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Re: quad-rotor 565
Originally Posted by RichardCranium572
Might I ask what you paid for them? I have a feeling I am about to be sick :eek:
you probalby don't want to know.... |
Re: quad-rotor 565
Originally Posted by RichardCranium572
Might I ask what you paid for them? I have a feeling I am about to be sick :eek:
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Re: quad-rotor 565
Originally Posted by GPM
We did talk a while back, and yes I do run the Brodix heads, I tried the BB2 extra and the Big Dukes. I think you're making good power, it's more than what's usually posted on here. I wasn't questioning your combo, sounds like you're going to be running pretty good this year.
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Re: quad-rotor 565
Originally Posted by 42MTI
Yes it is the moac. I will be feeding in directly off one stage of the three stage seawater pump with a KE sand strainer.This is all brand new stuff and completely new to me. I have always ran roots blowers in the past.
What computer system are you running? With the water running thru the cooler at idle isn't it suppose to make the fuel puddle in the bottom of the intake ? |
Re: quad-rotor 565
Originally Posted by RichardCranium572
That is pretty rich, suck part is, if you don't have any safety, such as detonation spark/fuel control, then you have to run it rich to keep it further away from "the edge" :( another downside of running too rich besides economy is the carbon buildup can induce detonation after hours of use at that time and if you don't have any detonation control, catastrophic engine failure results :(
What I do is find what AFR the engine makes max power, then "detune" by ~.5 AFR, then allow detonation control to reduce timing if needed, and if detonation control exceeds 5 degrees, the ecu reduces AFR by another full AFR and will still retard timing till detonation is controlled, however if detonation is gone it will start reapplying spark and start the process over. |
Re: quad-rotor 565
Originally Posted by RichardCranium572
I'm not sure you will get enough fuel through the carbs for that kind of hp even with blocking the high speed air bleeds. Start thinking about 55mm roller bearing journals for the cam and oversize diameter lifters for longevity. 18726543 firing order will help with fuel distribution as well as aiding in crankshaft life. If you really want to be leading edge on longevity, think 55mm roller bearing journal and 1" diameter flat tappets with 1.9:1 or 2:1 rocker ratio ;)
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Re: quad-rotor 565
Originally Posted by NOBODY
I'm really supprised you said there will be carbon build up with that much fuel, because with that much HP and comb. temp this does not happen unless you idle for along time. As soon as you go to wide open throttle there will be no carbon I can garentee you. I have run as much as 11.0 at WOT and have never had carbon buildup.
I'll go ahead and retract that statement as truly I have never taken apart an engine that had perfect AFR's everywhere else and was 11:1 and richer at WOT. I have disassembled engines that were at or near 13:1 just about everywhere including decel's(leaner yet when decel enleanment activated) and ~11.8:1 at full power and I did see "some" carbon buildup although not excessive... this was on race gas. In defense of my statement, I think we all have seen the drastic differences in residual carbon left by "pump gas" engines at the same AFR of "race gas" engines. Just about anything richer than stoichiometric with pump gas will leave much higher residual carbon and other deposits and will contaminate the oil sooner. I yeild to your statement and I would think you would agree that it would be better to control the heat at ~12:1 AFR than it would to band-aid control the heat by richening the mixture. |
Re: quad-rotor 565
Originally Posted by NOBODY
I think you should check out CandS carb's, because they have supplied single carbs for blow-through apps that have made over 2000HP even with gas or methanol.
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Re: quad-rotor 565
Originally Posted by Strip Poker 388
What computer system are you running?
With the water running thru the cooler at idle isn't it suppose to make the fuel puddle in the bottom of the intake ? I have heard the fuel pooling thing but I spoke with KE and he said he plumbed all of his motors this way. Also this is the way my last blowermotors were and the way they are run on the dyno, So I hope it will be ok. |
Re: quad-rotor 565
I wouldn't want water running through the cooler at idle. My cooler runs off the LWP on the drive, so the faster you go the more water to the cooler. My first blower engine with a cooler was feed via pump, it caused surges at idle. But now that's not an issue with my new engine.
This also makes it easier to supply the engine with enough water. |
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