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Drove the car to the office today. Sure is great to drive it again. Pulled the carbs apart to check for crud in the jets. All ship shape. Pulled the tops off. All clean.

Can't figure out whats causing this crappy miss under hard acceleration / under power. 

I will check the floats: 1533614621990107481146915336147064261681872516

 So each of these photos above has the float arm just touching the spring loaded BB.  One is 20mm at the edge of the furthest  float. The other is 22.

FULL droop is 28 on one 30mm on the other,  plus the gasket 

15336149274171329116234

9mm inside / 11mm outer side (closest to my thumb)

15336149835231970273577

9.5 / 9.5

This is all voodoo to me. Thoughs?

Ted

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Last edited by TRP

I'm wondering if I need to mess with my carb floats. Car is running like pooh. High RPM miss in first. If I hammer the throttle in first the rpms start breaking apart like crazy above 4200.  Same thing with a long pull in third. 4300 the car starts to stumble and sputter.  Its a crap show.

Need a weber mechanic local.  

Havent ruled out the ignition module from when I wired the cooling fan to the negative side of the coil.

 

 

Pertronix module? You know how I feel about that. What you are describing sounds exactly like a bad module. You can prove it by throwing a timing light on and watching the spark scatter all over.

I’m not wild about the floats being a different height side to side inside the same carburetor, but I think your miss is ignition. Those floats have been exactly like they are for a long time- they were like that when the car was running well. Nobody got inside and bent them while you were sleeping.

95% of all carburetion problems are ignition.

Last edited by Stan Galat

It's the Magnaspark II distributor. If that's a Pentronix module then you can put me in the same camp as you.  I think this was my fault though.  

I ordered a new one. $70.00 plus shipping.  I slap the carbs back together tonight. 

I will say that I drove the car all over yesterday and it was joy. The 5 speed was nice but it wasn't life changing.  (eeek!)

IaM-Ray posted:

Give it time

But if you were looking for a drop in rpm cruising with an aircooled you dont get ghat with a five speed

It's all about how you build the five speed to achieve your goal. yes with tire size, motor size/cam/head combo and the right fifth gear you can dropping the rpm at cruising speed.  type of shroud and fan speed are also a factor.

Anthony posted:

Drive the car!!!!!!!! be honest with us. shifting thru the gears with that five speed has to be better than that four speed. If it isn't, maybe it's time to buy a boxster.

Hahaha! Let me gwt through this spell with the ignition and then I will be able to focus. 

I will say going from 5th to 4th is great. No more pegging the RPMs with each down shift. 

 

Ironically, the close-ratio five-speed makes more of a difference the slower you drive.

If you normally blast around all day at 4-5000 rpm, and make most shifts near the redline, you may not need a five-speed. Yeah, you'll get off the line and through the quarter faster with that extra cog, but if that's all you care about, you can probably just juggle the ratios in your four-speed box and accomplish almost the same thing.

It's the rest of the time - when you're just noodling around in the neighborhood, or carving through some twisties, or cruising a fast two-lane with some steep hills, that you start to really appreciate the five-speed.

I think my engine is just about in the middle of the heap as our cars go. A mildly-tuned two-liter set up to have some low-end torque, but to keep its cool here in the land of Dry Heat. It's strong, but not a screamer. It's happiest around 3000 rpm. By 3500, it's starting to work. By 4000, it's tapping me on the shoulder and saying, "Hey, how long are we going to keep this up? I take it to 5000 when I really need to scoot - like merging onto a freeway. It's a blast and comes on strong there, but that's not where I or the motor want to spend most of our time.

Ted rang one of the five-speed bells - that 5-4 downshift is one of the main attractions. You're on the highway, around 55-60, and you come to a hill that's a little too steep for top gear. With my four-speed, I dreaded that downshift to third. Bang, there we were at 4500, and I had a buzz saw in my ear. Now, it's 3800 or 4000, and no big deal. A two-liter will pull up almost any hill in that gear at pretty low speeds with no complaints.

That gear is also my cruising gear of choice on a lot of the foothill roads around here. These were graded for horse-drawn wagons in the Gold Rush - tight turns, and short, steep grades. You're cruising at 35-60 and need short bursts of torque to power through. A freeway gear is just too tall here, but third is too short.

Bottom line is that the car is just a lot quieter when you want it to be with the five-speed. You've got more options. Tear it up or just cruise. You never worry about having the right gear in a Civic or a Corolla. This brings the same kind of ease to a Speedster, even if you don't have a monster in the engine bay.

 

Stan Galat posted:

Pertronix module? You know how I feel about that. What you are describing sounds exactly like a bad module. You can prove it by throwing a timing light on and watching the spark scatter all over.

I’m not wild about the floats being a different height side to side inside the same carburetor, but I think your miss is ignition. Those floats have been exactly like they are for a long time- they were like that when the car was running well. Nobody got inside and bent them while you were sleeping.

95% of all carburetion problems are ignition.

Listen to Uncle Stan. We all know the Pertronix (piece of sh*t) modules are made to a price point and are not up to the heat of a VW engine compartment (was it Gordon who said they weren't made of sufficiently hardened components for the intended use? Typically built for the cheap assed VW aircooled market!).

And yeah, the extra gear isn't life changing- that's what getting married, having kids, committing to buying a house and changing careers (you know- growing up and becoming (ughh; I hate this word!) responsible!) is for. Listen to Mitch, though, and go chase Terry down through a nice canyon drive. I'll bet when you tell us about it you'll be pretty excited when it gets to the part where you were able to keep up with him and sliced and diced those guys who thought they'd blow you away and make you both look like fools. 

That's what 5th (and a 2 liter) is all about...

Last edited by ALB

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