SiRI and SiRII
- Thread starter SolPWR
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oil bars are different in the head...the sirI has cast oil bars and the sirII has extruded oil bars. first gen as 10.2 compression second gen has 10.4 compression the map sensor is not an integral part of the throttle body on first gen b16's. and a horsepower difference of about 8-10 depending on wear and tear. first gen as twin o2 sensors and the second gen has one four wire o2. if your getting a full swap the axles are different as well as the trannies.
Differences between the SiR and the SIRII are things like powersteering ABS, factory tinted windows etc..., they are trim levels, not motor generations.
As far as th generation differences between the motors, electronics and the aforementined things in 88blues post are the big ones.
As far as th generation differences between the motors, electronics and the aforementined things in 88blues post are the big ones.
and it will be a bitch to wire.
you'll end up buying all sir2 electronics or totally re-wriign for things like distributors, alternators, injectors, and so forth...
and sir1 cams are less lift/duration than sir2's.
if you're planning to buy an sir1 over the sir2 in hopes of it being cheaper- in the end, you will spend more trying to get the sir1 to work, have a mirgraine from wiring, and still be slower than if you jsut bought the damn sir2 in the first place.
you'll end up buying all sir2 electronics or totally re-wriign for things like distributors, alternators, injectors, and so forth...
and sir1 cams are less lift/duration than sir2's.
if you're planning to buy an sir1 over the sir2 in hopes of it being cheaper- in the end, you will spend more trying to get the sir1 to work, have a mirgraine from wiring, and still be slower than if you jsut bought the damn sir2 in the first place.
get the one that matches your OBD (less wiring bullshit)
with that said the first gen B16 has slightly less agressive cams than the second gen B16
SiR-1 and SiR-2 are often misused to describe first and second gen B16 engines... this is NOT accurate
SiR-1 and SiR-2 are vehicle trim levels and have NOTHING to do with the engine themselves the SIR-1 and SiR-2 were BOTH available in the 5th gen chasis
with that said the first gen B16 has slightly less agressive cams than the second gen B16
SiR-1 and SiR-2 are often misused to describe first and second gen B16 engines... this is NOT accurate
SiR-1 and SiR-2 are vehicle trim levels and have NOTHING to do with the engine themselves the SIR-1 and SiR-2 were BOTH available in the 5th gen chasis