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Post by twenglish1 on Sept 7, 2021 11:05:55 GMT -5
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Post by wannabebuilderuk on Sept 7, 2021 12:56:31 GMT -5
69mm inducer so definitely will give you a little bit of thrust however you wouldn't be able to go to 100% with it being a mass produced product.
Well I mean you could but I'd be behind a blast shield lol. As for thrust values plug the numbers into jet spec for a rough idea
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Post by twenglish1 on Sept 7, 2021 13:13:30 GMT -5
I had been searching for something larger, 100mm or so inducer, such as a holset HX80 series, but the price goes up drastically, and is way out of my price range, any suggestions on cheaper similarly sized units?
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Post by wannabebuilderuk on Sept 7, 2021 14:10:55 GMT -5
If you want something that big keep an eye on ebay or Craigslist, hell even some machinery auction sites have some (recently was one here that had $10k+ ship turbos sell for $50). Or find a scrapyard that's big enough to have heavy machinery and the engines often use big turbos, even large trucks have big enough ones.
Worst case is you can get a decent size one from Alibaba that should do the trick
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Post by twenglish1 on Sept 7, 2021 16:10:03 GMT -5
Found this slightly bigger 76mm inducer, looks like i could get around 65lbs of thrust best case according to jetspecs www.ebay.com/itm/255036184239 |
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Post by wannabebuilderuk on Sept 7, 2021 19:24:15 GMT -5
Sadly that wouldn't work as the turbine wheel is smaller than the compressor, you need at least 20% larger surface area wise.
Have a look for scrappers near you and pop round to see if they have anything that might have a turbo, you need something with 10L+ capacity as then you start to get the big boys.
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Post by twenglish1 on Sept 7, 2021 20:00:01 GMT -5
Any particular turbo models to keep an eye out for?
And by 20% larger you're comparing compressor inducer area to turbine exducer area? Or are you referring to total surface are of all the blades and everything?
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Post by racket on Sept 7, 2021 21:13:01 GMT -5
Hole in back area vs hole in front area
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dieselguy86
Veteran Member
Joined: September 2014
Posts: 187 
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Post by dieselguy86 on Sept 7, 2021 21:43:54 GMT -5
Not sure where you live, but caterpillar used gt55 turbos in the 05+ c15 acert truck engines, known as the low pressure turbo. The early models are journal bearing with a 1.5x a/r open turbine housing. I believe 85 or 88mm compressor. The 08 SDP engines used a ball bearing gt55 and 1.4 a/r turbine housing, all of them had titanium compressors.
Best part is you can pick them up cheap, $300-$500 range. That's about as big as your going to get for cheap, and with open turbine housings.
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Post by twenglish1 on Sept 7, 2021 22:04:24 GMT -5
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Post by wannabebuilderuk on Sept 8, 2021 4:24:33 GMT -5
That doesn't look too bad for something that's more likely to produce some nice thrust but keep looking around and something might come up, ultimately it depends on where you live but if you're in the US you have the best chance for a big one
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Post by twenglish1 on Sept 8, 2021 5:25:05 GMT -5
Yeah I'm in the US, I'll have to check out some junkyards see if any have old heavy equipment
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Post by twenglish1 on Oct 29, 2022 14:54:11 GMT -5
Anybody have any success using a Cummins ST50 turbo? I was having a hard time finding compressor and turbine sizes but it looks decently large
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Post by racket on Oct 29, 2022 17:04:29 GMT -5
The good old ST50 , its been used a lot , bit outdated though .
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Post by twenglish1 on Oct 29, 2022 17:53:24 GMT -5
Price seems right, would it be a good option for making some decent power?
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