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weak bank dead bank ruined new pistons

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Old 09-14-2012, 09:44 AM
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Originally Posted by gouldy
Sounds like this thing is a nightmare.
There is obviously a problem with spark but I just can't understand how bad spark could destroy a new engine so fast and do so much damage.

With scores in the bores, bad compression, damaged bearings and foreign material in the sump I would be checking for mechanical or build and machining issues issues first and then address the electrical issues.

What oil are you using?
What assembly lube did you use?
How did you prime the oil pump?
What were the piston to bore clearances and crank and rod bearing clearances?
What were the ring gaps?
How was the block cleaned and what cleaning fluids were used?
Foreign material in oil! Is it possible that someone may be sabotaging your build?

These may be worth looking at if you haven't already done so.
I still think its mechanical problem and maybe the gap less rings are the problem,
There has to be a problem with clearances or machining to destroy an engine so quickly.
Did you double check all of the clearances before assembly??
Old 09-14-2012, 01:38 PM
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It was drivable just after the first build with the big comp cam. I got 5 miles and started loosing power so bad I just barely made it back home. What the hell could cause that
Dealer called, they have no idea what's wrong with it. I gotta drag it back home
Old 09-16-2012, 06:00 PM
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THE CATS WERE CLOGGED

The dealer had no idea what was wrong so I picked it up...no charge at least

I dropped the cats and bam. It was instantly fixed. SOAB
All that time and money... The fix was free and only took 2 hours.

I'm pretty sure my turbo is ruined. Will see...
Old 09-16-2012, 06:10 PM
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You have CATS? I had no idea! Pound them things out and get rid of them, that car will pass smog on E85, if you have smog testing.
Old 09-16-2012, 06:49 PM
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WTF!!!!

Man I've been following this thread and hoping you'd find the problem and be happy again lol! That's my kinda shitty luck, I tell you with me when it's raining puzzys I get hit with *****!

Congrats on the fix and I hope nothing else is ruined bud.
Old 09-16-2012, 08:53 PM
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No fking way. After all that and it was clogged cats... Unbelievable. What's the plan now?
Old 09-18-2012, 01:42 AM
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Old t-70 going back in tue. If it dumps oil I'll get a turbonetics t-78. May just do that anyway
Old 09-23-2012, 10:41 PM
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I went through three sets of heads and two shortblocks before I found the cause of my problems was a weak connection for the coolant temp sensor.
Old 09-24-2012, 06:01 PM
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Default Turbo dead

I'm burning a lot of oil. Just bought a 76mm On3 turbo for $350. Cheapo
Old 09-24-2012, 06:13 PM
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Hey bud, hang in there, try to do it right man. I know how u feel it took my 2 years to get my motor setup in sig. Just to get the good stuff and not cut corners you know the old saying "Do it once and do it right, or you'll be paying twice" lol.
Then I ordered a driveshaft from spohn and check off stock length ds with 1350 u joints cause I have a 9". They send it to me and I put it on after confirming the length with them because I had sold my stock shaft and I couldn't compare them. I trailer it to Straightline and the ds ended up being too damn short and it took out my tailshaft of the T56 luckily on the dyno! Trust me I know. Now I blew money to upgrade it to Viper output shafts and carbon fiber synchros and all that crap. I've been driving around having fun and now my dr's are done and no money lol.
Old 09-24-2012, 06:48 PM
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Originally Posted by ericwilloughby
Hpt can't do crank pos relearn.
Want to bet?
Attached Thumbnails weak bank dead bank ruined new pistons-hpt.jpg  
Old 09-26-2012, 12:33 AM
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Your right about looking to high tech...see post 43
Old 09-26-2012, 12:36 AM
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Originally Posted by DietCoke
Want to bet?
I'm almost certain I don't have the boost, cam, or special tabs on my e40 pcm. Will check
Old 09-26-2012, 07:00 AM
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Originally Posted by ericwilloughby
I'm almost certain I don't have the boost, cam, or special tabs on my e40 pcm. Will check
I'm 10,000% certain you do. It's in VCM scanner, not VCM editor.
Old 09-26-2012, 11:31 AM
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Why don't I have the cam or boost tab? I do have the CASE LEARN. I had no idea what that meant. Thanks.
I must need to update...

Attached Thumbnails weak bank dead bank ruined new pistons-vcm-scanner-shot.jpg  
Old 09-26-2012, 12:07 PM
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I never thought it could a clogged cats
Old 09-26-2012, 04:40 PM
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[QUOTE=ericwilloughby;16758382]Why don't I have the cam or boost tab? I do have the CASE LEARN. I had no idea what that meant. Thanks.
I must need to update...

I have an E38 pcm, which drives factory VVT and Boosted cars. The E40 does not, so you won't have those tabs, but you will have a case learn (CASE = Crank Angle SEnsor) and cylinder balancer. Good luck

Old 09-26-2012, 06:40 PM
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I think its time you changed the cost thats in your sig.
Old 09-26-2012, 07:43 PM
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The cost of a turbo kit never includes blown engines, transmissions.
Actually, I just put an on3 76mm on today. The cost to do a kit has just gone down $350

Last edited by ericwilloughby; 09-28-2012 at 05:08 AM.
Old 09-29-2012, 01:27 PM
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Quick question. Do you think the cats being clogged caused all this problem or do you think another problem dumped a bunch of unburnt fuel into the cat killing it?


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