question about 20r/22r

[cavemancaleb]

Yes I have read over the link about 20/22r hybrid in the FAQ

I am looking at a 1984 xtra cab and the seller has installed a 20r head on the block. He has some sort of adapter installed in order to run the 22r carb with the 20r intake. He hasn't started it since the build and none of the vacuum lines for the carb are installed. It turns over and has 103+ compression on each cylinder. He says all it needs to run is the vacuum ports on the carb and intake plugged and the distributor cannot be adjusted due to the power steering pump brackitry in the way so this needs to be solved.

I have a few questions

Will the fact that the distrubotor cannot be fully adjusted effect the timing enough that the truck wont run?

Can i really just plug the vacuum ports on the carb and intake and it will still run, ignoring the emissions factor?(I live in SD and dont have to worry about emissions)

Any questions regarding the 20r/22r hybrid design i should ask him?

Your help is much appreciated.

 

[Hilux]

I THINK I didn't even have the holes drilled in my head for the PS bracket, but I still did it fine with the 22R bracket...

that's new to me... Maybe he's got a car one on there or something... Take a pic for us.

Don't ask me about "un-corking" or doing away with vac lines... I leave well enough alone and don't have enough sense yet to know if removing 1, 2 or all of them will effect anything else.

If ya had to, I'd say just get a hotter coil after that to burn as much fuel as it can before it leave the chamber...

And you want the 22R carb so don't worry about an adapter.

 

[2ndGenToyotaFan]

103 psi? I thought the point of the 20R head was to bump up compression?.... 103 on any other engine would be rebuild time...

My 22RE Tests at 150-170ish...

 

[Hilux]

Yeah, IIRC my hybrid was around 150 - 170...

it wasn't yesterday I checked it though...

 

[cavemancaleb]

i might be mistakin on the compresion.

I will double check on that and get a pic of the power steering bracket

 

[Offroads4x4]

Toysport built the first 2400 cc. 20R, these evolved in the 20/22R hybrid engines, in the later years when the 22R engine was introduced in 1981. The 20R head holds a distinct advantage over the 22R / RE heads, it flowed better. The availability of big valves extended the tuning potential for the 20R (and all the other engines).

If you want to know what works with what look here from TRD Guys.

22R Tech Notes

If I recall use a 22R or RE PS bracket and problem solved with the dist.

 

[cavemancaleb]

Toysport built the first 2400 cc. 20R, these evolved in the 20/22R hybrid engines, in the later years when the 22R engine was introduced in 1981. The 20R head holds a distinct advantage over the 22R / RE heads, it flowed better. The availability of big valves extended the tuning potential for the 20R (and all the other engines).

If you want to know what works with what look here from TRD Guys.

22R Tech Notes

If I recall use a 22R or RE PS bracket and problem solved with the dist.

so the problem with the distributer should be able to be solved with a 22re bracket then. sweet.

 

[85+92]

is 84 even a tall deck block?
I thought 83 was the last year?
doesnt the hybrid need to be on a tall deck?


if /\ thats not an issue, as far as vacuum lines go keep the ones for the distributer advance everything else can go for the most part obvisouly you need the bigger lines...IE brake booster and PCV

 

[Hilux]

84 is a tall deck block.


Remember, if it's not a Laser block, it's a tall block.

 

[85+92]

ahh..i c

carry on

 

[Hilux]

He could have 22R low deck pistons (almost flat-top pistons) in it though...

You never know what you get with PO's. They've been around long enough to have all types of ppl that think they know how to work on them.

I know. I've seen it all!

 

[4x4 Station Wagon]

The one I have seen the most often is people hating this swap!! The reason they hate this swap is because they go through headgaskets like MOST people change their underwear......... BUT the problem was they were trying to run the 20r headgasket instead of the 22! I ran this set up for several years and it was sweet. As for the carb I have seen it done. I watched a guy tear everything possible off of a carb and totally canibolize it unknowing what was going to happen (might have even wired linkages I can't remember). THE THING RAN SWEET.... but I really do not know if I could mimic it again so i have never tried. Moral of my story is that it can be done.

 

[WristPin]

all red flags.

esp the 103psi

you can make the ps work

you must be able to time it i dont care if you got a rocket engine for a coil.

you could rip off the carb and put a weber on there

or you you just buck up and slap a 22RE in it

 

[cruiser88]

Weber is a must......talking about opening a motor up