Pulley reduction 15-17-19 ? - MINI Cooper Forum

First Generation MINI Tuning
Find Sponsor products associated with this forum
Tuning the first generation MINI 2001 - 2006

User Tag List

 
LinkBack Thread Tools Rate Thread
post #1 of 12 (permalink) Old Jul 14th, 2014, 05:37 AM Thread Starter
MINI2 Newbie
 
Join Date: Jun 2014
Location: California
Local Time: 08:20 PM
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United States Male
 
Pulley reduction 15-17-19 ?

I am wanting to do a pulley reduction but I dont want to spend the money getting a new intercooler as they are very expensive.

Will be my daily driver.

Im thinking ill just go for a 15% or should i just jump and get a 17. im assuming the 19% will produce to much heat or am i thinking about this all wrong.
Swarley is offline  
Sponsored Links
Advertisement
 
post #2 of 12 (permalink) Old Jul 14th, 2014, 02:35 PM
MINI2 Regular
 
heathwebbo's Avatar
 
Join Date: Feb 2014
Location: Burton on Trent
Local Time: 08:20 PM
Posts: 244
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
If you're not going to get a new intercooler I would go for the 15% some people use a 17% with no problems but you could get heat soak I would also use a high octane fuel such as shell nitro +
heathwebbo is online now  
post #3 of 12 (permalink) Old Jul 14th, 2014, 05:45 PM
MINI2 Regular
 
Join Date: Feb 2014
Local Time: 09:20 PM
Posts: 279
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)

United Kingdom
 
I have a 17 and standard cooler with no issues.

Ive toyed with fitting a new cooler, but cant see the benefit for the money TBH, any aftermarket one will be roughly the same size and not much more efficient.
k3fus is offline  
post #4 of 12 (permalink) Old Jul 14th, 2014, 09:36 PM
MINI2 Master
 
Join Date: Feb 2011
Location: South london
Local Time: 08:20 PM
Posts: 1,224
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
Hi ya

15% with no ic or you will trash your engine as the IAT's and OAT'S go up you will end up with detonation.
When you do your pulley you also need to go up a heat range on your spark plugs.
marque is offline  
post #5 of 12 (permalink) Old Jul 15th, 2014, 07:47 AM
MINI2 Regular
 
heathwebbo's Avatar
 
Join Date: Feb 2014
Location: Burton on Trent
Local Time: 08:20 PM
Posts: 244
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
Quote:
Originally Posted by k3fus View Post
I have a 17 and standard cooler with no issues.

Ive toyed with fitting a new cooler, but cant see the benefit for the money TBH, any aftermarket one will be roughly the same size and not much more efficient.
You wont be getting the full benefit of your 17% pulley with a standard intercooler as your intake temperatures will be high, the aftermarket intercoolers are quite a bit bigger & much more efficient
heathwebbo is online now  
post #6 of 12 (permalink) Old Jul 17th, 2014, 12:16 AM Thread Starter
MINI2 Newbie
 
Join Date: Jun 2014
Location: California
Local Time: 08:20 PM
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United States Male
 
ok awesome thanks guys. It sounds like i for sure should go for a 15%. As i really dont want to upgrade the ic.

I have read some people have been putting bigger hood scoops to capture more air but would that really make a huge difference or no ? it does look nice cosmetic wise but that might be the only advantage.

also @heathwebbo I currently use nothing less than 91 sometimes 92 just depends on the fuel station.

Thanks everyone for your responses!
Swarley is offline  
post #7 of 12 (permalink) Old Jul 17th, 2014, 07:06 AM
MINI2 Regular
 
Join Date: Feb 2014
Local Time: 09:20 PM
Posts: 279
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)

United Kingdom
 
What boost pressure should you see with which size pulley?
k3fus is offline  
post #8 of 12 (permalink) Old Jul 17th, 2014, 07:14 AM Thread Starter
MINI2 Newbie
 
Join Date: Jun 2014
Location: California
Local Time: 08:20 PM
Posts: 20
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United States Male
 
from what i have been told with a 17% you should get around 19psi vs stock at 9.5-11.5
Swarley is offline  
post #9 of 12 (permalink) Old Jul 17th, 2014, 08:59 AM
MINI2 Regular
 
Join Date: Feb 2014
Local Time: 09:20 PM
Posts: 279
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)

United Kingdom
 
Quote:
Originally Posted by Swarley View Post
from what i have been told with a 17% you should get around 19psi vs stock at 9.5-11.5
According to my scangauge i get 14psi with my 17% pulley. Not sure how accurate a scanguage is.
k3fus is offline  
post #10 of 12 (permalink) Old Jul 17th, 2014, 04:25 PM
MINI2 Regular
 
heathwebbo's Avatar
 
Join Date: Feb 2014
Location: Burton on Trent
Local Time: 08:20 PM
Posts: 244
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
With my old supercharger I was getting 14 to 15psi with my new teflon supercharger I am getting 18 to 19psi
heathwebbo is online now  
post #11 of 12 (permalink) Old Jul 17th, 2014, 05:37 PM
MINI2 Regular
 
Join Date: Feb 2014
Local Time: 09:20 PM
Posts: 279
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 16 Post(s)

United Kingdom
 
Quote:
Originally Posted by heathwebbo View Post
With my old supercharger I was getting 14 to 15psi with my new teflon supercharger I am getting 18 to 19psi

Mine is an 06 so should have the same charger as the JCW. Its having it's Miltek fitted tomorrow and a dyno run.
k3fus is offline  
post #12 of 12 (permalink) Old Jul 17th, 2014, 10:09 PM
MINI2 Master
 
Join Date: Feb 2011
Location: South london
Local Time: 08:20 PM
Posts: 1,224
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)

United Kingdom Male
 
Quote:
Originally Posted by Swarley View Post
ok awesome thanks guys. It sounds like i for sure should go for a 15%. As i really dont want to upgrade the ic.

I have read some people have been putting bigger hood scoops to capture more air but would that really make a huge difference or no ? it does look nice cosmetic wise but that might be the only advantage.

also @heathwebbo I currently use nothing less than 91 sometimes 92 just depends on the fuel station.

Thanks everyone for your responses!
Hi ya

If your going to run a pulley or any mods heat management is important, so any extra cooling air you can get in to the engine bay is good.
Also Any extra cold Air you can push though the ic through the scoop is good to.
With the pulley and plugs I would run the highest octane fuel available at the petrol station or you will melt your engine from it running lean. Or be very close to it you only need a slight hick up and your into melt down.

I know you don't want to change the ic but personal I would advise it. If it's the cost there are some good secondhand ones around.

You could if you wanted run a water meth injection system this will help you keep the air temps down. You could run a water meth system but only run water no meth

If you want to be safe buy an 11% pulley a good airbox and plugs it will most probably work as well if not better in high temps than a 15%
marque is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the MINI Cooper Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Rate This Thread
Rate This Thread:



Similar Threads
Thread Thread Starter Forum Replies Last Post
06 R53 with JCW210 - Opinions Wanted on Should I Add 2% OD Crank Pulley? jj-snax First Generation MINI Tuning 14 Feb 10th, 2014 11:08 AM
15% pulley on a 2005 MCS automatic is it worth it aus mini General Discussion 6 Aug 27th, 2013 03:53 PM
Need someone to fit my reduction pulley and BPV? edwardtobia First Generation MINI Tuning 2 Jul 30th, 2013 09:10 AM
idler pulley question Miniblu First Generation MINI Cooper S 1 May 25th, 2013 06:00 PM

Posting Rules  
You may post new threads
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome