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-   -   RX-Snake: Engine Related (http://www.motorgen.com/forum/showthread.php?t=1054)

Vettezuki 02-01-2009 12:20 PM

Quote:

Originally Posted by 94cobra69ss396 (Post 14587)
You can find a used Holley carb at the Long Beach Swap meet next weekend. Phil and I went to the last one and there were a ton of them there. You should be able to pick one up for around $50. Then we can just rebuild it. A rebuild kit cost about $50. We can also use a power valve block off plate ($4.50 from Summit) and run larger jets in the secondaries so we don't have to try and tune it for the power valve. This is the same way my carb is on the Chevelle.

Sorry for the dumb uestions, but is there (what model) has the mechanical secondaries and four corner idle set? Glenn said that for using a standard carb, the four corner idle adjust es muy importante.

94cobra69ss396 02-01-2009 12:28 PM

Quote:

Originally Posted by Vettezuki (Post 14589)
Sorry for the dumb uestions, but is there (what model) has the mechanical secondaries and four corner idle set? Glenn said that for using a standard carb, the four corner idle adjust es muy importante.

4150 is the mechanical secondaries version and a 4160 is the vacuum secondaries. Only the 750cfm and 850cfm 4150 has 4 corner idle circuits. All other 600, 650, 700 and 800cfm have 2 corner.

Is Glenn going with you to the swap meet in Long Beach?

Vettezuki 02-01-2009 12:35 PM

Quote:

Originally Posted by 94cobra69ss396 (Post 14590)
4150 is the mechanical secondaries version and a 4160 is the vacuum secondaries. Only the 750cfm and 850cfm 4150 has 4 corner idle circuits. All other 600, 650, 700 and 800cfm have 2 corner.

Is Glenn going with you to the swap meet in Long Beach?

I'll ask if he wants to go, but at least Joe will be going.

94cobra69ss396 02-01-2009 12:58 PM

Quote:

Originally Posted by Vettezuki (Post 14591)
I'll ask if he wants to go, but at least Joe will be going.

If he can't go and you want me to meet you guys there just let me know.

enkeivette 02-01-2009 02:02 PM

Quote:

Originally Posted by Leedom (Post 14561)
Ben, just do not put the engine back together yourself. I am sure plenty of us would love to help and learn as well. I am sure that Sean for example would love to stand around and watch. He will point to something a few times and do his best to get some grease on himself. Relax Sean, every good team needs a guy who can order and get a good pizza. That can be your role.


Sean can do anything and everything that the rest of us grease monkeys can do, how hard is it to work a wrench. But manicures are pricey and sweat isn't good for a perm. :pot_stir:


Quote:

Originally Posted by Vettezuki (Post 14483)
Began stripping the engine down. This was my first time doing this kinda work, and I learned the push rods just sort of fall out when you pull the heads. :leaving: You can click on the images for the hi-res versions.

You're supposed to pull off the rockers, then carefully slide out the pushrods and lay them aside. Keeping them in order and oriented correctly. Silly butt.



A few pages back someone was asking about jet recommendations. Take my word on this, you won't get any. E85, gas or lemon juice. No one likes to give carb jet recommendation because every engine IS different. I found an engine almost identical to mine in every way (when it was NA), and with jets larger than he had, I was over 15:1 AFR while he was right in the 12s.

If your fuel pump puts out slightly more pressure, or your LSA is different, it's all out the door. And you are now a pioneer, despite the thousands of blown SBFs that came before you.

Vettezuki 02-01-2009 02:11 PM

Quote:

Originally Posted by enkeivette (Post 14595)
. . .
You're supposed to pull off the rockers, then carefully slide out the pushrods and lay them aside. Keeping them in order and oriented correctly. Silly butt.

Yeah, these ones did a little dance on the floor. But I learned.

Quote:

A few pages back someone was asking about jet recommendations. Take my word on this, you won't get any. E85, gas or lemon juice. No one likes to give carb jet recommendation because every engine IS different. I found an engine almost identical to mine in every way (when it was NA), and with jets larger than he had, I was over 15:1 AFR while he was right in the 12s.

If your fuel pump puts out slightly more pressure, or your LSA is different, it's all out the door. And you are now a pioneer, despite the thousands of blown SBFs that came before you.
There's nothing more funner than being a pioneer.

big2bird 02-01-2009 03:31 PM

Quote:

Originally Posted by enkeivette (Post 14595)



A few pages back someone was asking about jet recommendations. Take my word on this, you won't get any. E85, gas or lemon juice. No one likes to give carb jet recommendation because every engine IS different. I found an engine almost identical to mine in every way (when it was NA), and with jets larger than he had, I was over 15:1 AFR while he was right in the 12s.

If your fuel pump puts out slightly more pressure, Nopeor your LSA is different, it's all out the door. And you are now a pioneer, despite the thousands of blown SBFs that came before you.

Basically, a carb is nothing more than a metering device. You can place well tuned carb on one car, then another, and it will be real close. AFR is AFR, whether it be a Chevy or a lawnmower. That is what wet flow bench calibration is all about. If you and your buddies carb are that different, onbe is f----d up.

big2bird 02-01-2009 03:33 PM

Quote:

Originally Posted by Vettezuki (Post 14596)
Yeah, these ones did a little dance on the floor. But I learned.

Inspect, but buy new ones, those will end up in the trash.. You probably want to buy new ones after checking your geometry anyhow.

BRUTAL64 02-02-2009 08:47 AM

Quote:

Originally Posted by Vettezuki (Post 14573)
I'm still holding out hope for the 174.

This looks like a pretty good carb for that app. Check specs:

It's pretty and is a 4150. So, it looks good.:sm_up_there:

BRUTAL64 02-02-2009 08:48 AM

Quote:

Originally Posted by 94cobra69ss396 (Post 14574)
I don't think we are going to want a vacuum secondary carb. I would go with a double pumper.

Yea, I concure.:D


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