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lets talk fuel
lets swap stories
lets discuss problems
what do YOU like?
Brad
Race-1.com
lets swap stories
lets discuss problems
what do YOU like?
Brad
Race-1.com
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Funny you posted this. I was planning on calling you in a bit to pick your brain on an issue im having. -
fire away---sharing issues with everyone is always a good thing
If I cannot help --I am sure we can talk it through with someone here
Brad
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What should the carb maintenance be from week to week? We seem to be getting a fair amount of residue!Comment
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what fuel are you on zero?
Brad
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VP Crate HorsepowerComment
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Brad,
Do you see any real performance differences in leaded e-85 race fuel in a drum, and tested good e-85 from the gas pumps at local gas station?I think there should be lifeguards in the genepool.Comment
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zero25--
CHP is tuff on everything
there is no denying the power it makes but it comes with a price--
we recommend running an upper lube with that fuel (marvel mystery oil works fine)
use as directed ---more is not better
beyond that ---anytime the car will sit idle for more than a week---the fuel system should be drained and flushed with a non oxygenated fuel juiced with the same upper lube
also---replace power valves in the carb twice a year
call me with any questions
Brad
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Just add dirt,
E-85 fuel---pump VS race grade
on the dyno we have seen absolutely no difference between race grade (leaded) E85 and "GOOD" pump E85
here is the problem---I am not even going into the ethanol content discussion as I hope everyone already understands the importance of testing the content
BUT ---pump fuels are generally stored underground and anything stored underground is subject to moisture issues
If your station does not move a high volume of e85 there can easily be a moisture issue in your fuel.
it is critical to engine performance to have moisture free fuel that is at a content of 84 to 86 % ethanol
when we have this recipe we do not see any difference in dyno numbers---however we believe in track performance over dyno testing --so if you tell me the one or the other performed better on track we will analyze the situation to form a scientific explanation as to why
sorry to ramble there but there is not a clear answer to your question ---there are variables
Brad
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For a 604 I'm seeing people running 650 and 750 carburetor what's power difference or is one better than the other?Comment
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we lived in 650 land for ever no matter what the fuel because 650's just accelerate better
BUT
recently (last year or so) for E85 we have moved to a bit larger carb for E85 because our builder (Stealth) has figured out a few things to maintain acceleration rate with a little more air to carry the engine at the end.
carb size 101----bigger carbs make power at a higher RPM---smaller carbs accelerate better but lack power on the topside
currently (for most applications) on E85 we use a 700 for 602's which is a 1.300 venturi and 730 for 604's which is a 1.345 venturi but that is Stealth---if I were using a different manufacturer I would quiz them on acceleration VS power
we still use 650's for all gas applications (1.250 venturi)
hope that helps
Brad
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hey brad , just curious , have you done any testing with a E85 500 cfm 2brl on a 602 ?Comment
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I have not had that opportunity----we do have a ton of 2 brl stuff on 602's but it's in an area where they mandate gas
my guess is that it would be awesome
602's love e85 and they do well on 2brl's
I wore myself out trying to improve on the adapter for gas and I believe the adapter for e85 might need some tweeks as well to get the best result
Brad
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ok , the new factory stock class we have requires a 2 brl period , whether a built engine or a 602 ....Comment
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carb size: how to determine
is there a simple way to measure the carb to figure out venturi size and cfm with the E85 specialty carbs that don't have list numbers anywhere on them....Comment
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