Foxwell Motorsports 509 Hyd Roller dyno results
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Foxwell Motorsports 509 Hyd Roller dyno results

  1. #1
    steelcomp was here
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    Default Foxwell Motorsports 509 Hyd Roller dyno results

    It's a couple weeks old, but for those of you who don't get up to the Dyno section, I thought I'd post this. Even though it's going in a car, this would make one helluva low maintenance jet boat engine, especially with a TR and a pair of 750's for the bling.

    Tested a couple weeks ago at Vrbancic Brothers dyno in Ontario.
    Gen6 509
    4.5 bore x 4.0 str.
    Scat std. weight crank
    Engine Pro 6.535 rods
    Mahle 13cc dome piston, 1.27 ch
    11.4:1 cr
    AFR 305's fully ported (309cc), 2.25 valve, 103cc chamber
    Straub hyd roller 244/248 @ .05 .649/.629, 107
    Morel hyd. roller lifter.
    Ede. Vic Jr, fully ported , Pro Systems 1000 4150.

    Corrected (.04)
    764hp @ 6200
    732 lbs/ft @ 4900



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    Senior Member Tony Skagen's Avatar
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    I RUN THE RIVER KEN?TUFF's Avatar
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    put up your spam blockers.
    TOUGHER THAN LEATHER. BITCH.

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    Senior Member desrtrat256's Avatar
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    91 or 110?

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    Amber Racing Services BUSBY's Avatar
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    Quote Originally Posted by KEN?TUFF View Post
    put up your spam blockers.
    I see some things never change around here haha

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    steelcomp was here
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    Quote Originally Posted by desrtrat256 View Post

    91 or 110?
    This was on VP 109 oxy, but we made a pull down at 32* and it still made 746hp and 720lbs/ft. I think on 91 this would still make well over 700/700. Also, for a jet boat I'd gladly give up a little of that lower rpm torque for some more power upstairs with a cam adjustment. I think with a TR and a little different cam (still HR) this could easily make 800 on 91.
    Last edited by scott foxwell; 02-15-2012 at 09:40 PM.
    If God is your co-pilot, change seats!
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    steelcomp was here
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    Quote Originally Posted by BUSBY View Post
    I see some things never change around here haha
    LOL...good to see you around again Brian.
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    Junior Member Tickle's Avatar
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    Y'all are a bit much with your spam round here.

    I'm fixin to sell a big batch of moonshine y'all don't see me spammin on here though!

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    Just Me snoc653's Avatar
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    Quote Originally Posted by Tickle View Post



    Y'all are a bit much with your spam round here.

    I'm fixin to sell a big batch of moonshine y'all don't see me spammin on here though!
    Where is the spam? I don't see anywhere stating anything was for sale. I do see a nice post discussing the output of a 509 engine. Who built the engine is irrelevant as far as the discusion of the engine is concerned. I for one am interested in how the build was done and what went into it and how much more can be eeked out of it. The fact that the poster has a business doesn't make this spam. What is a fact that all the whining from the peanut gallery is quite annoying and detracts from the thread.

    Back to the engine.

    What type of cam change would you make to try and get the most out of 91 Octane? And what kind of numbers would this make running E85 and stack injection?
    So many projects, so little time

  12. #10
    steelcomp was here
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    Quote Originally Posted by Tickle View Post



    Y'all are a bit much with your spam round here.

    I'm fixin to sell a big batch of moonshine y'all don't see me spammin on here though!
    Really??? with 7 whole posts ? LOL...
    Thanks for the bump.
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  13. #11
    steelcomp was here
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    Quote Originally Posted by snoc653 View Post
    Where is the spam? I don't see anywhere stating anything was for sale. I do see a nice post discussing the output of a 509 engine. Who built the engine is irrelevant as far as the discusion of the engine is concerned. I for one am interested in how the build was done and what went into it and how much more can be eeked out of it. The fact that the poster has a business doesn't make this spam. What is a fact that all the whining from the peanut gallery is quite annoying and detracts from the thread.

    Back to the engine.

    What type of cam change would you make to try and get the most out of 91 Octane? And what kind of numbers would this make running E85 and stack injection?
    Thanks snoc. You're right...I don't post in the jet section much any more since I haven't had a jet for years, but I thought this just might be fun to post here.
    I don't think I'd change the cam for pump gas. Maybe drop the compression a tad, but in a boat, not even sure I'd do that. With E85 and a stack, would you be changing the rpm range? If so, that changes a few things. This engine was a failry well thought out combination so if we start changing too much, it becomes a "different" enigne, if you follow what I'm saying. I'd love to put a solid roller in this thing and buzz it 7500 just like it is. That wasn't what the customer wanted.
    With a solid roller, E85 and a stack, bump the peak power up in the 7000 range, I'd guess you could make 850+. Might want to put a 2.300 intake in the heads, but they flow 385 @ .800 as is is. Like I said, the combination starts to change considerably but it's a really good base package. It would sure be fun to try.
    ETA...what I meant about the jet boat and changing the cam, I'd like to see peak torque a little higher in a jet. It just doesn't need 700lbs/ft and I think a little more intake duration would be good and it would help peak power up top a little.
    Last edited by scott foxwell; 02-16-2012 at 07:44 AM.
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    Senior Member desrtrat256's Avatar
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    Quote Originally Posted by steelcomp View Post
    This was on VP 109 oxy, but we made a pull down at 32* and it still made 746hp and 720lbs/ft. I think on 91 this would still make well over 700/700. Also, for a jet boat I'd gladly give up a little of that lower rpm torque for some more power upstairs with a cam adjustment. I think with a TR and a little different cam (still HR) this could easily make 800 on 91.
    Spam or not thats some pretty impressive numbers. hitting the 800 mark with that little C.U. on 91 is awesome. would make a great Comp Jet engine. then take it to the river and have some fun. I must say after reading for 2 years on yb im a fan of what your doin.

    So what would a combo like this cost pan to carb? If you dont mind me asking.

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    steelcomp was here
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    Quote Originally Posted by desrtrat256 View Post
    Spam or not thats some pretty impressive numbers. hitting the 800 mark with that little C.U. on 91 is awesome. would make a great Comp Jet engine. then take it to the river and have some fun. I must say after reading for 2 years on yb im a fan of what your doin.

    So what would a combo like this cost pan to carb? If you dont mind me asking.
    Thanks for the compliment. I'll send you a PM.
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  16. #14
    Senior Member Boat 405's Avatar
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    Pot needs stirring.... around here

    The numbers IMO are really not that all impressive.

    I made 740 hp with a bone stock 502/502 bottom end 9.2 to 1 compression with a set of stock AFR 305. Two points less compression, and a solid roller. Pump gas all day. I put it together in my garage. Ordered a 502/502 short block, ordered 305 AFR heads, talked to Cstraub for a cam and lifters and got a good oil pan. 740hp/680 ft lbs. Peak hp at 6200 rpm. With two points more compression over 800 no problem.

    I'm pretty sure that Finnegan did a similar motor with similar compression and made about 740 too. Acutally he wrote an article about it. just saying.....
    Boat 405.

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