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1989 pathy vg33 swap


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#1 OFFLINE   Keeyinn89pathfinder

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Posted 15 May 2018 - 01:38 PM

So I've ran into a small issue on my VG 33 swap! I've just about got it ready to drop in my 89 rebuild but I have come across a fskc up I never thought would happen, so the harmonic balancer from the vg30 does not fit the VG 33 and its a 96 motor which meaning the different belt system, should I just send my old harmonic to a machine shop or is there a new setup for the swap!? Any answers!?

#2 OFFLINE   snowboard419

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Posted 20 May 2018 - 05:05 PM

The way most of the guys go about doing the swap is transplanting the crank from the original engine into the vg33. There was a guy a while back making adapters but don't know of anyone currently making them.

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#3 OFFLINE   Slartibartfast

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Posted 20 May 2018 - 08:55 PM

Some good info in here about different options. There was a one-year-only Canadian balancer that would bolt on but it sounds like they're very hard to find. I think some guys just run VG33 accessories with a serp rather than going to all that trouble for V-belts.



#4 OFFLINE   Keeyinn89pathfinder

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Posted 21 May 2018 - 08:54 PM

So I just happen to have my original VG 30 heads and they are almost spotless for the use they've been through..(375k miles) My vg33 was in a rollover so oil came out the top end and the exaughst and it has 160k miles, should I swap the crank and heads from vg30 to the vg33? Should I swap the bearings as well? And will there be a timing issue?

#5 OFFLINE   Slartibartfast

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Posted 23 May 2018 - 12:19 AM

What damage would oil have done to the VG33 heads?

IIRC someone on here used VG30 heads an a VG33 block because they thought it would be easier than swapping the VG30 cams into the VG30 heads. The passages aren't the same and I think they ended up doing some grinding to sorta fudge the difference. Not the way I'd go.

 

I haven't heard of any timing differences between the two motors, except that your '89 VG30 will have square-tooth sprockets and the VG33 will be round-tooth. Make sure all the sprockets (and the belt!) are the same style.



#6 OFFLINE   MY1PATH

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Posted 23 May 2018 - 08:07 PM

The 3.3 pump is superior to the 3.0 pump. (That said the 3.0 pump has kept my family 93 going for 290k on good oil so it is 'good enough' for normal use)
The 3.0 balancer will crack out if you machine it to fit a 3.3 crank.

The producer of the crank pulleys has been under poor health for some time but has every intention of having another production run made when he gets well.
I would have a shop make you a larger aluminum hub that bolts up to the existing pulleys, It does not need to be balanced but the bolts can be upgraded one size for better holding in the softer metal.

Alternatively if someone buys me a lathe and a keyway broach I can make them :)

 


Edited by MY1PATH, 23 May 2018 - 08:07 PM.


#7 OFFLINE   Keeyinn89pathfinder

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Posted 12 June 2018 - 04:50 PM

Update i just got my machine cleaned vg 30 crank succesfully installed into the vg 33! Keeping the front pump and am about to time it up and start dealing everything!!!! I am a bit scared that Im gonna start this motor and its going to throw the crank... Didnt have the money for bearings, rings, etc but there was almost no wear fue to the engine only having around 90k! Can anyone tell me if they have stick a 30 crank into a 33 and had a succesfull outcome! Gotta keep everything as original as posible so no parts have to be messed with!

#8 OFFLINE   MY1PATH

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Posted 12 June 2018 - 07:52 PM

Yes, a 3.0 crank will work in a 3.3. Just use all your 3.0 stuff it's been done many times before.

 

I prefer the 3.3 pump because it flows more and I prefer the front mount filter because you don't spill on the starter or risk burning yourself on the header...
BUT my 1993 has 290k on a stock 3.0 pump with 3.0 filter location and the engine has been been just fine over the last 25 years so I think you'll be just fine.



#9 OFFLINE   vagabond

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Posted 15 June 2018 - 09:41 PM

it was either a 01 or 02 Exterra maybe both that has the ps pump and alt in the same location as the 3.0 thatswhat I used when I id my swap






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