i'm doing an auto-to-manual swap and i have a 93 si trans. what kinds of RPM's can i expect doing about 70 on the highway?

 

i have a d16z6 engine and at 70mph i hit a little less than 3000rpm on 5th gear, does that help? But i have a dx trans, i don't know how different it will be on the si trans

 

i know the Si has shorter gearing, so it will be higher than the DX. i guess ill have to start calculating. haha.

 

Ah no worries, the 5th on the DX and Si were the same from the transmissions I've compared (I'm in market for a 5-speed swap). Should be the same, could be different depending on year of transmission, of course.

[edit to not bump old post: Right, I forgot about final drive.]


Modified by Davus at 3:23 AM 9/2/2008

 

mines 94

 

fail. final drive is also a factor. those two trans have diff final drive ratios.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Kinfer &raquo;</TD></TR><TR><TD CLASS="quote">i have a d16z6 engine and at 70mph i hit a little less than 3000rpm on 5th gear, does that help? But i have a dx trans, i don't know how different it will be on the si trans</TD></TR></TABLE>

The Dx trans has longer gearing, you will not be doing under 3k at 70mph with and si trans.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Davus &raquo;</TD></TR><TR><TD CLASS="quote">Ah no worries, the 5th on the DX and Si were the same from the transmissions I've compared (I'm in market for a 5-speed swap). Should be the same, could be different depending on year of transmission, of course.</TD></TR></TABLE>

That doesn't mean the transmissions are the same.

Op with and si trans you should be doing about 3500-4k going 70 mph. If its gas your worried about It's not that big of a deal.

I have a y8 running on a y5 ecu with a 95 si trans and I still get 40 miles to the gallon with no spirited driving.

 

i have an si tranny

and at 70mph i'm around 2900 or 3000 but definately not over 3,000.

 

im @3500 at 80 ex tranny

 

I'm at 3500 @ 55 mph

 

at 65 you are crusing at 2900 to 3 grand and at 70 your just crusing at around 3100 or 3300?

 

at 70 MPH it will be at 3000 RPM

 

93 si 5 speed, (del sol)
3200 @ 70mph

 

well on my LS swap with a b16 tranny I was at 3K at 70mph 4K at 80mph. This is with my LS/VTEC swap as well.

 

70- 4k Si Tranny

 

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