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> 911 engine number question
914ltd
post Apr 7 2014, 11:57 AM
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I purchased a 911 magnesium engine case that has an odd serial number seeming authentically stamped in the correct place. 3180259. The case is a 1R series casting number. Any way to check this number out? Thanks! Brad
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ClayPerrine
post Apr 8 2014, 11:32 AM
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Probably a replacement engine that had a blank number plate. There were no mag cases in 68. The dealer installing it probably just put the original engine number on there.
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Jeffs9146
post Apr 8 2014, 11:53 AM
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QUOTE(ClayPerrine @ Apr 8 2014, 10:32 AM) *

Probably a replacement engine that had a blank number plate. There were no mag cases in 68. The dealer installing it probably just put the original engine number on there.


Maybe but I think there were 20 mag cased 911R motors built between 1967 and 1968 for "race only" cars!

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The R designation meant a lightened car with thinner sheet metal and a racing engine with 210 bhp at 8000 rpm. This particular example is one of only 20 made and has an extensive period racing history.


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The 110 PS (81 kW; 108 hp) 911T was also launched in 1967 and effectively replaced the 912. The staple 130 PS (96 kW; 128 hp) model was renamed the 911L. The 911R had a very limited production (20 in all), as this was a lightweight racing version with thin aluminium doors, a magnesium crankcase, twin-spark cylinder heads, and a power output of 210 PS (154 kW).


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Porsche used the Type 901/22 engine from the Carrera 906 to power the 911R. Some of the cars were given mechanical Bosch fuel injection systems while others received Weber carburetors.

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