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Vh41 Vs Vh45

T04GTR

By T04GTR,
in Engines & Forced Induction

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Cubes Grand Master

Cubes

Posted
Posted

Oh a very interesting bit of info here..

3.I have a friend who is transplanting a VH41 into a Sylvia now 4wd. The VH41 came out in a 4 wd at some point and some have sumps with diff mountings and a whole through the sump for a trans axle. I have been following his progress, and whilst things are tight it is coming together neatly. The back of the engine is about an inch from the firewall and he seems to have fabricated a neat header exhaust system. You are quite right we are right hand drive down here which has its own set of challenges when modifying.

VH41 Twin turbo GTR/GTS4.

Would be quite interesting. :P

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aDrew_C Enthusiast

aDrew_C

Posted
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Yes here is the thread with the basics:

http://www.nissanv8.com/viewtopic.php?t=11

As you can see the earlier engines were the over-engineered ones, with the cost cutting occurring later on. Early Vh45's are apparently fine with the exception of their worse designed ports and the minor thing of the plastic timing chain guides... Althought apparently later VH45's solved this, and used oval intake ports. Would look like that's the better option then. Just don't go for one of the '96 and later ones.

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  • 11 years later...
T04GTR Grand Master

T04GTR

Posted
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Posted
On 4/8/2007 at 10:35 AM, T04GTR said:

hey guys im just doing some research. whats better the 41 or 45? whats the bore/stroke of each. wichone comes with titanium valves etc etc.

whats factory redline for each?

lol.... 12yrs later, ive come full circle.  doing the same research... vq killing my life

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30ed32 Enthusiast

30ed32

Posted
Posted

12 year revival from the OP, that's a good effort.  I put a vh45 in a 350z and abuse it all day long but it's only NA.  From the vh45 community I know a lot of the drifters suffer from oil starvation issues at high rpms / being sideways.

I haven't read your thread in a while but I do recall some issues with your vq.. hope I didn't make a mistake putting a vq in my 180, anyway as others have suggested the vk may be a better platform.

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  • 1 year later...
T04GTR Grand Master

T04GTR

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On 3/5/2019 at 9:03 PM, 30ed32 said:

12 year revival from the OP, that's a good effort.  I put a vh45 in a 350z and abuse it all day long but it's only NA.  From the vh45 community I know a lot of the drifters suffer from oil starvation issues at high rpms / being sideways.

I haven't read your thread in a while but I do recall some issues with your vq.. hope I didn't make a mistake putting a vq in my 180, anyway as others have suggested the vk may be a better platform.

yes, well the vq35hr is a gun engine, but im abit greedy. from my own personal experiences, about 800whp is the "reliable" limit for a stock block with rods and pistons and a good ecu. 900-950 and it starts flexing the liners to much and head gasket sealing is a problem.
got some sleeves for it to fix that problem. and the precision 88mm pro mod turbo will need that...

i have a vk45de ready to put together,  the 41awd has always been a idea i wanted to play with. but for what i am planning EVERYTHING needs to be changed. but, the 41 is an oddball thing. head gaskets, cams and the rocker arm issue with big cams is a problem. that, and they just dont exist much anymore. same for the vk45de really.
but, the vk shares alot of bits with the vk56, so aftermarket support is better. im torn between the 2.
the blocks are comparable in strength, the vk head is alot better. but the vh has a diff already mounted. but it would have to be moved forward.
vk head gaskets are mls, and easy to find. all the valve gear is vq, so easy and reliable to 8500rpm. and its a narrower engine. but is just ugly... expensive and silly decision for a looks thing. i dont know...

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KiwiRS4T Grand Master

KiwiRS4T

Posted
Posted
5 hours ago, T04GTR said:

yes, well the vq35hr is a gun engine, but im abit greedy. from my own personal experiences, about 800whp is the "reliable" limit for a stock block with rods and pistons and a good ecu. 900-950 and it starts flexing the liners to much and head gasket sealing is a problem.
got some sleeves for it to fix that problem. and the precision 88mm pro mod turbo will need that...

i have a vk45de ready to put together,  the 41awd has always been a idea i wanted to play with. but for what i am planning EVERYTHING needs to be changed. but, the 41 is an oddball thing. head gaskets, cams and the rocker arm issue with big cams is a problem. that, and they just dont exist much anymore. same for the vk45de really.
but, the vk shares alot of bits with the vk56, so aftermarket support is better. im torn between the 2.
the blocks are comparable in strength, the vk head is alot better. but the vh has a diff already mounted. but it would have to be moved forward.
vk head gaskets are mls, and easy to find. all the valve gear is vq, so easy and reliable to 8500rpm. and its a narrower engine. but is just ugly... expensive and silly decision for a looks thing. i dont know...

I guess you mean VH 41 etc where you put VK41, 45.  I read up about the differences a few years ago and can't remember the details but there was some reason why the VH41 engine was a better starting point even if you increased the capacity.  There seem to be some parts such as forged pistons etc for sale in the US.

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