Enrichment circuit?This fingernail polish is a good idea! Maybe you could temporarily block off the inlet to the accelerator pump, or....? It has to be getting in somehow.
Bill
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Enrichment circuit?This fingernail polish is a good idea! Maybe you could temporarily block off the inlet to the accelerator pump, or....? It has to be getting in somehow.
Enrichment circuit?
Bill
Enrichment circuit? No. Removed the pintle valve and cleaned the black goo off it and the seat in the carb. Dropped a 5mm ball into the well, replaced the spring, made excellent contact. Then replaced the cover nut, which put tension on the ball. Made absolutely no difference. I'm not so sure the circuit is complete. Going to check it with carb cleaner as Shannon suggested.
Next, locate the accelerator pump inlet and block it. Yes, I'm close to the end of the list of possible culprits, which does not mean I'm close to getting it to carburete correctly.
Bill
No real change. So I'm in the process of plugging the 3rd progression jet and have installed a .072" main. Stay tuned.
Bill
The air correction tube has had holes in it both towards the end of the stock tube's life in the carb and the homemade tube I'm now using. I just put a few (6) more in it.So, the air correction jet was maybe ineffective because there were no holes in the emulsifier tube....?
Well, it is way too lean. I think that I did not completely block off all the progression jets with the nail polish. Now runs at 2400 in 4th gear with mvs in the 40's -50's instead of the mid 900's. Will drop the air jet to .080 to see if I can get the main circuit working to cover the gap.
Will use the blocked off progression jets to get a good main fuel/air jet relation worked out. Then work on the intermediate circuit. In the meantime, I will also go to a larger intermediate jet to be sure I'm not starving the intermediate circuit of fuel like I had done with main circuit.
Bill
Ooff.. wire wheel in a dremel? Heat gun....?Mystery time. Intermediate jet was the largest I have, so no change. Decreased the air jet from .099" to .081". Reinstalled the carb, then came the big surprise! I could barely get the car to move, there is a huge off idle hole. There was a weak off idle in the previous test that I could easily compensate for. I could barely get the car out to the highway - no way that I would risk an attempt to drive further. This hole is massive in comparison to the previous one and I can think of no earthly reason why the change.
So, I'm going to remove all the JB Weld that I can, hoping to open up one or two cracks that will bleed a bit of gasoline.
Bill
Here is the reason I won't be using a Volvo transmission/O.D. Please note: The bell housing is a functional extension of the gearbox, setting bearing clearance and providing oil control. The idea was to mate the Alpine bell to the Volvo transmission. That's way beyond my meager talents.Don, point me to where it would be more fun to run a stock (but foreign) Alpine transmission than a Volvo transmission.
Bill
Some wild thoughts have passed through my mind, but were quickly discarded. For openers, the input shaft is about 3/4" SHORTER than the Alpine bell. That pretty much eliminates mating the Volvo bell to the Alpine engine. Also makes making a special plate to go between the trans and Alpine bell. The only viable method would be to graft the small end of the Volo bell to the Alpine bell, which could be shortened enough to compensate for the shorter input shaft. I can shorten then, no problem. Whack them off on the bandsaw and clean them up on the mill. How to properly align them for welding, well I don't have a clue where to start on that problem. Maybe make a plate to bolt onto the engine end of the Alpine bell. The plate would engage the pilot bearing. Set the Alpine bell on the Volvo trans, positioning it to align the Volvo pilot with the Alpine pilot bearing, then weld. Much easier said than done. The Volvo trans weighs nearly a hundred pounds. Oh yes, I can't weld worth a crap, not to mention welding Aluminum. May have to make a plate to set between the two halves in order to mate widely differing shapes. I'm pretty sure that all of that could be done, not at all sure I could. Especially the welding part. Maybe if an itinerant welder happened to appear.Bill,
Wow, I like the engineering design, but I understand some of the issues for your project.
Any thoughts about another option to try?