Help with HT80 build

[evan97]

Hello everyone, I finally have the means to build one of these lovely engines and have decided to buy an HT80 for the build. I’ve seen Andy and another guy have one. Is there any current Turbo Jet guides out there? I have Springers Guide but it seems outdated. I hope there’s somewhere that has lists of fuel pumps, fuel nozzles, igniters/exciters, etc that can be used for builds. Also can’t seem to find many specs on the turbo, and Holset doesn’t seem to want to answer my emails even though I own one of their products. I look forward to to this never ending learning process.

Thanks, Evan

[racket]

Hi Evan

Don't worry too much about not getting any info from Holset, a successful engine can still be made based on the turbo's wheel sizes , so measure the "in and out " diameters first , then see if you can find a "size" on the turb scroll to determine its flow capacity ................a pic of the turbo will help us .

Read this info jetandturbineowners.proboards.com/thread/680/diy-turbines.

LOL................it is never ending, so strap yourself in for a long ride :-)

Cheers
John

[evan97]

Thank you there’s a lot of helpful info there. It has a 89mm inducer and at least a 100mm exducer, I’ve only measured the inducer and found the exducer size on the internet. I’ve used JetSpecs to come up with a 7”x21” flame tube, just went to a metal shop turns out 7” pipe at 1/8 or smaller isn’t common I’ll double check measurements and get some pictures later.

[racket]

Hi Evan

An 89 mm inducer is the same as the TV84 I used in my kart jetandturbineowners.proboards.com/thread/40/2-shaft-turbine-kart-build and my turbine bike , try and find a 7" air over water fire extinguisher for the outer can and simply roll a bit of stainless 1.2 mm sheeting for the flametube

Cheers
John

[evan97]

Thanks John. I order 2.5G fire extinguisher, and I’m looking around at 16g 316 Stainless for the flame tube now. If I’m using a smaller combustion chamber than JetSpec recommends, I guess I’ll have to do a bit of math. I’ll try to include some pictures. The exducer is 4.5” and it’s a twin turbo scroll which I’ve heard isn’t preferable hopefully doesn’t hurt too much it’s 4” diameter together.


imgur.com/a/GbJEM58



Evan