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Upgrade Carburetor?

 
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Old 02-13-2015, 10:38 AM
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Upgrade Carburetor?

I was getting ready to swap my 88 prelude from carbed to FI but this came to mind the other day and thought I'd ask here first. Can the Prelude carburetor be upgraded to a performance carb?
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Old 02-13-2015, 11:32 AM
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Re: Upgrade Carburetor?

Yes, but it's not just a simple swap. It could easily turn into more work that just converting to fuel injection. The dual carb system on a 3rd gen is very complex. It's not simply a matter of swapping a new carb on, like you would do on a small block Chevy or something. There are no aftermarket carbs for 3rd gens, so anything you would do would be custom. And may even require that you fabricate a new intake manifold. It's been done, but it's a lot of work.
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Old 02-13-2015, 12:29 PM
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Re: Upgrade Carburetor?

There aren't any adapter plates huh? On Chevys and other carbureted cars, there are adapters to go from Square Bore to Spread Bore and vice versa...
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Old 02-13-2015, 01:24 PM
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Re: Upgrade Carburetor?

Everybody went FI so there's no market for folks like Barry Grant or Holley.
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Old 02-13-2015, 01:32 PM
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Re: Upgrade Carburetor?

There's a lot of support for those engines, mostly because they've been in production for decades. There are literally millions of small block Chevy's still in use today. So it makes sense to have a large aftermarket support. The b20a3 was in production for 4 years. And there weren't really that many of them sold in comparison to more supported makes. And for whatever reason, Honda designed the PGFM-CARB system to be as complex as it could possibly be for the time. As far as I know, there was never really any aftermarket support for upgraded carbs for 2nd or 3rd gen Preludes. There just wasn't enough of a demand for that, and wasn't cost effective for manufactures to produce.
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Old 02-13-2015, 02:21 PM
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Re: Upgrade Carburetor?

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Originally Posted by bykfixer View Post
Everybody went FI so there's no market for folks like Barry Grant or Holley.
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Originally Posted by luzer View Post
There's a lot of support for those engines, mostly because they've been in production for decades. There are literally millions of small block Chevy's still in use today. So it makes sense to have a large aftermarket support. The b20a3 was in production for 4 years. And there weren't really that many of them sold in comparison to more supported makes. And for whatever reason, Honda designed the PGFM-CARB system to be as complex as it could possibly be for the time. As far as I know, there was never really any aftermarket support for upgraded carbs for 2nd or 3rd gen Preludes. There just wasn't enough of a demand for that, and wasn't cost effective for manufactures to produce.
Yeah, that makes sense...
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Old 02-14-2015, 12:15 PM
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Re: Upgrade Carburetor?

I actually have an idea for this, I'll update this post later on.
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Old 02-14-2015, 06:49 PM
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Re: Upgrade Carburetor?

There used to be adapters to fit twin Webers, but I haven't seen any advertised for some time. Hunt around, and you might turn up something. Of course, then you have to learn to synchronize Webers....
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Old 02-15-2015, 12:02 AM
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Re: Upgrade Carburetor?

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Originally Posted by Jamie View Post
There used to be adapters to fit twin Webers, but I haven't seen any advertised for some time. Hunt around, and you might turn up something. Of course, then you have to learn to synchronize Webers....
Do you know this for a fact? I know there are some who have made their own, but have never heard that anyone ever made these. Can you provide any more information about these adapters? Like who made them, and where they were available. I know a lot of people have been looking for something like this, and if we can find any information about them maybe we can find someone to produce these.
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Old 02-15-2015, 09:24 AM
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Re: Upgrade Carburetor?

I googled 'weber carburator adapters, prelude' and saw several old threads but didn't read any. Seemed like the crx was where the interest was some 10 years ago (at a glance, like I said).

Their site has adapters...but for no Honda cars. Seems a company called Redline distributed the adapters.


Sites like red pepper racing, honda roots or this old honda have lots of tips and sources as well as links galore. But interest and info for the 3rd gen carbs seems to be rare as hens teeth..now 2nd gen stuff is another story.

I've been trying to track down if the accord carbs would work on the prelude engine. It seems as though there was a B18 something or other for the accord that was a de-stroked B20 from the prelude. But each thread I read resulted in reading a buncha folks calling each other names or worse.




All I can say is "happy hunting sir".
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Originally Posted by ogsmakdade View Post
welcome to site Carl
...is a golden car fax kinda like a golden ticket? Sure hope willy wonka didn't put any snozberries in your motor.
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Originally Posted by elspectro29 View Post
Only seen the first one, 15 years ago in theaters. Plan on keeping it that way. Get off my lawn.
Quote:
Originally Posted by Lindso View Post
I remember my first thread, asking what a noise was when I got going 110mph.
Pretty much got flamed for driving like a jackass and was told to slow down. And I'll be damned, slowing down fixed it.

God's Not Dead

Last edited by bykfixer; 02-15-2015 at 03:58 PM.
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Old 02-15-2015, 09:41 PM
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Re: Upgrade Carburetor?

Quote:
Originally Posted by luzer View Post
Do you know this for a fact?
Yes, I do. Unfortunately, the two companies I know did this are both long out of business, so no help there.
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Old 02-16-2015, 11:19 AM
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Re: Upgrade Carburetor?

Quote:
Originally Posted by bykfixer View Post
I've been trying to track down if the accord carbs would work on the prelude engine. It seems as though there was a B18 something or other for the accord that was a de-stroked B20 from the prelude. But each thread I read resulted in reading a buncha folks calling each other names or worse.
I wondered this back when I had my first carbie lude, but the only Accord carbs I found were downdraft carbs not sidedraft. I didn't do an exhaustive search on this, so maybe I was looking at the wrong generation. But I just assumed they would all be downdraft style so I quit looking at them.

Jamie, can you list the names of these companies? It wouldn't hurt to know these if someone wanted to do some research. Someone may have posted some pics or info for these somewhere. You never know what's out there till you look.
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