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Topic: turbo upgrade problems...new nightmare :( (Read 7196 times) previous topic - next topic

turbo upgrade problems...new nightmare :(

Reply #45
Did this turbo work alright for a while? How did you initially set your wastegate?

If you pop the wastegate off, you can open and close the door by hand, but its hard as hell to reach
It's Gumby's fault.

turbo upgrade problems...new nightmare :(

Reply #46
I set the wastegate to where it wasnt easily opened and then I tightened it down a bit more.      I am thinking that when it was running rich it built up carbon on the door and isnt letting it close all the way.    I think I'll take the elbow off when I get a chance and see what things look like.

turbo upgrade problems...new nightmare :(

Reply #47
I think it would take a loooong time for enough carbon to build up on the wastegate flapper to keep it from closing properly.

Garrett H.
'94 F250 XLT- 4x4, 5 speed, 7.3 IDI Turbo Diesel, 4" intake, 4" exhaust, 5" turnout stacks, manual hubs, etc.
'87 Thunderbird Turbo Coupe
Engine, wheels, tires, etc!
Exhaust sound clip
Another clip

turbo upgrade problems...new nightmare :(

Reply #48
Quote from: Red_LX
I think it would take a loooong time for enough carbon to build up on the wastegate flapper to keep it from closing properly.


lol it was fouling a set of plugs a week with carbon.

turbo upgrade problems...new nightmare :(

Reply #49
Have you droped the down pipe and ran it just to check to see if it some form of exhust blockage. I had a full new exhust even a new cat. After the previous engine threw a cam followers and the head was cracked I finally got a differnt motor in there. It wouldn't make Boost but would run fine until upper RPM's. I checked and checked and checked. Finally took it to a shop at first they couldn't find anything wrong with it. Then the took out the 02 senesor and noticed alot of exhust comeing out. So they put a pressure gauge on it and I had 18psi back presssure.  Ok so I took it the the local exhust shop and they put on a new one and let me look thur the old NEW one and you could only see thur 2 holes when I lifted it up and pointed thwards the sun.  If had it smoking bad at any time that could plug it up. Also I use regular grade 8 nuts withlock washers on the turbo nuts. I also put antisieze on there just to make it eazy to take apart later.  I also last week replaced my turbo-mani gasket. Before hand it sounded like a weed wacker and top boost was 8-9psi. Then afterwards it sound like a turbo car again and 17psi max with no adjustment to the boost controller.
84 Turbo coupe 2.3T Modded with 88 upper and lower intake, 88 injectors, E6 manifold, T3-4 AR.60 turbo, 31X12X3 FMIC, Homemade MBC , Greddy knock off BPV.
4 eyes see better than 2! 
Da Bird!

FreeBird

turbo upgrade problems...new nightmare :(

Reply #50
I took apart the elbow today and I found that the wastegate actuator wasnt holding it closed all the way so I went ahead and took everything apart to make sure I didnt have any other problems but didnt find any so I put it back together.  now it tries to make boost but bucks and kicks at about 5psi  its got me baffled again.  I'll see what I can find out.

turbo upgrade problems...new nightmare :(

Reply #51
cam timing is fine and the rotor and cap are good...  the only thing that I can think of to check are the plugs and maybe the dist timing.  I could really use some help :(

turbo upgrade problems...new nightmare :(

Reply #52
I bought this boost controller and it came with this little piece and I am unsure of what its for.


turbo upgrade problems...new nightmare :(

Reply #54
I have checked fuel pressure but I never got a chance to do it under a load.  after changing the fuel pump (walbro 255lph) the other day, I reved the engine and it held a steady boost of 10psi in nuetral wich confused me.  I am starting to think that there is something blocking my exhaust flow possibly in my lers.  I am running flowmaster 40 series.  could this be the cause of my problem?

turbo upgrade problems...new nightmare :(

Reply #55
What held steady at 10 psi? If it was fuel pressure you have a serious problem.

Clogged exhaust will limit boost, not help it go to 10 psi in neutral?

Which are we talking about here?

What kind of boost controller is that?

See this article for the proper, step by  step way to run fuel system diagnostics:
http://www.turbotbird.com/techinfo/Fuel_System/fuel_system_diagnostics.htm

turbo upgrade problems...new nightmare :(

Reply #56
Quote from: 88turbo
I reved the engine and it held a steady boost of 10psi in nuetral wich confused me.



the boost controller is one from ebay.  here is the listing.  http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1,1&item=150031736157&ih=005&sspagename=STRK%3AMEWN%3AIT

turbo upgrade problems...new nightmare :(

Reply #57
You could get an A-pillar dual gauge pod and use one of those openings for a fuel pressure gauge.
2005 Subaru WRX STi|daily driver

turbo upgrade problems...new nightmare :(

Reply #58
Quote from: turbopete;107209

Clogged exhaust will limit boost, not help it go to 10 psi in neutral?

Actually Pete, as odd as it sounds, a clogged cat will make it boost in neutral.
It's Gumby's fault.

turbo upgrade problems...new nightmare :(

Reply #59
Quote from: Tbird232ci;107298
Actually Pete, as odd as it sounds, a clogged cat will make it boost in neutral.


can someone suggest a cheap ler that will be better for my setup and still sound awesome?  I need to get these ed flowmasters off. :(

heres what I'm thinking  http://cgi.ebay.com/ebaymotors/2-5-O-O-6-Round-14-Body-MagnaFlow-ler-SS-12636_W0QQcmdZViewItemQQcategoryZ33636QQihZ003QQitemZ130033419286QQrdZ1QQsspagenameZWD1V