Go Back  Miata Turbo Forum - Boost cars, acquire cats. > Performance & Tuning > Supercharger Discussion
Reload this Page >

How far would you take a c15-60 on stock internals?

Supercharger Discussion For all you misguided souls.
Sponsored by:
Sponsored by:

How far would you take a c15-60 on stock internals?

 
Old 05-11-2013, 07:27 PM
  #1  
Junior Member
Thread Starter
 
Join Date: Sep 2010
Location: Denmark
Posts: 79
Total Cats: 1
Default How far would you take a c15-60 on stock internals?

Hi all,

As the title says: How far would you feel safe to push a c15-60 Rotrex with an I/C, EV14s and a Megasquirt in a '99 1.8? Tq, hp, restrictor, pulley?

The car is a DD that sees occasional trackdays.

Thanks,
- Tom
one-niner is offline  
Old 05-11-2013, 07:40 PM
  #2  
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 76,123
Total Cats: 2,273
Default

probably 300rwhp since they make no torque.
Braineack is offline  
Old 05-12-2013, 02:10 PM
  #3  
Senior Member
iTrader: (2)
 
Join Date: Oct 2011
Location: SE NM
Posts: 1,495
Total Cats: 48
Default

A C15-60 needs no restrictor on a stock internals 1.8. Running all out you might get 220 whp. That would put your torque at 180ish. Still 50 ft lbs below what is considered safe to run on stock internals.
Chilicharger665 is offline  
Old 05-12-2013, 02:11 PM
  #4  
Junior Member
Thread Starter
 
Join Date: Sep 2010
Location: Denmark
Posts: 79
Total Cats: 1
Default

Thanks. Exactly what I had hoped

- Tom
one-niner is offline  
Old 05-12-2013, 02:31 PM
  #5  
NB/VVT Connoisseur
iTrader: (24)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,138
Total Cats: 255
Default

lol @ no torque crew
viperormiata is offline  
Old 05-12-2013, 02:39 PM
  #6  
Junior Member
Thread Starter
 
Join Date: Sep 2010
Location: Denmark
Posts: 79
Total Cats: 1
Default

Originally Posted by viperormiata View Post
lol @ no torque crew
Yeah, it's hilarious. It's also the only legal approach to get more than 20 % extra power in an MX-5 where I live.

- Tom
one-niner is offline  
Old 05-12-2013, 02:44 PM
  #7  
NB/VVT Connoisseur
iTrader: (24)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,138
Total Cats: 255
Default

Where do you live? Finish filling out your information.
viperormiata is offline  
Old 05-12-2013, 03:04 PM
  #8  
Junior Member
Thread Starter
 
Join Date: Sep 2010
Location: Denmark
Posts: 79
Total Cats: 1
Default

Originally Posted by viperormiata View Post
Where do you live? Finish filling out your information.
Denmark. We also pay some of the highest income taxes in the world and a 180 % registration tax on cars. Fuel is around 8.5 $/gal. So please forgive me for being a little touchy on the subject. The weather is also crap.

- Tom
one-niner is offline  
Old 05-12-2013, 03:53 PM
  #9  
Senior Member
iTrader: (2)
 
Join Date: Oct 2011
Location: SE NM
Posts: 1,495
Total Cats: 48
Default

The C15-60 has a max speed of 150,000 rpm. If you are using the stock 130mm crank pulley then you can run a very small pulley to max the boost on it. Go to miata.net and search "C15-60" to see a couple of builds that got 200 whp with bone stock BP-4W engines like you have. I've PMed CoralDoc there and he gave me a bunch of info. I'm not sure what rpm he is taking his 15-60 to but he is getting 9.6 psi and 207 whp.

I don't know if its an option for you, but the new Kraftwerks kit (add Megasquit and better injectors) (minus the standard injectors and band aid BS) and a substituted C15-60 for the regular C30-74 ought to be a great solution. The intercooler set up is nice and lightweight and should be absolutely fine at 200 whp.
Chilicharger665 is offline  
Old 05-12-2013, 03:58 PM
  #10  
Elite Member
iTrader: (1)
 
turbofan's Avatar
 
Join Date: Sep 2010
Location: Laguna Hills, CA
Posts: 7,107
Total Cats: 587
Default

Originally Posted by one-niner View Post
Denmark. We also pay some of the highest income taxes in the world and a 180 % registration tax on cars. Fuel is around 8.5 $/gal. So please forgive me for being a little touchy on the subject. The weather is also crap.

- Tom
..... 180%? so, if I am to understand correctly... I buy a $10,000 car, and I owe the gov't $18,000?
turbofan is online now  
Old 05-12-2013, 05:34 PM
  #11  
Junior Member
Thread Starter
 
Join Date: Sep 2010
Location: Denmark
Posts: 79
Total Cats: 1
Default

Originally Posted by turbofan View Post
..... 180%? so, if I am to understand correctly... I buy a $10,000 car, and I owe the gov't $18,000?
Yes. But only the first time it is registered in the country. If you pick up a brand new car from a dealership, it costs 2.8 times what it would in most other countries. If you import a used car from a different country, the registration tax is calculated based on similar used cars already registered/taxed in Denmark.

There are no loopholes and attempts to cheat the system by not registering, or driving a foreign registered car (as a Danish resident), are heavily fined and you are forced to pay the registration tax.

If you export a registered car, you can claim a tax refund based on the price of similar cars, so used cars keep a relative portion of their bloated value. For reference, I bought my 10AE in '09 for $20.5k.

It sucks. However, we get free education, including university, free healthcare, pretty good roads etc. etc. There is a reason why Danes repeatedly end up as no.1 in those "the happiest people in the world" surveys.

- Tom
one-niner is offline  
Old 05-12-2013, 05:57 PM
  #12  
Elite Member
iTrader: (1)
 
turbofan's Avatar
 
Join Date: Sep 2010
Location: Laguna Hills, CA
Posts: 7,107
Total Cats: 587
Default

Originally Posted by one-niner View Post
Yes. But only the first time it is registered in the country. If you pick up a brand new car from a dealership, it costs 2.8 times what it would in most other countries. If you import a used car from a different country, the registration tax is calculated based on similar used cars already registered/taxed in Denmark.

There are no loopholes and attempts to cheat the system by not registering, or driving a foreign registered car (as a Danish resident), are heavily fined and you are forced to pay the registration tax.

If you export a registered car, you can claim a tax refund based on the price of similar cars, so used cars keep a relative portion of their bloated value. For reference, I bought my 10AE in '09 for $20.5k.

It sucks. However, we get free education, including university, free healthcare, pretty good roads etc. etc. There is a reason why Danes repeatedly end up as no.1 in those "the happiest people in the world" surveys.

- Tom
Damn.

I got nearly free university too by maintaining good grades and applying for good grants. Free healthcare, not so much. Having to pay that much for cars would make me bring down the average happiness on the happiness surveys. I understand your touchiness.

/threadjack
turbofan is online now  
Old 05-12-2013, 09:27 PM
  #13  
Elite Member
iTrader: (2)
 
Mobius's Avatar
 
Join Date: May 2008
Location: Portland, Oregon
Posts: 3,406
Total Cats: 328
Default

My family pays for health care each year, high deductible plan, what I paid for my 01 miata when I got it in 07.
Mobius is offline  
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
67
03-16-2019 08:07 PM
LucaCarMods
Build Threads
11
02-14-2016 06:13 AM
Rick02R
WTB
3
01-03-2016 07:18 PM
tazswing
Race Prep
20
10-03-2015 11:04 AM
Trent
WTB
2
10-01-2015 12:15 PM


Thread Tools
Search this Thread
Quick Reply: How far would you take a c15-60 on stock internals?


Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.