how long will it last?!! - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


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

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 06-14-2009, 12:00 AM   #1
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Dec 2007
Location: Springfield, Mass
Posts: 364
Total Cats: 0
Default how long will it last?!!

Ok, I've been reading of people who put in a turbo for cheap. So i went with the begi-s non-intercooled, garrett 2554, walbro 255HP, begi fmu set for 50 at 0 psi, only running 5-6psi, and full 2.5 inch exhaust from dump back.

This is on a 96 1.8 swap into a stock 90 still running the stock ecu. Begi told me to retard the timing to 6 degrees BTD. I also have a egt that reads all the way to 2000 degrees f. At redline at max boost the egt only reads 1320 f. This seems a little low to me.

My question is how long can i run on this tuning? Also it seems a little sluggish at full throttle than at 3/4. What would be some recommendations to fix this with only a little dough.
seraph is offline   Reply With Quote
Old 06-14-2009, 01:30 AM   #2
:(
iTrader: (7)
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,281
Total Cats: 2
Default

If its not detonating you can run it until your pump gives out. You probly have to much pressure on the FMU adjust your fueling to pic up alil power however peiceing together some WI or a DIY shudder intercooler will help you make more power in the long run.
magnamx-5 is offline   Reply With Quote
Old 06-14-2009, 01:40 AM   #3
Elite Member
iTrader: (1)
 
Join Date: Jun 2007
Location: VA, Germany, Afghanistan
Posts: 2,967
Total Cats: 3
Default

even a bipes type unit will help you out a little bit, you've got absolutely no aftermarket electronics controlling your ignition right now. If you can solder look into a DIY megasuirt (not the PnP)for not much more $$.
KPLAFIN is offline   Reply With Quote
Old 06-15-2009, 05:54 PM   #4
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Dec 2007
Location: Springfield, Mass
Posts: 364
Total Cats: 0
Default

what is this diy megasquirt the only one i've ever heard of is the pnpmegasquirt? I looked on diy autotune but there is no description of the packages. Which one should i be looking at?
seraph is offline   Reply With Quote
Old 06-15-2009, 06:02 PM   #5
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

well you said nothing about monitoring detonation or AFR in general so I suspect this car will run great for another 100-k miles.
hustler is offline   Reply With Quote
Old 06-16-2009, 06:52 PM   #6
Junior Member
 
Join Date: Jan 2006
Location: Toronto
Posts: 182
Total Cats: 0
Default

Quote:
Originally Posted by seraph View Post
what is this diy megasquirt the only one i've ever heard of is the pnpmegasquirt? I looked on diy autotune but there is no description of the packages. Which one should i be looking at?
DIY as in you-build-it-yourself. This is a great way to learn the ins and outs of engine management.

The answer is: no one can say. The better your engine control and tune, the longer it will last.

Retarding the stock timing across the range is the ham-fisted approach, and you're compromising big time. Standalone engine management (as opposed to a piggy-back) is the choice solution. Megasquirt will run you a couple of hundred dollars and is a huge bang-for-the-buck item.

May as well sell the FMU when you go w/ Megasquirt, get larger injectors and a wideband at least.

Last edited by fluke; 06-16-2009 at 07:03 PM.
fluke is offline   Reply With Quote
Old 06-16-2009, 08:52 PM   #7
Elite Member
iTrader: (7)
 
Join Date: Jan 2007
Location: Renton Washington
Posts: 1,742
Total Cats: 3
Default

Quote:
Originally Posted by seraph View Post

my question is how long can i run on this tuning? .
7.4
SKMetalworks is offline   Reply With Quote
Old 06-17-2009, 11:48 AM   #8
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Dec 2007
Location: Springfield, Mass
Posts: 364
Total Cats: 0
Default

thanks for the advice which megasquirt kit should i be looking for if i wanted to go the diy route? I just bought a wideband from aem so i will have that part taken care of.
seraph is offline   Reply With Quote
Old 06-17-2009, 11:51 AM   #9
Senior Member
iTrader: (1)
 
Join Date: Jun 2006
Location: Outside of the Loop-ATL
Posts: 754
Total Cats: 0
Default

Quote:
Originally Posted by sbkcocker499 View Post
7.4
you got it wrong, it's

42
wildfire0310 is offline   Reply With Quote
Old 06-17-2009, 12:10 PM   #10
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Dec 2007
Location: Springfield, Mass
Posts: 364
Total Cats: 0
Default

never mind on which kit to buy i just found the sticky explaining and listing all that i need.
seraph is offline   Reply With Quote
Old 06-17-2009, 01:22 PM   #11
I haz no trubo
iTrader: (2)
 
Oscar's Avatar
 
Join Date: Jan 2007
Location: Bolton, UK
Posts: 3,021
Total Cats: 114
Default

Quote:
Originally Posted by wildfire0310 View Post
you got it wrong, it's

42
is that metric or SAE?
Oscar is offline   Reply With Quote
Old 06-17-2009, 09:28 PM   #12
Junior Member
 
Join Date: Jan 2006
Location: Toronto
Posts: 182
Total Cats: 0
Default

Quote:
Originally Posted by seraph View Post
thanks for the advice which megasquirt kit should i be looking for if i wanted to go the diy route? I just bought a wideband from aem so i will have that part taken care of.
MS-I V3.0 if DIY, MS-II if you're adventerous, MSPNP if you're not up for the challenge.

Also, for better or worse, this website doesn't work the way you think it does.

This is more an "advanced users" forum, Everyone here will expect you to do your own research, so start doing searches on this site. Any basic questions like those you've asked are going to be met with abuse and suggestions that you do creative things with transgenders.....it's just like that here.

Ok, have fun.
fluke is offline   Reply With Quote
Old 06-18-2009, 10:16 PM   #13
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Dec 2007
Location: Springfield, Mass
Posts: 364
Total Cats: 0
Default

thanks for the help and heads up fluke. Yeah i just read a thread the other day where someone asked some pretty noob questions and got toasted for it. I'll make sure to do more research before posting
seraph is offline   Reply With Quote
Old 06-18-2009, 10:57 PM   #14
Elite Member
iTrader: (17)
 
Join Date: Aug 2007
Location: Fort Myers, FL
Posts: 2,791
Total Cats: 130
Default

If you go to the for sale forum there's a sticky, Braineack builds and sells megasquirts really cheap. That's definitely the route I would take. With the proper tune on 5-6psi the car should last a very long time.
pdexta is offline   Reply With Quote
Old 06-20-2009, 11:12 AM   #15
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

It depends how you drive it. My car makes anywhere from 300whp to 250whp (when the turbo gets loose) on the track for 2-hours per track day...I don't expect the rings to last as long as it would at 28" of vacuum. If its street driven with 12:1 AFR in boost and enough spark to not burn the valves with no detonation then why would it not last as long as other production turbo cars, 200k?
hustler is offline   Reply With Quote
Old 06-20-2009, 11:59 PM   #16
Junior Member
Thread Starter
iTrader: (4)
 
Join Date: Dec 2007
Location: Springfield, Mass
Posts: 364
Total Cats: 0
Default

Well i will soon know what my afr's are and as far as i know i have no detonation (fingers crossed). I don't hear it and from what i heard it should be audible. I know that i'm runnin extremely rich most that i have asked have said that their egt's are around 1500-1600 and some higher at full boost at redline and im only at 1320! a megasquirt would be great!
seraph 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
Noob to Miataturbo from MA JxPhan Meet and Greet 3 10-02-2015 03:17 AM
Odd Steering issue interestedofold Suspension, Brakes, Drivetrain 5 09-29-2015 02:42 PM
WTB HPDE miata - Texas Voltwings Cars for sale/trade 0 09-27-2015 07:40 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 08:58 PM.