My crapp DIY junk build - Page 3 - 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 01-11-2010, 12:41 AM   #41
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Quote:
Originally Posted by rweatherford View Post
Do you have a boost gauge? Perhaps you are getting waste gate flutter or surge on the compressor. That's a pretty big compressor on a small engine and you are running a lower pressure ratio on the compressor side with what I would consider a large turbine AR on a 1.6L.

Just an idea from a newb. Experts can chime in and tell me how it is. ;^)
Yes I do have a boost gauge, and it sits pretty solid at 9psi.

I would say you may have a point with the turbo sizing theory, however it does it n/a too, and not just WOT with the turbo.

I'm thinking it has to be a ground/power wire issue. I haven't really had much time to mess with it lately.
greenday3437 is offline   Reply With Quote
Old 01-11-2010, 09:57 AM   #42
Junior Member
 
Join Date: Dec 2009
Location: Shelbina, MO (North East)
Posts: 335
Total Cats: 0
Default

Yea if it does it NA then check for interference, etc.
rweatherford is offline   Reply With Quote
Old 01-18-2010, 03:35 AM   #43
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Just an update, installed the MBC and meth injection today, however for now I'm only running 0 degree windshield washer fluid, which is roughly 25% meth because I haven't ordered any yet.

Tomorrow I'll be turning up the boost to about 15 psi and using MLV live to start dialing in the fuel map.

I switched my vacuum routing around some, so hopefully that helps the crazy map readings, I also ordered a inline power conditioner but it's not in yet.

Soon I'll be building det cans and adding in some timing after I get fueling squared away.

I'll be sure to post spool logs at 15psi or so
greenday3437 is offline   Reply With Quote
Old 01-18-2010, 12:54 PM   #44
Senior Member
iTrader: (8)
 
Join Date: Feb 2009
Location: Jax, Fl
Posts: 907
Total Cats: 0
Default

You have the same mani and turbo I have. I'm getting a tubular one before the motor goes back in though. I'm interested to see how the motor holds up to 15psi on this turbo. I was thinking 15 but will most likely run 12 to be safe. Good luck
johnmatt is offline   Reply With Quote
Old 01-18-2010, 01:38 PM   #45
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Quote:
Originally Posted by johnmatt View Post
You have the same mani and turbo I have. I'm getting a tubular one before the motor goes back in though. I'm interested to see how the motor holds up to 15psi on this turbo. I was thinking 15 but will most likely run 12 to be safe. Good luck
I read your thread, after I got my setup done and running I was all of a sudden struck with the urge to do an absurdflow-style manifold for my setup, but then decided to hold off on it and just enjoy it how it is for now.

As for the 15psi, I'm thinking with the forged rods and meth injection I should be okay, however I'll step it up slowly to get there. As long as my tune is good and I have enough fueling I'm pretty sure I should be good.
greenday3437 is offline   Reply With Quote
Old 01-18-2010, 02:40 PM   #46
Senior Member
iTrader: (8)
 
Join Date: Feb 2009
Location: Jax, Fl
Posts: 907
Total Cats: 0
Default

Oh ok I must have missed the part about the forged rods. I'm doing a stock rebuild myself so 12psi is about as far as I want to go safely. Yeah that cast mani is alright but I'm hoping going to a better one will improve spool time alot more than what it is now
johnmatt is offline   Reply With Quote
Old 01-18-2010, 02:42 PM   #47
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

Did you do forged rods and stock pistons?

I'm thinking about rebuilding the same, but want to see someone in the 250-300whp with an intact motor before I go saving myself $400 just to spend another $1500.

EDIT: Glad you've got the WI going. I've been running nothing but "super blue" for months now and love it. Look at your local Big Lots for the -20* Power Blaster stuff, which is nearly 40% meth. It did tweak the AFRs a bit. So I tuned fuel map without WI, but a little on the lean side (12.0:1), and then just put in the relay and haven't touched fuel since.
gospeed81 is offline   Reply With Quote
Old 01-18-2010, 04:13 PM   #48
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Quote:
Originally Posted by johnmatt View Post
Oh ok I must have missed the part about the forged rods. I'm doing a stock rebuild myself so 12psi is about as far as I want to go safely. Yeah that cast mani is alright but I'm hoping going to a better one will improve spool time alot more than what it is now
The cast mani is nice for the money, but beyond that it's not too great.

Just curious, what rpm are you reaching your boost targets? (and what are they?)
greenday3437 is offline   Reply With Quote
Old 01-18-2010, 04:15 PM   #49
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Quote:
Originally Posted by gospeed81 View Post
Did you do forged rods and stock pistons?

I'm thinking about rebuilding the same, but want to see someone in the 250-300whp with an intact motor before I go saving myself $400 just to spend another $1500.

EDIT: Glad you've got the WI going. I've been running nothing but "super blue" for months now and love it. Look at your local Big Lots for the -20* Power Blaster stuff, which is nearly 40% meth. It did tweak the AFRs a bit. So I tuned fuel map without WI, but a little on the lean side (12.0:1), and then just put in the relay and haven't touched fuel since.
Yes I went forged rods and stock pistons, I was on a super budget at the time so I was hoping that setup along with WI would be kind to my pistons, I guess time will tell.

Thanks about the tip for the Big Lots brand, I'll try there, so far I've tried ORielly's (sp) and Wal Mart and all they have is the 0 degree kind, it could be my location though.

I'm on my way outside to take it for a drive, I'll be back soon with logs of terror
greenday3437 is offline   Reply With Quote
Old 01-18-2010, 05:25 PM   #50
Senior Member
iTrader: (8)
 
Join Date: Feb 2009
Location: Jax, Fl
Posts: 907
Total Cats: 0
Default

Yeah for a cheap starter mani it's awesome but I'm alittle wiser now so it's time to upgrade. I was running off the wastegate which was supposed to 8psi but my boost gauge took a dump so I don't know exactly what it was making or if it was creeping any. But about 4k is when she started to open up
johnmatt is offline   Reply With Quote
Old 01-18-2010, 05:34 PM   #51
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Quote:
Originally Posted by johnmatt View Post
Yeah for a cheap starter mani it's awesome but I'm alittle wiser now so it's time to upgrade. I was running off the wastegate which was supposed to 8psi but my boost gauge took a dump so I don't know exactly what it was making or if it was creeping any. But about 4k is when she started to open up
Yeah I agree, I think next winter I'll be making a new manifold.

I just got back from driving it, and had multiple fails.

Fail #1. I redid my wastegate sourcing, making it come from the intake piping right before the TB, I also added a MBC. I think the routing is too far away or something, because I couldnt get it to stop overshooting past 17psi even though I back the MBC out almost all the way.

Fail #2. I need to tune my WI better, It's kicking on way too soon and I think the pump pressure is way too high. Last night I was adjusting it, using my HF compression tester gauge, which should work right?

Anyways, the way it was sent to me, the pressure jumped up to like 170psi. I turned it down to 90ish psi, but it pulsed really bad, and I thought that would be bad, so I turned it back up so that it wouldnt pulse too much.

Should I turn it down to 90 or so (which is what I should be running for my nozzle size) and just ignore the pulsing? Or does my compression tester gauge not read fluid correctly? (stupid question probably)

On to Fail #3. After the last pull I did trying to adjust the MBC, the violent jolt from the spark overboost cut sent my water pump/ alt belt flying off into the great unknown. I luckily was close to home and limped it home. I really hope I didnt blow the head gasket.

Does anyone have any suggestions for the WI? If my gauge was reading correctly, then I think I should turn it down to 90-100 psi and adjust my onset point for the WI to 6-7 psi. Thanks
greenday3437 is offline   Reply With Quote
Old 01-18-2010, 05:40 PM   #52
Senior Member
iTrader: (8)
 
Join Date: Feb 2009
Location: Jax, Fl
Posts: 907
Total Cats: 0
Default

Well I'm of no help for your problems but that's crazy you threw the belt. Hopefully everything is still fine
johnmatt is offline   Reply With Quote
Old 01-18-2010, 05:41 PM   #53
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Quote:
Originally Posted by johnmatt View Post
Well I'm of no help for your problems but that's crazy you threw the belt. Hopefully everything is still fine
Yeah I know, it's all my fault too. I was working around it when I was installing the WI, and notice the belt was in the pulleys flipped around if you can immagine that. What is normally the outside of the belt was the inside.

I took it off and turned it around, but it still wanted to twist back. I really should have just bought a new one, oh well.
greenday3437 is offline   Reply With Quote
Old 01-18-2010, 05:49 PM   #54
meatbag
iTrader: (50)
 
gospeed81's Avatar
 
Join Date: Nov 2008
Location: Houston, TX
Posts: 7,357
Total Cats: 26
Default

Everything I've read on the diaphragm pumps and WI nozzles said you want to be at a minimum 150psi pressure.

As far as it coming on...you want to adjust your pressure switch. I had a nice Nason adjustable from DevilsOwn that was DOA. I used a Hobbs 4psi NO...which I took the rubber cap off of and adjust up to 8-9psi.
gospeed81 is offline   Reply With Quote
Old 01-18-2010, 05:56 PM   #55
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

There was one great plus to today's drive though, I guess moving my MAP point for the MS was the ticket, it's not perfect still, but it's way better:

Before:

Name:  log4.jpg
Views: 0
Size:  88.3 KB

After, note the boost overshoot, and the 15.5psi at 4700 rpm, not fast by any means, but it's a big turbo on a small motor:

Name:  log3.jpg
Views: 0
Size:  79.7 KB
greenday3437 is offline   Reply With Quote
Old 01-18-2010, 05:59 PM   #56
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Quote:
Originally Posted by gospeed81 View Post
Everything I've read on the diaphragm pumps and WI nozzles said you want to be at a minimum 150psi pressure.

As far as it coming on...you want to adjust your pressure switch. I had a nice Nason adjustable from DevilsOwn that was DOA. I used a Hobbs 4psi NO...which I took the rubber cap off of and adjust up to 8-9psi.
I adjusted mine, but it's hard to do with the crappy little air compressor I was using. I had it adjusted to about 6psi, but then I accidently adjusted it the wrong way without realizing it and haven't gotten to fix it yet.

I dont mind running a higher pump pressure, it flows better and everything, it's just I'm running a far to large nozzle for 150psi I think. (5gph nozzle)

Thanks everyone for all the suggestions
greenday3437 is offline   Reply With Quote
Old 01-18-2010, 06:12 PM   #57
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Oh yeah, one more good thing to note, MLV live is awesomezz. Way better than log, MLV, ve analy, burn, log, MLV, ve analy, burn, log, and so on and so on.

I also was running a different timing map today, which was much smoother, it's one that Joe Perez posted a while ago, a hybrid of the DIY base map and Y8's map. Worked pretty well for what short time I got to drive it.
greenday3437 is offline   Reply With Quote
Old 01-19-2010, 04:28 AM   #58
Senior Member
 
Join Date: Mar 2006
Location: Schwarzenberg, Germany
Posts: 1,497
Total Cats: 81
Default

Could you show us this timing map please?
Zaphod is offline   Reply With Quote
Old 01-19-2010, 11:16 AM   #59
Senior Member
iTrader: (8)
 
Join Date: Feb 2009
Location: Jax, Fl
Posts: 907
Total Cats: 0
Default

So I'm guessing you got yourself a timing belt eh? So everything is still fine then?
johnmatt is offline   Reply With Quote
Old 01-19-2010, 02:06 PM   #60
Senior Member
Thread Starter
iTrader: (2)
 
Join Date: Aug 2005
Location: Granbury, TX
Posts: 567
Total Cats: 1
Default

Quote:
Originally Posted by johnmatt View Post
So I'm guessing you got yourself a timing belt eh? So everything is still fine then?
It was actually the alt/water pump belt, thankfully not the timing belt. And although I had a dream last night that I went back out and found it on the road, put it on, and used it to run from the cops, none of that is reality. So in otherwords, I'm getting one tonight haha.

Those logs were from the driving I got to do before it came off.
greenday3437 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
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
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Bad head gasket or ? shooterschmidty Engine Performance 8 09-30-2015 11:28 PM
In need of base map for stock 1997 brandonbkd MEGAsquirt 0 09-29-2015 12:52 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 02:57 AM.