Custom Rat Rod Twin Turbo Setup
Hey guys,
I added an ebay twin turbo setup to my old truck and am showing zero boost until 6500 - 7000 rpms. Which is over revving my engine. The turbos are mainly for looks, but I'd like to have something. Having small turbos I would have thought they would have spooled well before 6500-7000k. Engine: 350 sbc Wastegates: 38mm, 8psi springs, they don't even open up Blow off valves: Not doing anything Turbo: Compressor: Trim: 55 A/R: .50 Inducer: 50.50 Exducer: 76.00 Turbine: Trim: 73 A/R: .63 Inducer: 65.50 Exducer: 55.90 Besides sounded good, they aren't do anything. ??? |
4 Attachment(s)
pics. I don't have any newer pics, but I have the exhaust down pipes on now. Turbos are spinning pretty quick. I can take a video if needed.
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I'd check for boost leaks first.
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So wait, your saying they boost very fast, as in you can hear them spinning, but your not feeling or getting useable boost untill very high rpm?
I dont see much room for boost leaks from the picture, BUT there is never a good reason to not check for those first. I would think as well that even those those are not *small turbos, they should be a bit quicker. But that does have alot to do with exhaust temps and flow. What is the brand of turbos your using? |
Should be boosting by 5000rpm with 50mm turbos. Are you sure the wastegates are not leaking?
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Could it be that the wastegate collars are installed upside down....or not at all.....?, leaking exhaust pressure that should be spooling the turbo...
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