Ap1 engine with ap2 tranny dyno/power info request
#1
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Thread Starter
Ap1 engine with ap2 tranny dyno/power info request
To start off, I apologize if this is the wrong section to ask, but as I was in a popular conversation about swapping the ap2 transmission into an ap1, a remark was made about having a power loss or a drop off in vtec after 8400. His information was based on asking local tuners but I thought it would be helpful to see if it actually happens on dyno.
No I'm not knowledgable about gearing and I guess I don't have common sense on my side when it comes to this. Maybe someone can explain more about it or if there's someone who has a dyno sheet of this combo, it would ease my mind.
A friend told me the transmission has nothing to do with how the engine makes power. I know the ap2 has shorter gearing due to the secondary reduction gearing, but does that actually affect the power band up to 9k? Thanks in advance, and I apologize again if this question is dumb, I've searched trying to find my definite answer so I wouldn't have to embarrass myself.
No I'm not knowledgable about gearing and I guess I don't have common sense on my side when it comes to this. Maybe someone can explain more about it or if there's someone who has a dyno sheet of this combo, it would ease my mind.
A friend told me the transmission has nothing to do with how the engine makes power. I know the ap2 has shorter gearing due to the secondary reduction gearing, but does that actually affect the power band up to 9k? Thanks in advance, and I apologize again if this question is dumb, I've searched trying to find my definite answer so I wouldn't have to embarrass myself.
#5
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Thread Starter
I heard only because the ap2 synchros are carbon fiber instead of the brass ap1 have so it's just stronger in that aspect. 5th or/and 6th gears are longer in the ap2 for better highway driving I hear, but not so good if your boosted because 1st and 2nd will have the shorter reduction gearing or something like that.
This is just what I read, I've seen a lot of threads about the swap, just couldn't find any info. on this matter, probably for a reason lol.
This is just what I read, I've seen a lot of threads about the swap, just couldn't find any info. on this matter, probably for a reason lol.
#6
I have the ap1/ap2 combo, I did the swap about 8 months ago. I did notice a little better shifting feel with the ap2 transmission, other than that though I'd say the difference is negligible. 6th gear is a bit more highway-cruising friendly, and I do notice a little bit of difference in the lower gears, but it isn't anything too crazy.
#7
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Thread Starter
I have the ap1/ap2 combo, I did the swap about 8 months ago. I did notice a little better shifting feel with the ap2 transmission, other than that though I'd say the difference is negligible. 6th gear is a bit more highway-cruising friendly, and I do notice a little bit of difference in the lower gears, but it isn't anything too crazy.
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#8
^ nope, not at all! Strong all the way up to 9k. The gearing isn't THAT much different than an ap1, there's a chart on here somewhere that lists all the gear ratios for every gear. Just some slight differences, the final drive gear is still the same.
#9
AP1 6-speed, close-ratio Primary Gear Reduction:1.160
1st gear - 3.133
2nd gear - 2.045
3rd gear - 1.481
4th gear - 1.161
5th gear - 0.970
6th gear - 0.810
Reverse - 2.800
Final Drive - 4.10 with Torque-Sensing Limited-Slip
AP2 6-Speed Transmissions Gear Ratios: Primary Gear Reduction - 1.208
1st gear - 3.133
2nd gear - 2.045
3rd gear - 1.481
4th gear - 1.161
5th gear - 0.942
6th gear - 0.763
Reverse - 2.800
Final Drive Ratio - 4.100
This is what I found through searching, if someone can verify the accuracy that'd be great.
1st gear - 3.133
2nd gear - 2.045
3rd gear - 1.481
4th gear - 1.161
5th gear - 0.970
6th gear - 0.810
Reverse - 2.800
Final Drive - 4.10 with Torque-Sensing Limited-Slip
AP2 6-Speed Transmissions Gear Ratios: Primary Gear Reduction - 1.208
1st gear - 3.133
2nd gear - 2.045
3rd gear - 1.481
4th gear - 1.161
5th gear - 0.942
6th gear - 0.763
Reverse - 2.800
Final Drive Ratio - 4.100
This is what I found through searching, if someone can verify the accuracy that'd be great.