My turbo build. - 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 08-25-2007, 03:21 PM   #1
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default My turbo build. (More pics)

Finally got her running last night, Thanks to Eli (M2-1028 on clubroadster) for your help. Anyway, Its a mostly Begi setup, set to 7psi

Begi manifold
Begi T25/28 ball bearing oil & water cooled turbo
Begi 2.5" down pipe
Begi fmic
1.8L injectors
DIY dual feed fuel rail
Begi AFPR
DIY intercooler piping
Ebay boost controller
Autometer boost guage
DIY heat shield
Fuel pressure guage

Still need to replace fuel pump and clutch (hopefully next weekend). I think the oil return is leaking at the turbo so I need to take of that, but otherwise she runs great at 7psi except for the clutch slip. So here's the pics. Feel free to comment.

Name:  DSC04375.jpg
Views: 1
Size:  67.6 KB
Name:  DSC04363.jpg
Views: 1
Size:  54.7 KB
Name:  DSC04373.jpg
Views: 1
Size:  72.4 KB
Name:  DSC04367.jpg
Views: 1
Size:  101.3 KB
Name:  DSC04370.jpg
Views: 1
Size:  83.5 KB
Name:  DSC04369.jpg
Views: 1
Size:  80.6 KB
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote

Last edited by levnubhin; 08-27-2007 at 12:48 PM. Reason: More pics
levnubhin is offline   Reply With Quote
Old 08-25-2007, 03:38 PM   #2
Elite Member
iTrader: (6)
 
Loki047's Avatar
 
Join Date: Sep 2005
Location: Chicago
Posts: 4,145
Total Cats: 0
Default

Damn thats a good looking AFPR
Loki047 is offline   Reply With Quote
Old 08-25-2007, 03:43 PM   #3
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

Quote:
Originally Posted by Loki047 View Post
Damn thats a good looking AFPR

Lol, thanks to u. BTW thanks for the quick shipping
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 08-25-2007, 03:47 PM   #4
Elite Member
iTrader: (5)
 
akaryrye's Avatar
 
Join Date: Jul 2006
Location: Central California
Posts: 2,526
Total Cats: 0
Default

Hey, nice wheels mang, thats what I run with some azenis I cant tell if you got those too. Anyway, looks nice, but after running megasquirt for awhile I couldnt go back. also i like your choice of material for the heatshield
akaryrye is offline   Reply With Quote
Old 08-25-2007, 03:56 PM   #5
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

Quote:
Originally Posted by akaryrye View Post
Hey, nice wheels mang, thats what I run with some azenis I cant tell if you got those too. Anyway, looks nice, but after running megasquirt for awhile I couldnt go back. also i like your choice of material for the heatshield
Thanks bro. I have the RS2's on there. I want Megasquirt also, but I have to buy plane tickets to NY for Xmas so its gonna have to wait.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 08-25-2007, 04:22 PM   #6
Elite Member
iTrader: (7)
 
samnavy's Avatar
 
Join Date: Apr 2006
Location: VIRGINIA BEACH, VA
Posts: 6,020
Total Cats: 175
Default

What have you done to tune it?
Did you correctly set the 0~ fuel pressure?
With the stock fuel pump and 1.8's, you're probably at the limit of your fuel at 7-8psi. I hope for now that you're running on wastegate only and haven't dialed in anything extra with the MBC.

The only way to tell for sure is to get it to a dyno so you can watch A/F's and the fuel pressure gauge during a pull. Have you tested the stock fuel pump to see what it will put out? I think you should probably dial the Begi to it's max rate of rise to get the most out of the pump as you can. I can see the adjustment needle is backed out a lot... I suspect (without doing the math) that you're running lean.

How far does that pressure gauge read? You'll need one that reads at least to 130psi if you plan to keep the 1.8injectors and turn the boost up anymore. I did a writeup on a really trick way to monitor fuel pressure from the cockpit without the expense of an electric gauge. You just use WI quick-connectors... here:
https://www.miataturbo.net/showpost....1&postcount=24
With a wideband and the ability to see your fuel pressure, you've got a basic tuning solution.

With the gap between your heat shield and engine block, you're going to slow-roast your heater-core lines... get some good heat wrap and make sure the entirety of the hose back there is shielded... but I totally dig the diamond-plate... looks very nice!

Ditch the goofy *** plastic crap covering the heater overflow line and the throttle cable. All that beautitul Begi hardware ruined by Pep-Boys ricer ****.

The rest of the setup looks good. It's very clean and I looks like you really took your time and put in the effort. It's quite similar to mine overall, except it's a slower color
With MS and 440's, you're ready for 15psi!
samnavy is offline   Reply With Quote
Old 08-25-2007, 07:39 PM   #7
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

I still have to adjust fuel pressure. I will do that tomorrow as I was actually just looking over Begi's instructions on adjusting the AFPT. The MBC isnt hooked yup so im only at 7psi. My pressure guage only reads to 100 psi so I guess I will have to get another one. I will definately check out you write up about checking fuel pressure. Can you please tell me what a wideband is? The heater hose is already completely sleaved with stuff I got from wirecare.com. Your right about the red wire loom it does need to go. Future plans do call for MS with 440's but after XMAS.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 08-26-2007, 12:20 AM   #8
Elite Member
iTrader: (9)
 
Saml01's Avatar
 
Join Date: Jul 2007
Location: NYC
Posts: 5,730
Total Cats: 2
Default

I like how you routed your charge pipe upwards, can you get me some more pics of that please. I think its a simpler then going downward.
Saml01 is offline   Reply With Quote
Old 08-26-2007, 12:51 AM   #9
Elite Member
iTrader: (12)
 
Join Date: Jan 2007
Location: Hermosa Beach, CA
Posts: 2,575
Total Cats: 11
Default

Quote:
Originally Posted by Saml01 View Post
I like how you routed your charge pipe upwards, can you get me some more pics of that please. I think its a simpler then going downward.
Same here, Finally some pics of what my setup will be like. Send some more pics to [email protected] if you can. This is how my setup is going to be, the turbo outlet faceing up, I even have the BEGI mani.
cardriverx is offline   Reply With Quote
Old 08-26-2007, 07:48 PM   #10
Elite Member
iTrader: (7)
 
samnavy's Avatar
 
Join Date: Apr 2006
Location: VIRGINIA BEACH, VA
Posts: 6,020
Total Cats: 175
Default

"Wideband" or WB02 measures the amount of unburned oxygen in your exhaust. There is a sensor that you install (preferably in your Downpipe) and a small control box of some sort that has the little computer brain in it.

By measuring the amount of unburned Oxygen, you can determine whether you need to add or subtract fuel to get the proper Air-to-Fuel A/F ratio you're shooting for. 14.7:1 is stoichiometric, but forced induction cars like to run a little richer than that because a little extra fuel helps keep combustion temperatures lower.
samnavy is offline   Reply With Quote
Old 08-26-2007, 10:36 PM   #11
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

Sweet now where is the best place to get a wideband and there good and bad ones?

Thanx for all ur help.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 08-26-2007, 10:51 PM   #12
I'm Miserable!
iTrader: (1)
 
Join Date: Oct 2005
Location: Columbia, SC
Posts: 858
Total Cats: 0
Default

nice setup but isn't a miata like a girl's car? Your engine bay is cleaner than most of my dishes. Get some vids of that hoss.
SloS13 is offline   Reply With Quote
Old 08-26-2007, 10:56 PM   #13
Elite Member
iTrader: (13)
 
cjernigan's Avatar
 
Join Date: Oct 2006
Location: Atlanta, GA
Posts: 8,147
Total Cats: 6
Default

Quote:
Originally Posted by levnubhin View Post
Sweet now where is the best place to get a wideband and there good and bad ones?

Thanx for all ur help.
WOT or diyautotune.
The AEM complete or the Innovate LC-1 with DB gauge will serve you fine. Both are the same cost from WOT.
cjernigan is offline   Reply With Quote
Old 08-26-2007, 11:12 PM   #14
Senior Member
iTrader: (6)
 
Join Date: Mar 2005
Location: Sammamish, Washington
Posts: 1,396
Total Cats: 0
Default

Did someone say wideband?
Kelly is offline   Reply With Quote
Old 08-26-2007, 11:21 PM   #15
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

Quote:
Originally Posted by SloS13 View Post
nice setup but isn't a miata like a girl's car?.
UMM, if you say so
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 08-26-2007, 11:22 PM   #16
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

Quote:
Originally Posted by Wideopentuning View Post
Did someone say wideband?

Yeah im lookin for one.
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 08-26-2007, 11:33 PM   #17
Elite Member
iTrader: (7)
 
samnavy's Avatar
 
Join Date: Apr 2006
Location: VIRGINIA BEACH, VA
Posts: 6,020
Total Cats: 175
Default

Lev, there are two popular WB02's that we usually recommend. The first is from Innovate Motorsports called the LC1. It goes for under $200 but does not include a gauge. What it does include is a really nice software package that you load onto your laptop. Since you really only need to monitor WB02 readings during tuning, driving around with a laptop on the passenger seat for an afternoon isn't that big of a deal.

The other is called the AEM... and it's controller is integrated into a standard sized gauge and it goes for about $250.

Almost all widebands include an output that you use to feed a gauge... and another output you can use to send the A/F reading wherever you need it... like into your engine computer. In a stock car, the engine computer takes a reading from the stock 02 sensor in the exhaust, but stock sensors are always NB02 (Narrowband 02). A stock cars exhaust gas will almost always be somewhere near stoichiometric and the sensor doesn't need as big a range as we do when trying to tune forced induction engines. Normally, when you buy a WB02, you can eliminate the factory NB02 sensor and use the additional output of your new WB02 to feed the engine computer (especially if it's an aftermarket ECU).

DIYAutotune, makers of Megasquirt, recommend and sell Innovate products, so most MS guys run it.

Guys who don't want to spend extra money on a gauge usually get the AEM cause it includes one.

WideOpenTuning, who posted above, is a forum contributor and can get you good rates on both types of WB's.
samnavy is offline   Reply With Quote
Old 08-27-2007, 12:03 AM   #18
Elite Member
iTrader: (6)
 
Loki047's Avatar
 
Join Date: Sep 2005
Location: Chicago
Posts: 4,145
Total Cats: 0
Default

Lev, Splitime is selling a used LC-1, get it on the cheap
Loki047 is offline   Reply With Quote
Old 08-27-2007, 10:28 AM   #19
Elite Member
Thread Starter
iTrader: (30)
 
Join Date: Aug 2007
Location: Va Beach
Posts: 7,282
Total Cats: 0
Default

Quote:
Originally Posted by Loki047 View Post
Lev, Splitime is selling a used LC-1, get it on the cheap

Where did you see that?
__________________
Best Car Insurance | Auto Protection Today | FREE Trade-In Quote
levnubhin is offline   Reply With Quote
Old 08-27-2007, 10:51 AM   #20
Elite Member
iTrader: (6)
 
Loki047's Avatar
 
Join Date: Sep 2005
Location: Chicago
Posts: 4,145
Total Cats: 0
Default

on AIM i sent im a link to this thread
Loki047 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
ISO 1.6 turbo cast iron manifold cale saurage DIY Turbo Discussion 16 10-01-2015 12:25 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 08:28 PM.