Intro turned hopefully epic build thread - Page 9 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Build Threads Building a motor? Post the progress here.

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 07-24-2016, 09:14 PM   #161
Junior Member
Thread Starter
 
Join Date: Dec 2013
Location: Little Rock, Ar
Posts: 107
Total Cats: 24
Default

This is the particular one I'm looking at. It's the closest one to a gt3076r that I could find. Only bad part is it doesn't have the internal wastegate hole in the turbine housing so id have to drill one in just the right spot. CXRacing Stage III Ceramic Ball Bearing T04E GT35 Spec Turbo Charger T3 5 Bolt
92turbomiata is offline   Reply With Quote
Old 07-25-2016, 02:24 AM   #162
Miata Traitor
 
astral's Avatar
 
Join Date: Jul 2016
Location: Bay Area
Posts: 336
Total Cats: 31
Default

Quote:
Originally Posted by 92turbomiata View Post
Finally got a decent video of a couple 2-3 pulls since it is running a lot better. It was hitting about 15psi then immediately dropping to 10-11 and staying there. So these runs were basically on 11psi and its still pretty damn fast. Once I can get the EBC to behave properly it will be turned up to about 20psi. That should be scary. Anyways heres the video

TurboMiata 2-3 gear pull - YouTube
Looked very fun while it lasted. Very shitty about your engine grenading due to manufacturer defect.
astral is offline   Reply With Quote
Old 07-25-2016, 09:06 AM   #163
Junior Member
Thread Starter
 
Join Date: Dec 2013
Location: Little Rock, Ar
Posts: 107
Total Cats: 24
Default

Quote:
Originally Posted by astral View Post
Looked very fun while it lasted. Very shitty about your engine grenading due to manufacturer defect.
That video was on the old motor with the supertech pistons and eBay rods before the wrist pin broke. The new engine runs even better and makes way more power and is the engine that is currently in the car running. I figured out the noise it was making which turned out to be a loose crank pulley. I have now taken those 4 small bolts out, loctited them and retorqued them down so hopefully they'll stay in place now. I'll try and get some new video up soon of the dash while doing a couple pulls. I can tell you it's way faster than the last video
92turbomiata is offline   Reply With Quote
Old 07-25-2016, 01:10 PM   #164
Moderator
iTrader: (10)
 
sixshooter's Avatar
 
Join Date: Nov 2008
Location: Tampa, FL
Posts: 14,078
Total Cats: 1,165
Default

Your spool isn't poor because of the journal bearing. It is poor because the turbo is too large for the amount of exhaust you have available to operate it. You are throwing a hot dog down a hallway, if you get what I'm saying.

Sell it to someone with an engine over 2 liters and get a t3 like Braineack and others are using. They spool well and make great power and are journal bearing. Chinese ball bearing turbos are known to be unreliable.
sixshooter is online now   Reply With Quote
Old 07-25-2016, 01:37 PM   #165
Junior Member
Thread Starter
 
Join Date: Dec 2013
Location: Little Rock, Ar
Posts: 107
Total Cats: 24
Default

I agree that the turbo is really to big. I just had it laying around for my old eagle talon when I had it, and I got it used for a cheap price. It was either that or put a super small eBay turbo on there that i also had laying around and I choose to go with the bigger turbo for now since I was aiming for 400+hp. All though it does put a big *** grin on your face when there's nothing, nothing and then bam it kicks in really hard and then it pulls like a freight train. I'll get something more appropriately sized when the time and money is right
92turbomiata is offline   Reply With Quote
Old 07-28-2016, 08:58 AM   #166
Junior Member
iTrader: (1)
 
Downmented's Avatar
 
Join Date: Oct 2014
Location: Annapolis, MD
Posts: 451
Total Cats: 54
Default

Well, that's been an interesting read, lots of ups and downs, mostly downs it seems. I wish you had stuck another set of 11:1 pistons back in there with the new block, and I will say to go with an EFR, however I think I am a bit biased lol.

Also, in regards to the wire tuck, I like where you bolted the fuse box, when the dash went back on did it make access of the fuses difficult or was fitting the dash back on hindered by the location of it?

My one single complaint is that you need to fire the machine shop that sends out garbage finishes like that, the finish on your short block looks like absolute poop in my opinion. I would have been extremely unhappy if I received that as a finished product. And since I like to ***** out pics, and its relevant, here is the finish of my block. Excited to follow this build now!





Last edited by Downmented; 07-28-2016 at 09:13 AM.
Downmented is offline   Reply With Quote
Old 07-28-2016, 09:41 AM   #167
Junior Member
Thread Starter
 
Join Date: Dec 2013
Location: Little Rock, Ar
Posts: 107
Total Cats: 24
Default

That's does look a lot better than the deck on my block but in the machine shops defense they didn't actually deck it. At the time I didn't have a lot of extra money so I just had them check to make sure it was flat within tolerance and then I cleaned it up the best I could. Looking back now I wish I would have waited a little longer and just had them deck the surface but I have had zero issues from not having it decked.
Also after the first engine got messed up I was hesitant to put supertech pistons back in even with all new "turbo" wrist pins. I would have also had to source another block. It would have come out close to the same price reusing the supertechs, finding a new block and then having it hot tanked, magnafluxed, bored, honed and decked and new rings. I got he next size up wisecos in the highest OTS compression they had and just had the old block rebored and honed.

The fuse block there didn't get in the way of putting the dash back on at all. The glove box still has plenty of room to open and close and when I do need to get back there it's just removing the 2 screws holding the glove box in, drop it out of the way and then it's right there easy to get too. Although I haven't had to get to it yet.

Car is still running freaking awesome. Currently dealing with what feels like a slight hesitation close to redline/full boost. Sometimes it does it, sometimes it doesn't. Hopefully I can figure it out this weekend and hopefully get some videos posted.

Oh and an efr would be lovely but that would require new mani, turbo, and downpipe. Maybe one day I'll upgrade but for now I have a baby due in November to worry about.
92turbomiata is offline   Reply With Quote
Old 07-28-2016, 09:45 AM   #168
Junior Member
iTrader: (1)
 
Downmented's Avatar
 
Join Date: Oct 2014
Location: Annapolis, MD
Posts: 451
Total Cats: 54
Default

Totally understandable on the finance front, sometimes you gotta do what you gotta do
In regards to the hesitation, is it more of a sputter? Have you considered possible spark blowout? Check you plug gaps and possibly lower them slightly and see if that improves. Worth a shot!

Congrats on the upcoming rugrat!
Downmented is offline   Reply With Quote
Old 07-28-2016, 09:49 AM   #169
Junior Member
Thread Starter
 
Join Date: Dec 2013
Location: Little Rock, Ar
Posts: 107
Total Cats: 24
Default

It does kind of feel like spark blowout but I have d585 coils and the spark plug gap IIRC is between .030-.035. That was the first thing I was going to check was spark plugs/wires and go from there. Can't find anything in the logs that would cause it.
92turbomiata is offline   Reply With Quote
Old 07-28-2016, 09:52 AM   #170
Junior Member
Thread Starter
 
Join Date: Dec 2013
Location: Little Rock, Ar
Posts: 107
Total Cats: 24
Default

It has the same kind of feeling as if it goes pig rich and stutters just a bit and then picks back up and keeps pulling. It is a little rich when it happens but not rich enough to cause a sputter/misfire I would think. It's around 11.2 afr when it happens on a gas scale wideband
92turbomiata is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 03:00 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 07:18 PM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 09:17 AM
Leaky Wilwoods mx592 Suspension, Brakes, Drivetrain 1 10-01-2015 12:45 AM


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 05:36 PM.