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Automotive Calculators

Calculators and convertors to work out Engine Revs & Speed, MPG, Tyre Heights and Distance

 Engine Codes

Code Model Engine BHP Dates
4-9 Type 1/2 1200 SP 34 May '59 > Aug '65
E Type 1 1300 SP 37 Aug '65 > Jul '70
B Type 2 1600 SP 47 Aug '67 > Jul '70
FO Type 1 1300 SP 40 Aug '65 > Jul '70
H Type 1 1500 SP 44 Aug '65 > Jul '70
H Type 2 1500 SP 44 Aug '65 > Jul '68
L Type 2 1500 SP 40 Nov '65 > Jul '68
AB Type 1 1300 44 Aug '70 > Jul '73
AC Type 1 1300 40 Aug '70 > Jul '70
AD Type 1/2 1600 50 Aug '70 > Jul '73
AE Type 1 1600 47 Aug '70 > Jul '71
AF Type 1/2 1600 46 Aug '70 > Jan '80
AH Type 1 1600 47 Aug '71 > Jan '76
AJ Type 1 1600 50 Aug '74 > Dec '80
AK Type 1 1600 47 Aug '72 > Jul '73
AR Type 1 1300 44 Aug '73 > Jul '75
AS Type 1/2 1600 50 Aug '73 > Jul '79
CJ Type 2 2000 70 Aug '75 > Jul '79
SP=single port



Road Speed & RPM

This will calculate the rpm for any given gear and any given speed, or speed to rpm. Simply fill in the tyre setup then fill in the calculation fields leaving the field you want to calculate empty. Use the transmission table below for reference.

1. Tyre Setup
80% is standard tyre profile
Tyre Width Tyre Profile Rim Size
mm %
2. Calculate
Tyre code:
Gear Ratio: :1
Final Drive: :1
RPM:
Speed:




Typical Transmission Ratios

 

Vehicle 1st 2nd 3rd 4th Rev. FD
Type 1 - Beetle
1.2 30 BHP >'60 3.60 2.07 1.25 0.80 6.60 4.375
1.2 34 BHP '60> 3.60 1.88 1.22 0.89 4.63 4.375
1.3 >'66 3.80 2.06 1.32 0.89 3.88 4.375
1.5 >'66 3.80 2.06 1.32 0.89 3.88 4.125
1.3 '66> 3.80 2.06 1.26 0.89 3.61 4.375
1.5 '66> 3.80 2.06 1.26 0.89 3.61 4.125
1303 3.80 2.06 1.26 0.93 3.80 3.875
Auto '70-79 2.06 1.26 0.89 - 3.07 4.125
 
Type 2 - Split Screen
36 BHP 3.60 1.88 1.22 0.79 4.63 4.375x1.40=6.125
'60-'61 3.80 2.06 1.32 0.89 3.88 4.125x1.39=5.73
'65 3.80 2.06 1.21 0.82 3.88 4.125x1.26=5.20
'66-'67 3.80 2.06 1.26 0.82 3.88 4.125x1.26=5.20
 
Type 2 - Transporter '68-'79
1.6/1.7 3.80 2.06 1.26 0.82 3.80 5.375
213 2068548 > 3.80 2.06 1.26 0.89 3.80 5.375
1.8 3.80 2.06 1.26 0.89 3.79 5.492
2.0 3.80 2.06 1.26 0.89 3.61 4.857
Auto 2.0 2.55 1.45 1.00 - 2.46 4.26 or 4.45
Other autos 2.65 1.59 1.00 - 1.80 4.36 or 4.45
 
Type 3 - Fastback, Notchback and Variant
'65-67 3.80 2.06 1.32 0.89 3.87 4.125
'71-'72 3.80 2.06 1.26 0.88 3.61 3.875
'72-'77 3.78 2.06 1.26 0.89 3.79 3.875
 
Karmann Ghia
1956 3.60 1.88 1.23 0.82 4.63 4.43
 
New Beetle
1.8T 3.30 1.94 1.31 5th 0.84 3.06 3.94
Data taken from a variety of sources



Fuel Consumption

Calculate your mpg. Tip: You can enter a mpg figure in the MPG field to just convert to Metric and U.S.



Fuel bought in pence: p (i.e. 1200 = £12)
Pence per litre: p
Miles travelled:
 
MPG: Imperial gallons
Convert Result
   
Litres/100Km: MPG:



Tyre Heights

Compare different tyre and wheel combinations. To keep speedometer readings accurate keep to within 2.5%.
NB Not all combinations are available as tyre sizes. A tyre profile of 80% is considered standard size.



Original Tyre Size
Width mm Profile % Rim size  inch  mm
New Tyre Size
Width mm Profile % Rim size  inch  mm
Difference in Diameter: -
% = mm



Distance

Convert miles to kilometers and kilometers to miles.



Miles Km

 

 

 

 

 

 

 




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