How big is too big?? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


DIY Turbo Discussion greddy on a 1.8? homebrew kit?

Reply
 
 
 
LinkBack Thread Tools
Old 04-09-2013, 11:30 AM   #21
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,175
Total Cats: 2,578
Default

Quote:
Originally Posted by thirdgen View Post
That's why I wanted a big compressor, and also because I'm sick of the JR M45 similar spool of my SR20. Is it a waste to run a large turbo at low boost and not "use it to it's fullest"? Maybe. When said turbo only costs $270 though, why not? I guess I need to find my happy medium between what I'm going from to what would be total unpractical over kill. That's why I mentioned the Godspeed 2876. If my memory serves correct, didn't Y8s make 265whp at 9.5psi on a 2876? I'm sure a godspeed would make a little less, because not garrett, but how would spool be?
You seriously don't remember this exact conversation we had? I mean, you literally said what you just said:

"I want none of the power, and none of the spool"

I seriously can't believe you want the WORST of both worlds.

You should just get a Rotrex
18psi is offline   Reply With Quote
Old 04-09-2013, 11:44 AM   #22
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

If you think your car isnt fun now with good area under curve, you're going to hate it when it has a ****-poor boost threshold, then power capped so you don't blow your old tired motor.

but who am I to tell you what to do.
Braineack is offline   Reply With Quote
Old 04-09-2013, 11:52 AM   #23
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,175
Total Cats: 2,578
Default

I am now a firm believer that anyone running anything larger than 2560 on a stock motor is silly. (I know, I know, many others have been preaching this for years)

Seriously, just get a rotrex. Its exactly what you're looking for: none of the torque and none of the power, and ALL the cool AIT's you're looking for
18psi is offline   Reply With Quote
Old 04-09-2013, 11:57 AM   #24
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

winner!
Braineack is offline   Reply With Quote
Old 04-09-2013, 12:25 PM   #25
Slowest Progress Ever
Thread Starter
iTrader: (26)
 
thirdgen's Avatar
 
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 5,806
Total Cats: 183
Default

Quote:
Originally Posted by Braineack View Post
so you don't blow your old tired motor.
Who said anything about me using my old tired motor?

Quote:
Originally Posted by 18psi View Post
Seriously, just get a rotrex.
Funny thing is my friend who just bought a brand new Civic Si has been preaching the kraftwerks setup to me. I'm like, "how about no"?

Ok, so I'm narrowing it down to a bit bigger than 2560, but smaller than 2876.
Still want to run EWG though. I have a feeling that I'm going to do something that makes you guys say, "he makes really good useable power and has great spool/ driveability, but why did he do it like that??"
thirdgen is offline   Reply With Quote
Old 04-09-2013, 12:29 PM   #26
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,175
Total Cats: 2,578
Default

Quote:
Originally Posted by thirdgen View Post
Who said anything about me using my old tired motor?



Funny thing is my friend who just bought a brand new Civic Si has been preaching the kraftwerks setup to me. I'm like, "how about no"?

Ok, so I'm narrowing it down to a bit bigger than 2560, but smaller than 2876.
Still want to run EWG though. I have a feeling that I'm going to do something that makes you guys say, "he makes really good useable power and has great spool/ driveability, but why did he do it like that??"
I can promise you that nothing you will do will surprise anyone. There is nothing new under the sun, the only guys coming out with cool "new" stuff are much smarter than you, I, and everyone in this thread.

What you will do will either be smart/logical, or dumb/pointless.

That's about it.
18psi is offline   Reply With Quote
Old 04-09-2013, 12:32 PM   #27
Elite Member
iTrader: (2)
 
Join Date: Aug 2012
Location: Indianapolis
Posts: 3,325
Total Cats: 235
Default

New hotside parts + no EFR = ban

Just get a disco potato.
thenuge26 is offline   Reply With Quote
Old 04-09-2013, 12:39 PM   #28
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

Quote:
Originally Posted by thirdgen View Post
Who said anything about me using my old tired motor?
You never said anything to suggest otherwise...


also:

Quote:
My goal is to max out my RX8 425cc injectors by 10psi. I'm guessing this should be about 260whp?? (correct me if I'm wrong)
Thanks.
is a silly silly goal and unrealistic accomplishment. Like you've been here long enough to know this is some n00b *** **** you just posted.


When you start taking yourself seriously, I will as well. Untill then...
Braineack is offline   Reply With Quote
Old 04-09-2013, 12:46 PM   #29
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,175
Total Cats: 2,578
Default

Quote:
Originally Posted by Braineack View Post
You never said anything to suggest otherwise...


also:



is a silly silly goal and unrealistic accomplishment. Like you've been here long enough to know this is some n00b *** **** you just posted.


When you start taking yourself seriously, I will as well. Untill then...
lolol +1 and props
18psi is offline   Reply With Quote
Old 04-09-2013, 12:51 PM   #30
Elite Member
iTrader: (5)
 
Erat's Avatar
 
Join Date: Oct 2011
Location: Detroit
Posts: 4,196
Total Cats: 260
Default

Brain he said this in his first post.

Quote:
Originally Posted by thirdgen View Post
I decided that since I hardly drive the thing anyway, it's time to build my spare motor/ install the door bars/ put a big turbo on it.
Erat is offline   Reply With Quote
Old 04-09-2013, 12:55 PM   #31
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,847
Total Cats: 1,788
Default

I must of missed that when I acutally read his goal about maxing tiny injectors to create 700hp within the horrid block of text.
Braineack is offline   Reply With Quote
Old 04-09-2013, 10:52 PM   #32
Elite Member
 
Join Date: Mar 2010
Location: Detroit
Posts: 1,524
Total Cats: 27
Default

I'm running the same injectors with the same fuel pressure at 15psi, dc around 90%, 12:1 a/f. Turn up the boost broham.

also, this big is too big.
Attached Thumbnails
How big is too big??-am_79214_6069164_807811.jpg  

Last edited by flounder; 04-09-2013 at 11:02 PM.
flounder is offline   Reply With Quote
Old 04-09-2013, 10:59 PM   #33
NB/VVT Connoisseur
iTrader: (23)
 
viperormiata's Avatar
 
Join Date: Aug 2008
Location: Key West
Posts: 6,069
Total Cats: 253
Default

No china-turbo, please. Do yourself that favor. There are so many better options out there and turbo prices are getting lower for things like Precision and Borg Warner.

If you're debating a new turbo and modifying your older parts (cast log), do yourself another favor and just do it once and do it right with better parts.

Don't get the idea that you're "saving" anything by trying to put a shine on ****. In the end, you won't be happy because you made compromises.

Good luck.
viperormiata is offline   Reply With Quote
Old 04-09-2013, 11:35 PM   #34
Senior Member
iTrader: (8)
 
Join Date: Jun 2010
Location: Navarre, FL
Posts: 1,127
Total Cats: 39
Default

EFR6758 or GTX2867R

400whp capable terboz that will have plenty of room to grow, and not be too oversized for stock motor, mid 200 HP region that low end will be terrible
aaronc7 is offline   Reply With Quote
Old 04-10-2013, 12:30 AM   #35
Slowest Progress Ever
Thread Starter
iTrader: (26)
 
thirdgen's Avatar
 
Join Date: Oct 2007
Location: The coal ridden hills of Pennsylvania
Posts: 5,806
Total Cats: 183
Default

Quote:
Originally Posted by flounder View Post
I'm running the same injectors with the same fuel pressure at 15psi, dc around 90%, 12:1 a/f. Turn up the boost broham.

also, this big is too big.
I'm too lazy to click on your build thread. What turbo are you running, what whp do you think you're making at that duty cycle?
Also...that's too big? That's an answer know as the deuce bigolo: would ya? "If she paid me enough, then yes."
thirdgen is offline   Reply With Quote
Old 04-10-2013, 12:57 AM   #36
Elite Member
iTrader: (10)
 
soviet's Avatar
 
Join Date: Jan 2010
Location: VA
Posts: 3,517
Total Cats: 256
Default

Buy an EFR and blow up your engine at 12psi. Then rebuild it.

It will be very fun and expensive, I promise!
soviet is offline   Reply With Quote
Old 04-10-2013, 11:57 AM   #37
Elite Member
 
Join Date: Mar 2010
Location: Detroit
Posts: 1,524
Total Cats: 27
Default

Its a begi/churbo 2854. Never dyno'd and I'll probably get flamed but I'm guessing around 265-275whp? Its fast. I still find myself giggling like a school girl after roll on's. I get to drive fast cars quite a bit, and the Mazda almost always feels quicker than most of them, at least up to 120mph or so.
flounder is offline   Reply With Quote
Old 04-10-2013, 12:24 PM   #38
Elite Member
iTrader: (11)
 
Join Date: Jun 2007
Location: Overland Park, Kansas
Posts: 5,382
Total Cats: 43
Default

How can you be bored with 225whp? My POS probably doesn't make 100whp right now and it's a blast to drive..
elesjuan is offline   Reply With Quote
Old 04-10-2013, 01:27 PM   #39
Junior Member
 
Join Date: Oct 2010
Location: las vegas
Posts: 244
Total Cats: 4
Default

Wouldn't a holset like viperormiata's do this? And be relatively inexpensive.
hochkis is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Need help - Stock Balancer and Fastforward overlay pulleys Frank_and_Beans Supercharger Discussion 13 09-12-2016 09:17 PM
elesjuan's mediocre 95 Miata adventure (google fiber edition) elesjuan Build Threads 8 02-16-2016 09:36 PM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
New M62 Miata owner Pist0n Meet and Greet 4 10-01-2015 09:18 PM
Dsm t25 big16g or somethig else? karcher DIY Turbo Discussion 0 09-06-2015 06:02 PM


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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 05:32 AM.