91yota3.0

i have a 91 toyota v6, the engine blew head gasket, so i just bought a 3vze from a 94 toyota 4x4 auto, i was looking at the engines and noticed the 94 block doesnt have the oil cooler on it, it just has some kind of cover where the oil cooler would be, does anyone know what the differences are between the two engines

DeathCougar

iTrader: (23)

is the new engine 4wd the same as yours? (or 2wd, whichever it is)

The fan support is different as well. In 93 they switched to a hydraulic timing belt tensioner, thus requiring different heads and front fan support.

Of course the wiring harness and other subtle things will be different.

toytech76

Eng is the same, you will just hafta remember if you or anyone else is doing a tbelt to remember what year the motor is since it will take a different belt

toytech76

oh yah...I think the knock sensor will be the newer style so your eng harness won't plug into it. You can however take the sensor from your old eng and install it into your new one. I myself would buy a new one even tho they are spendy. Everytime I rebuild one of these I recommend replacing them because it never fails that you get it all back together and after 2 days you end up getting a code 71 (knock sensor). Insurance against having to tear the intake off again

91yota3.0

alright does it matter that the 94 engine doesnt have the oil cooler on the side of the block, but the 91 did

toytech76

No because the oil cooler has one coolant line to the block and one to the waterpump. Just remember that if you ever hafta replace the w/p. Some come with the nipples and some without

stormin94

They should be pretty much a carbon copy of oneanother.

DeathCougar

iTrader: (23)

eh nope

And you can just switch the oil cooler from your 91 to the 94, you will just need the correct water pump. I would suggest it since it sounds like you have a 4x4, and the engine came from a 2WD

91yota3.0

yea my 91 toyota is a 4x4 and the motor i bought was in a 94 ext cab sr5 4x4

runethechamp

There is an oil cooler on the block of my 94 4runner.

Yoda

For what it's worth, I would change the timing belt and WP before installing the engine (unless you have documentation it was done)

We swapped a 95 engine into a 91 truck. Same issues. We did the belt, WP, and swapped the oil cooler.

bigtrucknwheels

what neck of the woods are you from? Im trying to hunt down an SR5 interior from an Xtra cab... Also looking for a 5 speed if the truck had it. I'd buy it whole...

Thanks, in advance, for the reply.

91yota3.0

the knock sensors are located under the intake manifold, and screw into the block right? think my service manual says there are 2 knock sensors on the 3vze

toytech76

Yes thats where it is. No...3vz only has 1 knock sensor. There are 2 different styles. The early and the late style. The connector is the only difference. You ALWAYS replace the wire between the sensor and eng harness anytime you hafta pull the manifold off. Cheap insurance

toytech76

the 3.4 5vz has 2 sensors

91yota3.0

alright thanks for the help

toytech76

NP! Just ask if ya need anything else

DeathCougar

iTrader: (23)

Is this YOU?

http://seattle.craigslist.org/est/pts/525636708.html

do I smell a 3.4L swap?

91yota3.0

yea thats my motor, was going to put that in my truck for now just to get it running, but changed my mine, want the 3.4 swap have done a ton of reading about it, now thats the route im going to go.

DeathCougar

iTrader: (23)

Very nice! Keep us updated