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General Discussion Newbies and Introduction. Its time to brag about yourself. This section is also for general discussion that is not cover in any other sections. Anything goes.


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  #1  
Old 03-17-2005, 09:00 PM
PaulfromPA PaulfromPA is offline
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Default 1uzfe vs VH45DE

The only information on here that I found similar is: http://lextreme.com/forums/showthrea...highlight=VH45 but that was over a year ago and hopefully people have more opinions since then.

Oh by the way, hello my name is Paul and I'm from Lancaster, PA. I'm just dreaming of the next project car and I'm pretty sure I want to do something with the 1uz or VH45, so any info is helpful. Thanks.

Paul
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  #2  
Old 03-17-2005, 09:12 PM
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Zuffen Zuffen is offline
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Go to http://www.outerlimits4x4.com/PHP_Mo...pBB2/index.php and search under VH45 as quite a few threads discuss the good and bad.

By choice I would go 1UZ on the basis they are cheaper to buy and there's a better parts supply line in place as more 1UZ's have been built.
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Old 03-18-2005, 12:18 AM
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i'd pick the 1UZ for it's superior top end.

scissor gears and non-interference heads make for a true "peace of mind" performer - retarded cams et al.

and they're narrower so they fit in more engine bays.
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Old 03-18-2005, 12:31 AM
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As I stated in the other thread;
Comparing FACTORY setups, the VH4x series have better upper ends.
However, the bottom end isnt strong.

Being that a top end is somewhat cheaper to upgrade, the UZ provides a better base for performance.
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Old 03-18-2005, 12:17 PM
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I'm a Toyota fan really, but I think the Nissan VH45 has a leg up on the 1UZ.

My good friend just destroyed the production car land speed record set by the Nissan Factory Team in a 300ZX (226 mph). He has been flown all over the Western hemisphere tuning Z cars. Certainly an authority. We've spent hours examining the differences between the Q and the 1UZ

The bottom end in the Q45 is 6 bolt like the 1UZ, but the main studs make the 1UZ studs look like tooth picks. It looks like something you would find in a 6-bolt Donavan, Brad Anderson, or some T/F engine. Of course, this is to accomdiate the over-built reciprocating assembly. The crank is forged, as are the rods, and you can clearly see the forging marks, (unlike ours). But, the pistons are considerably heavier, which explains the reason for the beefy bottom end. If I remember correctly the Q's were 30-50 grams heavier. They have a full skirt unlike the T shapes my 1UZ had.

BTW, if you weren't concerned about the weight we could easily use the Q rods.

The heads have a really wide valve angle. You can only see the tops of the valves looking down in the intake ports because they're canted out so much. The cams are independently adjustable (I really don't find this feature that compelling). The valves on the VH41 are titanium. The heads flow good aparently, but have the casting features to be pushed further than the 1UZ.

I'm not down with the cam followers (like on the other Nissans) and this was a little bit of a disappointment for my friend as well. He thought the shim and bucket was far superior until high lift cams were used. Then the casting around the bucket possibly becomes an obstruction.

With all of this said. How come the Q hasn't caught on yet? The 1UZ has already been in the 6's at over 200mph. Where's Nissan? (Insert cricket chirping noises here). Did you look at the engine homologation for the Grand Am series? http://www.grandamerican.com/CONTENT...nes%201-11.pdf The advantage was certainly given to Nissan, not even a question.

By all means the Q45 should be the engine of choice when using conventional means. I think the 1UZ is one of those engines whose whole is greater than the sum of its parts and I'd still rather have the UZ.
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Old 03-18-2005, 10:54 PM
chrisman chrisman is offline
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great post flea..nicely written..
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Old 03-18-2005, 11:50 PM
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Well said..... So, 1UZ does have its own natural enemy or rival. Many 1UZ owners complaint about lack of performance parts support, but Q45 is worst.
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Old 03-20-2005, 02:12 AM
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R33 with a VH45...

http://www.trademe.co.nz/Trade-Me-Mo...n-23230510.htm
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Old 03-21-2005, 03:21 AM
PaulfromPA PaulfromPA is offline
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Thanks for the feedback everyone. There is a lot of new information posted here and in the other forum.

Here's an interesting link: http://www.promotive.com.au/ scroll down and click on the infinity section
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Old 03-21-2005, 06:47 AM
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Great info.... Looks like the Q45 engine is very nice. Performance wise have alot potential.



Comparing the two engines, the 1uzfe will be much easier to swap.

VH45: 710 + 800 +640 = 2150 cm
1UZFE: 660 + 700 + 710 = 2070 cm
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