Installed a Bing 48 carb on my 036

[RI Chevy]

Hey Mike. Just curious as to what oil you are using and what ratio and fuel.
Really cool experiment.

 

[Backtroller]

I'd like to see the mesh airfilter with stock cover for one test. Just to see how close it is and still look stock.

 

[Canadian farm boy]

Hey Mike. Just curious as to what oil you are using and what ratio and fuel.
Really cool experiment.

I run amsoil saber mixed 40:1 with 90 or 91 e free in all my saws.

 

[RI Chevy]

OK..Thanks.

 

[huskihl]

I'd love to see what you guys come up with. I won't touch the beautiful port work that's been done to my saw.

The Doc does nice clean work. I could never get my intake port sides as square-looking as his. Turns out if you grab an AM jug and get after it without any worries, it is possible, lol.

As far as your step by step, I'd try your 038 boot with zama carb. Then I'd remove the choke shaft and test again.

 

[Canadian farm boy]

So this is what I'm thinking for testing.

Test 1. 038 boot, Bing carb, 036 metal mesh filter

Test 2. 036 boot, Bing carb, 036 metal mesh filter

Test 3. 038 boot, Zama carb, 036 metal mesh filter

Test 4. 038 boot, Zama carb, v stack and foam filter

What do you guys think?

 

[paragonbuilder]

The velocity stack has a choke right? So maybe the stock setup could work just as well but won't have a choke.
What I'd really like to see first though is this exact setup with the Zama carb. Not sure if you could take the choke out of the stack though. Don't need 2 chokes...


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[huskihl]

Yeah I forgot about the v stack. I'd definitely try the stock setup with the v stack as the only mod

 

[Deets066]

Chokes are overrated

 

[Canadian farm boy]

The velocity stack has a choke right? So maybe the stock setup could work just as well but won't have a choke.
What I'd really like to see first though is this exact setup with the Zama carb. Not sure if you could take the choke out of the stack though. Don't need 2 chokes...


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I can swap out the Bing for the Zama pretty easy. I'll try and run the Zama with and without the choke rod installed.

 

[huskihl]

So this is what I'm thinking for testing.

Test 1. 038 boot, Bing carb, 036 metal mesh filter

Test 2. 038 boot, zama carb, 036 metal mesh filter

Test 3. 038 boot, zama carb w/o choke shaft, 036 metal mesh filter

Test 4. 038 boot, Zama carb, v stack and foam filter

Test 5. 038 boot, zama w/o choke, v stack

Test 6,7,8,9 repeat 2-5 with 036 boot

Test 10, 11, 12, 13 repeat 6-9 with bing carb

What do you guys think?

Fixed. No rest for the wicked. Chop chop. Times a wasting

 

[Canadian farm boy]

Give me a couple of days and I'll see what sort of tests I can get done.

 

[huskihl]

Give me a couple of days and I'll see what sort of tests I can get done.

I actually was trying to simplify your sequence by doing all tests possible with the 038 boot first, since that's the more difficult change. As I got thinking about all the different possibilities, it started looking overwhelming . I think if you randomly tried a few combinations, you'd soon realize where the big gains are. Worst case scenario is that each mod is only good for a 5% gain and you'd have to stopwatch each event to tell the difference.

 

[drf256]

We need to figure out a reliable primer bulb and go from there.

I've always wanted to plumb one through one side of the soon to be empty choke shaft holes and clog the other with JB.

A few pumps and voilá, no choke needed ever.

I just know nothing about them.

That partially square Bing Venturi looks smaller than stock to me.

I can tell you that @Larry Joe 360PRO started it's life with an 038 boot and it slowed the throttle response with the stock ZAMA. LOTS of spitback. The top end was OK, but the low and midrange didn't feel right. I put the stock 036 boot on and it woke back up.

Mike saw above with the bing is the meanest looking 036 I've ever seen. Mike has unbelievable technical/fabrication ability that's he's extremely modest about.

Now, Larry's 036 this this on the Dyno with no air filter and a stock boot and carb:

 

[drf256]

That's nearly 8 hp from 8000-13500 rpm. Pretty much the reason I haven't searched for carb options too much.

This same saw struggled to make 5.5 hp with a stock fleeced air filter. I didn't try it with a metal filter, but that's the reason I prefer metal on all of my 026/36 builds.

I think this illustrates, in part, what the airflow to the carb entry can do for power in the 036.

I'm very interested in what the ZAMA will do with the choke removed and a V stack.

 

[paragonbuilder]

That's nearly 8 hp from 8000-13500 rpm. Pretty much the reason I haven't searched for carb options too much.

This same saw struggled to make 5.5 hp with a stock fleeced air filter. I didn't try it with a metal filter, but that's the reason I prefer metal on all of my 026/36 builds.

I think this illustrates, in part, what the airflow to the carb entry can do for power in the 036.

I'm very interested in what the ZAMA will do with the choke removed and a V stack.

Al did we run this saw against the 262's at the gtg. I can't remember.


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[drf256]

No we didn't.

Theres a video of Mustang running it though.

 

[Deets066]

Awesome idea about the primer bulb Doc

 

[paragonbuilder]

Awesome idea about the primer bulb Doc

It's a fantastic idea! The trick will be mounting it and making it look good. I think making it function should be fairly straightforward.


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[Deets066]

@Mastermind put one on John's 026 if I remember right