22R + Weber carbs... what are you experiences wheeling with them good-bad

[Paul G]

Howdy folks first post , doing a bit of research on a mini truck that caught my interest. I was wondering what the consensus was with folks that have come across or driven rigs with Weber carbs. My secondary question is, how difficult is it to drop a EFI system completely removing the carb setup?

 

[pappy]

Hi Paul, You're going to have a lot better luck in the 95 and older truck forum:

Moved.

Howdy folks first post , doing a bit of research on a mini truck that caught my interest. I was wondering what the consensus was with folks that have come across or driven rigs with Weber carbs. My secondary question is, how difficult is it to drop a EFI system completely removing the carb setup?

Searching for the Weber will give you plenty of opinions, though folks will most likely chime in. My opinion is the AISIN carburetor is a far superior unit and I don't know why somebody would swap out to a Weber.

EFI has been done. More information on what you are looking at would help. In general, I would recommend sourcing a complete 22RE, then figuring out how to wire it up. I suspect the newer the truck you are working on (1985+) the easier it would be. That said, if you are going to go through all the effort, you might want to start searching on 3RZ transplants. There is a lengthy thread at Marlin Crawler Forums that is useful.

 

[Paul G]

Thanks for moving the Pappy, The truck is an 84 regular cab with a 22R. I think they were just trying to improve from a stocker carb thats why the Weber came into play. Talking to a few folks tell me that the main reason they all have 22RE was they wanted to stay away from carb type engines, and that it acts funky when off camber or long hill climbs? Is this the common experience for most? Will try and search for Weber and hope to get more info that route. But appreciate any info ya'all can provide.

 

[tgreco]

I switched from the stock Aisin to a Weber 32/36 a few years into owning my ‘81 22r as I could never get it tuned right. While I had better luck tuning the Weber, it was terrible offroad. Mine has turned into a pretty dedicated wheeler and we generally are hitting pretty tough trails. Depending on your wheeling style, my experience may or may not be relevant to you. The biggest problem I had was that it would want to stall on steep uphills or when bouncing trying to make it up an obstacle - exactly when you don’t want to lose power. It put me in a bad spot a couple of times. I tried some of the carb mods to help and none of them really helped.

I’ve since gone to propane and couldn’t be happier. You probably won’t be terribly satisfied with propane if you street it a lot unless you have an easy place to fuel.

If it were me I’d be looking for a post-96 truck with the newer motors. Don’t get me wrong as I have and love the older trucks, but I think you’d be money ahead if you’d go with a post-96 and get a newer motor with fewer miles for probably less money (especially if your after efi). If you want a dedicated trail truck and thus the solid axle, then buy it and go straight to propane.

Good luck!

 

[H8PVMNT]

I was a die hard aisan carb fan but last year I tried a Weber 32/36, but I did the hill climb mod before even installing it. I have been happy with the amount of tuning I can do a it climbs and descends just as well as the aisan. I ran the vent overflow to a charcoal canister so it absolutely will not flood.

With the aisan you get a good off road carb that can be tuned a little to improve street performance, with the weber you get an excellent street carb that can be modified to off road just as well.

I don't think either are a bad choice.

Here is a thread of my weber experiences and a lengthy thread tweaking with the aisan...

H8PVMNT Wrestles a Weber

H8PVMNT's Aisan 22r Carb Tech /Study

 

[CreeperSleeper]

I was able to modify a Weber 32/36 to run really well on angles. However, it was still a carb. Have you considered propane? I love the propane conversion on my 22R.

 

[yotadude520]

If I were you, I'd stick with the stock Aisin carb. They're stout and when in good shape the truck will run well. If you're planning doing a lot of crawling, I just lowed my float by .5mm and it does awesome on angles.