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2004-2007 Cadillac CTS-V Performance Mods Discussion, Back up on blocks for winter work in Cadillac CTS-V Series Forum - 2004 - 2007; Got it "done" and started it up. Voltage at idle on the dic is 14.6. Car sounded like crap until ...
  1. #61
    heavymetals's Avatar
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    Re: Back up on blocks for winter work

    Got it "done" and started it up.

    Voltage at idle on the dic is 14.6.

    Car sounded like crap until the lifters pumped up.

    Here is what it looks like with the redundant alternator wiring to the battery.

    There is enough thread on the bolt to accommodate the terminal so I lucked out on that.

  2. #62
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    Re: Back up on blocks for winter work

    Getting close to the "finish" line with this part of the project (this car is a project).

    Had to order o2 extensions for the rear o2's as the new cats are further back.

    The car does pass sniff test and the #'s are in the mud. WHOO HOO!

    The unexpected plus was that they tucked the cats up higher so they don't hit the speed bumps.

  3. #63
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    Re: Back up on blocks for winter work

    I'm surprised you didn't cut/solder extension wires on the existing O2 sensors. I did that on mine and used used Raychem heatshrink on the splices and wrapped it with high temp flex loom.

    Not familiar with your battery and can't clearly see how your wires are connected in the pics. When you say there was enough thread on the terminal, where are you connecting it? I say this because they make battery terminals that accommodate additional ring terminals such as the one from Racetronix - GMBT-B

    GMBT.jpg

  4. #64
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    Re: Back up on blocks for winter work

    Quote Originally Posted by philistine View Post
    I'm surprised you didn't cut/solder extension wires on the existing O2 sensors. I did that on mine and used used Raychem heatshrink on the splices and wrapped it with high temp flex loom.

    Not familiar with your battery and can't clearly see how your wires are connected in the pics. When you say there was enough thread on the terminal, where are you connecting it? I say this because they make battery terminals that accommodate additional ring terminals such as the one from Racetronix - GMBT-B
    I would rather buy extensions then fart around extending existing wiring.

    As for the terminals, the ones you show (actually any) would push the battery terminal out to far for my liking.

    The battery side terminals stick out over an inch as they are also posts.

    I already killed the battery a few times sitting in the car zoning out on a few dozen tunes or a movie, so I may opt for a bigger battery.

  5. #65
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    Re: Back up on blocks for winter work

    Update:

    Rear O2 extensions are in, but need to be secured.

    Changed the oil & filter while I was underneath the car.

    I guess I will take it off the blocks this week.

    Had success running the OEM radio/nav through the 5.1 system.

    Waiting for parts to finish that.

    Next project on this will probably be fuel system related, delivery and pressure monitoring.

  6. #66
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    Re: Back up on blocks for winter work

    UPDATE:

    Grabbed the audio feed to the BOSE amplifier and found they are differential.

    Breadboarded a chip and it converts the differential signal to single ended and it sounds GREAT.

    The big problem is now volume control as the OEM radio controls volume via class II to the Bose amp.

    What a funky way to do things.

  7. #67
    ctsv247 is offline Cadillac Owners Enthusiast
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    Re: Back up on blocks for winter work

    Good info on the smaller alternator pulley. Any idea what size it is?

    Nice car!

  8. #68
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    Re: Back up on blocks for winter work

    Quote Originally Posted by ctsv247 View Post
    Good info on the smaller alternator pulley. Any idea what size it is?

    Nice car!
    Thanks!

    I like it, the V is a hoot.

    After a long conversation with MECHMAN, the smaller pulley really helps in traffic.

    I found a Gatorback that was smaller with no problem, so the belt wasn't an issue, but also wasn't cheap.

    I think the pulley is about 3/8" - 1/2" smaller OD.

  9. #69
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    Re: Back up on blocks for winter work

    Quote Originally Posted by heavymetals View Post
    Got it "done" and started it up.

    Voltage at idle on the dic is 14.6.

    Car sounded like crap until the lifters pumped up.

    Here is what it looks like with the redundant alternator wiring to the battery.

    There is enough thread on the bolt to accommodate the terminal so I lucked out on that.
    I think I have a bad ground. My voltage has been really swinging lately. A week ago I had 14.2 at idle, then I had 13.1. While driving it's usually 13.5. I just dealt with a bad battery and replaced it with a fresh one. I didn't pay much mind to it until another member mentioned their problems. I wanted to check the health on my fuel pump wiring and they were hot to the touch - this is all recent.

    So I just emptied a shopping cart full of items on this thread. So what voltage do you get at cold idle, hot idle, and cruising?

  10. #70
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    Re: Back up on blocks for winter work

    At idle the voltage doesn't drop below 13.1.

    At cruise, the voltage doesn't go above 14.5.

    This depends on wether the lights and A/C are on.

    The replacement alternator seems to kick ass.

  11. #71
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    Re: Back up on blocks for winter work

    Quote Originally Posted by heavymetals View Post
    At idle the voltage doesn't drop below 13.1.

    At cruise, the voltage doesn't go above 14.5.

    This depends on wether the lights and A/C are on.

    The replacement alternator seems to kick ass.
    I seen the tags spec on the alternator. Can you be specific where you bought it and if it's OEM, aftermarket etc - benefits. Also, any installation tricks or does it drop in place? Just gathering my supplies and dotting the I's and crossing the T's. Thanks!

  12. #72
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    Re: Back up on blocks for winter work

    Quote Originally Posted by philistine View Post
    I seen the tags spec on the alternator. Can you be specific where you bought it and if it's OEM, aftermarket etc - benefits. Also, any installation tricks or does it drop in place? Just gathering my supplies and dotting the I's and crossing the T's. Thanks!
    I got it from here: http://fastlanepartssupply.com/shop/...mp-alternator/

  13. #73
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    Re: Back up on blocks for winter work

    Quote Originally Posted by heavymetals View Post
    Hmm, they could have chrome plated it for that price! I did a little digging around but couldn't find any direct info on the stock alternator being insufficient. I'm going to do the big 3 - besides this alternator being vastly superior than stock, what did you notice afterwards? I got some power hungry fuel pumps leaching off a limited supply of amperes.

    My dynamic voltage tests show no dips chassis ground at the engine strut, rear chassis, battery, and motor. It goes high 14.2 at cold idle then dips to 12.9 with a/c headlights, and dual fuel pumps running - at hot idle. The alternator cannot seem to get my battery voltage past 13 volts with all the stuff running hot idle.

  14. #74
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    Re: Back up on blocks for winter work

    Gold plating for that price buddy.

    I run a lot of electrical loads, haven't noticed any errant shut offs except when I space out and run the battery down from sitting and listening (motor off).

    The computer power supply as a low voltage shutdown.

    If you replace the alternator, you will discover you only want to do it once.

  15. #75
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    Re: Back up on blocks for winter work

    I purchased the welding wire...dear lord, it's HUGE! Also, with your electronics experience, could you shed some light on ATO blade fuses vs. circuit breakers. Specifically for use with fuel systems. I tested with 10AWG wire, 30amp fuse/30amp breaker and found the resistance to be much lower with the circuit breakers.

    This was for my fuel system using DW300 pumps - draws 13amp @13.5 volts. I cut my fuses and replaced with circuit breakers with my hotwire(s) setup and my wires at the fuel module have significantly lower temps and lower resistance. The blade fuses were too hot to the touch and I had them 8 inches from the battery wiring.

    I got some direction from Squash Performance with regards to using circuit breakers - also noticed many high end fuel systems using circuit breakers.

    Thanks!

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