86 n/a rotors in 85 13b engine???
#1
Concept Motorsports
Thread Starter
86 n/a rotors in 85 13b engine???
so i was talking to siguel and i asked him if it is possible to use this combination and he said yes and without problems, is there any evidence or proof that the shapes of the rotor housins are different???
#4
Old [Sch|F]ool
Allegedly the rotor housings have slightly different shapes, but I put one next to the other and went around with a straightedge and feeler gauges and I couldn't find a difference anywhere.
#5
Concept Motorsports
Thread Starter
i remembered a link from racing beat claming that it would not work, but i also have a 1974 13b rotor hosing and a turbo II rotor housing and they have the same shape
#7
Right near Malloy
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S3 13B and S4 13B rotors are the same... Same weights, Same compression ratio... The only thing to gain on the S4 N/A rotors is the 2mm Apex seal versus the 3mm on the GSL-SE rotor.
I suggest going S5. They are a pound lighter, each and a 9.7:1 compression versus 9.4:1
I suggest going S5. They are a pound lighter, each and a 9.7:1 compression versus 9.4:1
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