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Author Topic: 2L engine with 1.6 gearbox  (Read 259 times)
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Robert
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« on: April 23, 2017, 02:11:39 PM »

Hi, i was thinking to make my car faster on the country roads and in acceleration. Therefore I was thinking to put a 2 L engine with a 1.6 gearbox. Will this make the car faster up to approx 80km per hour. I don't mind that the top speed will go down as long as I can drive 110 KM on the highway. What do you guys think?
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lukasdeopalenica
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« Reply #1 on: April 25, 2017, 02:36:12 AM »

Hi,
it certainly will gain acceleration, but you will need to change gears quickly as well Wink

Have a look at my xls calculations that I did some time ago. Obviously the speeds indicated in the spreadsheet are only theoretical, and on 5th gear, but will give you the comparison between different gearboxes.


* Przechwytywanie.JPG (73.26 KB, 1100x157 - viewed 106 times.)
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peteracs
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« Reply #2 on: April 25, 2017, 01:57:25 PM »

Hi

From previous threads on here and Lancisti, it is mainly the differential which varies, not the gearbox ratios. Happy to be told I am wrong, but seem to remember that this was the case.

Lukas, not sure if that is what your chart shows?

Peter
« Last Edit: May 30, 2017, 05:14:00 PM by peteracs » Logged

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lukasdeopalenica
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« Reply #3 on: April 27, 2017, 03:37:34 AM »

You are right Peter, but as the diff unit is rather an integral part of a transmission so I take it as a black box Smiley

the chart shows both the diff ratios and total at top (5th) gear.
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Subaru Outback 3.0R
Honda CB125 K6 '76 electric blue
Specialized Epic & Stumpjumper
Robert
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« Reply #4 on: April 28, 2017, 07:29:13 PM »

Thank you for your replies.
Apparently it's undiscovered terrain, so not sure how I will proceed. Maybe I will use the standard 2L gearbox, to be on the save side.

cheers, Robert
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squiglyzigly
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« Reply #5 on: July 16, 2017, 10:02:41 AM »

I think sticking with the 2l gearbox is best for one simple reason. The 2l engine has torque and will pull the wider ratios with ease.
In each gear you will go further faster because of the torque. Only if you run a tuned peakey (relatively speaking) 2l engine would lowering the final drive be of much use.
I think this is why later cars that produced more torque (i.e. & vx) had higher final drive again.
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lukasdeopalenica
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« Reply #6 on: July 16, 2017, 12:25:41 PM »

+1
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Lancia Beta HPE 2000i.e. '82 rosso corsa
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Subaru Outback 3.0R
Honda CB125 K6 '76 electric blue
Specialized Epic & Stumpjumper
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