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Big Block Talk! Everything about swapping a big block engine into your cart!



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Unread 11-03-2019, 09:37 AM   #1
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Default Turbocharged or Supercharged carts?

Just curious who all has successfully turbocharged or supercharged there carts? I am in a middle of a custom build and want to do either one on my 18hp Vanguard. Suggestions and opinions? I found a few links but all of the photos have a broken link in them so I can't see how they have done it.

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Unread 11-03-2019, 09:49 AM   #2
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Default Re: Turbocharged or Supercharged carts?

I believe 1989 marathon has a supercharger on his vanguard maybe he will chime in
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Unread 11-03-2019, 10:19 AM   #3
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Default Re: Turbocharged or Supercharged carts?

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Originally Posted by BIKERMIKEYBLACK View Post
I believe 1989 marathon has a supercharger on his vanguard maybe he will chime in
He was one of the forums I was reading and none of the photos would show up for any of the comments. I'm not sure if its because its from 2013?

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Unread 11-03-2019, 12:15 PM   #4
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Default Re: Turbocharged or Supercharged carts?

1989Marathon has been excommunicated. He took all his photos with him.

I did keep up with most of his posts on his supercharger project. He was running lean with his setup, making tons of power. The lean condition caused him to burn a hole in one of his pistons, if I remember correctly. His solution was to engineer a fuel injection setup, which was very complicated. He never did finish the fuel injection, at least not that I'm aware of.
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Unread 11-03-2019, 12:20 PM   #5
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Default Re: Turbocharged or Supercharged carts?

If you could use a turbocharger, it would be more efficient and simple. The biggest issue is fuel delivery. You would have to find a carburetor that enjoys added atmospheric pressure. AF Ratios would need to be monitored. Fuel would delivery would need to be adjustable and progressive. That's the challenge, keeping AF ratios consistent enough to be safe and reliable.
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Unread 11-03-2019, 01:09 PM   #6
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Default Re: Turbocharged or Supercharged carts?



Turbo VTwin
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Unread 11-05-2019, 12:44 PM   #7
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Default Re: Turbocharged or Supercharged carts?

Quote:
Originally Posted by slonomo View Post
If you could use a turbocharger, it would be more efficient and simple. The biggest issue is fuel delivery. You would have to find a carburetor that enjoys added atmospheric pressure. AF Ratios would need to be monitored. Fuel would delivery would need to be adjustable and progressive. That's the challenge, keeping AF ratios consistent enough to be safe and reliable.
---
1989Marathon has been excommunicated. He took all his photos with him.

I did keep up with most of his posts on his supercharger project. He was running lean with his setup, making tons of power. The lean condition caused him to burn a hole in one of his pistons, if I remember correctly. His solution was to engineer a fuel injection setup, which was very complicated. He never did finish the fuel injection, at least not that I'm aware of.
Yeah he got all mad or something, that was a cool project.

Problem is you have normal and then you have boost. You really need more fuel under boost and you need less timing under boost. Its WAY better to have a computer efi do this for you. If you set one up for boost it runs poorly off boost. There are ways of doing some of this mechanically but its difficult, such as a vacuum on a distributor and things like that, boost pressure switch rigged to a fuel enrichment, etc. Then you have to keep the engine in one piece while you do this. Then you see why people just use race parts that are proven instead, or use a motorcycle engine, etc. Naturally I would be one of the first ones to tell you to go for it, if that is what you want to do! Just be aware of the problems and how to solve them. On the other hand I know some have done them and just don't put any serious boost to it, its more for show and with only few lbs of boost you can get away without doing as much.
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Unread 11-05-2019, 02:23 PM   #8
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Default Re: Turbocharged or Supercharged carts?

Here's another nice one


2004 txt 713cc v twin , twin turbo, efi, nitrous etc
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Unread 11-05-2019, 03:33 PM   #9
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Default Re: Turbocharged or Supercharged carts?

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His cart is badass to say the least! Sounds like it is going to fly also! I looks like he has its own turbo for each cylinder. So I would think 2 cylinders into one smaller turbo should work although his engine has EFI.

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Unread 11-05-2019, 04:58 PM   #10
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Default Re: Turbocharged or Supercharged carts?

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Originally Posted by webn237 View Post
His cart is badass to say the least! Sounds like it is going to fly also! I looks like he has its own turbo for each cylinder. So I would think 2 cylinders into one smaller turbo should work although his engine has EFI.

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Yeah it is badazz Maybe he can help you out on some questions. I know nothing about turbos. But I love them.
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