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Posted

A 1964 Studebaker Daytona, equipped with the optional R3 engine, four speed transmission, and 3.31 rear end ratio,    was/is capable of an honest …..?….. MPH in first gear.

1) 50…..2) 55…..3) 60….or.…4) 65

Posted (edited)

Calculating this would require stipulating the engine RPM at which we would wind up the engine.  I would pick 6200 RPM, the red-line on the tachometer.

Without actually doing the calculation I will guess 60 MPH.

--Dwight

R5407 - R3 tach (7) - Copy - Copy.JPG

Edited by Dwight FitzSimons
Posted
4 hours ago, Dwight FitzSimons said:

Calculating this would require stipulating the engine RPM at which we would wind up the engine.  I would pick 6200 RPM, the red-line on the tachometer.

Without actually doing the calculation I will guess 60 MPH.

--Dwight

R5407 - R3 tach (7) - Copy - Copy.JPG

Great looking R3 tach… thanks for posting!

However 60 MPH is not the answer!

Posted

With that gear ratio, I think it woud be screaming at #2. 55 mph in 1st gear. 

Posted
13 hours ago, Stacey said:

With that gear ratio, I think it woud be screaming at #2. 55 mph in 1st gear. 

Yes, that engine would be revving up quite high, however 55 MPH isn’t the answer!

Posted
13 hours ago, Nelson said:

“An honest 65 miles per hour in first” It did have the optional 2.20 first gear.

I don’t think I’d want to be in the car at that point… but  yes, 65 MPH is the answer!

(According to Bill Carroll’s evaluation of the #3 Bonneville prepped Studebaker Daytona.)

Posted
1 hour ago, mfg said:

I don’t think I’d want to be in the car at that point… but  yes, 65 MPH is the answer!

(According to Bill Carroll’s evaluation of the #3 Bonneville prepped Studebaker Daytona.)

Actually that test was of the #1 Daytona R3 convertible. The #3 was an R4.

Posted
1 hour ago, Nelson said:

Actually that test was of the #1 Daytona R3 convertible. The #3 was an R4.

Got it!….. I always confuse those two remarkable automobiles.

Posted
17 hours ago, Nelson said:

“An honest 65 miles per hour in first” It did have the optional 2.20 first gear.

Aha!  With a 2.20 first gear I can see it.

BTW, R3s (& R4s, I assume) can indeed rev beyond 7000 RPM.

--Dwight

Posted (edited)
12 hours ago, Nelson said:

Dwight. I bet you can recall the R3/R4 break-in procedure. After 750 miles(?) the engine can be taken to 7000 RPM. 

Just from memory that sounds about right.  R3/R4 engines were built precisely and with loose clearances, so I assume those facts would mean the break-in time could be shorter.  I'm not sure that I waited, though, with R3 no. B-86 back in the late 1960s.

Well. I'm off to Morgantown!

--Dwight

Edited by Dwight FitzSimons

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