Question about the xflow engines 1598cc and the 1601cc ???

[72mk1escort]

My Dad had a mexico which was a 1974 and it had a 1601cc engine he remembers being told that ford had to do this so they could qualify for the rallys.

 

He friend used to have an earlier mexico and that had a 1598cc engine

 

I know one is 3cc more but did they have to be over 1600cc or something so they could rally them as they had to produce road going versions.

 

Another thing i wouldnt mind knowing is are the two engines the same spec (Horse Power, Torque etc) and does anyone know how they gained the extra 3cc?

 

[emu]

They were all 1598 werent they? I understood it that ford said they were 1601 for Homologation reasons??

[V8ian]

Never heard of 1601, but its probably not hard to acheive, if you check the maching tollerences, and take the bore size to the max on the first bore, and take into account the +/- on the throw of the crank, 3cc is an easy thing too obtain

[MexDan]

Yeah its to do with homologation, so that the x/flow block could be used when cosworth built the bda head.. the 1601 is the reported machining tolerance figure as far as i know...

[livewire7116]

Rumour was it was juggle with the figures as they were winning everything in thier class at time so by saying it was a 1601 meant they moved upto the more competative class

[72mk1escort]

Here is the details for my Dads Escort MK1 Mexico as you can see its a 1601cc :

 

The enquiry is complete

The vehicle details for *** **** are:

 

Date of Liability 01 10 1990

Date of First Registration 15 03 1974

Year of Manufacture Not Available

Cylinder Capacity (cc) 1601CC

CO2 Emissions Not Available

Fuel Type Petrol

Export Marker Not Applicable

Vehicle Status Unlicensed

Vehicle Colour WHITE

[lotusless]

i had a gen mk1 mex years back + the log book

had 1601cc on it too, it was for racing purposes

[tim]

mexico can have at least 3 different CC on the log book

[morcheen]

seen a mk1 mex sitting in a garden today and checked the reg on the dvla site,came back as 1601cc too. i read somewhere it was put up to 1601 to be in the 1600 to 2000 class

[Billy_smith]

i have heard that earlier mexicos had the earlier cross-flow as wos in a 1600E, not the 711 whereas the later ones ran a 711 not sure whether its true

[emu]

Here is the details for my Dads Escort MK1 Mexico as you can see its a 1601cc :

 

The enquiry is complete

The vehicle details for *** **** are:

 

Date of Liability 01 10 1990

Date of First Registration 15 03 1974

Year of Manufacture Not Available

Cylinder Capacity (cc) 1601CC

CO2 Emissions Not Available

Fuel Type Petrol

Export Marker Not Applicable

Vehicle Status Unlicensed

Vehicle Colour WHITE

 

Thats what it says, its not necessarily what the real capacity was

 

I beleive that if the class limit is 1600cc then you cant enlarge the engine past that and so limit the maximum power you can wring out of the engine. By claiming that the engine was 1601cc it put it into the larger capacity class and so it could be enlarged as far as possible and tuned accordingly

 

Because the model was raced in production classes it would require a certain number of road cars to be produced to prove its production status, hence the 1601cc thingy

[72mk1escort]

Thanks for the info guys