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reversion
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  1. GN7 On the Dyno
    I have my motor out for some winter upgrades and it looks like I am getting some reversion? I installed my cam 2 degrees advanced but would like to retard it as I am not running 11:1 compression and would like a little more rpm on the top end. I have Imco powerflow exhaust and have been told...
  2. V-Drives
    Freshining up a 468 for my Eliminator. Going to use Hardin logs with turndowns. Comp says I shouldn't have any reversion problems with 112 lobe deal. What do you guys thikn? 11-461-8 - Xtreme Marineâ„¢ Retro-Fit Hydraulic Roller Camshafts
  3. Jet Boats
    Has anybody on here switched to center rise and had a problem with reversion? I took off my logs and put on imco thumper with the short risers and when I took them off today I found water in all my exhaust ports with rust. The boat had a pretty bad surge at idle bit drove fine, I figured it was...
  4. GN7 On the Dyno
    So I got my 20 V-Drive Spectra all back together but now it's milkshaking. We smoked and pressured checked the engine and no leaks. Checked the chiller and headers they look good. So I idled the boat on the trailer for a couple minutes and took the headers off and sure enough all the header...
  5. GN7 On the Dyno
    I'm looking at Quick fuel. Would either help low end rpm power? The anti-reversion sounds like it might. Worth the money? Tim
  6. GN7 On the Dyno
    I have a 565 bbc with a Dart tunnel ram and C&J prepped 1050 dominators. Are the anti reversion plates worth the bucks? $169. ea. and they claim 10 -15 hp for a single carb deal.
  7. Bob Teague
    I may have posted this in the wrong place before, I hope this is where I should ask this question. I have a 4.6 twin cam ford engine in a 19' Jet. Am putting a turbo (BW S475 1.10 AR 83mm with Air to Water intercooler) on it this winter and want to know if I can run the exhaust out the transom...
  8. GN7 On the Dyno
    I have a 4.6 twin cam ford engine in a 19' Jet. Am putting a turbo on it this winter and want to know if I can run the exhaust out the transom (single) without reversion/sucking water into engine. The 4.6 twin cam has a bit of overlap due to the twin cam 4 valve arrangement. The turbo will be...
  9. Outboard Church
    Preface: If you own a 300XS Outboard motor and are running twins or single in the triple digit realm you will have water reversion issues. What is water reversion? It occurs at high speed [typically 85+ MPH] when the head water from the motor is dumped out onto the wingplate. Upon exit at...
  10. GN7 On the Dyno
    Here is the situation. I have a new motor its a 638" bbc, dart block, intake and heads. the headers are cmi split tops. the cam is from comp but it was a teage specific cam. the specs on the cam are 258* intake 266* exhaust* @.050" on a 114 lobe seperation. the headers have no drop at the tail...
  11. V-Drives
    I'm having a motor built with a fairly stout HR cam. 572 chevy, single carb. Not setting the world on fire. Appx 750 HP. My only request to engine builder is that I want to run Log style exaust for noise reasons (little kids) as well as makes a nice sleeper. I know it'll cost some power...
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