anyone ever turbo an XLR
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Cadillac XLR Forum Discussion, anyone ever turbo an XLR in Past Cadillac Vehicle Discussion; This fleabay add ends in 5 mins. but might still be up... http://www.ebay.com/itm/GT45-TURBOCH...sories&vxp=mtr I am sure it is NOT American ...
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    RADARB8's Avatar
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    anyone ever turbo an XLR

    This fleabay add ends in 5 mins. but might still be up...
    http://www.ebay.com/itm/GT45-TURBOCH...sories&vxp=mtr

    I am sure it is NOT American made, but has anyone ever done a tubo in an XLR.. I am thinking about buying an XLR if the price was right...and would love to have xtra hp..
    I own a 2006 CTSV and i have put 21grand into a rear turbo 76mm..700hp but the XLR is a much nicer looking car....

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    GizmoQ's Avatar
    GizmoQ is offline The Last Good Gremlin
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    Re: anyone ever turbo an XLR

    Quote Originally Posted by RADARB8 View Post
    This fleabay add ends in 5 mins. but might still be up...
    http://www.ebay.com/itm/GT45-TURBOCH...sories&vxp=mtr

    I am sure it is NOT American made, but has anyone ever done a tubo in an XLR.. I am thinking about buying an XLR if the price was right...and would love to have xtra hp..
    I own a 2006 CTSV and i have put 21grand into a rear turbo 76mm..700hp but the XLR is a much nicer looking car....
    An interesting idea. I've seen one with electric superchargers, but never a turbo. And I know of one of the guys in the STS-V forum who replaced his supercharger with a turbo.

    I'm working on a centrifugal supercharger for my 4.6L NorthStar in my Eldo (6lbs max boost). From what I've been able to gather, anything more than that and you need to strengthen the internals and stud the heads.
    Snake Bit Super Chilled Black Raven 2006 Cadillac XLR-V aka Elwood (Jake's brother)
    Verified 501rwhp and 486TQ at 6000RPM so far...final goal 575/550

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    RADARB8's Avatar
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    Re: anyone ever turbo an XLR

    What brand is the supercharger??? and is it basically a bolt in and tune or are u a do it yourselfer....

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    GizmoQ's Avatar
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    Re: anyone ever turbo an XLR

    It's a TRD off a Scion TC. And everything has to be custom to fit it. Unfortunately, there's no such thing as a tune on a 96 Northstar. I gotta guy that's willing to experiment on it.
    Snake Bit Super Chilled Black Raven 2006 Cadillac XLR-V aka Elwood (Jake's brother)
    Verified 501rwhp and 486TQ at 6000RPM so far...final goal 575/550

    ELWOOD - "Corvette in a Tuxedo ... with a Jet Pack"



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    Re: anyone ever turbo an XLR

    thanks guys, looks like if i get an XLR..I shall keep it stock..

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    GizmoQ's Avatar
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    Re: anyone ever turbo an XLR

    Quote Originally Posted by RADARB8 View Post
    thanks guys, looks like if i get an XLR..I shall keep it stock..
    Good choice. But express your originality with wheels and tires. If you must - add a V rear sway bar, an intake, exhaust and a tune which is not far from stock; cheap by comparison and will make a difference.
    Snake Bit Super Chilled Black Raven 2006 Cadillac XLR-V aka Elwood (Jake's brother)
    Verified 501rwhp and 486TQ at 6000RPM so far...final goal 575/550

    ELWOOD - "Corvette in a Tuxedo ... with a Jet Pack"



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    Re: anyone ever turbo an XLR

    I can can help you out if you want to do this. I would start with a 2007 or newer XLR to make it easy. I can do it on a 2004 +, but it will cost more.

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    Re: anyone ever turbo an XLR

    why is it easier on the 2007????

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    Re: anyone ever turbo an XLR

    The N* is basically the same for all base XLRs, no matter the year. Why would you charge more to turbocharge an '04? Have you turbocharged any XLRs yet?

    There's probably been more smoke blown on engine mods for this car than the rest of the Cadillac lineup combined, and usually by people with little or no experience with the XLR, which is a totally different animal when it comes to reliable modifications. Letting someone experiment on your XLR to see if something can be done is asking for trouble. . . Unless you have two XLRs.

    D3 and Lingenfelter are the only companies I've seen routinely modify existing XLR engines, and it isn't cheap if you want a big HP increase. The stock compression ratio of the N* doesn't lend itself well to turbocharging, or GM would have done it already. When they wanted to reliably and efficiently increase the HP, they went with a supercharger. Nuff said.

    Save your money and buy a V if it's horsepower you crave. Then modify it from there. --There aren't even PCM tuning chips for the base XLR commercially being offered.

    CC

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    Re: anyone ever turbo an XLR

    i think there's something about the data bus that's different in 2007+ vehicles that makes them easier to 'hack'
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    alarmu12 is offline Cadillac Owners Member
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    Re: anyone ever turbo an XLR

    If you value your 96 Eldorado and it is working fine leave it alone. The head bolts are too short and pull out, which causes the head gaskets to leak water. You can helicoil them once, but not twice. It is a $8000 to $12000 job to replace the engine and the car is not worth that much. I had to sell a mint condition triple black 96 eldo to the junk yard for a $1000 after the second engine failed.

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    Re: anyone ever turbo an XLR

    never never never ever ever helicoil a northstar

    insert or stud -- it's the only way
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    Re: anyone ever turbo an XLR

    Quote Originally Posted by RippyPartsDept View Post
    never never never ever ever helicoil a northstar

    insert or stud -- it's the only way
    Never stud an older Northstar. That would just cause the studs to come out of the block. The factory bolts strech as the engine goes through the heat cycle. The studs are too hard and on the older blocks they pull free

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    Re: anyone ever turbo an XLR

    Quote Originally Posted by RADARB8 View Post
    why is it easier on the 2007????
    We can tune 2004 to 2006 XLR's but it isn't worth it for us to do one. 2007 use a different ECM that we can tune with standard tuning software.

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    Re: anyone ever turbo an XLR

    Quote Originally Posted by pcmcalibrators View Post
    Never stud an older Northstar. That would just cause the studs to come out of the block. The factory bolts strech as the engine goes through the heat cycle. The studs are too hard and on the older blocks they pull free
    There are inummerable threads by pros who specialize in repairing this type of all-too-common problem in the N* Engine section of this board that would disagree with you. You may revise your opinion after reading them.

    CC

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