Register Login
Save up to 15% with Adrian Flux insurance!
Reply
 
Thread Tools
Old 26-12-2016   #1
Join Date: Jun 2015
Location: Mahone Bay, NS - Canada
Posts: 9
Thanks: 0
Trader Rating: 0
Canada 
Easiest parts to gain 2-3hp?

Hi all!

Thinking about options for my 126 when I go about importing one here to Canada. I'll probably be going for one of the later model 126ps (ELX) as a good friend has 1999 ELX in Poland.

That being said, things are pretty wide open and far apart here in Canada compared to what a lot of you are used to in the UK/Europe. I want to keep my 126 mostly stock, but I also want it to be the first car I start working on mechanically in earnest - something to tinker with!

If I were to keep my 126 mostly stock but just wish to add a few more horsepower, what's the easiest way to go? Exhaust for one, I'd think? The speed limit on most roads here is 80kph where I live, so a few extra hp to keep me at speed going up hills with the huge Chevy, RAM and Ford trucks behind me!
__________________
- darkstrike
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
www.facebook.com/FIATALY
darkstrike is offline Reply With Quote Quote 
Old 27-12-2016   #2
Moderator
 
gadge's Avatar
Join Date: Sep 2004
Location: In a galaxy far far away
Posts: 3,874
Thanks: 114
Trader Rating: 0
gadge is part of the official FF Events Team :)
gadge has donated!
United Kingdom 
Re: Easiest parts to gain 2-3hp?

There aren't many bolt on mods that can extract power from the 650cc twin I'm afraid. An exhaust and a different carb many unleash 2hp maybe 3. Most of the big HP gains (by big I meant over 30 ) are made with lighter flywheels, bigger barrels and a different head. If you spend the money 50hp is possible which doesn't sound much but that's double what it left the factory with and plus it only weighs around 650kgs so it's power to weight is pretty good
__________________


TURBO SYMPHONY
gadge is offline Reply With Quote Quote 
Old 27-12-2016   #3
Join Date: Jun 2015
Location: Mahone Bay, NS - Canada
Posts: 9
Thanks: 0
Trader Rating: 0
Canada 
Re: Easiest parts to gain 2-3hp?

Hi Gadge!

Thanks for the info! I wasn't looking for any huge gains, just a few extra hp without compromising reliability - even a gain of one or two would probably be noticeable with the small amount of hp already on tap and the car's already light weight (keeping in mine I have never driven a 126 in my life, let alone even seen one in person!). I had just been thinking things like an exhaust swap or cooling fan swap...?

Speaking of the cooling fan..I know the engine has to spin that, so there is parasitic loss there. Are those aftermarket aluminium fans decent replacements? Lighter, so they are sucking up less horsepower through parasitic loss then, but are they as effective at cooling?

Not sure I would want to change the carb...if I stick with the original one, I'd imagine I'd have more information available for tuning it when the time comes.

As for flywheel swaps, more hp, but higher revs to accomplish anything, right? Harder on the engine?
__________________
- darkstrike
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
www.facebook.com/FIATALY
darkstrike is offline Reply With Quote Quote 
Old 30-12-2016   #4
Moderator
 
gadge's Avatar
Join Date: Sep 2004
Location: In a galaxy far far away
Posts: 3,874
Thanks: 114
Trader Rating: 0
gadge is part of the official FF Events Team :)
gadge has donated!
United Kingdom 
Re: Easiest parts to gain 2-3hp?

Any moving component that's replaced with a lighter item will help horsepower from being absorbed away so a lighter fan and flywheel could "unleash" 1-2 HP even fitting and electric fuel pump my help as its one less item that the engine has to operate, however the lighter you go the more you rely on revs to keep everything going so you loose out on torque (the 126 has a very good low torque range) and it will idle rough aswell as it struggles to tick over.
__________________


TURBO SYMPHONY
gadge is offline Reply With Quote Quote 
Old 06-01-2017   #5
Join Date: Jun 2015
Location: Mahone Bay, NS - Canada
Posts: 9
Thanks: 0
Trader Rating: 0
Canada 
Re: Easiest parts to gain 2-3hp?

Hi Gadge,

Maybe a different carb would be a good choice down the road. Would just an exhaust upgrade on it's own be a worthwhile investment or would I notice absolutely no difference...?
__________________
- darkstrike
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
www.facebook.com/FIATALY
darkstrike is offline Reply With Quote Quote 
Old 06-01-2017   #6
Moderator
 
gadge's Avatar
Join Date: Sep 2004
Location: In a galaxy far far away
Posts: 3,874
Thanks: 114
Trader Rating: 0
gadge is part of the official FF Events Team :)
gadge has donated!
United Kingdom 
Re: Easiest parts to gain 2-3hp?

a really well chosen exhaust could help gasses escape more efficiently and certainly is well worth doing just for the sound however I've always thought that Sports exhausts tend to work best with other tuning parts so for example a free flowing exhaust would compliment a sports camshaft or a bigger carb. if you can get the air/fuel in and the spent gases out more efficiently then you will gain power. The other way is to lighten components so that the Pistons have less work to do but this involves money.

If it's bolt on mods your after then i'd say a bigger carb and a sports exhaust is then way to go but with all tuning your gonna have to spend the dollars
__________________


TURBO SYMPHONY
gadge is offline Reply With Quote Quote 
Old 09-07-2017   #7
Join Date: Jun 2017
Posts: 14
Thanks: 0
Trader Rating: 0
Australia 
Re: Easiest parts to gain 2-3hp?

Hi the first mod I did to mine was a 1 1/4" fish carb about 32mm it is straight through more like a throttle body. It made a big difference especially going up hills. No longer 2nd gear on 70kph roads, just put your foot down and at worst 3rd gear but much nicer to drive and using less fuel.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

gt alex is offline Reply With Quote Quote 
Old 09-07-2017   #8
Join Date: Jun 2015
Location: Mahone Bay, NS - Canada
Posts: 9
Thanks: 0
Trader Rating: 0
Canada 
Re: Easiest parts to gain 2-3hp?

Hmmm...sounds like an interesting choice! I assume you couldn't use the stock air cleaner setup for it though? Also assuming metalwork was involved?
__________________
- darkstrike
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
www.facebook.com/FIATALY
darkstrike is offline Reply With Quote Quote 
Old 09-07-2017   #9
Join Date: Jan 2016
Posts: 39
Thanks: 2
Trader Rating: 0
Netherlands 
Re: Easiest parts to gain 2-3hp?

A very mild cam with extra lift might also give you the extra torque.
I once found one (for my 500 at the time) in a parts-engine, tried it, and found it very profitable in terms of driveability.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

Rcl is offline Reply With Quote Quote 
Old 09-07-2017   #10
Join Date: Jun 2017
Posts: 14
Thanks: 0
Trader Rating: 0
Australia 
Re: Easiest parts to gain 2-3hp?

Yes I am using the stock air box but with a sports filter inside. I fabricated a plenum for on the carb but I first drove it with a racing air sock on the carb which made it louder than the standard exhaust. the air box made it quieter but back to back testing show a power drop but thats how I drive it, still heaps better than standard.
As for cam I think the 126 cam is already a bit better than the 500.
I will be testing exhaust systems over the next couple of month hopefully with dyno test results.
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

gt alex is offline Reply With Quote Quote 
Old 09-07-2017   #11
Join Date: Jun 2015
Location: Mahone Bay, NS - Canada
Posts: 9
Thanks: 0
Trader Rating: 0
Canada 
Re: Easiest parts to gain 2-3hp?

Quote Originally Posted by Rcl View Post
A very mild cam with extra lift might also give you the extra torque.
I once found one (for my 500 at the time) in a parts-engine, tried it, and found it very profitable in terms of driveability.
Hmmm...sounds like a cam would be a nice compromise. I want to try and keep my car as stock as I can when I get it other than maybe a tiny performance bump and some new wheels. The cam would help without looking noticeably unoriginal! I have a Service Manual for the car, but I imagine the cam would be a lot of work to replace...?

Quote Originally Posted by gt alex View Post
Yes I am using the stock air box but with a sports filter inside. I fabricated a plenum for on the carb but I first drove it with a racing air sock on the carb which made it louder than the standard exhaust. the air box made it quieter but back to back testing show a power drop but thats how I drive it, still heaps better than standard.
As for cam I think the 126 cam is already a bit better than the 500.
I will be testing exhaust systems over the next couple of month hopefully with dyno test results.
Ah, sadly any fabrication work around here is very costly and I don't have the tools or knowhow to do it myself....will be interesting to see your results though!
__________________
- darkstrike
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
www.facebook.com/FIATALY
darkstrike is offline Reply With Quote Quote 
Old 11-07-2017   #12
Join Date: Jun 2017
Posts: 14
Thanks: 0
Trader Rating: 0
Australia 
Re: Easiest parts to gain 2-3hp?

You have got me thinking and that could be dangerous, instead of a cam change, are there higher ratio rockers that could fit the 652 engine? to open the valves a bit faster with more lift.
In my past I got good results with a vw engine and high ratio rockers. easier to fit than a cam and standard looks.

Also some pictures of mine.
No roof doors or glass is sure to make the Lorenz model a bit quicker than the average 126. Also a pic of the fish carb and standard Exhaust with the outlet shortened. and a muffler I have started to modify that I will try if the Michael Speeder exhaust fails to perform.
Attached Thumbnails
Click image for larger version

Name:	11717 016.jpg
Views:	9
Size:	996.8 KB
ID:	182234   Click image for larger version

Name:	11717 017.jpg
Views:	7
Size:	1.30 MB
ID:	182235  

Click image for larger version

Name:	11717 026.jpg
Views:	3
Size:	1.08 MB
ID:	182236   Click image for larger version

Name:	11717 025.jpg
Views:	4
Size:	1.36 MB
ID:	182237  

Click image for larger version

Name:	11717 022.jpg
Views:	4
Size:	1.19 MB
ID:	182238  
__________________
FIAT Forum Useful Links:
Donate to FF | Buy FF Merchandise | Classifieds | FF Insurance | How-to Guides

gt alex is offline Reply With Quote Quote 
Reply
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump
Similar Threads
Thread Thread Starter Forum Replies Last Post
(G) Which seats are easiest to keep clean? lds07 500 20 15-09-2009 15:39
(G) 100hp Rolling Road results....109.3hp Red 100hp Panda 17 09-10-2008 21:48
Whats the easiest way to.. M111CYY Leisure Lounge 15 23-08-2007 19:07