seized zc....i disected today....my findings

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Old Aug 2, 2003 | 09:16 AM
  #1  
VTgringo's Avatar
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Default seized zc....i disected today....my findings

i disected my built zc today and found that one of the crank thrust bearings had worn some pretty bad marks on to the crank and the block. It looked pretty ugly. anyway...i guess i could have the engine machined back to spec but its probably not worth the money. the good news is that my crower/JE combo looks great (the only thing i really car about).

The thrust bearings (there were two halfs) were located on either side of cyl #3. my question is should i have installed both halfs on one side or should it look like it did, one half on one side and one half on the other. If anything this has been a learning experience.
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Old Aug 2, 2003 | 09:57 AM
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Default Re: seized zc....i disected today....my findings (VTgringo)

come on i know there are a few grease monkeys out there that think this type of stuff is cool.......not everyone on hear pays people to do there own work....sorry im just venting due to the lack of interest of a disected engine on a tech forum
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Old Aug 2, 2003 | 11:28 AM
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Default Re: seized zc....i disected today....my findings (VTgringo)

ttt for a fellow hokie. btw, what does your ef look like? just wondering if i've seen it around bburg
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Old Aug 2, 2003 | 11:53 AM
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Default Re: seized zc....i disected today....my findings (bl@sterVT)

What type of bearings were they? Did you use engine assembly lude between the crank and the bearing surface? Also, there's a certain way to install them. One side of them has grooves that you need to face outward.
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Old Aug 2, 2003 | 10:20 PM
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Default Re: seized zc....i disected today....my findings (sporkcrx)

hey, i have a red crx si with ugly altezzas. I'm looking for a crew up at tech.....I really don't know any other honda guys.

they were the stock thrust bearings. I didn't use any assembly lube and probably faced the bearing the wrong way.......thanks for the hints, hopefully i'll build a better engine next time
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Old Aug 2, 2003 | 10:25 PM
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Default Re: seized zc....i disected today....my findings (VTgringo)

No problem man, don't forget your helms! (you do have one, don't you?)
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Old Aug 3, 2003 | 12:28 AM
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Default Re: seized zc....i disected today....my findings (sporkcrx)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sporkcrx &raquo;</TD></TR><TR><TD CLASS="quote">What type of bearings were they? Did you use engine assembly lude between the crank and the bearing surface? Also, there's a certain way to install them. One side of them has grooves that you need to face outward.</TD></TR></TABLE>


well he hit the nail on the head, yes the bearings go on BOTH sides, use lube so when you start it the first time the motor can crank and run smoothly untill the oil has a chance to get there lol, well looks like i was to late to give you any good info since spork beat me to it (good lookin out) but i try lol. better luck next time, at least it wasnt a to terribly expensive motor. but you always learn from your mistakes(i know i have lol).
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Old Aug 3, 2003 | 07:54 AM
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Default Re: seized zc....i disected today....my findings (4inspeed)

"I'm looking for a crew up at tech"

I got this ill crew called the j3ts

problem is weez always battlin the Rockets in musical knife fights

Imma go back to bein wit dem Krips DOOD!
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Old Aug 3, 2003 | 08:19 AM
  #9  
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Default Re: seized zc....i disected today....my findings (4inspeed)

well i ran the motor for about a year N/A before i installed the turbo.....all it took was a few 10 psi runs to seize it up. the next motor i build i will fully blueprint......oh and yes, i used a helms manual. I had no prevous experience building a motor, just a book. its like being asked to preform surgery on someone and the doctor saying, "here's the medical book, chapter 5, open hart surgery's" .....hehe, but thanks guys......im thinking this motor was more or less doomed from the start
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Old Aug 3, 2003 | 12:26 PM
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Default Re: seized zc....i disected today....my findings (VTgringo)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTgringo &raquo;</TD></TR><TR><TD CLASS="quote">...before i installed the turbo.....all it took was a few 10 psi runs to seize it up. the next motor i build i will fully blueprint......oh and yes, i used a helms manual. I had no prevous experience building a motor...</TD></TR></TABLE>

This is why the engine seized up on you. I would honestly never run 10 psi on a stock bottom end. Unless I had another motor waiting to be installed, then I guess KICK-*** job!
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Old Aug 3, 2003 | 01:36 PM
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Default Re: seized zc....i disected today....my findings (mntuner2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTgringo &raquo;</TD></TR><TR><TD CLASS="quote">
the good news is that my crower/JE combo looks great</TD></TR></TABLE>

not stock
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Old Aug 3, 2003 | 07:04 PM
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Default Re: seized zc....i disected today....my findings (mntuner2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by mntuner2 &raquo;</TD></TR><TR><TD CLASS="quote">

This is why the engine seized up on you. I would honestly never run 10 psi on a stock bottom end. Unless I had another motor waiting to be installed, then I guess KICK-*** job!</TD></TR></TABLE>

yeah, i had my crower steel billet rods and my forged JE 9:1 pistons. i just think this engine had a vendeta aginst me from day one
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Old Aug 3, 2003 | 07:49 PM
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Default Re: seized zc....i disected today....my findings (VTgringo)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by VTgringo &raquo;</TD></TR><TR><TD CLASS="quote">

yeah, i had my crower steel billet rods and my forged JE 9:1 pistons. i just think this engine had a vendeta aginst me from day one</TD></TR></TABLE>

dude im beginning to feel the same way........... right now my zc is running better than ever but i have this strange feeling something is gonna happen.......... good luck with the next build!
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Old Aug 3, 2003 | 08:06 PM
  #14  
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Default Re: seized zc....i disected today....my findings (sloorex)

thanks sloorex.........the fully built mini-me is going in this weekend...i throw a post up with pictures before it breaks.....haha
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Old Aug 4, 2003 | 05:35 AM
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Default Re: seized zc....i disected today....my findings (VTgringo)

did you supply enough fuel for your 10psi...
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Old Aug 4, 2003 | 07:21 AM
  #16  
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Default Re: seized zc....i disected today....my findings (kyle h.)

yeah, with the dsm 450's at stock pressure with a stock pump i think i was only running them at 60-70% duty cycle from my calculations but who knows. i don't think that was the cause of the crank thrust bearing. but anything is possible. any more suggestions
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Old Aug 4, 2003 | 09:17 AM
  #17  
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Default Re: seized zc....i disected today....my findings (mntuner2)

i've been running 10 psi on my stock 94 si motor for quite some time now. no problems at all. gotta love ghettodyne.
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