Rocketman Carb Adapter

[95Compact]

Tom, you're right, its a great tool for monitoring the engine, above and beyond the trained ear...

I have the wideband system because I use it (continuously) in my other car, a 1995 BMW 318ti which I 'converted' to Megasquirt EFI for a custom turbo install.

"I wonder how far you can safely lean the AFR to improve MPGs? 12, 13? " - You have it backwards, 12 A/F is rich, remember it's the 'AIR' part of the ratio we're describing

14 parts air to 1 part fuel is "14:1" or "14 A/F ratio" or "14 AFR". More air in the ratio means leaner mixture.

In the BMW, I have a highway cruise fuel map which runs between 14.7 and 15.2 AFR. It nets me about 10% better MPG over the stock EFI computer.

Cheers

[TominMO]

Ok, installed my Innovate LC-1 today.

At idle, it was running about 12.1 A/F ratio and this was easily tuned to 14.3 with the idle mixture screw. I was VERY impressed with how direct and repeatable this adjustment was in changing the idle AFR, and also how stable the AFR was (it held steady within about 0.1 or 0.2).

When the RPM ran up (with no load), the AFR went very rich - all the way to 10.1. It may be even richer than that because the Bosch WB O2 sennsor and LC-1 can only read down to 10 AFR.

I couldn't drive the car because my laptop battery was dead and I had to have the extension cord plugged in, hehe. Should be able to get more data tomorrow.

I can see that the air corrector jets are 170 and 180, but I can't see the main jets. Maybe I'll call Weber on Monday to ask what they currently ship the Suzuki Samurai kits with (and verify that they're still the same as drumnerd's).

Aha, the light is going on for me regarding wideband. You can use it to monitor the various stages of your Weber carb's performance, and adjust accordingly to keep it at ~14.3--either via turning a screw for idle adjustment, or jetting/emulsion tube changes for higher RPMs.

With our EFI systems, it seems there is less leeway to change things, unless we go to a stand-alone system like Megasquirt. It would be useful tho for monitoring what bolt-on changes have been made, like cams, headers, CAIs; and to monitor the AFR changes when changing ignition or cam timing.

I wonder how far you can safely lean the AFR to improve MPGs? 12, 13?

[95Compact]

Ok, installed my Innovate LC-1 today.

At idle, it was running about 12.1 A/F ratio and this was easily tuned to 14.3 with the idle mixture screw. I was VERY impressed with how direct and repeatable this adjustment was in changing the idle AFR, and also how stable the AFR was (it held steady within about 0.1 or 0.2).

When the RPM ran up (with no load), the AFR went very rich - all the way to 10.1. It may be even richer than that because the Bosch WB O2 sennsor and LC-1 can only read down to 10 AFR.

I couldn't drive the car because my laptop battery was dead and I had to have the extension cord plugged in, hehe. Should be able to get more data tomorrow.

I can see that the air corrector jets are 170 and 180, but I can't see the main jets. Maybe I'll call Weber on Monday to ask what they currently ship the Suzuki Samurai kits with (and verify that they're still the same as drumnerd's).

[Rocketman]

I would offer either have a cast one, or a stamped/welded steel bracket depending on it's shape. I noticed it was darker, I like the color! That looks like a healthy amount of hood clearance, too.

[95Compact]

A better solution than the throttle cable bracket adapter would be a new stamped steel cable bracket... I may just do that instead.

[95Compact]

Yep, I didn't feel like trying to pull the studs, so I cut some aluminum tube I had sitting around.. Oh, and I painted your adapter with Rustoleum Hammer paint, lol =)

I'll give you dimensions for the stock B3 throttle bracket adapter once I get mine made.. the current one in the photos is just temporary =)

[95Compact]

Here's one from afar to show the air cleaner clearance:

[Rocketman]

I'd like to offer throttle brackets as well, if someone would like to give detailed measurements of theirs I will produce them & include them with the kit. Other than the cable bracket there's no fabrication needed for the install.

95Compact, your install is gorgeous, it's incredible how much that cleans up the engine bay. You stuck with the stock studs, and not the 4x bolts that came with the kit?

[drumnerd33]

I used my stock throttle braket with mine.

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[darkfact]

Does a kit exist that requires no fabrication for the throttle bracket? That engine bay looks a billion times better with that weber on there. Once
I find steady work I'm buying one immediately.

[drumnerd33]

Yup I remember that pile of worms

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[95Compact]

And this is some of what it replaced:

[drumnerd33]

Looks good

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[Spike]

So pretty..

[95Compact]

Ok, figured it out =)