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thorley header

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Offline Eden1

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thorley header
« on: November 07, 2007, 05:27:34 PM »
can anyone here tell me why my new header is brown on only 2 of the pipes.and the other 2 are that blue colour??????????????
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Offline sidekicksrock

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Re: thorley header
« Reply #1 on: November 07, 2007, 05:55:44 PM »
Leaking exhaust valves?
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Student of Now Master of Then
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Offline JoeCool

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Re: thorley header
« Reply #2 on: November 07, 2007, 06:32:00 PM »
compression test stat! If your pipes are oxidizing at significantly different rates then the temperature is also differing, likely a misfire. Hows it running?
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5psi turbo '90 2dr 5spd 8v Tracker, Lt235s, 1" spacers, Rocker Rails, Warn Hubs, Custom half door,--GONE!
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Offline Eden1

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Re: thorley header
« Reply #3 on: November 08, 2007, 05:42:36 AM »
it runs pretty good.but now that you mention misfire when its at idle it does seem to run rough.if i do a compression test what should it be reading?

thanks guys
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Offline sidekicksrock

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Re: thorley header
« Reply #4 on: November 08, 2007, 06:37:25 AM »
Normal compression on an 1.6 8V is 170 to 190
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Offline urbanwheeler

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Re: thorley header
« Reply #5 on: November 08, 2007, 10:40:09 PM »
My JDM replacement motor had 130 psi in all 4 cylinders. I think the JDM motors have a lower compression ratio that the US ones.
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Runnin' it stock with 225/75R15s and an unmodified 8valve TBI motor (I need a doug thoroley header and a cam) (more power) (1.6 liters of madness) (vroom + sewing machine sounds)
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Offline Eden1

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Re: thorley header
« Reply #6 on: November 09, 2007, 05:41:37 AM »
so i got to ask???whats a jdm motor ???
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Offline Praise Him

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Re: thorley header
« Reply #7 on: November 09, 2007, 03:47:53 PM »
japan domestic motors.

Some of dougs headers come anadized that color is normal
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sammy/toy axles/locked/geared/cased/36's
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Offline Eden1

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Re: thorley header
« Reply #8 on: November 10, 2007, 12:52:46 PM »
well i changed my cap and rotor and wires today.and badda boom a new truck again.lol.the rotor was worn down and corroded.so im saying thats what the deal was.

thanks again guys
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