Need help with z6 build

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Old Jul 18, 2011 | 04:19 PM
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Default Need help with z6 build

started this junkyard project awhile ago.... specs: z6 block new bearing, vitra pistons, new rings, new belts, new starter and alt, 450(eclipse) inj, inline resistors, walbro fuel pump....and this is what it looks like




and this is what it sounds like

now im stuck dont know what else to do!! HELP!!! lol
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Old Jul 18, 2011 | 04:36 PM
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Default Re: Need help with z6 build

hello
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Old Jul 18, 2011 | 04:49 PM
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Default Re: Need help with z6 build

What are you running it with for ECU?
Spark, compression, fuel checks all done?
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Old Jul 18, 2011 | 07:32 PM
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Default Re: Need help with z6 build

p28 ecu ... got spark and got fuel, how to check compression
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Old Jul 19, 2011 | 06:18 AM
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Default Re: Need help with z6 build

I assume the P28 is chipped?
Can you put the stock chip and injectors in and start the car (do not rev of boost... just idle)?

Originally Posted by sasinorm01
....how to check compression
With an engine compression tester.
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Old Jul 19, 2011 | 12:04 PM
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Default Re: Need help with z6 build

the ecu is not chipped..... and it doesnt start it....it won't turnover...
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Old Jul 19, 2011 | 12:25 PM
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Default Re: Need help with z6 build

Video sounds like it turns over (cranks) but doesn't fire.

But anyway - you need a chipped ECU or some form of management.
Your stock ECU isn't going to know what to do with those injectors or boost.

Does it smell like fuel after a while when you have tried starting it?
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Old Jul 19, 2011 | 12:58 PM
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Default Re: Need help with z6 build

you need a chip forsure . and maybe try taking the charge pipe off and spray a little starting fluid in it so you can tell if its fuel or spark . i had a simaler probem with my car and i have almost the same setup. mine was a bad ground wire for the computer
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Old Jul 19, 2011 | 01:35 PM
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Default Re: Need help with z6 build

^^ pulling the charge pipe off would be a good idea to see if your wiring and all is correct before boosting.
You would probably also need to change out injectors to get it to start on the stock ECU..
If you have access to OBD0 injectors then you can leave the inline resistors in place.
Alternatively, you can use the Z6 injectors and remove the inline resistors to test.
It should at least idle like that.
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Old Jul 19, 2011 | 06:03 PM
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Default Re: Need help with z6 build

ok i guess ill go back to the junkyard and get some obd0 injectors and buy some starting fluid.. thanks........hmm and Yes i do smell fuel after i try and start it ..

Last edited by sasinorm01; Jul 19, 2011 at 06:26 PM.
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Old Jul 21, 2011 | 05:39 PM
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Default Re: Need help with z6 build

bump
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Old Jul 23, 2011 | 09:28 PM
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Default Re: Need help with z6 build

well if your smelling fuel and your sure its getting fuel . and your sure your getting spark there is no reason it shouldent start . enless you have compression issues or maybe the timing is off on the belt . i would just spray starter fluid in her and see if it starts or fires at all . as long as you have spark and compression the motor should run on starter fluid . if it dose fire then your problem is fuel related . if it dosent fire at all the make sure you have a good spark .then go from there . good luck let me know
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Old Jul 23, 2011 | 09:31 PM
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Default Re: Need help with z6 build

also do you have fuel pressure on that regulator if so how many psi is it making ?
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Old Jul 25, 2011 | 07:00 AM
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Default Re: Need help with z6 build

^^ and ^^ - he's running a stock P28 ECU. :slapinthebackofthehead:

This stock ECU is expecting 240cc injectors, but the engine has 450cc injectors installed.
That is almost twice as much fuel getting dumped each time an injector fires.
Impossible stewpud rich.
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Old Jul 25, 2011 | 06:43 PM
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Default Re: Need help with z6 build

your cylinders are getting flooded by fuel. I would make it N/A until you get crome or some kind of mangement for your turbo kit or your just going to brake your motor.
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Old Aug 3, 2011 | 05:14 PM
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Default Re: Need help with z6 build

hmm ok so i will swap out the 450 inj to the original 240 and see what happens......................
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Old Aug 13, 2011 | 06:21 PM
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Default Re: Need help with z6 build

well put in the orginal inj and the same problem ........then i reallized i wasnt getting any spark (DUH!!!!!!) ....changed the coil , still no spark!! (DAMN IT) ....then changed the ignitor ....and whola!!! engine turn over !!! thanks to........

4drEF
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