tuning 2300

Mike, I think your idea (the yankee in me says ideer) of selling ready to go carbs is a great one. I have to admit I should have read your response a little closer and I would have known you guys do that. I purchased a brand new carb from summit and it has issues, lol. Fwiw, bobn
 
bobn said:
Mike, I think your idea (the yankee in me says ideer) of selling ready to go carbs is a great one. I have to admit I should have read your response a little closer and I would have known you guys do that. I purchased a brand new carb from summit and it has issues, lol. Fwiw, bobn
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None of us around here were born with "carb dial-in" deetail in our haids Bob! We lernt this shit by scruuin' up many set ups and then figgrin' out what works! I keep sayin'...these motors are not chryfordrolets...they are very unique in the ignition and fuel systems set-up and the info we have developed and share around here is for only IH-specific applications! Big difference!

When a Holley 7448 aftermarket 2300 "kit" is ordered through ihon, a new carb is removed from the box...all systems are verified, all fasteners cranked down much tighter, all "adjustments" needed for the particular customer's engine app are performed (baseline settings), all external components installed, and a complete kit of peripheral pieces is then assembled/packaged/boxed. All data pertaining to that particular order is retained electronically so that down the line if assistance is required with dial-in, we know what the complete set up on that package is. And...all this is documented with photos and archived.

If a carb with electric choke is ordered, then we install that item for the customer, no additional charge...that can be a very tedious piece of work for someone not familiar with Holley ways!

Ya won't find that kind of customer service anywhere else!!
 

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Thanks for that link Mike. That was helpful. The machinist thought id need premium if zero decking. Still dont know the exact compression. So, cant determine whether reg or mid, right? Around 9:1 doesn't mean over 9:1. Fuel type has got to be a big factor when you build these carbs.CA so, I should hold off on ordering, untill I know the exact compresion specs, right? The compression will be high for reg, but low for mig grade. Also can I get a price for this carb with electronic choke? Thanks again for all your help.
 
Actual compression ratio won't have any impact on how a carb is set up if sourced through ihon. Cam choice and ignition system (current and future) does to a small degree. But that is part of dial-in which any engine/carb package is gonna require. We not dealing in oem/emissions stuff where "specs" matter. This is performance tuning to go with a performance engine build.

But it'll be so close to right ya May not be able to improve upon it. Ya still need to go through the dial-in process however. Even if you bought a new oem/"emissions" carb off the shelf at the local IH dealership (impossible nowadays!), there still must be a tuning/adjustment phase on any install!

As for price, you will need to call Jeff about that...I don't have anything to do with pricing, I just assemble whatever the boss tells me to...and that is dependent upon exactly what pieces you want...and what pieces you May be able to re-use. These are custom-assembled based on customer need. But for reference...the set-up in the pic I posted is under $600, shipping not included. For instance...if you are using a non-egr intake manifold, then ya don't need the egr blocker plate kit. But if ya have hood clearance...ya might wanna add a 1/2" spacer to the carb package in addition to the heat dam gasket.
 
You said under 9:1 I can run regular I tune the carb and time it to do so. You meant ignition timing right? And is 4 degrees advanced correct for the cam? Or should I start a new thread for that one? Can you recomend either fuel type? And I was thinking about the side hung 2300. What are the advantages of the center hung version? Are there any disadvantages other than the conversion required?
 
For details on cam timing, start a new thread for your engine build, Robert is far more up-to-speed about that stuff than I am...I have a hard time adding 1+2! And he'll need the exact "specs" for the cam you will install, as we've discussed time and again here, "specs" and actual measurement of this kinda stuff can be way different! That is why we "degree" the cam at installation!

Nine to one (9:1) compression ratio is a kinda threshold for running minimum 87 octane fuel...not an exact science as every load of fuel ya stick in will vary much more than what the gummint "sez" it is! Ya gotta allow a fudge factor in your tuning unless ya run an adjustable timing control added to a msd/mallory/crane ignition box that let's you dial back ignition timing on the fly.

For my personal use, I own nothing that requires the use of any higher octane fuel than so-called "regular". All my tuning stuff is based upon use of regular. I'll not spend the additional buckage for a few more octane points for street/trail/lawnmower use! For racing service, of course ya gotta use a higher grade/octane fuel and in closed course apps, that will involve using a "clear" fuel today if we're talkin' gasoline and not methanol.

Aftermarket 2300 has a greater "cfm" rating as compared to the oem 2300 side hung units. So potentially is might provide more peak hp. And...ya can't compare the "cfm" rating of a 2v carb with a 4v carb, they are rated completely different!

On the other hand, you are not talking a drag race or circle track motor here! As long as the carb is set up correctly for performance and drivability, you would not see a difference in performance when comparing. But that is based upon both carbs being "equal" in build quality..an oem carb would have to be refurbished to compare to a new 2300 out of the box.

Mounting either carb requires the same attention to detail, no difference at all other than where the fuel inlet fitting is located. If the oem side hung 2300 was originally set up with a mechanical choke linkage on the driver side (above the throttle cable/rod connection point, then that carb cannot be converted to any type of hot air or electric choke.

There were well over 1100 different variations of the Holley 2300 carb manufactured from 1956 thru today! Very few of those are even close to suitable for use on an IH motor based upon all kinds of differences!
 
Ill be placing my order for a side hung 2300 with an elecric choke shortly here. Thank you for all your help.
 
I am actually thinking about tearing apart my 76 s II, 304, wide t19 rust bucket. Not for parts imediately, but because drivers floor is the only one that will hold weight. The "floorboards", wood 2x4s, have rotted under the floors, and I wont replace them. This pos has a brand new napa reman elec. Prestolite napa pn 48 44824. Its for a 304, it wouldnt work on my 345 would it? In place of my 484778091 4002b 41 7? I didnt look for a pn on it before I installed it, and I cant see or feel an id tag. Thats just the pn off the napa box.
 
78ih said:
I think I forgot to mention I have cruize conrol, can this side hung 2300 work with cruize?
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Yes, cruise control will work with any of the throttle arm setups, just like a stocker. That's because we retain the oem ball stud connection point, though the cruise linkage cn work with a stud and clevis connection also.

I'll get back to ya about the distributor after I do some research, I'm "on the clock" right now involved in a major rehab on my neighbor's rental property.
 
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