Thread: Top Swap Info and Faqs, Also lots of 3800 Info

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  1. #281 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
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    Tune wont fix the pulley too small for mods.

    Unless that PCM OSID works with your model year and trim and the PCM was setup for your transmission settings it wont run properly.
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  2. #282 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    SE Level Member MONTE2000SS's Avatar
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    ITS OFFICAL i got all my my parts except the harmonic balancer can some one please tellme if i really need this or not.....also got the fuel injector plugs with the fuel rail and map sensor and maf sensor,coil pack with bracket heads now too ...and the connectors to if i need them dont know for sure........please please helpme i want this stuff on my car....cant wait imso happy !!!!more power than on to the L67 mod list
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  3. #283 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    GTX Level Member 02BlueGT's Avatar
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    Quote Originally Posted by MONTE2000SS View Post
    ITS OFFICAL i got all my my parts except the harmonic balancer can some one please tellme if i really need this or not.....also got the fuel injector plugs with the fuel rail and map sensor and maf sensor,coil pack with bracket heads now too ...and the connectors to if i need them dont know for sure........please please helpme i want this stuff on my car....cant wait imso happy !!!!more power than on to the L67 mod list
    You should really read the first post in this thread, I made sure all those answers are in there....... the balancer is required if you want the belt that spins the supercharger. The only way to avoid the balancer swap is to use a ss m90 pulley from ZZP, but there is such a small amount of belt wrap with that setup, you will get belt slip with a 3.8 pulley.
    2002 GT...CAI, Headers, Special Eddition two-tone leather interior added, HUD added, 12" Brake Upgrade, ZZP strut tower bars, gmpp sway bars, poly motor mounts, -6an braided SS fuel hoses , Hptuned, Headers, Top Swaped, 50lb inj, E85, 3.4
    I've got Boost!! Top swap Quesions? Click Here
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  4. #284 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
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    So I haven't seen this question answered- The return line is on the opposite side of the engine on the l36. I haven't seen a good option on connecting it to the l67 rail. I'm VERY leery of a custom line due to all the W body engine fires (we had one on our stock regal). So how did you guys do it?
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  5. #285 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    DUI BABY Bio248's Avatar
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    twist the head on the line and itll pop right onto the L67 stuff like normal. make sure the lines arent rubbing on anything, mainly the EGR that'll burn right through them.
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  6. #286 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
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    Alright, I was just breathing alittle uneasy with the stories I've read of l36 top end swaps burning down because of that line. I won't be running an egr so I guess I'm safe.
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  7. #287 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
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    Does anyone know if I can put a L67 top on a L26 bottom....
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  8. #288 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    DUI BABY Bio248's Avatar
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    yes, you can.

    you're gonna need to do something about the DBW throttle body though.
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  9. #289 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    I live here. MoarkatsINmuhtrailer's Avatar
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    whered my reply go in this?? i already said yes....didnt think of the dbw at the time though
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  10. #290 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
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    Will a harmonic balancer from a 1997 to 2003 supercharged engine fit a 2007
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  11. #291 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    DUI BABY Bio248's Avatar
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    yes, but be aware that at that age the rubber on the inside may have broken down.
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  12. #292 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
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    I'm going to top swap soon on my 2000 GP GT with an XP cam. I've done a lot of reading about it and im aware that its easier to blow my engine due to the higher compression. I know too much knock will do it in, so is there anything else I need to look out for to safely run the top swap?
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  13. #293 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    DUI BABY Bio248's Avatar
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    run a big pulley to start out with and make sure you've got someone who tunes close by.
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  14. #294 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    GT Level Member Steven Monteith's Avatar
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    Quote Originally Posted by Bio248 View Post
    run a big pulley to start out with and make sure you've got someone who tunes close by.

    I will be getting an Overkill PCM, and I know many people still suggest to get a custom tune. Even though I will have a scan guage for knock and be sure I don't have any knock, What else makes it so dangerous? A detailed explanation would be highly appreciated.
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  15. #295  
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    Thin ring landing more likely to fail. Any kr is bad. It means damage is being done to the piston. Takes while for the landing to fail though.
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  16. #296 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
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    Quote Originally Posted by matt5112 View Post
    Thin ring landing more likely to fail. Any kr is bad. It means damage is being done to the piston. Takes while for the landing to fail though.

    What causes the landing to fail?? Also, what is the ring landing?
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  17. #297  
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    The pistons rings are gapped very tightly. When higher cylinder temps are seen they expand and can sieze ripping the top half of the piston off. I would think the rings would fail first.

    However based on what ive read about detonation, it slowly weakens the piston till it finally fails.

    There is a typical place for it to occur. Iirc its furthest away from the spark plug.
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  18. #298 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    DUI BABY Bio248's Avatar
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    the ring landing is where the piston ring clips onto the piston. when you get the motor pinging nicely the piston rings swell up and the piston ring gap closes up and ends up lopping a corner of the piston off.

    it takes some effort to do it, but oh so many people have done it.



    edit: damn you, mr. speedy!
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  19. #299  
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    Race of the phone typing.

    Im starting to doubt the ring gap theory.

    Lookup "formulas" for calculating ring gap. They suggest our factory gap is just fine.
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  20. #300 Re: Top Swap Info and Faqs, Also lots of 3800 Info 
    DUI BABY Bio248's Avatar
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    but how much heat are we creating in the cylinders when you've got some serious detonation going on? enough to expand the rings without expanding the piston and seizing it in the cylinder?
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