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Thread: Hydraulic or Solid Lifters for Sunbelt Cams?

  1. #1
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    #94 IP, '68 250SE '17 M3

    Hydraulic or Solid Lifters for Sunbelt Cams?

    I am looking to purchase a Sunbelt Cam kit along with the M50 race valvespring kit from Bimmerworld. My lifters need to be replaced as well, and I was wondering if hydraulic lifters would be okay/safe for that setup? VAC makes some solid lifters, but I would prefer to use stock-style lifters to avoid valve adjustments, etc.

    Thanks in advance for the input.
    '94 325is #94 IP/GTS3 Mauritius Blue Metallic
    "And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high." - Ayrton Senna

  2. #2
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    i'd stay hydraulic.

    solid lifters would be for more rev's, but a stock bottom end doesn't last much past 7200 rpm.

    I wouldn't even do the springs, unless you are just dying to upgrade.
    Sean

  3. #3
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    Quote Originally Posted by SG_M3 View Post
    i'd stay hydraulic.

    solid lifters would be for more rev's, but a stock bottom end doesn't last much past 7200 rpm.

    I wouldn't even do the springs, unless you are just dying to upgrade.
    No, I really didn't want to drop an extra $1100 just for the spring kit. I just want to make sure that my motor will be solid and happy. The less money I have to spend, the better. The cams and software is already $2000, and I've only got for $1700 in parts to sell. Time to start selling furniture.
    '94 325is #94 IP/GTS3 Mauritius Blue Metallic
    "And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high." - Ayrton Senna

  4. #4
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    2000 for cams and software? If it was me I'd save that toward a supercharger fund
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  5. #5
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    Solid lifters need to be dialed in and checked pretty regularly. IMO, stay hydraulic as long as you can.
    '95 Supra Turbo
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  6. #6
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    Quote Originally Posted by Kaiv View Post
    2000 for cams and software? If it was me I'd save that toward a supercharger fund
    I really want a Eurosport kit, but those are on hold as of late. I figure that I can always add a s/c after the cams.

    Quote Originally Posted by bluemoon2222 View Post
    Solid lifters need to be dialed in and checked pretty regularly. IMO, stay hydraulic as long as you can.
    Yeah, I'm not familiar with the solid lifter conversion, and really didn't wanna have to swap them.
    '94 325is #94 IP/GTS3 Mauritius Blue Metallic
    "And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high." - Ayrton Senna

  7. #7
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    You shouldn't have a problem with hydraulic lifters. Although my springs are upgraded I'm running hydraulic lifters and rev to 7800 without a problem.

    I've also seen a few posts from people who had a lot of problems with the sunbelt cams.

    You should just save for the turbo.


  8. #8
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    Quote Originally Posted by ParadigmGuy View Post
    You shouldn't have a problem with hydraulic lifters. Although my springs are upgraded I'm running hydraulic lifters and rev to 7800 without a problem.

    I've also seen a few posts from people who had a lot of problems with the sunbelt cams.

    You should just save for the turbo.
    I heard that they corrected the problem, quite awhile ago actually. I've also heard of many club race cars running the sunbelts with excellent results.
    '94 325is #94 IP/GTS3 Mauritius Blue Metallic
    "And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high." - Ayrton Senna

  9. #9
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    Quote Originally Posted by 94is View Post
    I heard that they corrected the problem, quite awhile ago actually. I've also heard of many club race cars running the sunbelts with excellent results.
    OK, cool.


  10. #10
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    Quote Originally Posted by 94is View Post
    Time to start selling furniture.


    what made you decide on the sunbelts vs. the schricks?
    ESS 625
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  11. #11
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    Quote Originally Posted by Patrón View Post


    what made you decide on the sunbelts vs. the schricks?
    I don't want a gain of just 10-15rwhp. My car already makes 230rwhp, and I'd be pissed if it only made 240 after the cams. I just want something a *little* more aggressive.
    '94 325is #94 IP/GTS3 Mauritius Blue Metallic
    "And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high." - Ayrton Senna

  12. #12
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    What problem with the sunbelt cams are you talking about?

  13. #13
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    Quote Originally Posted by 94is View Post
    I don't want a gain of just 10-15rwhp. My car already makes 230rwhp, and I'd be pissed if it only made 240 after the cams. I just want something a *little* more aggressive.
    Is Tim throwing $$$ at his car in hopes that he can keep up with you?










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  14. #14
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    Quote Originally Posted by Quailane View Post
    What problem with the sunbelt cams are you talking about?
    I think that there was some problem with timing, and since the cams have a larger lobe, that they can easily hit valves if timing isn't 100% accurate. Btw, this might be incorrect, but I *think* this is what I remember hearing.
    '94 325is #94 IP/GTS3 Mauritius Blue Metallic
    "And so you touch this limit, something happens and you suddenly can go a little bit further. With your mind power, your determination, your instinct, and the experience as well, you can fly very high." - Ayrton Senna

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