Weber Carb 32/36 question about timing

[Agustin Alfonso Cesar Charles]

Just a quick question, if my engine is stock and I swap to a weber carb, should I use the stock timing settings? or it changes? just wonderin, since I will get my timing redone and I was wondering while using the stock setting the car felt lazy, but advancing it quite a bit the engine had good response, power and fuel economy, so, what gives then???

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[Agustin Alfonso Cesar Charles]

Stock jet sizes for the dual barrel, the stock one barrel data is also unknown as apparently the same carb was used on the Mitsubishi Lancer, some Subarus Justy, other Geo Metros.

I am trying to go the route of too lean for the mod I made with the exhaust, because I did the test today ( I was installing an alarm and took it for a spin), withouth the secondary, on high rpm is like a decline after 4000 rpm on wot and it won´t go beyond 4500 with ease, not starving fuel but kinda like restricted. Also I forgot to mention that my intake manifold still has just one hole, I haven´t upgraded it to a larger size or make it into a dual barrel manifold.

Getting another carb will mean me sleeping on the couch as my wife gave to me as a gift 😛 also that most of the carbs available are mainly used or china made copy clones, maybe I could downsize on the primary one unit and upsize two units on the secondary so that I won´t be overcarbed and leaner maybe?

[Gary]

[quote=”CarDoog” post=131086]Stock jet sizes for the dual barrel, the stock one barrel data is also unknown as apparently the same carb was used on the Mitsubishi Lancer, some Subarus Justy, other Geo Metros.

I am trying to go the route of too lean for the mod I made with the exhaust, because I did the test today ( I was installing an alarm and took it for a spin), withouth the secondary, on high rpm is like a decline after 4000 rpm on wot and it won´t go beyond 4500 with ease, not starving fuel but kinda like restricted. Also I forgot to mention that my intake manifold still has just one hole, I haven´t upgraded it to a larger size or make it into a dual barrel manifold.

Getting another carb will mean me sleeping on the couch as my wife gave to me as a gift 😛 also that most of the carbs available are mainly used or china made copy clones, maybe I could downsize on the primary one unit and upsize two units on the secondary so that I won´t be overcarbed and leaner maybe?[/quote] Gotcha, ya first things first, get the proper manifold. You should get a dual plane manifold and increase the size of the secondary jets. Part of tuning is trial and error so I’d mess around with the jet sizes and see what works best in this case.

[Agustin Alfonso Cesar Charles]

Hi, I am back….
😛 😛 😛

After the crash and repair of my car, I am back again on the road (two months so far). Right now I have just one problem and I think I have tracked it down to the secondary. I upped my jet sizes (primary: 140 to 155 bought, and secondary: 140 to 150 drilled, ye I have learned and bought quite a few tools) and now I am just wondering something about lean mixture.

Could an engine be lean, not ping and still rise temperature a bit? this happened twice going long uphills (more than 5km) at speed (100km/h at 3000rpm) and my temp gauge increased quite a bit. What I don´t know yet is if on the uphill I am opening the secondary enough to be lean and increase the engine temp so much.

Just wondering if I should go up on the secondary since on flat road I see no problem whatsoever and I am pretty sure I am opening the secondary on those speeds.

[Author]

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