Hey y'all. I just moved from sea level to a town that sits at 8,500 feet. How do I adjust the Hitachi carburetor for altitude? Is it that screw on the base of the carburetor with the little spring attached to it?

 

Thanks!

Hey y'all. I just moved from sea level to a town that sits at 8,500 feet. How do I adjust the Hitachi carburetor for altitude? Is it that screw on the base of the carburetor with the little spring attached to it?

 

Thanks!

 

You can try that, but 8,500 ft is a big jump. You'll have to re-jet the carb to do it right and even then it won't have much power. I'd definitely recommend a manual choke Weber swap jetted for altitude if you can swing the cash.

Would I need a different intake manifold for a Weber, or do they bolt right on? Also, what about all that other crap that works with the Hitachi to make it fuel efficient and emissions compliant?

Would I need a different intake manifold for a Weber...

 

Nope!

 

...or do they bolt right on? ...

 

No, You'll need an Adaptor; there are Two that works on the EA82 intake, I've Worked with Both.

 

More info Here: http://www.ultimatesubaru.org/forum/showthread.php?t=74206

 

Kind Regards.

The cars originally sold with a 'high altitude package'. Mine came with it. I don't know what all it entailed.

Weber!

I definitely recommend the weber. the pieces can be found to set the hitachi for the higher altitude....but all in all the stock system will crap out on you sooner or later. not the carb itself really, but all the doodads that tie into it fail. and trackin down the quirks is a waste of time.

and there's more power to be had from the weber as well

what about fuel economy? i've heard that hitachis are better on gas than webers. i suppose the real solution to this problem is a fuel injection, but what a nightmare all the wiring would be!! i've been inside the dash, when i had to replace the heater core, and it doesn't seem like fuji heavy industries really intended for people to get inside that dash. like i said, nightmare!

... i've heard that hitachis are better on gas than webers...

 

Not Exactly, let me Explain:

 

My BumbleBeast Weberized EA82 Obtains almost the Same Fuel Economy with the Weber as it was New with the Hitachi, the only times when the Weber Swallow more Gasoline are when you Use for Long time the Secondary stage unnecesary.

 

Kind Regards.

what about fuel economy?

Fuel economy is going to suck no matter what at 8,500 ft. FI is better, but even that is greatly affected by the elevation.

 

You are going to want the progressive secondary of the Weber to pull up hills at that elevation. I am assuming we are talking about Colorado or somewhere nearby, where there are long steep stretches of road.

 

With the stock set-up your running start will get you about half-way up the hill, then you will have to down-shift and fart your way at half-speed to the top. Meanwhile trucks and other cars will be accumulating behind you. You will get tired of it.

 

Here's a link to the standard 32/36 DGEV. I would recommend going with a manual choke at 8,500 ft rather than the electric, but the electric will work too. If you are not in a hurry you can find used one's cheaper, but for the money I think it's worth buying new.

 

http://www.carburetion.com/after.htm go to conversion carbs you want kit K731

 

http://www.ebay.com/itm/Subaru-1985-1987-1-8L-OHC-EA82-Weber-Carb-Conversion-/330622469602?hash=item4cfaa285e2&item=330622469602&pt=Motors_Car_Truck_Parts_Accessories&vxp=mtr

 

[Of course if you are talking about Tahoe or the Sierra's then I don't think you can run the Weber legally. You will have to keep the Hitachi to pass emissions.]

Edited November 10, 201114 yr by ferox

Thanks!

Hey y'all. I just moved from sea level to a town that sits at 8,500 feet. How do I adjust the Hitachi carburetor for altitude? Is it that screw on the base of the carburetor with the little spring attached to it?

 

Thanks!

 

Hey,

 

I have an 87 carbed wagon from Colorado that I removed the "high altitude kit" from. That's what you need if you attempt it with the Hitachi.

 

High Altitude Kit

 

hth

 

Doug

 

If you search ebay for "Subaru High Altitude Kit" you'll find this.

 

And no, I'm not suggesting you buy it, just FYI.

 

Doug

Edited November 12, 201114 yr by Quidam