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

Beginning to gather parts for build, need experienced input!

Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Beginning to gather parts for build, need experienced input!

 
Old 07-04-2016, 05:47 PM
  #41  
Junior Member
Thread Starter
 
Join Date: Nov 2015
Posts: 67
Total Cats: -6
Default

I know slightly more than nothing. It's in the realm of 220. That's what virtual dyno is giving me. I'm pushing 15psi right now, granted I can't keep my boost curve flat with closed loop on the ebc for some reason. I suppose the biggest thing I want out of this build is to have a linear powerband. I hate getting pulled because my tiny turbo can't flow enough. The stock motor wouldn't like much more air thrown at it.
Rshannon81 is offline  
Old 07-04-2016, 05:55 PM
  #42  
Hug Life
iTrader: (3)
 
Monk's Avatar
 
Join Date: Apr 2014
Location: Huntington, Indiana
Posts: 2,986
Total Cats: 609
Default

So, are you building this to mainly drag race? You may be disappointed no matter how much power you have.
Miatas simply aren't good drag cars.
Monk is offline  
Old 07-04-2016, 06:11 PM
  #43  
Junior Member
Thread Starter
 
Join Date: Nov 2015
Posts: 67
Total Cats: -6
Default

I have a road course somewhat close to me that I plan on running. And for the occasional street pull.
Rshannon81 is offline  
Old 07-04-2016, 06:18 PM
  #44  
Hug Life
iTrader: (3)
 
Monk's Avatar
 
Join Date: Apr 2014
Location: Huntington, Indiana
Posts: 2,986
Total Cats: 609
Default

Gotcha.
A well executed high power turbo build costs good money. So does a well executed v8 swap.
A lower powered turbo build is more realistic, is more drivable, and you have some parts already.
V8s sound cool.
Ask your spirit animal which path you should take.
Monk is offline  
Old 07-04-2016, 06:22 PM
  #45  
Junior Member
Thread Starter
 
Join Date: Nov 2015
Posts: 67
Total Cats: -6
Default

My spirit animal has been racking my brain about this for a few weeks now. I'm leaning towards going for a 1.8 vvt and an nb 6 spd, and aim for 300whp at first. My next dilemma is whether or not to build the valvetrain. Is it worth the extra ~1k to do it?
Rshannon81 is offline  
Old 07-04-2016, 06:25 PM
  #46  
Hug Life
iTrader: (3)
 
Monk's Avatar
 
Join Date: Apr 2014
Location: Huntington, Indiana
Posts: 2,986
Total Cats: 609
Default

Depends on how high you want to rev it.
I bought a head with supertech light doubles already installed for 450.
I would say yes. It's never a bad idea to overbuild.
Monk is offline  
Old 07-04-2016, 06:28 PM
  #47  
Junior Member
Thread Starter
 
Join Date: Nov 2015
Posts: 67
Total Cats: -6
Default

I'm thinking 7500 for most occasions and 8000 for when I need it? Nothing crazy.
Rshannon81 is offline  
Old 07-04-2016, 06:38 PM
  #48  
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 3,053
Total Cats: 358
Default

With close to 300hp I rarely find it necessary to even go to 7k. The drag strip is the only place I have felt the need to take it to 7,200. It just isn't necessary,it makes so much power in the 3.5-5k range.
ryansmoneypit is offline  
Old 07-04-2016, 06:40 PM
  #49  
Junior Member
Thread Starter
 
Join Date: Nov 2015
Posts: 67
Total Cats: -6
Default

I see. Well I suppose I could always decide to build the valvetrain later down the road. What compression ratio would you recommend?
Rshannon81 is offline  
Old 07-04-2016, 06:42 PM
  #50  
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 3,053
Total Cats: 358
Default

Originally Posted by thumpetto007 View Post
GUYS! The op has already changed his mind. He is going with a 1.8L VVT engine.

Just so we are all on the same page.
See post 29 from TODAY. Now he is even talking about v8. You, he and we, are not on the same page.
ryansmoneypit is offline  
Old 07-04-2016, 06:42 PM
  #51  
Hug Life
iTrader: (3)
 
Monk's Avatar
 
Join Date: Apr 2014
Location: Huntington, Indiana
Posts: 2,986
Total Cats: 609
Default

~9.0 if you are on pump gas.
Higher if you have e85 available
Monk is offline  
Old 07-04-2016, 06:45 PM
  #52  
Junior Member
Thread Starter
 
Join Date: Nov 2015
Posts: 67
Total Cats: -6
Default

I do have e85 available. What are your thought on water/meth?
Rshannon81 is offline  
Old 07-04-2016, 07:22 PM
  #53  
mkturbo.com
iTrader: (24)
 
shuiend's Avatar
 
Join Date: May 2006
Location: Charleston SC
Posts: 14,289
Total Cats: 1,291
Default

Originally Posted by Rshannon81 View Post
I do have e85 available. What are your thought on water/meth?

How available is e85? Like every station, or two in your city? How often do you get away e85 being available?

I am a huge fan of 84mm 8.6:1 Supetech pistons. You give up a bit having the less compression, but your safety margin on pump gas is much higher.

Water/meth is not really big here. Mostly because a good front mount intercooler works just as well at those power levels and it does not ever run out. Just make sure you have a very good intercooler core.
shuiend is offline  
Old 07-04-2016, 07:26 PM
  #54  
SADFab Destructive Testing Engineer
iTrader: (5)
 
aidandj's Avatar
 
Join Date: Apr 2014
Location: Beaverton, USA
Posts: 18,471
Total Cats: 1,622
Default

Originally Posted by Rshannon81 View Post
I have a road course somewhat close to me that I plan on running. And for the occasional street pull.
Try $15k+ if you want a reliable 400hp turbo miata on the track.

Also if you are just "thinking" about running on a road course then take your 200hp there and learn to drive. You will be surprised how fast you can be with 200hp on a road course.

aidandj is offline  
Old 07-04-2016, 07:35 PM
  #55  
Elite Member
iTrader: (1)
 
Join Date: Jun 2014
Location: Austin, TX
Posts: 3,022
Total Cats: 317
Default

This thread makes me soft and flaccid.
Girz0r is offline  
Old 07-04-2016, 08:07 PM
  #56  
Junior Member
Thread Starter
 
Join Date: Nov 2015
Posts: 67
Total Cats: -6
Default

There's two pumps within 15 minutes of my house. It's pretty great.
Rshannon81 is offline  
Old 07-04-2016, 08:49 PM
  #57  
Senior Member
iTrader: (1)
 
Join Date: Sep 2008
Location: Tucson, Arizona
Posts: 883
Total Cats: 56
Default

I'm like 15k deep in mine and I wish I would have gone v8.With that said. I still have more work to do. It'll be good when i'm finished but probably another 5k away
krissetsfire is offline  
Old 07-04-2016, 09:48 PM
  #58  
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 3,053
Total Cats: 358
Default

Originally Posted by Girz0r View Post
This thread makes me soft and flaccid.
That's because MT is turning a new leaf. Two years ago, this guy would have been set on fire and left to live out the rest of his life on mx5.
ryansmoneypit is offline  
Old 07-04-2016, 09:50 PM
  #59  
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 3,053
Total Cats: 358
Default

Originally Posted by Rshannon81 View Post
I know slightly more than nothing. It's in the realm of 220. That's what virtual dyno is giving me. I'm pushing 15psi right now, granted I can't keep my boost curve flat with closed loop on the ebc for some reason. I suppose the biggest thing I want out of this build is to have a linear powerband. I hate getting pulled because my tiny turbo can't flow enough. The stock motor wouldn't like much more air thrown at it.
Doesn't mean dick. Virtual dyno said my car makes like 425 or something stupid.
ryansmoneypit is offline  
Old 07-05-2016, 02:45 AM
  #60  
Junior Member
Thread Starter
 
Join Date: Nov 2015
Posts: 67
Total Cats: -6
Default

Originally Posted by ryansmoneypit View Post
Doesn't mean dick. Virtual dyno said my car makes like 425 or something stupid.
Well maybe you should learn how to use the program properly. It gives somewhat accurate numbers with the right values.
Rshannon81 is offline  

Thread Tools
Search this Thread
Quick Reply: Beginning to gather parts for build, need experienced input!


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.