Bigger blower or Nitrous plate system?
+ Reply to Thread
Page 1 of 2 1 2 LastLast
Results 1 to 14 of 16

Thread:
Bigger blower or Nitrous plate system?

  1. #1
    Senior Member SLACKER's Avatar
    Join Date
    Jan 2008
    Location
    Glen Allen, VA
    Posts
    333

    Default Bigger blower or Nitrous plate system?

    I have done some searching on here but havent really found what I'm looking for.
    In a nutshell would it be better to upgrade another size blower(6-71 to a 8-71)or buy a new nitrous plate system and use as an intercooler. Talking about heat buildup...

    I have a 468BBc that is set up for a blower, has edelbrock marine heads,dual 750dp, and a blowershop 6-71. I was thinking of putting the gas on it this summer, to use as an intercooler etc.. But time I buy the kit, fuel lines, fittings, other odds and ends, and not including the refills.I will be almost in the range of stepping up to new 8-71. This isnt a dragboat, its a river layup and its just used for playing around with the occasional race here and there. I think the plate system would be nice to have but where WOULD YOU spend the money. Its gettin late and probably left out some key info but I'm sure you guys will let me know what I forgot.

    Thanks,
    Chris

  2. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  3. #2
    No Sandbar To Far sanger rat's Avatar
    Join Date
    Dec 2007
    Location
    MI
    Posts
    3,276

    Default

    Have you looked into water/meth injection?

  4. #3
    Renegade jet tunneljet's Avatar
    Join Date
    Apr 2008
    Location
    Shorewood Il
    Posts
    472

    Default

    Why not just buy a superchiller?

  5. Remove Advertisements
    PerformanceBoats.com
    Advertisements
     

  6. #4
    Senior Member Jim W's Avatar
    Join Date
    Dec 2007
    Location
    Upstate NY, Canandaigua
    Posts
    629

    Default

    Going from a 6-71 to an 8-71 only gains you 1" of rotor length.

    Have you looked into E-85?

    105 octane, acts like a intercooler and cheap to buy, $2.00 per gal ish.

    Heath Daniel is a member here. Here is his web site. Raceone85.com
    Heath can convert your carb's over and will run them on his car to dial them in for you.

    Plenty of information here e85forum.com

    Jim
    GN7
    Do you guys ever read anything I post, or just go straight for the throat?


    Got it wet on 6/15/10-------->finally......



    E-85 I'm saving the world--->8 thumps at a time

  7. #5
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    Quote Originally Posted by Jim W View Post
    Going from a 6-71 to an 8-71 only gains you 1" of rotor length.

    Have you looked into E-85?

    105 octane, acts like a intercooler and cheap to buy, $2.00 per gal ish.

    Heath Daniel is a member here. Here is his web site. Raceone85.com
    Heath can convert your carb's over and will run them on his car to dial them in for you.

    Plenty of information here e85forum.com

    Jim
    x2 that's teh cheapest thing to do to get huggggeeee power gain and realllly bring the intake temp wayyyy down if its not available in your area, drop some $$$ into a good intercooler.

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

  8. #6
    Senior Member HighVoltage329's Avatar
    Join Date
    Dec 2007
    Location
    San Jose, Ca.
    Posts
    1,299

    Default

    NOS plate system on top of a blower will give you one hell of an increase. I ran that same set up for some time and surprised quite a few. Increasing blower size won't give you the same punch.

  9. #7
    Gone
    Join Date
    Dec 2007
    Location
    Sparks, Nevada
    Posts
    1,824

    Default

    I'd put 12.5 to 1 trw pistons in the thing, sell the carbs and nitrous, put an injector on it and leave the 6/71 alone. Cam it about 284 @ .050 or so.
    Alcohol would be my intercooler, make more power without the weight.
    4 point of compression makes all the difference.

    Well....you asked what I would do. There ya go.
    Prolly no suprise.
    Last edited by Fiat48; 03-18-2009 at 07:30 PM.

  10. #8
    Senior Member SLACKER's Avatar
    Join Date
    Jan 2008
    Location
    Glen Allen, VA
    Posts
    333

    Default

    Thanks for the replys guys..

    There are some good ideas, some I'm famaliar (E-85), some I'm not(water/meth). I will do some more homework. I Just got a wild hair and wanted to do some upgrades this year.
    The reason I didnt state the intercooler is some peeps tried TBS intercooler without much of a gain (open transom boats). They said the nitrous worked better than the intercooler. IT's $$$ either way you look at it..

    Fiat,
    No surprise,I would like to eventually go injected down the road...

    Thanks again, I appreciate your time..
    Chris

  11. #9
    Gone
    Join Date
    Dec 2007
    Location
    Sparks, Nevada
    Posts
    1,824

    Default

    For down the road:
    At 5 lbs of boost...STP
    A 468...blown ...8 to 1 compression....at 100% ve...can do about 572 hp at 6500 rpm
    at 12.5 to one compression....893 hp at 6500 rpm.
    Just to ballpark ya.

  12. #10
    Senior Member littlejockocougar's Avatar
    Join Date
    Jan 2009
    Location
    pleasant hill
    Posts
    1,276

    Default

    Quote Originally Posted by SLACKER View Post
    I have done some searching on here but havent really found what I'm looking for.
    In a nutshell would it be better to upgrade another size blower(6-71 to a 8-71)or buy a new nitrous plate system and use as an intercooler. Talking about heat buildup...

    I have a 468BBc that is set up for a blower, has edelbrock marine heads,dual 750dp, and a blowershop 6-71. I was thinking of putting the gas on it this summer, to use as an intercooler etc.. But time I buy the kit, fuel lines, fittings, other odds and ends, and not including the refills.I will be almost in the range of stepping up to new 8-71. This isnt a dragboat, its a river layup and its just used for playing around with the occasional race here and there. I think the plate system would be nice to have but where WOULD YOU spend the money. Its gettin late and probably left out some key info but I'm sure you guys will let me know what I forgot.

    Thanks,
    Chris
    I am now on my second water alky injection set up. tradered the old one away. I have an intercooler, and the alky injection. May loose the intercooler. I ran the last water/alky set up w/o intercooler. I have seen pump gas blown motors run 20 lbs. of boost w/34* of timing. The alky system we built is so simple and cheap. I will try to post some pics soon..
    Take a -6 line from manifold ,pressurize a tank , which feeds a spray b ar over the carbs, bingo..... The main thing is to run a check valve so when your not making boost you dont suck the water/alky in on the intake side. plus when your not making boost, you dont need the injection.. No pumps, batteries, switches to fail.. IF YOU HAVE BOOST, YOU HAVE THE INJECTION YOU NEED...Good luck, hope this helps. The mostexpensive part is the one way check valve, ($65-$85), depending on how trick you make your tank.. Steve

  13. #11
    Senior Member HighVoltage329's Avatar
    Join Date
    Dec 2007
    Location
    San Jose, Ca.
    Posts
    1,299

    Default

    Great idea. What size tank are you using?

  14. #12
    Senior Member littlejockocougar's Avatar
    Join Date
    Jan 2009
    Location
    pleasant hill
    Posts
    1,276

    Default

    Quote Originally Posted by HighVoltage329 View Post
    Great idea. What size tank are you using?
    Thanks, I wish it was all my creativity, but I stole the idea from one of my dads buddys old boat. I think my container holds about 2 1/2 quarts. I will get pics soon. Steve

  15. #13
    Half a bubble off jrork's Avatar
    Join Date
    Dec 2007
    Location
    Silverdale, Washington
    Posts
    2,467

    Default

    Quote Originally Posted by littlejockocougar View Post
    I am now on my second water alky injection set up. tradered the old one away. I have an intercooler, and the alky injection. May loose the intercooler. I ran the last water/alky set up w/o intercooler. I have seen pump gas blown motors run 20 lbs. of boost w/34* of timing. The alky system we built is so simple and cheap. I will try to post some pics soon..
    Take a -6 line from manifold ,pressurize a tank , which feeds a spray b ar over the carbs, bingo..... The main thing is to run a check valve so when your not making boost you dont suck the water/alky in on the intake side. plus when your not making boost, you dont need the injection.. No pumps, batteries, switches to fail.. IF YOU HAVE BOOST, YOU HAVE THE INJECTION YOU NEED...Good luck, hope this helps. The mostexpensive part is the one way check valve, ($65-$85), depending on how trick you make your tank.. Steve
    This deserves it's own thread cuz the approach is so simple. Gotta love that!

    Glad to hear it works for you and would love to see some pics too.

    John

  16. #14
    mo balls than $cents$ IMPATIENT 1's Avatar
    Join Date
    Dec 2007
    Location
    hugo,okla
    Posts
    11,733

    Default

    Quote Originally Posted by SLACKER View Post
    Thanks for the replys guys..

    There are some good ideas, some I'm famaliar (E-85), some I'm not(water/meth). I will do some more homework. I Just got a wild hair and wanted to do some upgrades this year.
    The reason I didnt state the intercooler is some peeps tried TBS intercooler without much of a gain (open transom boats). They said the nitrous worked better than the intercooler. IT's $$$ either way you look at it..

    Fiat,
    No surprise,I would like to eventually go injected down the road...

    Thanks again, I appreciate your time..
    Chris
    nitrous doesn't work as well as a intercooler, we went thru that last summer on my uncles blown 540. the nitrous hit hard, but not super impressive and we bent the heaviest duty wrist pins ross made doin it i say intercooler or change the fuel system to e85.

    Dare to be different, if it turns out great you can claim you planned it that way.

    Jetboatperformance.com

+ Reply to Thread
Page 1 of 2 1 2 LastLast

Quick Reply Quick Reply

Register Now

Please enter the name by which you would like to log-in and be known on this site.

Please enter a password for your user account. Note that passwords are case-sensitive.

Please enter a valid email address for yourself.

Please select your insurance company (Optional)

Log-in

Tags for this Thread

Digg This Thread

Posting Permissions

  • You may post new threads
  • You may post replies
  • You may not post attachments
  • You may not edit your posts
  •  
 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95