weaselman

i have a 86 22re with a serious knock. (just replaced crank and rod bearings)
i also have a 87 22ret (turbo)

my question is how do you think it would run if i took my 86 intake and injectors and exhaust and put them on this 87 turbo block, with of course blocking the oil passage that goes to the turbo.

would it run like crap? or would it run normal/okay?

the reason i dont want to just swap the whole turbo motor. is the simple fact i dont feel like swapping a wiring harness, gauge cluster, etc.

and i get in enough trouble without a turbo. lol

FVa7G

abecedarian

uh... what?

weaselman

i have a block from an 87 turbo motor without the turbo and intake and exhaust. just a head and block.

how do you think it will run if i put on my 86 non turbo intake and exhaust.? i kno the compression ratios are different. but would it still run good?

toyota4x4907

https://www.yotatech.com/forums/f116...-turbo-183035/

weaselman

thanx. so from what i read.

it basically is not a good idea becuz it wont run right.

thank you. thats all i was curious about.. looks like i am doing a turbo swap.

abecedarian

The turbo engine has a lower compression ratio than the 22re. You can remove the turbo but the ECU won't have the proper maps to adjust the fuel and timing properly to compensate for the lack of turbo at various rpm's and throttle positions. Using the non-turbo intake and exhaust will work and the engine will run, just not as good as you'd hope it would.

Dirt Driver

You *can* run a 22RET longblock with 22R-E peripherals, but it will be far from optimal. The RET likely has a more aggressive low-end timing table to compensate for the low compression. Without the turbo and lower timing of the 22R-E ECU, it will make even less power than a 22R-E and be a real slug.

abecedarian

Yup.
I have a motorcycle, a Honda CX500-TC which is an ~500cc v-twin with about 7.2:1 cr... the same basic engine as a CX500 but fuel injected and turbo'd. A stock CX500 will take me up off the line up til about the 2nd gear shift but by then I'm blowing by them thanks to nearly 2 times more horsepower when I get boost. I'm slower off the line because of the lower compression (almost 2 points lower) but make up for it in spades once I hit 19+ PSI boost above 4k rpms. I just loose a little acceleration in lower gears because they wind out so fast and have to be in 2nd before anything becomes apparent. Heck, a 'vette will pull about a car length on me off the line but by the time I hit 3rd the 'vette is clamoring to even be seen in my mirrors.
Now imagine putting the non-turbo'd CX500 engine in my bike: you change the engine parameters (i.e: lose the turbo and increase the compression ratio for instance) and the EFI has no means to adaquately compensate since its limits anticipate the turbo being there.
Performance will be less even with an excellent engine since the ECU expects the turbo to be there, and it's not.

Dirt Driver

I think we are on the same page in that respect.

weaselman

thank you for all the information.

would it make any difference if i was to keep my RE computer(ecu) in the truck instead of the turbo ECU ?

Dirt Driver

I would expect it to run like a regular 22R-E, but with a bit less power.

EDIT: Although I don't why the RET ECU couldn't be used. The fuel is metered based largely on the signal from the air meter, not manifold pressure, so an RET with no boost should still theoretically run right.

weaselman

thank you again. i really appreciate your help.