rotor nozzles

Discussion in 'PSI Superchargers Tech Questions' started by bitsnpieces, May 28, 2008.

  1. bitsnpieces

    bitsnpieces New Member

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    Changed from a littlefield(cooling nozzles in top) to a psi(cooling nozzles in the side)Do I use the same straight thur nozzles or ones angled like the hat and port nozzles? thanks GLENN
     
    #1
    bitsnpieces, May 28, 2008
  2. bobbyblue359

    bobbyblue359 New Member

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    Glenn, We use the angled nozzles with two straight through, (not check valved), pointed at the front of the rotors. (.086) and two on angled 16# check valves (.088) pointed about 1-1 1/2 inches back from the front of the rotor. Have seen very little wear in the coating on the rotors , but the guy who sold us this blower, sold us a real good one and it's pretty tight clearanced.
     
    #2
    bobbyblue359, Jun 4, 2008
  3. eli

    eli Banned

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    Bobby I think you just answered your own problem, I'm sure you have heard that if you aim the nozzles at the front of the rotors on a screw blower that the fuel puddle's in the cavity in front of them, a blower will only pump a certain amount of fuel and air at a given R.P.M. after that the fuel puddle's in the rotors and kind of hydraulics them so the motor looks fat, and it is but only because the blower can't pump more air to the engine and the port nozzles keep putting fuel into the motor. I.M.H.O I think you have to much fuel going into the hat, with a tight blower, I ran two 80's no checks and two 76's with 30 lb checks in a 511 cu. in. brad 5 and never broke a belt. put your thinking cap on and figure this out for yourself. hope this helps. :)
     
    #3
    eli, Jun 5, 2008
  4. bobbyblue359

    bobbyblue359 New Member

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    Gene, Kind of taken aback by your comment. When at Fred Mandolinis, he's the one who set the nozzle sizes and where they pointed. When idling it's only fed by the .086's and the .088 are shut. When bringing up to launch rpm, of course the 16#'s open but so do the run nozzles, (5100 launch with a Lencodrive). Idle temps 625; launch temps750; but it never comes above 950 two to three seconds into the run; that's what makes me think they're fat,(the run nozzles). I'm afraid to try to second guess Fred, as he's the best I've ever come across. If I lean it down just a tad ,(maybe .082's wide open and .084's on 16# checks) and it hurts the rotors or the case, I'm out of business for two years until I can save enough to buy another blower. When you ran your combo that you speak of, was it at 2.28 ratio or 1.30 for funny? We're 1.28 overdrive, 2.28 ratio. Thanks for the advice, hope to hear more, but need more evidence before I risk my only blower. Bob Ginther
     
    #4
    bobbyblue359, Jun 5, 2008
  5. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    hat area

    all i'm sayin is that you're just fine with your hat area. i think it is better to blank off the two front nozzles and put two nozzles in the back of the hat, but we ran both ways on our lencodrive fc. the standard nozzle locations is what we ran 5.66 with, so go figure. we were running a borrowed hat so we couldn't drill the hat for the nozzles. as far as your egt's go, it depends on if your egt's are on the top or bottom.
     
    #5
    Will Hanna, Jun 5, 2008
  6. eli

    eli Banned

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    Thats my answer and i'm sticking to it

    I'm going with the post before this one that i posted, when you get to the bottom of this menagerie if I'm right, I'll let you know where to send the two grand , because you won't be buying any more than the normal amount of belts:D:D:rolleyes: P/S heres a little tip, if you didn't have port nozzles and the motor was fat, it won't rev, I wonder why????? think about this real hard. and think about all the guys that run lots of fuel up top to seal up the blower, and they blow up there shit, the blower is to pump AIR when your not pumping AIR, shit happens that you don't want to happen, then you go gee what happened? get the answer and you don't want to here it. I've run blown alky cars for 30 years, i set 8 NHRA national records i think i know a little more that some 25 year old that ran one 5,66 and now he thinks he's the man.:eek:
     
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    Last edited: Jun 5, 2008
    eli, Jun 5, 2008
  7. Ken Sitko

    Ken Sitko Super Comp

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    Holy Crap!
     
    #7
    Ken Sitko, Jun 5, 2008
  8. Will Hanna

    Will Hanna We put the 'inside' in Top Alcohol
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    topic

    I'm not worried about debating with you who knows more or what I have or haven't done at the age of 28, but when it comes to tuning or driving, Alan Johnson said it best, you don't need to talk much smack in drag racing, just let the scoreboard do all the talking.

    I never belittled your opinion or your accomplishments over the years. I just disagreed with your opinion in regard to hat nozzle area. While the FC I drove and tuned may have 'only' ran 5.66 as you describe it, I've either help tune or tuned directly some pretty fast B/AD's in my day, that had as much, if not more fuel going thru the hat than Bobby has described.

    I would have never got a dragster or funny car to run 6.30's much less anything quicker if it wasn't for being able to work under and learn from some really smart people in my day. Furthermore, if I have a doubt or question, don't think Tom Conway, Ora Vasquez, Marc White, Steve Harker, Mike Kosky among others aren't on speed dial to ask advise. I wouldn't have run 5.66 much less 6.30 if those people was not nice enough to answer my questions when I had a problem or question. You paint the picture like I'm some young know it all. I'm just very, very fortunate to have worked for a few smart people in my day, and every now and then, I make a recommendation on the tuneup for a car and it goes fast.

    SO back to the original topic. The mud racer asked how he should plumb his system through the hat of a psi. Bobby then offered his information he paid Mandoline money for at some point. You took it upon yourself based on a little bit of internet info to completely fix the guy's 'tuneup issues' based on how he has his hat nozzles. I'm only 28 years old with only about 25 years of being around an alcohol car (I was there, but I don't remember the other 3) and only about 10 or more years of working on them, but I'm smart enough to say that's a pretty damn bold statment with no more information to definitively say a guy's got a tuneup problem based on that little bit of data. I know the infamous "Dream Motor" may not have had that much area through the hat, but until I see otherwise, I'll keep on putting fuel through the hat and keep those rotors cool.

    Speaking of advise from my mentors, I'm way too far into this reply. As one of my role models, Tom Conway told me, the thing about arguing with an idiot is it's hard to tell who the idiot is.

    So this has been a drawn out way of telling you I rather disagree with your general theory of nozzle area on PSI motor and I don't feel the need to debate my experience with you.

    For someone with the experience and talent you proclaim to have, it's a pity you've been on the sideline for a while.

    BTW, I hope to turn the phone off for the weekend on Friday for a vacation. You'll probably have an open forum to flame me for a few days....
     
    #8
    Will Hanna, Jun 6, 2008
  9. mbaker3

    mbaker3 New Member

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    Well Said, Ken Sitko!!

    You can take all of my experience with blown alcohol motors and put it in a really, really small pill box. So I appreciate all of the input and opinions from the racers on this fantastic site. Even without much racing experience, but being 58 years old, I know that opinions are like A-- holes, everyone has one!
    Everyone who wants to, learns something valuable everyday, whether he has 1 years experience or 30. This site is meant to pass on what you know and have learned, hoping to help someone with a problem.
    Lighten up Mr. Terenzio! :eek:
     
    #9
    mbaker3, Jun 6, 2008
  10. cpgeneration

    cpgeneration New Member

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    All that's missing here are the flying monkeys..Wow !! :)
     
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    Last edited: Jun 6, 2008
    cpgeneration, Jun 6, 2008
  11. eli

    eli Banned

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    Funny, I see alot of smack talk but no answer's to his problem from any one, blower belts cost a lot of "money", theres a lot of monkeys in your wrench, so whats your cure.?????:) One more thing, "lencodrive" they inherently load up the motor to begin with.:rolleyes: Oh, side lined? can you say pulmonary embolism ? part of my bucket list is to help anyone that needs it,except two dirt bags that live in Conn. :p
     
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    Last edited: Jun 6, 2008
    eli, Jun 6, 2008
  12. clint thompson

    clint thompson Member

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    wow

    damn entertaining!!
    ;)
     
    #12
    clint thompson, Jun 10, 2008

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