DIY Turbo Discussion greddy on a 1.8? homebrew kit?
Sponsored by:
Sponsored by:

250-300WHP Build

 
Old 03-21-2019, 02:20 PM
  #81  
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,313
Total Cats: 2,019
Default

Right after the forums work properly
__________________

High-Performance Turbo Specialists - Sunnyvale, CA - Email us!

Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
Savington is offline  
Old 03-21-2019, 04:26 PM
  #82  
Senior Member
iTrader: (3)
 
Join Date: Dec 2011
Location: Tucson, Az
Posts: 585
Total Cats: 45
Default

Originally Posted by borka View Post
ebay tacotaco wont work with an EFR, the compressor housing will hit the cars side rail
Pfft, like we don't have a fix for that.
TheScaryOne is offline  
Old 03-24-2019, 09:13 PM
  #83  
Junior Member
Thread Starter
 
Join Date: Jan 2018
Posts: 56
Total Cats: -94
Default

Originally Posted by concealer404 View Post
Savington , thank you for designing your manifold so we can have a decent length hood exit. When will your hood exit exhaust be available?
ok, MY BAD lol

No hood exit. Got it. I'll go with the Kraken setup then, seems to be the best price out of the kits.
achulz is offline  
Reply
Leave a poscat -1 Leave a negcat
Old 03-25-2019, 05:45 PM
  #84  
Newb
 
Join Date: Nov 2018
Posts: 15
Total Cats: -26
Default

Originally Posted by achulz View Post
What's a better option? 9.5:1? I don't want to go all the way down to 8.6:1, then I'm just running more boost for the same power level. That is why I chose 11:1, I know combustion temps can get very high but there's ways to work around that, WMI for instance.

Edit: I'm asking because I can change the order before it ships.



Aren't these the same thing?

https://fab9tuning.com/arp-head-stud-kit/
Here is your 11:1 with turbo build that all the naysayers in this thread are drooling over.
https://www.miataturbo.net/diy-turbo...ase-car-92683/
208fabrication is offline  
Reply
Leave a poscat -9 Leave a negcat
Old 03-25-2019, 05:56 PM
  #85  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,369
Total Cats: 1,649
Default

Originally Posted by 208fabrication View Post
Here is your 11:1 with turbo build that all the naysayers in this thread are drooling over.
https://www.miataturbo.net/diy-turbo...ase-car-92683/
That motor died a horrible death. There's quite a few updates missing between the OP and the current post updated yesterday or today.

We're just haters, though.
concealer404 is online now  
Old 03-25-2019, 06:02 PM
  #86  
Senior Member
 
Join Date: Mar 2014
Location: Jacksonville, FL
Posts: 1,279
Total Cats: 155
Default

Originally Posted by 208fabrication View Post
Here is your 11:1 with turbo build that all the naysayers in this thread are drooling over.
https://www.miataturbo.net/diy-turbo...ase-car-92683/
Is there a point here?

no one said that 11:1 pistons cant ever be used.

OP said he will primarily run the car on 93 gas, with maybe some e85 here and there. in which case 11:1 pistons is not the correct choice.
borka is offline  
Old 03-25-2019, 11:26 PM
  #87  
Newb
 
Join Date: Nov 2018
Posts: 15
Total Cats: -26
Default

Point is that he should go with his original build plan and enjoy how much fun that would be. 11:1 and low boost would be a blast and survive just fine on 93.
208fabrication is offline  
Reply
Leave a poscat -8 Leave a negcat
Old 03-25-2019, 11:29 PM
  #88  
Elite Member
iTrader: (1)
 
turbofan's Avatar
 
Join Date: Sep 2010
Location: Laguna Hills, CA
Posts: 7,220
Total Cats: 628
Default

Point is, you are wrong. 11:1 boosted on 93 is stupid, plain and simple.

There's one arena where that could be acceptable: DI cars.
turbofan is offline  
Old 03-25-2019, 11:41 PM
  #89  
Newb
 
Join Date: Nov 2018
Posts: 15
Total Cats: -26
Default

Explain to me how I am wrong and explain how my 12.5:1 motorcycle runs amazing for 40,xxx miles on 87 octane at 2500+ foot elevation?
208fabrication is offline  
Reply
Leave a poscat -9 Leave a negcat
Old 03-25-2019, 11:44 PM
  #90  
Elite Member
iTrader: (1)
 
turbofan's Avatar
 
Join Date: Sep 2010
Location: Laguna Hills, CA
Posts: 7,220
Total Cats: 628
Default

turbofan is offline  
Old 03-25-2019, 11:47 PM
  #91  
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,313
Total Cats: 2,019
Default

Originally Posted by 208fabrication View Post
Explain to me how I am wrong and explain how my 12.5:1 motorcycle runs amazing for 40,xxx miles on 87 octane at 2500+ foot elevation?
Which motorcycle uses a Mazda B-series architecture 4-cylinder engine?
__________________

High-Performance Turbo Specialists - Sunnyvale, CA - Email us!

Originally Posted by codrus View Post
Basically I've come over to the camp of "If something is a reliability problem on the track, just ask Andrew and do what he says".
Savington is offline  
Old 03-25-2019, 11:56 PM
  #92  
Junior Member
 
Join Date: Apr 2018
Posts: 104
Total Cats: 20
Default

Originally Posted by 208fabrication View Post
Explain to me how I am wrong and explain how my 12.5:1 motorcycle runs amazing for 40,xxx miles on 87 octane at 2500+ foot elevation?
Focus RS: 9.37:1
Evo X: 9:1
Golf R: 9.6:1
STI: 8.2:1

you should start selling your idea man you've obviously figured something major out here.
Spaceman Spiff is offline  
Old 03-26-2019, 06:28 AM
  #93  
Elite Member
iTrader: (6)
 
Join Date: Feb 2013
Location: Staunton, Va
Posts: 3,210
Total Cats: 398
Default

Lol at streetbike comparison. Off the shelf OEM engine making 200 hp per liter.

The exhaust exit location on an outboard boat engine is more technically advanced than a miata engine.
ryansmoneypit is online now  
Old 03-26-2019, 06:43 AM
  #94  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 19,329
Total Cats: 2,434
Default

Originally Posted by 208fabrication View Post
Explain to me how I am wrong and explain how my 12.5:1 motorcycle runs amazing for 40,xxx miles on 87 octane at 2500+ foot elevation?
All engines must have identical design properties in your world. Why doesn't my Miata make power at 14,000 rpm reliably like my motorcycle did? Surely they are both engines! Maybe I am just a fool for not trying to rev my Miata so high. I haven't tried it and it just might work.

I'm going to recommend you do some reading on internal combustion engine design and theory of operation before making recommendations to the other noobs. Study things like rod ratio, undersquare versus oversquare engine designs, quench, tumble and swirl, combustion chamber design, the effects of cam duration and overlap on dynamic compression ratio, and definitely forced induction detonation characteristics relating to mechanical compression ratios. Report back your findings for us.

Last edited by sixshooter; 03-26-2019 at 07:15 AM.
sixshooter is offline  
Old 03-26-2019, 08:00 AM
  #95  
Ich verstehe nur Bahnhof
iTrader: (4)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 4,512
Total Cats: 493
Default

Originally Posted by sixshooter View Post
All engines must have identical design properties in your world. Why doesn't my Miata make power at 14,000 rpm reliably like my motorcycle did? Surely they are both engines! Maybe I am just a fool for not trying to rev my Miata so high. I haven't tried it and it just might work.

I'm going to recommend you do some reading on internal combustion engine design and theory of operation before making recommendations to the other noobs. Study things like rod ratio, undersquare versus oversquare engine designs, quench, tumble and swirl, combustion chamber design, the effects of cam duration and overlap on dynamic compression ratio, and definitely forced induction detonation characteristics relating to mechanical compression ratios. Report back your findings for us.

No *****, he won't.
psyber_0ptix is online now  
Old 03-26-2019, 08:34 AM
  #96  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,369
Total Cats: 1,649
Default

Originally Posted by sixshooter View Post
All engines must have identical design properties in your world. Why doesn't my Miata make power at 14,000 rpm reliably like my motorcycle did? Surely they are both engines! Maybe I am just a fool for not trying to rev my Miata so high. I haven't tried it and it just might work.

I'm going to recommend you do some reading on internal combustion engine design and theory of operation before making recommendations to the other noobs. Study things like rod ratio, undersquare versus oversquare engine designs, quench, tumble and swirl, combustion chamber design, the effects of cam duration and overlap on dynamic compression ratio, and definitely forced induction detonation characteristics relating to mechanical compression ratios. Report back your findings for us.
Ew that sounds hard though.
concealer404 is online now  
Old 03-26-2019, 09:29 AM
  #97  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 19,329
Total Cats: 2,434
Default

Originally Posted by concealer404 View Post
Ew that sounds hard though.
Oh it is, baby. Rock hard.

How about maybe just the difference between static compression ratio and dynamic compression ratio?

It would be nice but it's not necessary if 208 learns anything or not as long as he's not spouting antithetical bullshit to trusting and unsuspecting noobs.
sixshooter is offline  
Old 03-26-2019, 09:43 AM
  #98  
Elite Member
iTrader: (3)
 
concealer404's Avatar
 
Join Date: Aug 2011
Posts: 10,369
Total Cats: 1,649
Default

Yeah but with such low compression how do you overfill your pistons?
concealer404 is online now  
Old 03-26-2019, 10:01 AM
  #99  
Moderator
iTrader: (12)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 19,329
Total Cats: 2,434
Default

Originally Posted by concealer404 View Post
Yeah but with such low compression how do you overfill your pistons?
I use smaller air so I can fit more inside.
sixshooter is offline  
Old 03-26-2019, 10:15 AM
  #100  
Ich verstehe nur Bahnhof
iTrader: (4)
 
psyber_0ptix's Avatar
 
Join Date: Mar 2012
Location: Northern VA
Posts: 4,512
Total Cats: 493
Default

Originally Posted by concealer404 View Post
Yeah but with such low compression how do you overfill your pistons?
Originally Posted by sixshooter View Post
I use smaller air so I can fit more inside.
psyber_0ptix is online now  

Thread Tools
Search this Thread
Quick Reply: 250-300WHP Build


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.