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Turbo YZF-R125

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twotakt
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PostPosted: 22:54 - 06 Jan 2010    Post subject: Turbo YZF-R125 Reply with quote

I know nothing about turbo's, but ones I have seen have always been on multi cylinder engines. So, could a turbo work on a single like the r125?

Check the pics to see this r125 turbo project:

https://www.bikepics.com/members/projectr125/10yzfr125/
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Damon
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PostPosted: 23:10 - 06 Jan 2010    Post subject: Reply with quote

Yeah, in theory they can work on any engine. All they do is force more air into the engine. More air + more fuel = more power.

Some do work alot better than others however...
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Acemastr
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PostPosted: 23:16 - 06 Jan 2010    Post subject: Reply with quote

if my math is correct it'll still make less power than an RS125/Mito
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G
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PostPosted: 23:20 - 06 Jan 2010    Post subject: Re: Turbo YZF-R125 Reply with quote

A turbo version for big 4 stroke dirt bikes like Husabergs is popular for snow use.
I'd worry that the 125 wouldn't flow enough exhaust gases to be useful, but then it's hardly going to be a project that's going to be 'useful' anyway Smile.
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twotakt
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PostPosted: 23:51 - 06 Jan 2010    Post subject: Re: Turbo YZF-R125 Reply with quote

G wrote:
A turbo version for big 4 stroke dirt bikes like Husabergs is popular for snow use.


Did they make a factory turbo berg? I can only seem to find ones that people have made themselves in their "sheds". They look pretty fucking awesome tbh:

Turbo Berg thread
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G
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PostPosted: 23:56 - 06 Jan 2010    Post subject: Re: Turbo YZF-R125 Reply with quote

Sorry, I didn't mean a factory 'version' - you can get an aftermarket turbo kit for them. People also bore them out to 750cc and more for dessert racing - lots of grunt when the 650 is one of the meatiest singles as it is.
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twotakt
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PostPosted: 00:25 - 07 Jan 2010    Post subject: Reply with quote

750 sounds mint as well, I love the look of Bergs but there "Husaboom" reputation has always put me off.
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G
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PostPosted: 00:31 - 07 Jan 2010    Post subject: Reply with quote

Later ones aren't too bad - but then you're talking a very highly tuned light weight competition bike. Bikes like the CRF450 aren't too great either, despite being 'a Honda'.
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Pete.
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PostPosted: 00:59 - 07 Jan 2010    Post subject: Re: Turbo YZF-R125 Reply with quote

jackdim wrote:
I know nothing about turbo's, but ones I have seen have always been on multi cylinder engines. So, could a turbo work on a single like the r125?

Check the pics to see this r125 turbo project:

https://www.bikepics.com/members/projectr125/10yzfr125/


I already had one under construction about a year ago but had to shelve the idea when the bike's owner had second thoughts. Ona R125 it'd be a simple matter to turbo it and the fuelling would be doddle too. In those pictures the guy has all the hard work done.
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The Original Muzza
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PostPosted: 01:21 - 07 Jan 2010    Post subject: Re: Turbo YZF-R125 Reply with quote

G wrote:
dessert racing


Do they compete to win the "Pudding Cup"?
Fnar Fnar. Laughing
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temeluchus
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PostPosted: 10:30 - 07 Jan 2010    Post subject: Re: Turbo YZF-R125 Reply with quote

G wrote:

I'd worry that the 125 wouldn't flow enough exhaust gases to be useful, but then it's hardly going to be a project that's going to be 'useful' anyway Smile.


You can get quite small turbos-20 tractable ponies isnt an unrealistic target.

I think mitsubishi do a dinky turbo. I'm sure I saw someone running a turbo honda Dax a while back.
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Dr. DaveJPS
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PostPosted: 11:15 - 07 Jan 2010    Post subject: Re: Turbo YZF-R125 Reply with quote

Temeluchus wrote:

I think mitsubishi do a dinky turbo. I'm sure I saw someone running a turbo honda Dax a while back.


it never worked though
https://www.btinternet.com/~goosegog/turbodax.htm
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T0MMY
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PostPosted: 11:25 - 07 Jan 2010    Post subject: Reply with quote

Does seem fairly pointless other than as a project for the hell of it, given it'll still be slower than countless other cheaper bikes and doesn't really fill any particular niche.

I'm thinking of turbocharging an MX5 this year though which should be fun...if a little gay.
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Pete.
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PostPosted: 15:50 - 07 Jan 2010    Post subject: Reply with quote

The R125 engine won't take the punishment of a turbo for long anyway. I've got photos of a standard one that's destroyed itself from the inside.
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delvey91
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PostPosted: 16:06 - 07 Jan 2010    Post subject: Reply with quote

Geri wrote:
I've got photos of a standard one that's destroyed itself from the inside.


Lets see them Thumbs Up
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Mystery
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PostPosted: 00:10 - 08 Jan 2010    Post subject: Reply with quote

yeah you can add one if you have the cash, there was a guy who added a super charger and nos system to a 125 and bored it out 200cc and that was putting out 90bhp at the back wheel but cost him about 40k or something silly
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ms51ves3
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PostPosted: 00:31 - 08 Jan 2010    Post subject: Reply with quote

blindweezy wrote:
...a 125 and bored it out 200cc...


It's not a 125 then.

And the bike was a Cagiva Mito.
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Mystery
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PostPosted: 02:06 - 08 Jan 2010    Post subject: Reply with quote

ms51ves3 wrote:
blindweezy wrote:
...a 125 and bored it out 200cc...


It's not a 125 then.

And the bike was a Cagiva Mito.


i know what bike it was but thanks anyway and theres very little between turboing a 125 and super charging a 200 though Confused
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hmmmnz
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PostPosted: 03:44 - 08 Jan 2010    Post subject: Reply with quote

Acemastr wrote:
if my math is correct it'll still make less power than an RS125/Mito


and what math is that??? i'd like to see your working

or was that just a figure of speech? and not really worth anything

ive seen 50cc 4 strokes putting out almost 20hp with a turbo,
granted they quite often didnt last the legnth of a race, and you'd be lucky to get a couple with out a full rebuild, but still.
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Pete.
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PostPosted: 08:55 - 08 Jan 2010    Post subject: Reply with quote

delvey91 wrote:
Geri wrote:
I've got photos of a standard one that's destroyed itself from the inside.


Lets see them Thumbs Up


Not 'till after we've heard back from Yamaha!
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smegballs
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PostPosted: 18:24 - 08 Jan 2010    Post subject: Reply with quote

I probably may be wrong but isnt the modern trend to turbo for efficiency rather than turboing for power?

This is just something I have gleaned from modern car trends and I think it mainly applies to diseasels. Anyone car to expand of this?
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Kickstart
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PostPosted: 18:57 - 08 Jan 2010    Post subject: Reply with quote

Hi

It is a more efficient way of getting more power.

Diesels have the "advantage" that they do not have a throttle, hence not going to stall the turbo when you back off to change gear.

Looks like Alfa are pulling a bit of a sneaky trick. The new Mito has what they call their DNA system, with a switch to change the chars character. Changes a few things such as the weight of the steering and the power delivery. Bet that it is tested for CO2 emissions and all that rubbish in the default basic economy setting, while the sporty setting swaps to a decent map for fueling and boost.

All the best

Keith
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BenR
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PostPosted: 23:42 - 08 Jan 2010    Post subject: Reply with quote

Kickstart wrote:
Hi
Looks like Alfa are pulling a bit of a sneaky trick. The new Mito has what they call their DNA system, with a switch to change the chars character. Changes a few things such as the weight of the steering and the power delivery. Bet that it is tested for CO2 emissions and all that rubbish in the default basic economy setting, while the sporty setting swaps to a decent map for fueling and boost.

All the best

Keith



That's straight out of the grande punto & 500 so actually a fiat idea (not that I want to split hairs or anything). Embarassed Laughing
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Kickstart
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PostPosted: 23:54 - 08 Jan 2010    Post subject: Reply with quote

Hi

Same company these days, and same group of engineers do the engines now.

Last real true Alfa engine was the old V6 that was retired a couple of years ago.

All the best

Keith
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