mtcookson

Likely because they are much cheaper to build, especially if you can go with the stroker setup and there are a ton more parts available for an NA setup for the L series than the VG from what I've seen. (that's why going turbo with the VG is the best option for power, unless you are looking to do some class racing where setups like that may not be allowed). Depending on the rules, I'm fairly confident I could build up an NA VG that could compete with the L28 quite well.

200 at the crank or 200 at the wheels? I can see 200 at the crank being easily accomplished with the VG30. You pretty much already have all of the needed basics down, head work, cams, etc. As far as the cams though, personally I'd go with a regrind from Isky. Tell them exactly what you want and they should be able to design a cam for you that will work exactly as needed. The JWT S2 cams will definitely make more power... but they're designed more towards being turbo cams since the majority of the high power VG's that will need cams are going to be boosted... they simply won't be optimized for an NA setup. Now, that's not to say you won't hit your goal with them I just think it would be better getting a custom setup designed specifically for what you want. Plus it would probably be cheaper anyway. Now... if you're wanting 200 whp (which equates to upwards of 250 bhp) you probably want to skip the VG30 and go with the VG33. Either build up the VG33 with custom, high compression pistons along with the basic head work and cams or you can go with 90-96 Q45 pistons, a slight bore, and the head work for an easy 250 hp. Possibly more with the right head work and custom cams (I'm pretty sure the 250 hp VG34 setup was using JWT cams which, like I said above, aren't very optimized for NA power).

You don't have to worry about lash pads and the such as you have hydraulic lifters. New cam, new lifters, and you're good to go... no adjustments needed (unless you get some adjustable cam gears).

Their post is nearly 2 years old and they only have one post so they're not likely around anymore. Just a heads up.

If you're looking for a high hp NA VG... build up the VG33. You can do a simple, cheap setup using early Q45 pistons with a slight bore and some head work (cams) for a 3.4 liter 250 hp setup. That's a relatively low compression ratio of 9.4:1, if memory serves, so if you just get a set of custom high compression pistons you might see even more, especially with some more extreme NA cams (custom grind).

Isky is supposed to be a good one. It definitely wasn't a lack of understanding or a poor setup, the cam's specs were way off in certain areas according to his post. I noticed some say it may have been due to a group buy, that maybe that's why the quality might have dropped or something along those lines. Regardless... be absolutely sure to put in new lifters when you put in a new set of cams. They actually wear to the cam and if you put old lifters with a new cam can cause some issues due to them already being worn... something along those lines. Just replace them.

hmm... do you have the numbers for the turbo that Precision put on there?

GT3076R has a .60 a/r compressor with an anti-surge housing: http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT30/GT3076R_700382_12.htm GT3582R has a .70 a/r compressor with a standard housing: http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT35/GT3582R_714568_2.htm That would be the easiest way to tell between the two. I'd say if it truly is a .60 a/r compressor, you likely have the GT30. There are quite a few turbine options for both, both having a .63 a/r option.

Yeah, for me its even worse because the Z32 a/c bracket sits right where I think the oil filter bracket will be. I'm hoping I can either use a block plate or, more likely, a sort of diverter plate that essentially fully bypasses the filter setup and pumps over to the normal filter location. I was also thinking of doing a remote filter setup but I think regardless of how I do it, it'll need to be a custom plate that is as slim as possible for my setup. I'll know for sure as soon as the pump gets here, which I think will be Monday. Yeah, its still there they just used a simple block plate from what I've seen. Here's the diagram (second down) that shows the block plate on the top, right of center: http://www.courtesyparts.com/betasite/xterra-wd22-2000-2004/genuine-nissan-parts/engine-mechanical/150-lubricating-system/-c-532_14_391_461.html From what I can tell, all VG33's used this setup too. The Xterra, Pathfinder, Frontier, and Quest. If there are others, I don't know about them. Yeah, I know the stock crank is definitely strong... though when was it determined they weren't cast? Actually, I'm 99.9% sure they're cast as I believe it was a Nissan brochure that said they were cast iron. Anyway... regardless they definitely will hold power, however, he already has a Z32 crank so might as well us it. One thing is an absolute definite... the Z32 and VG33 crank snouts should be way stronger than the VG30 snouts. I broke mine off simply trying to get the timing sprocket off and I think others have broken them from over tightening the accessory belts, which is common and easy to do. That's interesting, I'll definitely have to remember that. Thanks for the info!

I'm actually working on the very thing right now. I'm fairly confident the VG33 oil pump will fit over the Z32 crank as the snouts themselves are the same size... but I'll know for sure as soon as the VG33 oil pump gets here. The oil pump is different than the others though though in that the oil flows to the left of the engine into an oil filter assembly, then back to the engine (from what I can tell by looking at pictures). They block off the standard oil filter location used on all of the other VG's. What I don't know, and need to find out, is if this can be bypassed so that the standard location can be used. It may not matter for swaps like yours, you may be fine using the VG33 oil filter setup but for my project it gets in the way. Hopefully I can get around that. As far as the DE(TT) pump on a 30/33E... its a no go, at least I don't believe it would be safe to. The middle of the pump comes up a bit higher than on the VG30/33 to where the two bolts in the center top of the pump do not line up with the block. I don't believe there's enough surface area touching the block to where it would get a good seal either so the VG33 pump, if it fits like I think it will, should be the best route to go for a Z32 crank in a VG30/33. I'll know for sure by early next week at the latest.

He wouldn't be able to use that though unless he were to swap in a VG30E crank... Also, from what I've seen I thought the VG30ET oil pump was always a higher flow pump compared to the VG30E. One place I saw said the turbo oil pumps flow about 25% more than the non-turbo pumps. I'm confused now... like usual.

Eh? Where'd you hear this from? Just curious as I've never heard of that before.

Very cool. I definitely want to try out a VG33 sometime. From dyno's I've seen they make some incredible torque. Oil pump wise I can't think of any that would be better, unless they used a higher volume unit on the VG33ER. The VG30ET had a higher volume unit than the VG30E so Nissan might just do that for higher performance engines. It could have been due to the need to supply oil to the turbo but I'm not sure. You might ask around at http://www.z31performance.com. When it comes to VG's there's definitely guys there that know their stuff. Plus, I know they would probably love to see a VG project like this.

The DETT is definitely a wide and somewhat heavy engine and will be a pain to swap... but if you can pull it off will definitely be fun. I think there might be a few threads on swapping one in on here but I haven't seen too much info on it so you'll mostly be figuring out a lot of the stuff for yourself. I'd go ahead and do a search here and see what you can find, that should get you on your first step at least. Good luck with it!

30E makes 160 on 9:1 compression and DE makes 222 hp. ~62 hp difference (some 30E's were rated higher and others lower, depending on the vehicle). The torque difference is around 16 ft. lb basing on the 89-94 Maxima VG30E's 182 ft. lb. (also different ratings in other cars, some being higher and lower, mostly the trucks being higher if I remember correctly). I also have a set of DE heads if you want to test those as well.

Sounds good.

Z32 5-speed: 1st - 3.214 2nd - 1.925 3rd - 1.302 4th - 1.000 5th - .752 Twin Turbo R230 differential - 3.692:1 NA differential - 4.08:1 90-96 Q45 R200 - 3.538:1 For top speed another option would be the Nissan Armada R230 differential options (this R230 has even larger flange axles and axles compared to the 300ZX from what I've seen): 3.36:1 2.94:1 Excellent site for calculating gear ratios and such - http://www.geocities.com/z_design_studio/transmission_300zx_tt.html

3.8 V6 in the GT-R 4.5 V8 in the SuperGT GT-R (GT500)

Heck, if you have access to a flow bend I'll send you some spare heads I have. I have the Maxima W series heads as well as some non-W series Z heads that I can send you. I can send all or one of each or whichever route you want to do. Also, if you have a 300 you should drop by http://www.z31performance.com some time. Its pretty much the best place for all things performance oriented for the Z31.

Finally found it... the '03 JGTC definitely had the VQ: http://www.sportcompactcarweb.com/features/0504_scc_nissan_skyline_gtr/index.html

Sorry about that... I'm too used to trying to set "noobs" straight on "turbo lag", which is why I brought that up. I see you're definitely no noob to engines though, which is awesome. You'll probably be able to teach me quite a bit of stuff in a lot of various areas. As far as head flow data... I've not ever seen any. This is the best data I can think of off hand but was aimed more towards intake manifold testing: http://www.redz31.com/pages/plenums.html

1,000 hp has supposedly been pulled out of a VH45 on a factory rebuild (stock internals). This was in a boat though so cooling capability would be massive.

Ahh, hell... forgot about the VG33. With 90-96 Q45 pistons (VH45DE) you can have a 3.4 liter setup in a VG33. Has a compression ratio of around 9.4:1 if I remember correctly. With cams and some head work I believe guys were making 250 whp with them.

??... that appears to be a 90° crank... ??

Yeah... I didn't know the GT-R ever had the 4.5 in it. I know they definitely put the VQ in, which did make for a faster car than the RB26. (I dislike the RB26)