 High Revv, Light Weight, What am I missing?/Different type of Conversion |
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| Gunn1 |
 Mar 5 2016, 09:13 AM
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#21
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Senior Member  Group: Members Posts: 1,021 Joined: 14-February 16 From: Minnesota Member No.: 19,670 Region Association: None  |
With all of the talk about light weight, high horsepower replacement engines for our favorite Porsche, have we forgotten all of the lightweight, high revving 4 strokes out there? There are dozens of possible alternatives currently being housed in various motorcycle brands. Are there any working examples of this type conversion out there? Thinking besides the lightweight, they tend to be compact and have smaller cooling, electrical and mechanical systems. Would seem using one for a conversion would be a no brainer. What am I missing?
Thanks |
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| jd74914 |
Mar 5 2016, 02:17 PM
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#22
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Its alive Group: Members Posts: 4,782 Joined: 16-February 04 From: CT Member No.: 1,659 Region Association: North East States |
You're really transmission limited. Acceleration is a function of tractive force which is a function of transmission output torque. You just need a transmission geared for the engine you want and you'll be good to go. The stock bike transmission really isn't geared correctly for our application, but if you had more car-friendly gear ratios it could work. In the Miata link they remove the bike transmission from the equation altogether to solve that problem.
The Miata build link is super cool, thanks! |
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Posts in this topic
gunn1 High Revv, Light Weight Mar 5 2016, 09:13 AM
JOEPROPER
With all of the talk about light weight, high hor... Mar 5 2016, 09:18 AM Tbrown4x4 I've seen videos of a Fiat X 1/9 hillclimber w... Mar 5 2016, 09:26 AM Mark Henry
What am I missing?
Torque. Mar 5 2016, 09:36 AM bandjoey Do a search and you'll find a few threads. All... Mar 5 2016, 09:44 AM Andyrew Well my setup is being built to rev to 8250 reliab... Mar 5 2016, 09:49 AM
tomrev Torque yes, but don't forget bikes don't h... Mar 5 2016, 11:13 AM Hank914 "There are dozens of possible alternatives cu... Mar 5 2016, 11:32 AM tomrev [quote name='Hank914' date='Mar 5 2016... Mar 5 2016, 11:35 AM Mark Henry If you look at the typical T4 or /6 build, the tor... Mar 5 2016, 11:58 AM messix lots of info here dispels some of the myths
http... Mar 5 2016, 12:47 PM Cracker No it wouldn't be a good fit. No, we haven... Mar 5 2016, 03:57 PM gunn1
No it wouldn't be a good fit. No, we haven... Mar 5 2016, 06:14 PM gunn1 What about something Boxer or in "V" con... Mar 5 2016, 06:16 PM whitetwinturbo ....TORQUE THIS :woohoo:
https://www.youtube.co... Mar 5 2016, 07:37 PM Cracker :poke: :poke: :poke: :shades2:
"Uncle... Mar 5 2016, 08:08 PM gunn1
:poke: :poke: :poke: :shades2:
"Uncl... Mar 5 2016, 08:14 PM Cracker I'll take that as you have no experience...her... Mar 5 2016, 08:26 PM messix myth busted
https://www.youtube.com/watch?v=JGvL... Mar 5 2016, 10:52 PM Mueller
myth busted
[url=https://www.youtube.com/watch?... Mar 5 2016, 11:19 PM thelogo Its all about usable power
But the engine i wo... Mar 5 2016, 11:14 PM Mueller
Its all about usable power
But the engine i w... Mar 5 2016, 11:22 PM Cracker The problem is with allot of bike motors, the tran... Mar 6 2016, 06:51 AM DBCooper Ever seen the connecting rod of a Cummins big truc... Mar 6 2016, 09:37 AM whitetwinturbo Joy you say you want...........here's a flying... Mar 6 2016, 11:06 AM ClayPerrine Back when I was fixing cars for a living, I had on... Mar 6 2016, 12:10 PM KELTY360
Back when I was fixing cars for a living, I had o... Mar 6 2016, 12:28 PM ThePaintedMan :agree: Even in the SCCA DSR/P2 class, where the c... Mar 6 2016, 12:22 PM Cracker The best engine I could see being used in a 914, s... Mar 6 2016, 01:52 PM tomrev http://www.tomsgarage.com/files/lo12_035.JPG
... Mar 6 2016, 02:00 PM Craigers17 I realize this is an older post and I'm not tr... Mar 16 2019, 11:21 AM thelogo The mod your looking for is a rotary or wankel eng... Mar 16 2019, 12:00 PM Rand The tranny made for a bike can't handle the we... Mar 16 2019, 01:28 PM sixnotfour https://orangecounty.craigslist.org/cto/d/w...6841... Mar 16 2019, 02:10 PM SirAndy 1976 Porsche 914 with a 2006 Suzuki Hayabusa 1300 ... Mar 16 2019, 02:17 PM roblav1 It seems I'm on the opposite page than almost ... Mar 16 2019, 05:44 PM SirAndy You can easily change either (or both) sprockets t... Mar 16 2019, 06:01 PM Cracker I have a bike powered car and it would be terrible... Mar 16 2019, 07:34 PM sixnotfour
:beer2: :bump: Mar 16 2019, 07:43 PM roblav1 You could drive around town at 5-6000 RPM but woul... Mar 16 2019, 08:54 PM sixnotfour Well, it does run...914
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