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Need help: Boost falling off

 
Old 04-20-2019, 12:08 PM
  #21  
Corvette4ever
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Originally Posted by BooSSted View Post
Messaged BTR on proper push rod lengths, i just think the issue would have showed up before
Don't think BTR's answer is going to be accurate. IMO, this questions should go to the guy who installed your cylinder heads. He should have measured the correct pushrod length to achieve the correct lifter pre-load

Every combo is different. I was recommended by the vendor to use stock length pushrods (7.85"), but I ended up with 7.8" pushrods
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Old 04-20-2019, 01:30 PM
  #22  
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Originally Posted by Corvette4ever View Post
Don't think BTR's answer is going to be accurate. IMO, this questions should go to the guy who installed your cylinder heads. He should have measured the correct pushrod length to achieve the correct lifter pre-load

Every combo is different. I was recommended by the vendor to use stock length pushrods (7.85"), but I ended up with 7.8" pushrods
What's measured to test the correct lifter pre-load? That's interesting because most of these shops when you order a cam kit etc they typically order and have everything in for the install. I doubt this is done correctly often.
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Old 04-20-2019, 02:06 PM
  #23  
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Where are you referencing boost?
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Old 04-20-2019, 03:58 PM
  #24  
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Originally Posted by douglee25 View Post
Where are you referencing boost?
On manifold line which lowside and meth are referenced from.
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Old 04-20-2019, 04:28 PM
  #25  
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Originally Posted by BooSSted View Post
On manifold line which lowside and meth are referenced from.
Have you ran a dedicated boost line direct to the manifold?
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Old 04-20-2019, 06:00 PM
  #26  
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Originally Posted by douglee25 View Post
Have you ran a dedicated boost line direct to the manifold?
No additional boost lines were ran, using the stock gauge and line ran for hobbs switch and meth.
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Old 04-21-2019, 04:37 PM
  #27  
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Are these big red race BOV's adjustable at all to anyone's knowledge?
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Old 04-21-2019, 05:40 PM
  #28  
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Originally Posted by BooSSted View Post
Are these big red race BOV's adjustable at all to anyone's knowledge?
yes you can adjust how wide they open the valve (if you talking about the older version)
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Old 04-21-2019, 05:58 PM
  #29  
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Originally Posted by black_c7 View Post
yes you can adjust how wide they open the valve (if you talking about the older version)
Just reading various threads online and quite a few people had issues with the BOVs. I mean if its not seeing vac, it should be holding closed.
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Old 04-21-2019, 06:17 PM
  #30  
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Originally Posted by BooSSted View Post
Just reading various threads online and quite a few people had issues with the BOVs. I mean if its not seeing vac, it should be holding closed.
check the seal inside the bov, maybe it causing the problem
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Old 04-24-2019, 05:40 PM
  #31  
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Any updates on a solution to OPs problem?
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Old 04-24-2019, 08:06 PM
  #32  
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Not yet, leak down test be wrapped up by weeks end which will tell if its something internal. I'll update as info comes...
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