Carbureted F22A all wheel drive rat rod

[Jarrett]

For the transmission you could use an H2B adapter and use the CR-V 4WD 5-speed.

[F22Chris]

Wow, Jarrett that's a really good idea sir.

[H311RA151N]

A buddy of mine has been working on something similar, less rat rod, but same concept.

Here is his build thread if you're interested hellraisin. (Hope theres no issues with me linking another forum here)

http://www.hotrodcoffeeshop.com/foru....php?f=6&t=469

Thanks for the link bassrock. Interesting read!

The more ideas I can gather the better.

I'd go fully mechanical if you go the bike carburetor route. I think it would be more easily tunes as well, just drive up a hill and adjust to stop pinging. That's what my buddy did with his 1.8 mk2 Jetta. Thing is fun as hell to drive too.

For some reason I have the desire to eliminate everything electrical from an F22A. It's always been an underestimated engine. Combine that with absolute simplicity, or as simple as it gets and I think it will still have ok power and mpg.

I'm no engineer but I believe the F22A is one of the most reliable inline 4 cylinder engines ever produced. Maybe not the most reliable ( Toyota 22R maybe?) but it's up there. There are videos on youtube of people trying to blow up an F22A by bouncing it off the rev limiter for minutes on end. I have yet to see a video where they didn't have to edit out several minutes because nothing is happening and then they all seem to die of overheating. In one video an F22A even starts back up after cooling down.

Not to mention by simply stripping the engine down to bare necessitates and shaving the valve cover lettering off I'm quite certain it will be masked so well that only serious CB7 and CD5 enthusiasts will be able to identify it. Mystery's are fun.

For the transmission you could use an H2B adapter and use the CR-V 4WD 5-speed.

That idea was passed onto me the other day. It's much simpler as for mating the F22A to a RWD/AWD/4x4 transmission. The only down side I see is making it work with a typical rat rod chassis (ranger/S10 or other) and the cost of the drive-train/adapter. In all honesty I'm ignorant of the CR-V drivetrain. I guess I need to brush up on this a bit.

The good thing is that I'm darn near absolutely sure that the F22A stripped down to the basics with a points or similar style ignition and a carb set up will make less power than stock. So it would be easier on the CR-V drivetrain. Not that a bit more power or the stock F22A would be to strenuous on it, but it's a plus in it's own way I suppose.

Wow, Jarrett that's a really good idea sir.

Agreed.

[F22Chris]

if you have the mini truck diff you can modify the crv axle to fit it right? I'm sure the 6cyl s10 diff can handle 100hp
Also I personally would not use a points style ignition set-up. Just seems a bit of a backtrack in terms of the f22ax being bulletproof like stated. I assume it'll cause idle problems if you get it to work, that along with an untuned carburetor would be annoying imho. But awesome as all hell none the less. Do it. Please.

[deevergote]

The CRV or Civic AWD systems are all you're going to be able to use, due to the counter-clockwise rotation of the engine. Sadly, those AWD systems are not at all performance-oriented. They are very heavily front-biased, with the rear wheels really only driven when the front wheels lose traction. Something tells me you're not doing this so you can drive a rat rod in a few inches of snow or loose sand!

If you want to use any other AWD system with an F22 (or A, D, B, or H), you'll need to reverse the engine rotation. There isn't a single factory AWD system aside from those Honda systems mated to those particular engines that will work with an engine spinning CCW.


Don't fret over the carb stuff... that will be easy enough to find. You just have to be willing to pay the shipping costs from Europe, Asia, or Australia. Should bolt up to the F22A head easily enough. If not direct, then with minimal modification. That's the easy part!

[sonikaccord]

If someone can fit a K head onto an H block...anything is possible

[deevergote]

People have reversed engine rotation successfully in the past. I don't know how to do it myself, and never looked into it seriously... but I'm sure it's documented. Honda-Tech probably has a few nuggets of information.

[F22Chris]

Deev, just in case you're curious.

To reverse the rotation, like in marine engines, you need a modified crank with opposite oil journals, reverse firing order, get special cams unless you just flip the head around, seal replacements for obvious reasons, and alternators and starters need to spin the opposite way.
Now I'm sure I'm missing many things, but I'm a bit drunk right now. There's hella boat forums that do this a lot with 350's and stuff.

[wed3k]

im about to throw this away...

[H311RA151N]

I have been going over this quite a bit recently with a couple people that would be helping me along with this who have built their own rat rods. The crv drivetrain seems to be the best bet for obvious reasons as has been stated in this thread.

The H to B adapter is a great idea.

Wed3k, I'm about to send you a PM on your flange.

[deevergote]

The only good reason for the CRV drivetrain that I can see is the engine rotation. Everything else is essentially worthless. It's hardly an AWD system at all. More like FWD until your front wheels lose traction. I don't imagine it would even be useful at all in a drag launch.

If you're capable of reversing the engine rotation, I'd go with the AWD system from an old DSM. Not the greatest design, but a hell of a lot better than the CRV. I'd imagine that if you're going to put in the effort to make the rat rod AWD, you'd want the system to be effective! (granted, I'd probably just toss a 4G63 in there instead of the F22... but I know that's defeating the purpose!)