Compatibility of Turbo/Tranny?

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Old Jan 25, 2005 | 05:21 AM
  #1  
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Default Compatibility of Turbo/Tranny?

Ok Well I am finally going to be purchasing a turbo kit. I have been delaying awhile b/c all the kits are too expensive and I have been to busy with work and school to start building one myself. However, recently I had some luck with a buddy of mine who will sell me his drag kit for a b-series with ic piping and ic for 1200. The turbo has no shaft play and it ran very good on his car. So in a few weeks I should be purchasing it from him.

My only question is this, I traded my hybrid hatch for a 95 gsr integra that has an ls motor/b16 tranny w/ls 5th gear. At first I was very happy with the tranny and still am, but I kinda would rather have the ls tranny for turbo. Either way I think I may keep the b16, but will this be a smart move? Its a t3/t4 turbo, not sure of the size, but Im sure its not too big.

Any thoughts on this?
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Old Jan 25, 2005 | 06:35 AM
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Default Re: Compatibility of Turbo/Tranny? (Spooled-U)

Keep the tranny that is in it. That sounds perfect to me. b16 gears for beating on it and ls 5th for highway driving. What more could you ask for.
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Old Jan 25, 2005 | 06:54 AM
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Default Re: Compatibility of Turbo/Tranny? (underpressure02)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by underpressure02 &raquo;</TD></TR><TR><TD CLASS="quote">Keep the tranny that is in it. That sounds perfect to me. b16 gears for beating on it and ls 5th for highway driving. What more could you ask for. </TD></TR></TABLE>

Exactly. That is a perfect setup. Keep it.
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Old Jan 25, 2005 | 08:25 AM
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Default Re: Compatibility of Turbo/Tranny? (Blown90hatcH)

If you have no plans for a VTEC head you might want to look into an LS transmission. The shorter B16 gears work great when you can turn 9000 RPM's in a VTEC motor, but when you're only turning 7000 RPM's in an LS setup they ain't so hot. With a 7000 RPM rev limit you're topping out fourth gear at UNDER 100 MPH with a B16 trans. With a 24.5" slick you can only hit 105 MPH, which means you're going to be shifting into 5th gear before the end of the 1/4. That means you're going to booooogggggggg down bigtime. Just my 2 cents mixed with a bit of personal experience.
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Old Jan 25, 2005 | 08:46 AM
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95GSRTT
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Default Re: Compatibility of Turbo/Tranny? (@lbert)

Im just gonna stick with my LS tranny and rev it out to 8500 either way My car is pretty much a daily driven car, and Im not too worried about a few tenths in the quarter mile. Im not going for the fastest car, b/c I know I wont be either way.

Just decide what it is you want to do with the car. If its gonna be daily driven you might wanna go with the LS, if you want it for drag then get a different tranny definitely. Everyone on HT will say go for the shorter geared one, b/c everyone on here is a professional racer and being as fast as you can go is the most important thing ever!!
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Old Jan 25, 2005 | 09:13 AM
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Default Re: Compatibility of Turbo/Tranny? (95GSRTT)

My boy, Tony Starks on this site uses a GSR with an LS fifth and he loves it. Stick with the one you have. The LS fifth is great on the highway.
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Old Jan 25, 2005 | 10:43 AM
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closer/shorter gears are always better for acceleration, as long as you can hook the car up.

that ls 5th is a wonderful thing.
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Old Jan 25, 2005 | 10:51 AM
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Default Re: (redzcstandardhatch)

Yea I would stay away from ls 1st and 2nd gear, seeing as I have one. With the turbo, my 1st and 2nd gears are useless. It just revs out so damn fast its ridiculous.
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Old Jan 25, 2005 | 04:43 PM
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Default Re: Compatibility of Turbo/Tranny? (95GSRTT)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Frank Castle &raquo;</TD></TR><TR><TD CLASS="quote">My boy, Tony Starks on this site uses a GSR with an LS fifth and he loves it. Stick with the one you have. The LS fifth is great on the highway. </TD></TR></TABLE>

Remember I am talking about a b16 tranny, not b18. The gearing is definetly alot shorter between the two.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95GSRTT &raquo;</TD></TR><TR><TD CLASS="quote"> Everyone on HT will say go for the shorter geared one, b/c everyone on here is a professional racer and being as fast as you can go is the most important thing ever!! </TD></TR></TABLE>

Actually the LS is setup better for a turbo setup b/c those long gears come in handy when your only revving to 7000 or maybe a little more. @lbert pretty much summed it up with this:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by @lbert &raquo;</TD></TR><TR><TD CLASS="quote">If you have no plans for a VTEC head you might want to look into an LS transmission. The shorter B16 gears work great when you can turn 9000 RPM's in a VTEC motor, but when you're only turning 7000 RPM's in an LS setup they ain't so hot. With a 7000 RPM rev limit you're topping out fourth gear at UNDER 100 MPH with a B16 trans. With a 24.5" slick you can only hit 105 MPH, which means you're going to be shifting into 5th gear before the end of the 1/4. That means you're going to booooogggggggg down bigtime. Just my 2 cents mixed with a bit of personal experience.</TD></TR></TABLE>

So what to do with the b16 tranny if I am gonna keep it b/c that looks like whats gonna happen? I mean how much more can the stock ls blocks handle past 7000 rpms? I just would hate to think of being at 100mph and @ redline in 4th gear.....thats kinda shitty now that I look back at my gsr'd hatch when I would just be shifting into 4th at 100mph (and chirping the tires as well )

Ok so is there any bright side to this?
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Old Jan 25, 2005 | 06:29 PM
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95GSRTT
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Default Re: Compatibility of Turbo/Tranny? (Spooled-U)

LOL 1st you ask whether you should keep it and then YOU tell me that the LS is better suited for turbo b/c of he long gears? The only reason to go with an LS tranny is for Top Speed, gas mileage, or if you have crazy traction issues. And even then Its better to try a different way to get traction.

Just b/c you have a turbo doesnt mean long gears is better. Who ever told you that needs to stop spreading this info.
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Old Jan 26, 2005 | 05:07 AM
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Default Re: Compatibility of Turbo/Tranny? (95GSRTT)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95GSRTT &raquo;</TD></TR><TR><TD CLASS="quote">LOL 1st you ask whether you should keep it and then YOU tell me that the LS is better suited for turbo b/c of he long gears?</TD></TR></TABLE>

Sorry for any confusion. Your correct, at first I was trying to determine wether or not to keep the tranny when I go turbo. Then I made this decision to keep it b/c I am too busy with work and school to search for an ls tranny and have the time and day to swap them.

I was merely trying to figure out now if it is worth it or should I wait till I have the time to put the ls tranny back.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95GSRTT &raquo;</TD></TR><TR><TD CLASS="quote">The only reason to go with an LS tranny is for Top Speed, gas mileage, or if you have crazy traction issues.</TD></TR></TABLE>

A.) Top Speed? Maybe the issue of comfortability when your on the highway. I think your missing the point of longer gears in general. This IS better suited for a turbo setup when your talking in terms of quarter mile slips when comparing both tranny's. If I am topping out in 4th gear @ under 100, then that will pose an issue on the strip. However it would be funny to go through all 5 gears before I finish. Gas mileage: Your correct! And as for traction issues....Its a honda and there's already traction issues without the turbo. Of course I will have traction issues. Right now first and second gears fly through the rpms, Im scared to see how quick it will rev with the turbo setup.

Ok sorry to get ot, Basically since I am keeping the tranny, How much more is the block good for when dealing with redline. (safely)
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Old Jan 26, 2005 | 07:34 AM
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95GSRTT
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Default Re: Compatibility of Turbo/Tranny? (Spooled-U)

You must have misunderstood. When I said top speed, I meant top speed. As in you want to get into 160-170. That b16 tranny aint gonna do that, and either will the gsr more than likely.

Either way its ultimately your decision. I havent ever heard of anyone having to shift into 5th under 100 mph, unless they are using a very very small tire. But thats from my experience.
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Old Jan 26, 2005 | 10:30 PM
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Default Re: Compatibility of Turbo/Tranny? (Spooled-U)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Spooled-U &raquo;</TD></TR><TR><TD CLASS="quote"> Remember I am talking about a b16 tranny, not b18. The gearing is definetly alot shorter between the two.</TD></TR></TABLE>

That is correct, but I can tell you my friend used an LS tranny on his ls turbo, hondata tuned, and it licked *****. While the gears are a LITTLE shorter on the B16 vs. the B18, he doesn't want to go to LS gearing. Keep the short gear tranny and put money into traction. Serious traction.
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Old Jan 27, 2005 | 12:20 AM
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you would need alot of revs or tall tires to get 170 out of an ls tranny.. we ran the numbers on my ls tranny for ***** and giggles one day.. 5th with 205/60/14's 6750rpm was 155mph

i guess if you were spinning 9krpm you'd be movin!
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Old Jan 27, 2005 | 07:23 AM
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Default Re: (Zakar)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Zakar &raquo;</TD></TR><TR><TD CLASS="quote">you would need alot of revs or tall tires to get 170 out of an ls tranny.. we ran the numbers on my ls tranny for ***** and giggles one day.. 5th with 205/60/14's 6750rpm was 155mph

i guess if you were spinning 9krpm you'd be movin!</TD></TR></TABLE>

Haha my thoughts exactly....And where would you be doing 160-170 anyway even if you could achieve it? Hopefully not on the street

Anyways I still have the question of how much more can I rev safely on the stock block?

Thanks Guys for all the help
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Old Jan 27, 2005 | 07:52 AM
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95GSRTT
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Default Re: (Zakar)

On my 17s I pegged 150 at around 5500 rpms. It really wouldnt be that hard to get 170 revving to 8k. And Im just saying thats one of the reasons to get an LS tranny if thats what you wanted to do. Not that you should lol
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Old Jan 27, 2005 | 08:47 AM
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Default Re: (Zakar)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Zakar &raquo;</TD></TR><TR><TD CLASS="quote">you would need alot of revs or tall tires to get 170 out of an ls tranny.. we ran the numbers on my ls tranny for ***** and giggles one day.. 5th with 205/60/14's 6750rpm was 155mph

i guess if you were spinning 9krpm you'd be movin!</TD></TR></TABLE>

9000 RPM's with a typical 23.1 tire in an LS tranny is over 200 MPH

9000 RPM's with a B16 tranny is damn near 170 MPH. With a GSR it's almost 180.

Also, 8000 RPM's in 5th with an LS trans/23.1" tire is 181 MPH.
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