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TSX 06-08 & Si 06-09 Comparison

28296 Views 97 Replies 21 Participants Last post by  Chalán k20z3
Since I have a set of 2005 TSX (K24a2), 2009 Si (k20Z3), and 2008 TSX (K24a2) cams in my room. I might as well make a comparison for you guys. I'll will throw in Skunk2 Stage 1 cams numbers in too.

Measurement from a caliper:

2005 TSX K24a2
Intake Lobes
PRI: 33.4mm
SEC: 33.4mm
VTEC: 35.14mm

Exhaust Lobes
PRI: 33.1mm
SEC: 33.1mm
VTEC: 35.1mm

2009 Si K20Z3
Intake Lobes
PRI: 32.66mm
SEC: 32.82.4mm
VTEC: 35.49mm

Exhaust Lobes
PRI: 32.65mm
SEC: 32.7mm
VTEC: 34.7mm

2008 TSX K24a2
Intake Lobes
PRI: 33.42mm
SEC: 33.42mm
VTEC: 35.52mm

Exhaust Lobes
PRI: 33.09mm
SEC: 33.09mm
VTEC: 35.09mm

Skunk2 Stage 1
Intake Lobes
PRI: 33.9mm
SEC: 34.6mm
VTEC: 36.3mm

Exhaust Lobes
PRI: 34.54mm
SEC: 34.54mm
VTEC: 35.62mm

Intake cam TSX vs Si (TSX VTEC lobe has more duration but about the same lift)
Left side is the Si and the right side is the TSX

Exhaust cam TSX vs Si (Si Vtec lobe has more duration but less lift)

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1 - 5 of 98 Posts
no offense but you bought the wrong car if u want a torque monster lol. i am def considering the tsx cams as well. only thing is im kind of aggreeing with the fella above. i dont wana do this cam swap more than once. i want hp. its a honda. not gonna have crap for low end to begin with but any extra will still help. ive been thinking of going gopower as well. but do not have the funds. i want more HP n/a. if i only gain like 5 peak whp with an 06 tsx cam swap ima be pissed.
the tsx intake came and si intake cam are very very similar. barely any difference. its the exhaust cam that has a little higher lift.

i am also waiting to see yours gains as well. i truely wana know and this would be the ultimate deal maker if u get nice gains.
no need to change the factory valvetrain on the si with just drop in cams like tsx. the valvetrain on the si is stronger than the tsx valvetrain anyways. tsx does not use as much lift as we do. hence the reason why we gain power from increasing the valve lift on the tsx cams.
from what ive been told tsx exhaust cam and jdm type r intake cam is the way to go for supercharged applications. because of the sweet duration.
all tsx throttle bodies work fine. u get flashpro and they are perfect. some ppl say they dont get rev hang and some do. i dont understand that one but ok. i got rev hang with my tsx throttle body install. FP killed that quickly
1 - 5 of 98 Posts
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