Macaroni and Cheez

[Edison Carasio]

CARB'D DOHC FTMFW!!!!

So jelly.

[apache07x]

It's a B20A out of an overseas 86 - 89 Accord, Vigor or a 2G lude. Carburetion is achieved by using an A20 intake from a carbureted USDM Accord of the same years along with some other mods. I have a Gold Top B20A for mine that I'm waiting until after the first of the year to put in which will also be carbureted unless I find a 2 door that has FI before then.

[2oodoor]

yeah baby yeah, whats this? macaroni and whats this who put cheese in it, no way? yes way! what a combination! winna winna chickin dinnahhh..
looky here at what another member was working on though....

[apache07x]

yeah baby yeah, whats this? macaroni and whats this who put cheese in it, no way? yes way! what a combination! winna winna chickin dinnahhh..
looky here at what another member was working on though....

Sweet Guy. Give me some details you know that's what I'm wanting to do.

[apache07x]

Guy you got me thinking and scheming now. Hmmmmm I'll post my mock up in a couple weeks. It's a done deal. Glad that dude never showed up to buy my spare intake now.

[Edison Carasio]

I wonder how that carb'd B20 stands up against a FI B20 in terms of power.

[2oodoor]

that one isn't mine Steve but I did miss out on this top piece of a two piece V6 intake I saw at the flea market.. was gone when I came back around to buy it. Would have made a great flange to start with.

[2oodoor]

I wonder how that carb'd B20 stands up against a FI B20 in terms of power.

I wouldn't know since Ive never driven one. It does ok though Im sure it could use some fine tuning.
In comparison though I have had this same set up on an A20 and it did have more low end power than my 87 A20A3 , also had another 32-36 weber on the engine that came out of this LX and it felt more powereful.
Still without dyno there is no documented proof either way right.

This wasn't planned really it just happened to be the easiest way to get the swap going since it was not and LXi, I still have the FI intake manfold that came the engine.

[apache07x]

that one isn't mine Steve but I did miss out on this top piece of a two piece V6 intake I saw at the flea market.. was gone when I came back around to buy it. Would have made a great flange to start with.

Oh okay. I thought maybe it was one you picked up from somewhere or someone. Well I have a good idea on how to make one now after looking at that picture it sent the hamster wheel in my head to spinning off of it's axle.

I'm thinking 4 barrel all aluminum SOLID spacer plate, the kind with 4 holes not open plenum so it has more side meat, holes drilled through it with countersunk allen head bolts to attach it to intake manifold then mark the intake via the spacer holes and see if there's enough meat on the intake to support it. Front to back will not be a problem there is plenty of room I know from experience with the Holley 2 barrel on mine. Side to side does concern me a little if memory serves me right there's not a lot of extra meat width wise since it was a factory 2 barrel but I shall see. Worst case scenario would be to open the plenum up on the spacer after modifying it to bolt to the intake, open the intake up front to back and then side to side kind of make it so it kind of funnels down from the spacer into the intake in lieu of there just being a a flat surface there. Of course this is assuming you can get it to seal up on the intake in the first place which may be a whole different problem that may take some welding and fabrication beyond the scope of my equipment and possibly abilities.

On a side note I'm going to try and have mine Dynoed if the cost isn't too bad when I make the swap. If I can afford to then I'll have some comparison numbers for carbed vs FI.

[2oodoor]

there is a part of a thread on the one I first posted up here, a member named A20A1 was working on it.

[apache07x]

Guy,
Yeah I went and found that thread. Hmmm several different ways one could tackle this I suppose. A custom tubing and sheet metal intake comes to mind right off the bat. However, mocking up the stock manifold with the 4 barrel adapter and having it welded up is probably a better option though? Maybe an FI intake even, although I'd have to look how their setup? I think their a split plenum but the way their split not sure how feasible it would be to make an adapter? Probably be easier to make a dual 2 barrel or 4 barrel setup on one of those? Which I don't want.

[A20A1]

yeah baby yeah, whats this? macaroni and whats this who put cheese in it, no way? yes way! what a combination! winna winna chickin dinnahhh..
looky here at what another member was working on though....

There wasn't enough material on the back of the adapter to bolt it down to the manifold like I did at the front.
Also like Apache mentioned, a 4hole spacer would be better for drilling the bolt holes, I ran out the edge drilling the counter sink for the front bolts.
I would also use Torx head bolts now instead of Allen head.

this looks interesting for my adapter...

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mike89accordLx had a dual intake adapter
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Here was the 4160? and the Q-Jet.
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The Q-Jet would not work without a throttle plate spacer/adapter

[Vanilla Sky]

Have you considered carbs that package better on a 4 cylinder? A pair of DCOEs may be expensive new, but I've found decent sets at swap meets (at Daytona International Speedway) a few times. Hell, I came across a Kawasaki 750 that had a set of good carbs on it for $100. That would have done what you need, and it would package very well behind the engine.

Apachee, I'm just up in Palatka, which isn't too terribly far from Winter Haven, if you're familiar with the area. I can show you how to mount up the motorcycle carbs and give you a cut-down intake manifold that's almost ready for a set of motorcycle carbs. I had cut it down for a Weber setup, but I've since sold off all of my Webers.

[2oodoor]

A20A1 how the heck did you stumble across the mac and cheez? LOL

It seems we should use a hood scoop anyways to make clearance for even the downdraft Webers ! Mine still hits sometimes but the eng mounts are sloppy.
As for four barrels...
A Mercruiser inboard 4 cyl (3.7) uses a quadrajet. To give you an idea of the difference the carb can make, the 3.7 165 HP uses a "Mercarb" which is very close to a 2GV 2 bbl rochester. A 3" heat exchanger is used, exhaust manifold outlet basically.

The 190 HP 3.7, the very same engine set other than a quadrajet and 4" heat exchanger.
25 HP gain...

[Vanilla Sky]

You hit the nail right on the head. If you're going with a big carb, you either need a really thin air cleaner, or you need to break out the sawzall and give that carb some elbow room.

Not to mention every racer I know that's gone from a big 4bbl to a set of Webers has picked up power. One of the locals made the swap on his SBC to triple IDAs and picked up 50HP at the wheels. He ran that setup for a year until it was banned because it made the cars too fast on track to be safe. I figured that's worth mentioning.