DIY preliminary results - Page 3 - 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 04-02-2008, 01:10 PM   #41
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default

A lap of a local road course. Lead and follow with crappy (overheated and greasy) 195/50-15 all season radials on 15x5.5 steelies. It was probably 6/10ths driving (short shifting, not braking hard, coasting...) but when pulling off the track after 15 minutes the coolant temp was 100C and the IAT was 31C! Not too bad for a stock radiator.

In front is a 99 sport driven by a CS national champ and in front of him is an SM2 'vette.




Also, wheel hop may be gone. I'll start a new thread and post pictures on that one.
dvcn is offline   Reply With Quote
Old 04-02-2008, 01:30 PM   #42
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,247
Total Cats: 291
Default

So I take it the mani is still working fine? no issues?
m2cupcar is offline   Reply With Quote
Old 04-02-2008, 05:08 PM   #43
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default

Quote:
Originally Posted by m2cupcar View Post
So I take it the mani is still working fine? no issues?
No leaks, no cracks..... knock on wood! It's been getting abused very regularly, 2-4 autox's a month plus street driving. I'm really asking for something to go wrong, but I have yet to tighten a bolt. Maybe I better go check all of them right now.

There was/is a semi minor issue. I have a slight knock under heavy load, probably due to carbon buildup. You can't really hear or feel it, it's only on the oil pressure gauge. I'm going to rig up a water drip to take care of this.
dvcn is offline   Reply With Quote
Old 04-08-2008, 06:31 PM   #44
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,247
Total Cats: 291
Default

Did you run your dump tube back into the downpipe/exhaust? I don't hear anything that sounds like a dump pipe venting boost in your vid.
m2cupcar is offline   Reply With Quote
Old 04-09-2008, 12:57 AM   #45
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default

I've been too lazy and I was going to wait until something broke before redoing the exhaust. (knock on wood again...) It is still the same open dump wastegate exhaust.

In that video (and on that track) I was trying to keep it quiet by short shifting and feathering the gas. The track had noise limits. There were no db meters out but I was told by many that I had the loudest car when I opened it up. There are a couple spots in the video that the wg is wide open.

In an open area it isn't that loud. If you are next to another car, wall or city driving it does get a lot of attention.
dvcn is offline   Reply With Quote
Old 11-17-2008, 12:36 PM   #46
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default

Not sure if this should go here or in the media section... just thought it might be interesting to compare this autox video to the one on the previous page. The difference in the car setup now is the 6sp, water injection coming on at 3psi, boost controller set up better but still around 12-13psi here and the used R comp tires have about 140 runs on them compared to a lot less before. There is a lot of shifting with the 6sp/4.10. I never drove the course well or even shifted in the right places but you get the idea. I was called for 2 cones, I think I hit 5 which is a new record for me!

At the end of the back straight the shift light came on at 7100 in 3rd gear. The rev limiter is set at 7400 but due to the bumps the peak was over 7800.

The passenger has the fastest local SM2 car which is a turbo S2k that traps the 1/4mi at 122mph.
dvcn is offline   Reply With Quote
Old 05-25-2009, 06:35 PM   #47
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default almost two year update

Since the last update there have been no problems I can remember. The Chinacharger is still going. I plan on running it to failure, however long that takes. I have set up three stage boost control, ZX-Tex may have already covered it. I'm able to run on wastegate, ecu controlled EBC (with dash mounted **** to vary between 8-15psi) and a ball/spring MBC. All this works with one solenoid, a couple of switches and a big ****. I'm happy with it.

The chassis now has 274k miles and the 96 1.8 (with JB Welded key/pulley) has around 203k miles. The 6 speed probably has 185k-190k on it. Average gas mileage has gone from 26-27mpg to 25-26mpg. I think I'm driving worse and the compression can't be going up.

Haven't been down the 1/4 mile in a while, need to go back soon. Here is some recent autox footage just to prove that it's still running. BTW, on the rev limiter in 3rd gear is 75-76mph.

dvcn is offline   Reply With Quote
Old 05-25-2009, 08:23 PM   #48
Senior Member
iTrader: (6)
 
Join Date: Sep 2007
Posts: 1,086
Total Cats: 30
Default

lookin great, let us know when the turbo gives up the ghost
albumleaf is offline   Reply With Quote
Old 05-26-2009, 10:45 AM   #49
Elite Member
iTrader: (5)
 
m2cupcar's Avatar
 
Join Date: Jan 2005
Location: Atlanta
Posts: 7,247
Total Cats: 291
Default

very cool - you are reaching legendary status with all your turbo "junk"
m2cupcar is offline   Reply With Quote
Old 05-26-2009, 05:21 PM   #50
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default

Quote:
Originally Posted by albumleaf View Post
lookin great, let us know when the turbo gives up the ghost
When it happens I'll post pictures and if we're lucky, video! Odds are that I'm going to put rods on the ground and pistons on the moon before the Chinacharger gives up.

I have an insurance policy - I picked up a 99 motor to build.

Quote:
Originally Posted by m2cupcar View Post
very cool - you are reaching legendary status with all your turbo "junk"
More like a poster child! I don't think I ever posted how little this setup cost (for the potential power level), most wouldn't believe it.
dvcn is offline   Reply With Quote
Old 05-31-2009, 01:26 AM   #51
I'm Miserable!
iTrader: (33)
 
Join Date: Jan 2009
Location: San Jose, CA
Posts: 1,066
Total Cats: -3
Default

hey DVCN how's the ebay charger and especially the Wastegate holding up?? im seriously considering the same set up you have but with a begi cast manifold/w EWG flange.


Thanks for the inspiration!

Last edited by railz; 05-31-2009 at 03:16 AM. Reason: im dumb...
railz is offline   Reply With Quote
Old 05-31-2009, 10:09 AM   #52
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default

Quote:
Originally Posted by railz View Post
hey DVCN how's the ebay charger and especially the Wastegate holding up?? im seriously considering the same set up you have but with a begi cast manifold/w EWG flange.

Thanks for the inspiration!
Two eBay parts went bad a long time ago. The knockoff Tial wg and the knockoff HKS bov. They were both from the same vendor who listed them with a warranty and didn't make good on it. I turned him in to eBay and oddly enough, eBay refunded me about 1/3 of the money. That vendor is no longer there, at least not under the same name.

The knockoff bov leaked from day one then had catastrophic failure. The wg had issues with the diaphragm and just acted weird.

Knockoff bov and wg were around $110 shipped each. Real 2nd gen HKS SSQV was $190 shipped. Real Tial 38mm was $210 iirc.

The chinacharger, ic, cheap silicon connectors and T clamps are all hanging in there. The cheap thin wall 'guaranteed to break into a zillion little pieces' tubular stainless exhaust manifold has been flawless too.

I sound like a broken record, but these are just my experiences, YMMV.
dvcn is offline   Reply With Quote
Old 05-31-2009, 05:04 PM   #53
I'm Miserable!
iTrader: (33)
 
Join Date: Jan 2009
Location: San Jose, CA
Posts: 1,066
Total Cats: -3
Default

HAHA , alright thanks for the heads up on the ebay wastegate, i actually saw the same one you had going for $75 shipped now but i guess i,ll save my self the hassle and go with a tial WG, i too have also had my share with ebay BOV's and they suck butt, leak no matter what like you said.

i,ll take my chances with the ebay turbo too, its been holding up for you so why not give it a try eh? only about $150 shipped.
railz is offline   Reply With Quote
Old 06-02-2009, 12:55 AM   #54
I EAT CUM
iTrader: (6)
 
Join Date: Sep 2008
Location: Redneck, Texas
Posts: 1,218
Total Cats: -1
Default

looks damned good
Turbo_4 is offline   Reply With Quote
Old 06-02-2009, 02:06 AM   #55
I'm Miserable!
iTrader: (33)
 
Join Date: Jan 2009
Location: San Jose, CA
Posts: 1,066
Total Cats: -3
Default

do you have any update pics of your set up especially that delicious chow mein turbo ;]
railz is offline   Reply With Quote
Old 06-02-2009, 01:28 PM   #56
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default

Quote:
Originally Posted by railz View Post
do you have any update pics of your set up especially that delicious chow mein turbo ;]
Take the picture from post #12, add an intercooler, a plastic cold air area (not really a box) and a lot of dirt and grime. I go offroad almost every day and never clean the car. My setup is not pretty. Most people that look under the hood wonder how it runs at all.
dvcn is offline   Reply With Quote
Old 06-02-2009, 01:33 PM   #57
I'm Miserable!
iTrader: (33)
 
Join Date: Jan 2009
Location: San Jose, CA
Posts: 1,066
Total Cats: -3
Default

Quote:
Originally Posted by dvcn View Post
Take the picture from post #12, add an intercooler, a plastic cold air area (not really a box) and a lot of dirt and grime. I go offroad almost every day and never clean the car. My setup is not pretty. Most people that look under the hood wonder how it runs at all.

AWW seeing you responded got my excited i was going to see some cool update pics
railz is offline   Reply With Quote
Old 06-16-2009, 06:02 AM   #58
Newb
 
Join Date: May 2009
Location: Currently in Bielsko-Biala Poland
Posts: 12
Total Cats: 0
Default

Sorry for the off topic post but my count isn't high enough for a PM.

DVCN, what autox class do you run your miata in with the new turbo setup?
Dangasaur is offline   Reply With Quote
Old 06-16-2009, 08:33 AM   #59
Junior Member
Thread Starter
iTrader: (7)
 
Join Date: Jun 2005
Location: Texas
Posts: 376
Total Cats: 16
Default

Quote:
Originally Posted by Dangasaur View Post
Sorry for the off topic post but my count isn't high enough for a PM.

DVCN, what autox class do you run your miata in with the new turbo setup?
New turbo setup?

SSM (used to be SM2). Due to some minor non performance enhancing details, the car should technically be in XP. No sun visors, trunk gutted, etc.
dvcn is offline   Reply With Quote
Old 06-16-2009, 09:01 AM   #60
Newb
 
Join Date: May 2009
Location: Currently in Bielsko-Biala Poland
Posts: 12
Total Cats: 0
Default

Quote:
Originally Posted by dvcn View Post
New turbo setup?
Sorry, I just assumed you ran the miata before you dropped in a DIY turbo.
Dangasaur 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 59 12-15-2017 09:00 PM
LucaCarMods's Boosted Dutch Miata Build! LucaCarMods Build Threads 11 02-14-2016 07:13 AM
My solution for Oiltemp and Oilpressure input into Megasuirt (MS3) Zaphod MEGAsquirt 41 01-24-2016 01:25 PM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM
In need of base map for stock 1997 brandonbkd MEGAsquirt 0 09-29-2015 12:52 AM


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 06:36 PM.