giarcpnw

Hey guys,



I currently have a Racing Beat and custom Holley (Weber power plates on the primaries) set up on my 6port 13b. I like the power it makes. Pulls like crazy but, there is the cutting out on hard left turns. It's driving me nuts when i go play in the canyons so......



Thinking about going weber now. Can any one point me to a good comparison thread or quickly tell me the merits of the IDA vs the DCOE carb set up?



Which makes more power? Are there pros and cons to each? And i guess even more important, do they make as much power as the Holley? I basically liek to play in the so cal canyons. Not looking for a drag car or anything.



This motor is in a Datsun 510 with true dual exhaust. Mild porting on the engine. (unfortunately by previous owner so i can not say exactly how much porting)



Thanks,



Craig

Racer X

Thats the problem with down draft carbs.If you like a straight line car then a holley is awesome but if you love cornering like alot do then yah the sidedraft is the only way to go.I had a Dellorto 48 DHLA before my 45 DCOE on my stock port 13b 6-port and both have been good carbs.I want to try a downdraft setup one day with a fogger kit.I like long straight sections of road . Do a search i think theres threads either here or in the first gen section on sidedraft vs. downdraft.

RONIN FC

I would mod the Holley to withstand corners...



You can make a Holley withstand extreme angles in 4x4s and rock crawlers. They even make Holleys you can use in a boat. Why cant you use yours to take a corner?

giarcpnw

You can make a Holley withstand extreme angles in 4x4s and rock crawlers. They even make Holleys you can use in a boat. Why cant you use yours to take a corner?

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I think alot of it has to do with the fact that the Holley is rotated 90 degrees on a Rotary. I have the cathedral bowls and the race center pivot floats and the jet extensions. I just think the Gs are just too much for it in a hard corner. At least that's what i have read and experienced.



I'll look into the sidedraft vs downdraft. thanks guys.



C

Kentetsu

Any chance that your fuel pressure is too high? I love my Sterling Nikki and highly recommend them. Good luck!

Lynn E. Hanover

A few years back we had that same problem with the stock 4 barrel in the RX-2 in the RS series. We had to run the carb that came on the car. I forgot if it was lefts or rights but the engine would shut off in a hard turn like the ignition had been cut.



It then would not restart for a few minutes. The bowl vent was just a short tube that ended in the center of the air horn and was only an inch above the fuel level in the float bowl. So in a one G turn where the fuel surface would be at a 45 degree angle in the bowl, the fuel would pour out of the vent, and flood the engine.



The fix was to add a bowl vent tube to the center of each float bowl and to extend all three tubes up 2" into the air cleaner. Also the Mazda needle was a 2 piece deal with a spring inside it. That was made solid with the plastic tube from the inside of a Bic pen.





Car ran fine in all corners and under hard braking.



Lynn E. Hanover

RONIN FC

I just run a bowl vent baffle and jet extentions in my Holley, the baffle does essentially the same as your saying. Of course, these parts wont work on the stock carb.



In extreme cases, you can connect a tube from both bowl vents with a series of holes drilled across the top. This keeps any fuel slosh from going into the venturis, but still allows the bowls to vent.