3.0 to 3.4 engine swap questions...

s t A t i c · 03-21-2006, 10:49 AM

hi everyone, as some of you know i've recently joined the blown HG club. it was already replaced by toyota once so the recall is out of the question. im tired of battling with this engine. I;m looking to do the 3.4l swap so i would like to know:

Pros/cons of doing this.
will it bolt up directly to my automatic transmission?
price others have paid to have this performed(not including engine price)
what other parts do i have to buy to make this work(obviously ecu and wiring harness)?
things i should look out for.

and most of all are there any major problems with the 3.4???

anyinformation would be much appreciated.

i have done alot of searching but im still not quite sure what i need and if it's worth it.

i plan on driving this truck for awhile(atleast a few more years) but cannot afford to drop a ton of money into it, however i am not interested in rebuilding the 3.0 and possibly having trouble with it in the near future again.

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leebee · 03-21-2006, 01:14 PM

check out cebby, hes been working on just that swap. he did post the other day that his hg went out on him.

lee

RustBucket · 03-21-2006, 02:52 PM

One thing I can tell you is that your gas mileage should improve. I owned a 93 pickup with the V6 and it got worse mileage than the 96 T-100 with the 3.4.

s t A t i c · 03-21-2006, 04:13 PM

bump for advice

brandontrek · 03-21-2006, 04:29 PM

Quote:

Originally Posted by leebee

check out cebby, hes been working on just that swap. he did post the other day that his hg went out on him.

lee

cebby has been doing the 1uz-fe into his runner not the 5vz-fe...

and all i can tell you is to search...

Flygtenstein · 03-21-2006, 08:03 PM

I have swapped truck.

Fixing a blown head gasket is cheap and easy.

It will not bolt to your auto, you ought to get the whole drivetrain with engine/tranny.

It is not cheap, easy or cheap.

I got 20 mpg with 33's and 5.29's on the highway.

Do this if you can do it yourself and plan to keep the truck forever.

rockota · 03-21-2006, 08:32 PM

Quote:

Originally Posted by Flygtenstein

It will not bolt to your auto, you ought to get the whole drivetrain with engine/tranny.

Actually, that's not true. It will bolt to the a340H, but the tranny does need some upgrades to handle the power. Checkout TeamShiftPoint for more info on this - he's done a number of 3.4 to a340h swaps. The a340f is a better tranny, but it would require a Marlin adapter to bolt up a tcase that drops on the pass side.

Quote:

Do this if you can do it yourself and plan to keep the truck forever.

Solid advice right there.

s t A t i c · 03-22-2006, 10:30 AM

bump...

hektikwon · 03-22-2006, 02:11 PM

If you have an auto, you will need to mod it or swap in a manual tranny (like me). You can also get the 3.4 tranny but that will require a different xfer case and adapter for 4x4.
Gas mileage will improve.
Bolt up swap but you will need 3.4 accesories like ps pump, vsv's, charcoal canister etc.
Do a search for the swap and you should get some links.
This is my 1st ever swap and I have put almost 10k on it with no problems.

Flygtenstein · 03-22-2006, 09:13 PM

No one has actually seen one of these modified autos in person AFAIK.

I took calls all day on how to make it work. The internals are fundamentally different in size, function and number. Why not use the tranny that comes behind the 3.4? You know, the one made for the 3.4? If you get that far in and think keeping things "stock" is a better idea than using a tranny for the engine, you are nuts.

Marlin sells an adaptor to get a gear drive case behind that tranny. I have owned three of them. Only in the last 3 months have I finally gotten one that is not supposed to leak. Dual cases are easier, you don't have to eliminate the park solenoid.

If you have a 5spd truck and skills, do it in the driveway quick and easy.

If you have an auto, swap engine/tranny, swap to 5 spd, fix or sell that SOB, placed in order of cost.

rockota · 03-22-2006, 11:14 PM

Quote:

Originally Posted by Flygtenstein

No one has actually seen one of these modified autos in person AFAIK.

Actually, that's a good point, Flyg. Though, I do think it can be done. Heck, if JD can make one live behind a 5.0, there's no reason it couldn't live behind a 3.4. But whether or not it's worth it is another question all together.

s t A t i c · 03-23-2006, 05:02 AM

thanks guys. yea ive gotta find a donor first and ill just carry over whatever tranny that has.

s t A t i c · 03-23-2006, 05:05 AM

Quote:

Originally Posted by hektikwon

If you have an auto, you will need to mod it or swap in a manual tranny (like me). You can also get the 3.4 tranny but that will require a different xfer case and adapter for 4x4.
Gas mileage will improve.
Bolt up swap but you will need 3.4 accesories like ps pump, vsv's, charcoal canister etc.
Do a search for the swap and you should get some links.
This is my 1st ever swap and I have put almost 10k on it with no problems.

hektik how hard was the tranny swap? was it the 5 speed behind the 3.0 or from a 3.4?

Flygtenstein · 03-23-2006, 05:48 AM

Quote:

Originally Posted by s t A t i c

was it the 5 speed behind the 3.0 or from a 3.4?

Same thing when concerned with the swap.

s t A t i c · 03-23-2006, 01:42 PM

Alright...found a donor 1997 4runner: 1200 for the engine( 100,xxx miles)
500 for the tranny(automatic) and ecu. however the chevy dealership i work at can get me a motor from a 1998 with 45,xxx miles for the same price. would i have a problem using the 98 3.4l with the 97 ecu and tranny?

does 1700 for all of that seem reasonable?

mt_goat · 03-23-2006, 05:48 PM

[quote=Flygtenstein]
I took calls all day on how to make it work. [quote]

I can testify to that.

mt_goat · 03-23-2006, 05:50 PM

Quote:

Originally Posted by hektikwon

Bolt up swap but you will need 3.4 accesories like ps pump, vsv's, charcoal canister etc.

Did you try the 3.0 charcoal canister?

mt_goat · 03-23-2006, 05:53 PM

Quote:

Originally Posted by s t A t i c

Alright...found a donor 1997 4runner: 1200 for the engine( 100,xxx miles)
500 for the tranny(automatic) and ecu. however the chevy dealership i work at can get me a motor from a 1998 with 45,xxx miles for the same price. would i have a problem using the 98 3.4l with the 97 ecu and tranny?

does 1700 for all of that seem reasonable?

Sounds reaonable to me.

s t A t i c · 03-24-2006, 04:07 AM

no ihavt tried anything yet im not buying anything until im sure it will all work together. does anyone know if i will have trouble with the ecu and engine not being the same year?

mt_goat · 03-24-2006, 06:33 AM

Quote:

Originally Posted by s t A t i c

no ihavt tried anything yet im not buying anything until im sure it will all work together. does anyone know if i will have trouble with the ecu and engine not being the same year?

Yes, according to Mike @ ORS. Read his tech article about the swap: http://www.offroadsolutions.com/technicalarticles.htm

BTW, ORS is where Flygtenstein used to anwser the phone all day, so he knows what he's talking about.

mt_goat · 03-24-2006, 06:41 AM

Quote:

Originally Posted by Flygtenstein

Marlin sells an adaptor to get a gear drive case behind that tranny. I have owned three of them. Only in the last 3 months have I finally gotten one that is not supposed to leak.

Adrian, did you have a problem with one of the newly designed Marlin Adaptors? I got one of the new ones about 4 months ago but I haven't put it in yet. Thanks

Flygtenstein · 03-24-2006, 06:57 PM

Thanks Dale.

I have not driven my truck in the better part of 7 months, so the new adaptor is on the shelf. Looks like it ought to work, but I do not have mine in.

SEAN_at_TLT · 03-24-2006, 07:43 PM

The article I wrote on performing a 3.0 to 3.4 swap will be publishing in two installments in Off-Road Magazine, I believe in the June and July 2006 issues which should hit newsstands fairly soon. There will be lots of pictures and detailed tech. The truck I did was a 5-speed already so that made it easier but as far as the rest of the swap EVERYTHING is covered in detail including the battery relocation, charcoal canister, air filter, cruise control and even the tachometer fix. Once the magazine article publishes we will republish on the TLT website with large color images and even greater detail.

It's a fairly simple swap but like Adrian said, only go for it if you plan to DIY and keep the truck for a loooong time. Also if you are anything less than a wiring genius pay the money for a custom ORS wiring harness, it will save you countless headaches!

hektikwon · 03-24-2006, 10:30 PM

Static, the tranny swap wasn't hard at all. i used the 3.0 tranny cause it bolted right up and I did all of the 3.4 wiring myself. I also used the 3.4 charcoal canister cause I couldn't figure how to hook up the 3.0 canister correctly.

s t A t i c · 03-26-2006, 07:16 PM

thanks everybody for the replies. could someone that has performed the swap list everythingi will need to pull from the donor, besides the motor, transmission, and ecu? i'm going to get it this week from the local yard and want to make sure i dont have to keep makingtrips back and forth. Thanks

SEAN pm sent

03-21-2006, 01:14 PM	#2 (permalink)
leebee Contributing Member Join Date: May 2004 Location: marlbank, canada Posts: 2,449	check out cebby, hes been working on just that swap. he did post the other day that his hg went out on him. lee __________________ 93 sr5 v6 auto, 4x4 Photos http://s866.photobucket.com/albums/a...albumview=grid there are quite some attractive ladies on here with Toys. (compliments of ironmike) ifsc 3(.0) http://tlca.org www.of4wd.com www.sontt.com

03-21-2006, 02:52 PM	#3 (permalink)
RustBucket Registered User Join Date: Aug 2005 Location: Cumming, GA Posts: 977	One thing I can tell you is that your gas mileage should improve. I owned a 93 pickup with the V6 and it got worse mileage than the 96 T-100 with the 3.4. __________________ Rust-Free '88 Runner. Stay-at-home truck.

03-21-2006, 04:13 PM	#4 (permalink)
s t A t i c Registered User Join Date: Jan 2006 Location: New jersey Posts: 85	bump for advice __________________ 1992 4runner SR5 OME HD springs, OME shocks and struts SDORI BJ Spacers Superwinch Hubs 31" BFG's

03-21-2006, 08:03 PM	#6 (permalink)
Flygtenstein Registered User Join Date: Sep 2002 Location: Fort Collins, CO Posts: 4,246	I have swapped truck. Fixing a blown head gasket is cheap and easy. It will not bolt to your auto, you ought to get the whole drivetrain with engine/tranny. It is not cheap, easy or cheap. I got 20 mpg with 33's and 5.29's on the highway. Do this if you can do it yourself and plan to keep the truck forever. __________________ Ease on down the road.

03-22-2006, 10:30 AM	#8 (permalink)
s t A t i c Registered User Join Date: Jan 2006 Location: New jersey Posts: 85	bump... __________________ 1992 4runner SR5 OME HD springs, OME shocks and struts SDORI BJ Spacers Superwinch Hubs 31" BFG's

03-22-2006, 02:11 PM	#9 (permalink)
hektikwon Registered User Join Date: Oct 2004 Location: NE GA (Between blizzads & hurricanes) Posts: 462	If you have an auto, you will need to mod it or swap in a manual tranny (like me). You can also get the 3.4 tranny but that will require a different xfer case and adapter for 4x4. Gas mileage will improve. Bolt up swap but you will need 3.4 accesories like ps pump, vsv's, charcoal canister etc. Do a search for the swap and you should get some links. This is my 1st ever swap and I have put almost 10k on it with no problems. __________________ 91 4x4 4runna 3.4 , auto to manual tranny conversion, 2" body lift, Aisin manual hub conversion, vinyl flooring, 2nd gen inclinometer, 2.5 Magnalow cat & muffler, Trail Gear Sliders, Bilstein Shocks *Gone but not forgotten 96 4runna Limited e-locked, KC Fogs, 265/70/16 Hankook Dynapro ATm's

03-22-2006, 09:13 PM	#10 (permalink)
Flygtenstein Registered User Join Date: Sep 2002 Location: Fort Collins, CO Posts: 4,246	No one has actually seen one of these modified autos in person AFAIK. I took calls all day on how to make it work. The internals are fundamentally different in size, function and number. Why not use the tranny that comes behind the 3.4? You know, the one made for the 3.4? If you get that far in and think keeping things "stock" is a better idea than using a tranny for the engine, you are nuts. Marlin sells an adaptor to get a gear drive case behind that tranny. I have owned three of them. Only in the last 3 months have I finally gotten one that is not supposed to leak. Dual cases are easier, you don't have to eliminate the park solenoid. If you have a 5spd truck and skills, do it in the driveway quick and easy. If you have an auto, swap engine/tranny, swap to 5 spd, fix or sell that SOB, placed in order of cost. __________________ Ease on down the road.

03-23-2006, 05:02 AM	#12 (permalink)
s t A t i c Registered User Join Date: Jan 2006 Location: New jersey Posts: 85	thanks guys. yea ive gotta find a donor first and ill just carry over whatever tranny that has. __________________ 1992 4runner SR5 OME HD springs, OME shocks and struts SDORI BJ Spacers Superwinch Hubs 31" BFG's

03-23-2006, 01:42 PM	#15 (permalink)
s t A t i c Registered User Join Date: Jan 2006 Location: New jersey Posts: 85	Alright...found a donor 1997 4runner: 1200 for the engine( 100,xxx miles) 500 for the tranny(automatic) and ecu. however the chevy dealership i work at can get me a motor from a 1998 with 45,xxx miles for the same price. would i have a problem using the 98 3.4l with the 97 ecu and tranny? does 1700 for all of that seem reasonable? __________________ 1992 4runner SR5 OME HD springs, OME shocks and struts SDORI BJ Spacers Superwinch Hubs 31" BFG's

03-23-2006, 05:48 PM	#16 (permalink)
mt_goat Contributing Member Join Date: Nov 2002 Location: Oklahoma State Posts: 8,916	[quote=Flygtenstein] I took calls all day on how to make it work. [quote] I can testify to that. __________________ ~Dale~ 93 4X4 ext-cab, auto, SR5, 3.4 V6, supercharged, 2.1" pulley, URD fuel mods, Aquamist WI, IPT valve body mod, dual cases, 4" superlift front, Alcan springs rear, 33 BFG MT, ARB locked front & rear, 5.29 US Gears, RB 1" Body Lift, 1.5" ball joint spacers, manual hubs, TJM T-17, Warn m8000. Last edited by mt_goat; 03-23-2006 at 05:52 PM.

03-24-2006, 04:07 AM	#19 (permalink)
s t A t i c Registered User Join Date: Jan 2006 Location: New jersey Posts: 85	no ihavt tried anything yet im not buying anything until im sure it will all work together. does anyone know if i will have trouble with the ecu and engine not being the same year? __________________ 1992 4runner SR5 OME HD springs, OME shocks and struts SDORI BJ Spacers Superwinch Hubs 31" BFG's

03-24-2006, 06:57 PM	#22 (permalink)
Flygtenstein Registered User Join Date: Sep 2002 Location: Fort Collins, CO Posts: 4,246	Thanks Dale. I have not driven my truck in the better part of 7 months, so the new adaptor is on the shelf. Looks like it ought to work, but I do not have mine in. __________________ Ease on down the road.

03-24-2006, 07:43 PM	#23 (permalink)
SEAN_at_TLT Registered User Join Date: May 2004 Location: USA Posts: 752	The article I wrote on performing a 3.0 to 3.4 swap will be publishing in two installments in Off-Road Magazine, I believe in the June and July 2006 issues which should hit newsstands fairly soon. There will be lots of pictures and detailed tech. The truck I did was a 5-speed already so that made it easier but as far as the rest of the swap EVERYTHING is covered in detail including the battery relocation, charcoal canister, air filter, cruise control and even the tachometer fix. Once the magazine article publishes we will republish on the TLT website with large color images and even greater detail. It's a fairly simple swap but like Adrian said, only go for it if you plan to DIY and keep the truck for a loooong time. Also if you are anything less than a wiring genius pay the money for a custom ORS wiring harness, it will save you countless headaches! __________________ -Sean Trails Less Traveled

03-24-2006, 10:30 PM	#24 (permalink)
hektikwon Registered User Join Date: Oct 2004 Location: NE GA (Between blizzads & hurricanes) Posts: 462	Static, the tranny swap wasn't hard at all. i used the 3.0 tranny cause it bolted right up and I did all of the 3.4 wiring myself. I also used the 3.4 charcoal canister cause I couldn't figure how to hook up the 3.0 canister correctly. __________________ 91 4x4 4runna 3.4 , auto to manual tranny conversion, 2" body lift, Aisin manual hub conversion, vinyl flooring, 2nd gen inclinometer, 2.5 Magnalow cat & muffler, Trail Gear Sliders, Bilstein Shocks *Gone but not forgotten 96 4runna Limited e-locked, KC Fogs, 265/70/16 Hankook Dynapro ATm's

03-26-2006, 07:16 PM	#25 (permalink)
s t A t i c Registered User Join Date: Jan 2006 Location: New jersey Posts: 85	thanks everybody for the replies. could someone that has performed the swap list everythingi will need to pull from the donor, besides the motor, transmission, and ecu? i'm going to get it this week from the local yard and want to make sure i dont have to keep makingtrips back and forth. Thanks SEAN pm sent __________________ 1992 4runner SR5 OME HD springs, OME shocks and struts SDORI BJ Spacers Superwinch Hubs 31" BFG's

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