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highway RPM's

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Old 06-04-2008, 06:42 PM
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Default highway RPM's

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?
Old 06-04-2008, 06:57 PM
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Default Re: highway RPM's (grandtheftlunchbox)

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
Old 06-04-2008, 07:15 PM
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Default Re: highway RPM's (Kinfer)

i know the Si has shorter gearing, so it will be higher than the DX. i guess ill have to start calculating. haha.
Old 06-04-2008, 07:16 PM
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Default Re: highway RPM's (grandtheftlunchbox)

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
Old 06-04-2008, 07:20 PM
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Default Re: highway RPM's (Davus)

mines 94
Old 06-04-2008, 08:42 PM
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Default Re: highway RPM's (Davus)

fail. final drive is also a factor. those two trans have diff final drive ratios.
Old 06-04-2008, 09:10 PM
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Default Re: highway RPM's (Davus)

<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.
Old 06-04-2008, 10:10 PM
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Default Re: highway RPM's (grandtheftlunchbox)

i have an si tranny

and at 70mph i'm around 2900 or 3000 but definately not over 3,000.
Old 06-04-2008, 10:55 PM
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Default Re: highway RPM's (androO)

im @3500 at 80 ex tranny
Old 06-05-2008, 04:15 AM
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Default Re: highway RPM's (roycivic92)

I'm at 3500 @ 55 mph
Old 06-05-2008, 12:41 PM
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Default Re: highway RPM's (gibsanez)

at 65 you are crusing at 2900 to 3 grand and at 70 your just crusing at around 3100 or 3300?
Old 06-05-2008, 01:14 PM
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Default Re: highway RPM's (blkegcoupe)

at 70 MPH it will be at 3000 RPM
Old 06-05-2008, 01:52 PM
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93 si 5 speed, (del sol)
3200 @ 70mph
Old 06-05-2008, 02:03 PM
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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.
Old 06-05-2008, 02:17 PM
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70- 4k Si Tranny
Old 06-05-2008, 02:34 PM
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Default Re: (RedValve)

fatboyraceworks.com
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