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Re: 2017 Winter Upgrade/Update thread

Subject: Re: 2017 Winter Upgrade/Update thread
by rklessdriver on 2018/2/20 14:55:58

We put in a ton of work on the dyno.

The engine tuned and ran very well on VP C23 fuel with my AED carburetor which is what I intend to race the car with this season. AF curve was beautiful. 12.7@4900RPM tapering to 12.9@7500RPM.

785HP@7400RPM 614TQ@6200RP.

Now many may think this is a high RPM engine and it is but it still puts down over 500TQ@4500RPM the lowest RPM I pulled it (you don't normally start a dyno pull on a racing engine very far below peak TQ). It also carries 500TQ to nearly 8,000RPM. Very flat TQ curve for an engine of this magnitude.

The engine was not happy on VP Q16 fuel at all. Spent alot of time fooling with jetting and air bleds in both my AED and C&S carburetors to no avail.... the fuel curve looked horrific no matter what I did. Starting out around 12.5@5000RPM then going pig rich 11.5@6000RPM and then tapering to lean at 13.2@7500RPM.

Still made 773HP@7000RPM 613TQ@6200RPM with the C&S.

Made 562HP@7000RPM and 602TQ@5600RPM with the AED.

Both carburetor companies said I was wasting my time trying to run oxgenated fuel in a carburetor not built specifically for it.... had to prove it to myself and I guess I did.

The engine may have been able to touch 800HP with a proper Q16 carburetor... but we will never know.

All and all I thrilled with the engine and the changes I made to it. This is the end of me developing this engine. I am going to run it few more years and begin development of something "Bigger and Better" next year. I hope to have "Bigger and Better" in the car for the 2020 season.

Thanks for all the support. I hope everybody enjoyed the glimpse into what it takes to make this kind of power with 1955 technology.
Will
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