Mazdee's Carbed 20b Race Car

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Old 01-15-09, 04:55 PM
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Mazdee's Carbed 20b Race Car

Here's some vid's of my mechanic's carbed 20b race car with a custom seethrough Racing Beat distributor.

http://ca.youtube.com/watch?v=3UT5-5FFsC8

http://ca.youtube.com/watch?v=N42GfeSJ734

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Old 01-15-09, 06:55 PM
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We don't know yet since he hasn't taken it on the dyno yet. Everything on the car has been custom fabricated. The porting is also his own design. However, he doesn't want to estimate numbers and wants to get a dyno sheet since he's never done these ports before. Just look at those intake runners lol. The car weighs ~2,400 pounds with driver.

What do you mean by side drafts?

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Old 01-15-09, 07:16 PM
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He means the carb would be laid horizantal instead of pointing up vertical. (sorry for the crappy spelling)
Old 01-15-09, 07:19 PM
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Intake wrapping over the engine? I believe he was trying to get the best airflow and atomization possible. He admits he's never done anything like this and calls it pure redneck style lol. I keep asking him when he's gonna dyno it but all I get back is soon ^_^

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Old 01-15-09, 07:40 PM
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I was at his shop admiring the engine and the car on the lift as I waited for my oil change. Those guys really know their stuff.
Old 01-16-09, 01:18 PM
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I'm still not sure what side drafts look like, do you have a picture? If I remember correctly when he was deciding how to make his intake, there was an issue of it hitting the reinforcement bars. So instead of cutting the bars, he decided to do this.

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Old 01-16-09, 02:15 PM
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kids these days... don't even know what a sidedraft carb looks like.

i'm not sure there is sufficient room to really fit a sidedraft in the 3rd gen engine bay unless you place them over the engine and curve the runners 180 degrees into the intake ports.
Old 01-16-09, 02:21 PM
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Originally Posted by gracer7-rx7
kids these days... don't even know what a sidedraft carb looks like.

i'm not sure there is sufficient room to really fit a sidedraft in the 3rd gen engine bay unless you place them over the engine and curve the runners 180 degrees into the intake ports.
I didn't even know how a carb or distributor worked until my Dave showed me lol. Gotta love the simplicity of it. Reliable ftw.

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Old 01-16-09, 07:50 PM
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Originally Posted by gmonsen
Thewird... I'll take pictures tonight. The only reason for considering it is not to have the velocity stacks popping up through the hood. As a race car, it may not matter at all...

Gordon
I asked him about sidedrafts and he said sidedrafts aren't recommended and it wouldn't fit either. Yes, its a race car so it doesn't matter . Good news, tomorrow he's gonna finally dyno it after finishing something off, I'm gonna go ^_^.

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Old 01-16-09, 09:02 PM
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Nice!!
Old 01-16-09, 09:10 PM
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oh yeah baby!
Old 01-16-09, 09:13 PM
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That car is awesome! Ontario rotaries FTW. Carb's are almost a forgotten relic, in my automotive courses in College they didn't even cover Carburetors, only naming off a few parts.
Old 01-16-09, 09:48 PM
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Looks like he is using two 48 or 51 Weber IDA's and on the front one he turned the carb at an angle as he only needs to use the one throttle bore/body and he just blocked off the other one. Very creative and it sounds really good. Most 20b carb setups I have seen use the three body IDA style carb that was used on older porsches. But they are pretty hard to find so this was a good idea.
Old 01-16-09, 10:13 PM
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Originally Posted by gmonsen
Thewird... I have no idea why sidedrafts would not work fine, but he has a mean motor (and a very odd looking FD).

Gordon
From what I understood it wouldn't fit and the fuel wouldn't have a lot of room to mix with the air.

Yes, they are Weber carbs but I'm not sure on the size.

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Old 01-19-09, 08:18 PM
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The looks aren't my taste, but that sounds pretty mean!
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