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#1
what rpm for 3 speed auto?
a12datto120y
Posted on: 2011/11/21 13:00
hi i was wandering with my 3 speed auto with an a12 at 80km/h it sits at 3000rpm and at 100km/h its around 3200rpm im guesing this is normal as the transmission reaches 3rd gear. But it seems a bit high to me?
Thanks!  
#2
Re: what rpm for 3 speed auto?
bige
Posted on: 2011/11/21 17:54
you may have the wrong diff ratio. how does it take off in 1st.
#3
Re: what rpm for 3 speed auto?
a12datto120y
Posted on: 2011/11/21 23:23
hi well in first gear it takes of preety normal. Any ideas what rpm should it be roughly around?
#4
Re: what rpm for 3 speed auto?
D
Posted on: 2011/11/22 0:06
sounds good to me from a 120y with the heaver body
otherwise the economy wont be flash.
#5
Re: what rpm for 3 speed auto?
a12datto120y
Posted on: 2011/11/22 0:09
thanks for the clarification.
#6
Re: what rpm for 3 speed auto?
D
Posted on: 2011/11/22 1:41
My old datsun 1000 vb10 sat at 3200 on 100kph
and had good economy same as the kb10 coupe I had so if you think its too noisy then you could go for a 3.7 or 3.9 if it has the 4.11 at the moment but if it has the original diff ratio in her you could try slightly larger diameter tyres or wheel combo.
#7
Re: what rpm for 3 speed auto?
ddgonzal
Posted on: 2011/11/22 4:11
The A12 can cruise at 4000 RPM all day, so it is good to go at only 3200 RPM.
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