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DIY Turbo Discussion greddy on a 1.8? homebrew kit?

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Old 11-05-2010, 12:00 AM   #1
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After searching to no ends, (google and here) I am finally giving up and ill just ask you guys. I've recently done all maintenance that a 120 k mile, stock miata would need, and threw on a turbo setup (home-brew), with an O2 clamp purchased here. After getting all of that together, the car will not start. Im 100% certain the cam timing is on, but unsure about the ignition timing (tried playing around with it, with no luck). Everything rolls over smoothly when the cam position sensor is unplugged, but it kinda struggles when I plug it back in.

Any help is greatly appreciated, im not planning on driving this thing after it starts, i just want to make sure its working before i continue, thanks.

-Marc
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Old 11-05-2010, 12:01 AM   #2
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What other bandaids do you have... what turbo setup...Check spark and fuel
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Old 11-05-2010, 12:28 AM   #3
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pulled sparks and checked them, and there's plenty of fuel.
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Old 11-05-2010, 12:30 AM   #4
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Its a turbo set up i put together myself, mitsubishi gsx turbo, with piping put together from alco metal in vallejo.
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Old 11-05-2010, 01:46 AM   #5
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Coils plugs swapped? Any popping/sounds when you try and start it?
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Old 11-05-2010, 02:10 AM   #6
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negative sir, but there was a big *** backfire once when adjusting the cam positioning thing on the back of the valve cover. sounds like im getting close then failing. I did however follow the haynes book when putting it all back together, so it should all be fine.
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Old 11-05-2010, 02:23 AM   #7
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So no spark at all in all 4?
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Old 11-05-2010, 02:25 AM   #8
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no i get spark just fine, thats why im so confused right now.
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Old 11-05-2010, 02:48 AM   #9
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So you have spark, you have fuel, then the issue is Timing related
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Old 11-05-2010, 02:52 AM   #10
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would you suggest i keep playing with that positioning sensor on the passenger side of the block?
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Old 11-05-2010, 02:54 AM   #11
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Did you verify your timing belt is on correctly and not off a tooth or so?
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Old 11-05-2010, 03:05 AM   #12
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yeah, from the bottom to top. That's also why i suspect the positioner.
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Old 11-05-2010, 11:03 AM   #13
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Did you get the cam gears in the right orientation where the I and E line up with their markings on the bottom middle of the backing plate? The right orientation looks backwards to someone that hasn't done it before.
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Old 11-05-2010, 12:38 PM   #14
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^Im pretty sure I didn't, I followed the haynes book all the way through, and matched up all pictures, and i even went back to double check yesterday.
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Old 11-05-2010, 12:45 PM   #15
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Is it possible to engage the CAS 180 degrees off? I've never used one or looked at the end of the cam that closely.
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Old 11-05-2010, 12:49 PM   #16
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It only goes in 1 way,

OP what exactly did you do to the car maintenance wise? Did it run before you did that?
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Old 11-05-2010, 12:50 PM   #17
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theres a notch on one side at the end that only allows it to go in one way.
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Old 11-05-2010, 12:58 PM   #18
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Quote:
Originally Posted by SKMetalworks View Post
It only goes in 1 way,

OP what exactly did you do to the car maintenance wise? Did it run before you did that?

i did the head gasket, valve seals, end seals, valve cover gasket, belts, and new fluids. To add, yes it ran before, it had a pretty bad head gasket, and i got it checked out to make sure it wasn't warped.
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Old 11-05-2010, 04:45 PM   #19
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Gonna play with the ignition timing some more, feel free to toss over suggestions, ill do anything to start her today.
-marc
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Old 11-05-2010, 11:43 PM   #20
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you sound like me and my 99. timing belt is perfect, got spark, got fuel, turns over fine but just wont fire. after cranking like a min 1 coil gets hot to touch. does not matter if i switch em out. so i will be looking in to wiring when i get some time
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