R2 Edelbrock Carb Tip

[jlmccuan]

Making pretty good boost now. You know all those little vacuum caps they use to cover the unused ports? They should be clamped on even if the ports have the barb on the tube. I blew every one of them off on a brief full throttle burst, lol.

Jim

____1966 Avanti II RQA 0088_______________1963 Avanti R2 63R3152____________Rabid Snail Racing

[mbstude]

That Orange Whirly Thing is really pumpin' it out huh? [8D]

I know a guy in Florida with a '62 Daytona HT. 289 4 speed with a turbo. He was telling me that he set the boost up to something like 14 pounds once, and blew both head gaskets, in several places between the bolts.

Matthew Burnette
Hazlehurst, GA

[bige]

in the same vein, a standard, modern type pcv valve will allow boost to the crankcase. the r2 valve is one way with a needle and seat to seal under boost.

ErnieR


On its way to a 15.097 Spring 2006.

[candbstudebakers]

Talk about boost, I picked up a 59 hawk with a 259 engine had been sitting for a while but owner said it ran good, well I got it started and it smoked so much it ran the guys out of the shop next door and with only one exhaust pipe, It ran real smooth ,I check it closer and found some one had taken the road draft tube and replaced with a hose and right back into the vacuum outlet at the back of the manifold letting the vacuum suck every thing right back into the engine, once I remover that and put it together the way it should be guess what ? no more smoke but ran like hell and rough, did a cyl. test and #8 had nothing and the rest had from 35 -90 lbs. so I guess the vacuum was pulling it all back into and pushed it up from the bottom to make it run smooth but it also smoked like hell and pushed the valve cover gasket out the sides, pulled it apart and # 8 had a hole at the side .

Bob Peterson / C & B Studebakers

Castro Valley, CA

[coyote]

Jim -
What model Edelbrock carb are you using?
Electric choke, or manual?

Steve
Minden, Nevada

1950 2R5 truck
1960 Hawk R2 4 speed project

[jlmccuan]

I used an Edelbrock 1406 blended with a Carter R2 carb, for drag trim. It was electric choke. The choke plate and linkages are removed and I used the housing to mount the throttle position sensor for the data logger. The Edelbrock body is drilled and ported for the throttle shaft air seals, plus the shafts are o-ringed to contain the extra boost.

If we want to show the car as original it takes a good day's work to pull off the race stuff and put it back to stock.

Jim

____1966 Avanti II RQA 0088_______________1963 Avanti R2 63R3152____________Rabid Snail Racing

[bige]

how much boost are you running?


On its way to a 15.097 Spring 2006.

[jlmccuan]

Ernie, I haven't let it run up full throttle under a load for more than 2 or 3 seconds yet, but it was just below 10 psi at 5000RPM yesterday and the boost was still coming up. BTW, thanks for your help on the carb. I'm going to build another when I find a good Carter top plate. Anybody have one or a whole carb they want to part with?

If the weather allows I'll be making some full throttle passes this weekend. Changed the jetting and metering rods to stop it from loading up rich. I can lean it up more by several steps in metering rods I have on hand with these jets. Trying to get the data logging to sense ignition advance now.

Any suggestions on plugs? I am running the Pertronix coil and electronic ignition.

Jim

____1966 Avanti II RQA 0088_______________1963 Avanti R2 63R3152____________Rabid Snail Racing

[bige]

I run r44 ac plugs, just cause I like ac's. RE: the carb top, the main difference I can see is there are no vents outside of the air horn on the r2 version. i found a corvette carb on ebay that had no vents either but i never took it apart to compare with the stude to see if there were any differences. the other choice may be to just block those holes on a run of the mill afb but i haven't dug into it.

who did the blower for you?

i'd be very interested in your discovery on the timing.

ernie


On its way to a 15.097 Spring 2006.

[jlmccuan]

I'll be glad to share the log charts when I get it all working. The timing is the only thing left. I had to make an optical sensor to measure the time between the spark and TDC to get the advance realtime. Also logging throttle position, manifold air pressure, RPM, accelleration, exhaust temp, and exhaust O2. With car weight and some other constants it will also do torque and HP, so I'm really interested in getting some good rolling dyno charts.

Jim

____1966 Avanti II RQA 0088_______________1963 Avanti R2 63R3152____________Rabid Snail Racing