There's also a link to a nice engineering analysis of the QR25DE in the What's the best engine article.

In most ways it is superior to the SR20 and the CA18: lighter, more powerful, etc. It replaces both of them!Quote:

I have been looking at one of these for a customer for nearly a year.

Apart from plasticine rods and very small low friction bearings, thin rings and light pistons it may make a good road engine,but a lot of work would be needed to make them a race engine with any degree of reliability.

I think they are analogous to the dreaded CA20(boat anchor)for race use at present, without a lot more development. Notice the turbo version has not appeared yet!

The VQ35 in the Z is just the opposite with an essentially very strong design and a great potential for a race engine.

Any one got one spare ????

The v6 is a beauty but the suzuki v6 as used for the pikes peak and vitara for a long time is no slouch either and came out much earlier. Should see the size of the ports and lightweight strong design.
check the bottom of this page
http://www.billzilla.org/starleteng.htm

So even though the nissan vq35 is nice I have to give the credit to volkswagen (yes I hate golfs!!) with their amazing vr6 2 cam 16valve engine with single head a-la early lancia v4 layout its a revolutionary engine which I wish nissan made a v4 from.
http://autozine.kyul.net/technical_school/engine/tech_engine_packaging.htm
It uses almost halve the parts!!!!

Also theres a v5 20 valve version and honda has a 200hp 990cc v5 as well on this....
http://max-biaggi.tripod.com/id22.html

D, that autozine website is great

Not 2 shabby for a honky editor

Hey how bout that vr6 v6!!!?

Yeah I know I know theres so much other stuff to look at....