quad-rotor 565
03-29-2005, 08:54 PM
#31
Re: quad-rotor 565
Originally Posted by zt260
565ci is more than enough for 1500HP. My Quad rotor 2.3 EFI 540 makes 1370HP at 6300rpm. It's actually hard to make less than 1100HP with the 3.3 quad rotor.
I'm using a callies racemaster crank, oliver rods, and AFR 357 heads. I'm very happy with this combination.
I'm using a callies racemaster crank, oliver rods, and AFR 357 heads. I'm very happy with this combination.
03-30-2005, 01:21 AM
#34
VIP Member
Re: quad-rotor 565
Originally Posted by MESABALANCING
I agree with Bob I actually tried to pm last night basically word for word what Bobs respond is with 20 years of modifying repairing and balancing crankshafts I can tell you there is no better heat treating any where then LA Enterprise Crower and Hank The Crank Bryant or Moldex don't use anything else you will not regret it the quality and workmanship is second to none thats why I refuse to build anything thats not with there parts.
I have always used the Crower stuff with good luck.
Bob I have heard good stuff on Winberg crankshafts.Ya don't hear that name very often. I have a friend that was doing a stroker crank in a outboard 2.5 drag motor and Winberg was the only one that said he could make it
Rob
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The Only Time You Have To Much Ammo Is When Your Swimming Or On Fire.
03-30-2005, 09:14 AM
#37
Re: quad-rotor 565
I had a 598 on the dyno yesterday it made 1283 hp with 12# of boost. Hoping to run this combo with 100ll. also the timing was at 32* dustin really wanted more timing but my engine builder is a little more conservative.
03-30-2005, 09:57 AM
#38
Registered
Re: quad-rotor 565
I am assuming you will be EFI. Forget the SCAT crank, it won't be an if but a when it will break 
Piston oilers and pin oilers are a good idea as well. Making 1500hp with that setup is not hard, keeping it together becomes the struggle, the hardest part will be controlling combustion temperature. Expect to have to play with overlap and exhaust durations to keep it in line. Making a sweep on the dyno may give you a trend, but you need to hold that engine at 6500 rpm for some time to see where the EGT's stabilize if they ever do. Good luck 
Piston oilers and pin oilers are a good idea as well. Making 1500hp with that setup is not hard, keeping it together becomes the struggle, the hardest part will be controlling combustion temperature. Expect to have to play with overlap and exhaust durations to keep it in line. Making a sweep on the dyno may give you a trend, but you need to hold that engine at 6500 rpm for some time to see where the EGT's stabilize if they ever do. Good luck
03-30-2005, 10:47 AM
#39
Registered
Re: quad-rotor 565
Originally Posted by whitewater
Killer numbers zt260! Does anyone know how much of a speed drop you will see if you run a similar motor as zt260 when run at peak torque instead of peak hp?
03-30-2005, 11:05 AM
#40
Registered
Re: quad-rotor 565
I believe he is concerned about where peak torque happens as a jets' torque absorption curve is MUCH steeper than a prop. You can get away with a "peakier" torque curve with a prop, but with a jet the torque curve must be much flatter. Kind of hard to explain via typing, but to kind of get the idea, if you have a combination that starts to drop hp at ~6500, you would prop for ~6500. If your jet is designed for ~6500 rpm for your speed, then your engine better not fall off till way after 7000 rpm or you will never get to 6500 rpm. hth's
