Author Topic: I think I made my pistons ''too efficient''. Logs inside....  (Read 8583 times)

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Offline earlbrown

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Re: I think I made my pistons ''too efficient''. Logs inside....
« Reply #30 on: August 22 2016, 10:44:49 AM »
Yeah, I guess I am being hard headed.   If I want a car with a chevy v8 I'll buy a chevy.

My Buick GN has a Buick engine in it, and that Buick engine is what I'm working with. I've got over 10 years tied up on tying to turn this hunk of yard art back into a car, I'm not even going to consider doing a powertrain swap.


It sure would have been nice to pull the timing down across the board (and hopefully see the knock disappear).  With a distributor it would have taken me about 2 seconds to run that test. And learn if that that fixed it.

As of now, I'm waiting on a TT chip that (hopefully) will let me pull timing.  I can't do a damn thing until I run that test.  If it fixes it, then I know my engine build needs less advance than the average build.   If it doesn't fix it, I had to go through a bunch of unnecessary bullshit to run a simple test and then dig deeper.
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline earlbrown

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Re: I think I made my pistons ''too efficient''. Logs inside....
« Reply #31 on: August 22 2016, 10:48:56 AM »
$130 for the package (w eraser) on Amazon:
https://www.amazon.com/dp/B00OD7O9G2/

Oh, hell no!   The last think I need is to teach myself another hobby!   For years, I've purposely avoided learning how to build transmissions, and decode/modify ECM codes.

It was bad enough when I got my 454 jetboat and had to go backwards to learn big chebbys and Holley carb circuits.  lol
'87 GN - 4.2L SFI Turbocharged innercooled V6 - Chrome valve covers - supra pump - 14" K&N - 52mm throttlebody - rocker shaft supports -  1/2 intake spacer - TB coolant bypass - 3" ATR exhaust tip - Alum intake pipe - NOS timing cover - chip - relocated charcoal canister - CR42's - stock

Offline Scoobum

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Re: I think I made my pistons ''too efficient''. Logs inside....
« Reply #32 on: August 22 2016, 11:10:31 AM »
Earl...if you have a spare ECM...swap it...and see what your timing is at idle with your laptop hooked up. Your first file reads 25...and that chip is 19/17. Yeah I know, I'm looking for a simple fix.
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Offline motorhead

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Re: I think I made my pistons ''too efficient''. Logs inside....
« Reply #33 on: August 22 2016, 11:22:08 AM »
I am going to order some Torco octane booster for Drag Week... want to talk about band-aids for poor planning? Because this is it.  Another $130 US down the tubes.
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