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New Engine Dyno Results - Constructive Thoughts

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Old 03-27-2010, 09:02 AM
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Question New Engine Dyno Results - Constructive Thoughts

Thanks for the input!

Last edited by DucBoy; 04-01-2010 at 10:39 AM. Reason: Question Answered
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Old 03-27-2010, 09:52 AM
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why just a 850 seems small to me i run 1050's on a lot smaller motors and when going from a 850 on a 540 to a 1050 i made 30 more hp
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Old 03-27-2010, 09:59 AM
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TQ curve is nice and flat hp # look pretty good for that cam and carb
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Old 03-27-2010, 11:19 AM
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The way I read it he is running 2 850's.....
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Old 03-27-2010, 11:33 AM
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could be, i thought he was talking about 2 motors
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Old 03-27-2010, 11:43 AM
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Torque seems low to me also.

My N/A 540 made 685hp/682tq with AFR 305 cnc's, a 1050 dominator carb, a victor intake, a 1" supersucker carb spacer, 9.4 lbs of compression, and a RMBuilder cam. This was with all accessories running, and through wet exhaust on 92 octane fuel. Bob told me I could have picked up another 20-25 hp with a set of AFR 315's, but I didnt have the coin at the time.

I would contact Bob Maderia aka RMBuilder for setting up that motor combination. I am willing to bet your cam is not ideal for your motor among other things.

His number is: 585-654-8583

Chris

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Old 03-27-2010, 11:52 AM
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Be Happy the drives will not hold what you have now..

just my 02ct.
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Old 03-27-2010, 11:52 AM
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Thanks for the responses. Single 850 (two motors, one carb each). Used the 850s because I had them on the shelf - I think moving up to 1050s would make sense.

I should elaborate that my goal was usable power over the full range (including idle - it's a ways from the dock to the open water) with long-term engine reliability. I'm more of a fast cruise than an all-out race kind of boater.
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Old 03-27-2010, 11:54 AM
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Quote:
Originally Posted by customryder View Post
Be Happy the drives will not hold what you have now..

just my 02ct.
Yes, that is my next chore - learning how to rebuild drives...
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Old 03-27-2010, 12:12 PM
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they also make a 1000cfm carb on a 4150 base , you could try without having to change the intake. But on the 540 that i got 30 hp out of with the 1050 we used a adapter for a 4500 to a 4150 intake i am sure a large intake would have made more.i am doing a 496 now and we plain to use a 1050 i did 2 of these 3 years ago and made 640 apiece so we are doing one more killer is the 496 made more power with the 1050 also.
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