20R efi option feeler
 

A couple of local guys are looking at making an intake adapter to mate the 22RE intake to a 20R head. The plans are drawn up, CNC shop chosen, and prototype will be made in about a month. It is nearly a bolt-on deal, but not quite. It will require either some external coolant plumbing or using a drill to open the hole in the head between intake 1 & 2 into the water chambers within. The latter is better and simpler, but requires removing the head to avoid metal shavings in the coolant.

We'll probably do before & after dyno runs to quantify gains.

If it works out, we are looking at selling them for about $225 per kit. Question is, would there still be sincere interest in this idea at this price, or is it just too many years ovedue?

would it also work with an early model 22r?

Really, if most are like me, we'd like a kit that will let it bolt on, and wire up easily as well.

then again its a totally new mod for an engine that is almost 30 years old. i guess it all depends on the area. sounds like a great deal though, good luck!

The 22RE intake bolts onto the 22R heads already, although I believe you need to have a head from a 82 or later to have all the necessary bolt holes. Not completely sure which year, it's whenever the celicas started having analog efi available. Wiring is a separate deal, and I'd guess ORS or painless probably already have plugNplay harnesses.

This is really intended for those running a 20R/22R hybrid that would prefer to upgrade with efi rather than side drafts or a weber 38.

I'v already built a 22r with 20r head with efi and you dont need an adapter by the way it runs great but havent dinoed it i have it in a 89 runner

Did you take the port reshaping route, or go TBI instead of port injectors?

You can't just bolt up the 22RE intake. Even if you don't care about mating square holes to round ones, it won't hold coolant.

Oh, and I have kinda decided not to go forward with this project. Not enough interest out there, even with current gas prices.

Sorry to here that your walking away from this i am jsut getting turned on to it. Is it possible to have you plans sent to me so i can have someone cut up the plate for me?

I was planning on making a rudementary adapter plate with common garage tools but a cnc cut woudl be sweet.

might want to try emailing him...hasn't been active for 3 months

Hooray for thread subscriptions... I'm trying to spend more time in the garage and on trails, less time sitting at a computer.

I don't have the dxf for this, it was done by my friends at www.extremerocrigs.com using a couple of my spare heads & intakes. Shoot them an email. They might just send you the file, or they might rather cut the part themself and sell it. The project sorta died when I lost interest but the drawing was done; I suspect a prototype was never cut.

right on thanks

There is a company that builds a Bosch injection kit for the 20R/22R and Suzuki's:

http://www.zuksoffroad.net/toyota_engine.htm

$245 for the VW/Audi parts, and $429.95 for the rest of the kit just doesn't seem like a good deal, no matter how well it works. It would be much simpler to convert to propane.

How did you do your system
 

I am looking at the same using 93 injection, do you have pictures or instructions?

He's full of crap, went TBI, or he's a ninja fab who pulled off one of these options:
http://home.earthlink.net/~twopapa/toyefi.htm#efi

I'd love this...

I've got 2 RET's though... I guess the q is, doesn't a 20r head flow better than a 22R? And all I have to do is mill he 20R head to fit on the Laser block, right? And is all that worth $225?

this sounds killer for Turbo set-ups...

You could even swap cams between the two if you had to...


Get on the RTE forums and ask... I bet you'll get lots more bites..

It flows better only in the intake. It's the same on the exhaust as the 79-84 22R blocks and probably close to same on the pear-shaped outlet on the lazer block heads. The valves are a little smaller on the 20R head.

What does the compression ratio end up being on a lazer block with a 20R head? If I had one loose I could measure what the combustion chamber size would be after milling, but I don't. What's the diameter of the chamber on a 20R head?

The 20r head myth is just that... a myth. the 20r and 22r/re head all flow super similar numbers so it's not worth the swap. just port your 22r head. kinda like the 5m head on a 7m block (pseudo 6m). flow numbers are a fallacy. i have no idea how these rumors got started but before you go swapping a head and hunt down all the parts to make it work, i would really do some research. don't mean to be rude. just trying to save my toyota brothers some time.