Turbo Problems...
Hey everyone! I just put a DIY turbo kit in my 97 Miata. I went with the Voodoo box (I know its crap but I got a good deal) and 305cc supra injectors. Im running a T25 Garret turbo with a custom stainless manifold and downpipe. After putting everything on and turning the car on it sounded great. Everything appeared to work but when I put any load on the car the boost gauge wouldn't move into positive pressure. I hooked the boost gauge to the intake manifold and put a T fitting and split it and ran the other end to the Voodoo Box. I thought it would be a boost leak so I checked my piping and everything was nice and snug. I was wondering if anyone else had a similar problem and figured it out.
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yes
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Get a boost leak checker. Just because your hoses are tight doesn't mean you don't have a leak.
You either have a boost leak, a leak at the boost gauge (still a boost leak), or a junk turbo. Do you know the condition of the turbo? How's the condition of the engine otherwise? Any issues or maintenance done recently? |
WG isn't closing or you have a boost leak. I'm assuming you've taken the most cursory of diagnostic steps (i.e. "does turbo spin") before posting a thread here.
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I had the turbo looked at by a professional and he said it was good to go. I also rebuilt the engine in the Miata so it has all new internals. Where would I get a boost leak checker?
Originally Posted by acedeuce802
(Post 1336146)
Get a boost leak checker. Just because your hoses are tight doesn't mean you don't have a leak.
You either have a boost leak, a leak at the boost gauge (still a boost leak), or a junk turbo. Do you know the condition of the turbo? How's the condition of the engine otherwise? Any issues or maintenance done recently? |
I check the WG and yes the turbo does spin lol.
Originally Posted by Savington
(Post 1336147)
WG isn't closing or you have a boost leak. I'm assuming you've taken the most cursory of diagnostic steps (i.e. "does turbo spin") before posting a thread here.
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https://www.google.com/#q=boost+leak+checker. I'm a wizard, I know.
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Originally Posted by CalebMars
(Post 1336150)
https://www.google.com/#q=boost+leak+checker. I'm a wizard, I know.
I got mine here: Boost leak checker |
Homedepot high HP turbo accessories:
Oatey 2 in. Gripper Mechanical Plastic Test Plug-33401 - The Home Depot |
do you hear the turbo spooling when you floor it? do you feel any power gains in the car?
or it simply doesnt boost and no added power and turbo noises? |
honestly I haven't floored it because I figured out the BOV I bought wasn't working so I took that off and have stopped until I get one. but I did bring it up to around 2000 rpm and didn't really hear anything. I made sure to let the throttle down slowly so that no damage was done to the turbo after I didn't hear the BOV. Once I get I new BOV i'll update the thread and let you guys know whats up. Thank you all so much for your help!
Originally Posted by borka
(Post 1336372)
do you hear the turbo spooling when you floor it? do you feel any power gains in the car?
or it simply doesnt boost and no added power and turbo noises? |
Wait, you only took it to 2 k ? Well that's probably your problem.
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Originally Posted by noahthepilot
(Post 1336373)
honestly I haven't floored it because I figured out the BOV I bought wasn't working so I took that off and have stopped until I get one. but I did bring it up to around 2000 rpm and didn't really hear anything. I made sure to let the throttle down slowly so that no damage was done to the turbo after I didn't hear the BOV. Once I get I new BOV i'll update the thread and let you guys know whats up. Thank you all so much for your help!
Be a man, floor it. (As long as tune is decent). Not saying take it to red line, but floor it from 3 to 4k rpm and you will see if you are making boost. Your bov might be fine, you will never hear it feathering throttle at 2k. Stop granny shifting and start double clutching lol |
Double clutching? What the hell are you driving, an 18 speed Kenworth?
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Originally Posted by ryansmoneypit
(Post 1336387)
Double clutching? What the hell are you driving, an 18 speed Kenworth?
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Hahah, I should have known.!
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Originally Posted by noahthepilot
(Post 1336373)
honestly I haven't floored it because I figured out the BOV I bought wasn't working so I took that off and have stopped until I get one. but I did bring it up to around 2000 rpm and didn't really hear anything. I made sure to let the throttle down slowly so that no damage was done to the turbo after I didn't hear the BOV. Once I get I new BOV i'll update the thread and let you guys know whats up. Thank you all so much for your help!
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Were you actually driving when you brought it up to 2k or just sitting reving in the driveway? You aint gonna build boost with no load...
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Originally Posted by 4gordeev
(Post 1336891)
You aint gonna build boost with no load...
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Originally Posted by Wingman703
(Post 1337093)
What does load have to do with anything? The engine is still putting out exhaust gasses and spinning the turbines, load or no load.
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