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200 amp altenator

Discussion in '1973-1991 K5 Blazer | Truck | Suburban' started by ftn96, Dec 19, 2001.

  1. ftn96

    ftn96 1/2 ton status

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    I've looked at altenatorparts.com and powermaster's and found 2 200 amp altenators that supposedly bolt right up to my year model. Are they any down falls to running a 200 amp alty?

    Still hoping the GOV'T will ban the use of loud stereos with RAP music. [​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     
  2. ricka

    ricka Registered Member

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    Expensive is the major shortcoming. But as you increase amperage, you generally
    develop more heat and thus reliability might be an issue.

    -------
    Rick Anderson (rick.d.anderson@tektronix.com)
    Tektronix, Inc. Beaverton, OR 503-627-2630
     
  3. ftn96

    ftn96 1/2 ton status

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    Makes since. I have seen others on here advertising that they run lights, winch, stereo and the regular stuff on 140 ampers.
    Is this common? If so the 140 amp one is about 100 bones cheaper

    Still hoping the GOV'T will ban the use of loud stereos with RAP music. [​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     
  4. 502Burban

    502Burban 1/2 ton status

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    Be careful about the "bolt right in" claim. I have one of the Powermaster 200 amp alts, which they claimed would "bolt right in" to my bracket setup from a '94. It was close, but not quite. However, the mods were easy: all I had to do was drill one of the mounting holes to a bigger size and egg-shape it a little to get it to fit.

    The other fitment issue is that the 200 amp alt is deeper, so it comes very close to my valve cover. I can't even slip a finger between them, but it does clear.

    There are pics under the engine section of my webshots site (at the link below my sig) if you want to take a look.

    Robb
    <a target="_blank" href=http://community.webshots.com/user/robbrj>'73 GMC Suburban - 502DFI</a>
     
  5. CaptCrunch

    CaptCrunch 1/2 ton status

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    Yup the bolt right in claim is kinda tough, My 180 amp alternator needed an adapter for the harness and then I had to fab up the bracket a little. One word of warning if you have a serp style pulley you will have to swap pulleys as the 140 comes with a V belt pulley. This left my truck a bit lower at idle then the original setup, but by the time youget up to 800 rpm's she was charging like mad!

    -Mikey
    1987 Chevy K5 Blazer- 350 TBI
    <a target="_blank" href=http://coloradok5.com/gallery/captcrunch>http://coloradok5.com/gallery/captcrunch</a>
     
  6. ftn96

    ftn96 1/2 ton status

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    I think the one I found at altenatorparts.com has the serp pulley. And as far as capatability it says its for 86-90 something or another. K-series included.

    Still hoping the GOV'T will ban the use of loud stereos with RAP music. [​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     
  7. Skigirl

    Skigirl 1/2 ton status

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    Add up the amps for what you would potentially be using all at once, then get an alternator that has 25% more amperage than that. That was the sage advice given to me by Gandolf (as I recall). I think there's a good reason for that. You don't want your alternator to overcharge your battery, so bigger is not always better. You just need enough alternator to get the job done.
     
  8. Boss

    Boss 1/2 ton status Author

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    Yep, I ran into the same problems with my "bolt in" 200 amp alt, like 502 said. I did the exact same things he did as well to fix it. Had to tie my radiator hose and move it away a little too, to get it from getting sliced up by the alternator pulley. I love the 200 amp though...recharges my batts sooo fast!! (very noticable when winching)
    Boss

    Pic of my truck Before N' After
    <a target="_blank" href=http://coloradok5.com/gallery/BeforeNAfter>http://coloradok5.com/gallery/BeforeNAfter</a>
     
  9. ftn96

    ftn96 1/2 ton status

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    Well, here is the deal. I called altenatorparts.com and got the delco CS144 Dual Rectifier 170 amp setup. Comes with the serp pulley. And they offer a rebuild kit that can be performed even by an idiot on the side of the road or trail with basic tools.
    The Damage was $300. The sad thing is, that I wont be using all that power for at least another year due to all the other stuff Im rebuilding. So I shouldn't have to worry about it having any problems charging my battery. [​IMG]

    Still hoping the GOV'T will ban the use of loud stereos with RAP music. [​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     
  10. CrazeeBush

    CrazeeBush 1/2 ton status

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    So, now you got enough power to juice 20 15" subs with a 1000 watt amp for each. When the power goes out, just plug your truck into the house and start 'er up. lol

    -BuSH
    '83 K5 Blazer
    '98 Monte Carlo z34
     
  11. ftn96

    ftn96 1/2 ton status

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    lmfao!!! Yeah that or when the I run outta plugs for all the Christmas light! (that I dont have). I've seen few around the hood that look like they may need a permit to be pulling all that power. Or 10 extra generators!!! [​IMG]
    And we be only putting in 2 subs and a we little amp.
    And no off-road lights other than a Spot light. So most of this iwll be for the winch and what ever the motor needs. So I should have plenty of "head-room".

    Still hoping the GOV'T will ban the use of loud stereos with RAP music. [​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     
  12. rampage

    rampage 1/2 ton status

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    <blockquote><font class="small">In reply to:</font><hr>

    You don't want your alternator to overcharge your battery, so bigger is not always better.

    <hr></blockquote>

    I didn't think it was possible to overcharge your battery unless your alternator was bad.
     
  13. ftn96

    ftn96 1/2 ton status

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    As long as the voltage regulator is good I dont see how you can over charge it.

    Still hoping the GOV'T will ban the use of loud stereos with RAP music. [​IMG]
    <a target="_blank" href=http://www.nashvillek5.freeservers.com>www.nashvillek5.freeservers.com</a>
     

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