VQ37HR block limitations?

Originally Posted by Orphan

mrmixitup by all out do you mean just a stand alone ecu and wideband etc or do you mean a full bottom end build? If the bottom end build will you be keeping the 11.0:1 CR? Honestly from what i've seen if you can tune the factory ECU its better as you can retain factory features and past Nissan ECU's have been very easily tuned so I guess we will just have to see what comes out to tune it with. I'm sure NisRom or whatever will have a set up for the VQ37HR soon enough. Stand alone starts to get ahead when it comes to additional sensors or extra maps etc as most factory ECU's haven't been designed to expand on what they come with stock. I can't see any reason why the factory ECU wouldn't be fine for most builds not to mention save you the $2k for a good stand alone unit. I know older nissan ECU's can be made to work with a wideband so I would assume it should be possible with the VQ37HR as well.

Based on the internals from previous Nissan engines I would say 500rwhp would be about the safe maximum which is still pretty impressive, it means that 95% of people will be able to get their goals on the stock block.

I wonder what results will be had once people start fooling around with the VVEL on the intake cams, its a shame they didn't bother to put any valve control system on the exhaust side, I can see reason for it but I guess the cost/benifit wasn't in it by Nissans thinking or penny counting.

Originally Posted by Orphan

I am quite impressed with the easy N/A performance out of them so far. Once a bit more time is spent on them I don't doubt 400whp N/A will be possible without going to extreme lengths.

Has anyone started working on the VVEL yet? Seems like once people can tune the VVEL there is an easy 5-10% more power on top of the basic mods.

Originally Posted by KingDavid

The safe maximum is 550whp as per GTM and some vendors.

400hp N/A on a stock block seems very, very possible, lol. People are hitting 340-350whp with just I/H/E and a tune...CAn't wait for some more mods to come in and take it to that 400hp mark. ^_^

Originally Posted by Orphan

I am quite impressed with the easy N/A performance out of them so far. Once a bit more time is spent on them I don't doubt 400whp N/A will be possible without going to extreme lengths.

Has anyone started working on the VVEL yet? Seems like once people can tune the VVEL there is an easy 5-10% more power on top of the basic mods.

Originally Posted by !xoible

i am very ignorant when it comes to tuning and so forth, but from a 330hp @ crank to 400 @ wheel without FI sounds like a joke to me. could you entertain me a bit and explain how anyone could reach 400 @ wheel without FI?

For the lack of better things to do I have been following M3's FI section on m3post.com. the engine puts over 350 hp at the wheel (414 at crank) and everyone finds it a stretch to even reach 400 hp without FI on that car...

edumacation, please!

Originally Posted by KingDavid

Well I cleared myself up earlier. I meant 400 to the crank, not to the wheel.

People are hitting 340-350 whp (if drivetrain loss is %15 it's about 391-403 to the crank) with just I/H/E and a tune. Stock intake manifold, stock throttle bodies, a few other stock things that MIGHT bump the power to 400 CRANK hp or get very close. At least I would think so.

It comes with 336 hp and the intakes and exhausts on the 370 are extremely restricted. This VQ is different from all of the other ones. It's bigger. Comes with a bottom end that, according to paper, lol, can handle 1000whp. Has a different type of valve control unlike what I've ever seen in a vehicle.

But here's the specifics on the motor and where that 1000whp claim came from. http://www.370 z.com/MagazineArticles/tabid/57/articleType/ArticleView/articleId/14/370Z-Engine-VQ37VHR.aspx (take out the space after "370")

Originally Posted by !xoible

i think if it hits 300 rwhp i'd be happy

Originally Posted by Hi-TecDesigns

shooting for the stars, are we?