out since I already have them on this motor in the link I bought,May not run them permanent,but it would be cool to give it a shot for some nasty bottom end,I also heard you can get a air water separator from group K that would work well with these,maybe get rid of the neeed for fuel tank foam
Id just like to try it out since I already have them on this motor in the link I bought,May not run them permanent,but it would be cool to give it a shot for some nasty bottom end,I also heard you can get a air water separator from group K that would work well with these,maybe get rid of the neeed for fuel tank foam
masterblaster
X-H2
Crockett..
just got the pump in that came with this motor,everything you said except the leading edges of the veins being build up is done to this pump.it has the #0109 engraved in it.It has a prop ive never heard of hill propellars? and for some reason it has one of the cooling lines running toward the back of the ski and has a oversize sea doo turn nozzle? Id like to try and come up with some type of risor plate for the intake of the mrd,it seems like it would be a fun setup to try out if it really hits that hard on the bottom end
just got the pump in that came with this motor,everything you said except the leading edges of the veins being build up is done to this pump.it has the #0109 engraved in it.It has a prop ive never heard of hill propellars? and for some reason it has one of the cooling lines running toward the back of the ski and has a oversize sea doo turn nozzle? Id like to try and come up with some type of risor plate for the intake of the mrd,it seems like it would be a fun setup to try out if it really hits that hard on the bottom end
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jetskiking
Im done sanding!!!
- Location
- Dallas Georgia
If I remember correctly the jets are almost next to impossible to get
'Crockett
Freelance Smartass
Hill Propellers is now Bronson Hill propellers . . . They have done most of my Props over the years. They do outstanding work, razor sharp leading edges,perfectly balanced and mirror finish on all surfaces. They cost about twice as much as Impro's though. You probably have a Solas "K" (YB-SC-K) prop that's been worked over by Hill. That was a common set up for 'Blaster racers back then.
Note: This particular impeller did not have the polished finish
As far as a 90 degree adapter for the MRD I was thinking of using a Riva dual 44/46 intake because of the wide spacing and just making an adapter plate to mount the throttle body to.
Since discussing this here, I have been toying with the idea of building another Injected stroker for this type of use. Even with race style porting my old FI Stroker would jump out of the water with just a blip of the throttle.
:biggrin:
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Get crackin'.
masterblaster
X-H2
do you think you could mod one for me to work with the mrd also? I think this motor is gonna have a pretty nasty mid hit,im sure it will be crisp off bottom end even with the race port,bad thing is its runnin 200 lbs comp,and i really dont want to run race gas.I might mix a little at first then try and find some domes for this mrd head.It looks like a 5 mil stroker to me. the prop is a 15/19 ya think it will have some low end or is it pitched to high
'Crockett
Freelance Smartass
The MRD head is a slab style head . . . no replacable domes. . . . .
A competant machinist can recut the head to lower the compression to 175-180 psi for safe pump gas operation. For now you will have to run race fuel or you'll fry the motor.
Try running it like it is on race fuel and see if the porting will be o.k. for what you are doing with it. . . . . any injected stroker will hit hard but it may be to high revving and have a narrow powerband for your application.
Since you have a long rod stroker that uses a spacer plate, the port timing can be adjusted some by milling the plate and dropping the cylinder down and then recessing the head. Dropping the cylinder a millimeter or two would make a huge difference to bottom end for freestyle.Since you'll be needing the head re-cut anyway for running pump gas that would be the time to do the plate also.
It sounds like a bigger deal than it is, just choose a shop that has some experience with this kind of thing and it'll be fine. You may find that the porting is not all that radical anyway, I'm just throwing out some options.
I ran that same prop in my FI Stroker It'll haul azz on the top, I had one bent to 15/19.5 and it was stupid fast ! . . . . . I don't have any experience with the new generation of swirl style impellers with a Stroker so you'll have to ask around for a reccomendation on that. Seems like it would be easy to cavatate a short one like most of the freestyle guys run in the non-Strokers.
I'd be willing to work with you on an adapter plate, but I'd like for you to come up with an intake like my RIVA manifold so I can build two at once and save us both a little time,money and trouble.
Get ahold of me by PM and we'll discuss it further . . . . . .
:biggrin:
A competant machinist can recut the head to lower the compression to 175-180 psi for safe pump gas operation. For now you will have to run race fuel or you'll fry the motor.
Try running it like it is on race fuel and see if the porting will be o.k. for what you are doing with it. . . . . any injected stroker will hit hard but it may be to high revving and have a narrow powerband for your application.
Since you have a long rod stroker that uses a spacer plate, the port timing can be adjusted some by milling the plate and dropping the cylinder down and then recessing the head. Dropping the cylinder a millimeter or two would make a huge difference to bottom end for freestyle.Since you'll be needing the head re-cut anyway for running pump gas that would be the time to do the plate also.
It sounds like a bigger deal than it is, just choose a shop that has some experience with this kind of thing and it'll be fine. You may find that the porting is not all that radical anyway, I'm just throwing out some options.
I ran that same prop in my FI Stroker It'll haul azz on the top, I had one bent to 15/19.5 and it was stupid fast ! . . . . . I don't have any experience with the new generation of swirl style impellers with a Stroker so you'll have to ask around for a reccomendation on that. Seems like it would be easy to cavatate a short one like most of the freestyle guys run in the non-Strokers.
I'd be willing to work with you on an adapter plate, but I'd like for you to come up with an intake like my RIVA manifold so I can build two at once and save us both a little time,money and trouble.
Get ahold of me by PM and we'll discuss it further . . . . . .
:biggrin:
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tom21
havin fun
- Location
- clearwater FL
you are not the only one. and please don't ever stop with the good ole days stories. I'm disappointed this story is over- for now??:arms: