vg30 in a q45

[qship96]

Short sided mentality to build the VK to only last through warranty, just look at the American car companies for a good example......no one buys them anymore, unless strapped for cash and suckered by discounts and rebates. If Nissan lets long term durbility slip, they will join them.How dumb of them to forget the reason that they enjoy the marketshare they have today is reliability and durability.

[jimbyjimb]

I thought the purpose of an engine swap was because it would be more cost-effective for a set goal. If your goal is speed, then why replace a V8 with a V6? Instead of wasting time and money use the powerplant already in it. The VH45 has coated pistons, forged internals and 6-bolt mains. Tough to beat it. If you look at the bare block of a VH45 the sheer strength and quality of construction are amazing-this engine has huge rodding-potential with no need for aftermarket bearings, rotating assembly or block-strength. Look at the thickness of the ribs on the block, the girdle around the 4 lower mains, makes me want to weep with joy... The VH45 is a beacon of heavenly light in this respect, any rodders wet dream because of how inexpensive this engine would be to mount a forced induction setup, whereas any SB Chevy guy has to buy the entire rotating assembly, machine it, assemble it and otherwise re-engineer the enitire engine to perform a task it was never intended for. The VH45 should take anything you want to throw at it with relative ease. Been here 4 months and haven't heard about a single internal engine failure yet, even from the guys running nitrous/turbos.

[irax]

, if you want to go the easy route and not mess with a VH45 go with an LS1... At least thats only 1 step backwards vs about 3 with a VG.. The VG is a great motor, but you'll even see twin turbo Z guys taking it out for other motors.

this is the stupidest thing i have ever heard!

LS1 are highly mod-able, and parts are HIGHLY available. VH?? nope, can't even find a set of headers available.

You see EVERY talk about pulling their motor. The corvette guys talk about putting an LSx of bigger displacement, or even viper motors.The Skyline guys put in all sorts of different motors, everything from SR's and NA VQ's to AWD TT LS7's. There will always be a quest for more power.

[jimbyjimb]

It is a step bacvkwards since a VH45 is far superior internally to an LS1. In the long run a VH45 is a much less expensive and better choice to mod because of it's internal strength. The VH will take more boost than an LS1 and go longer sustaining this abuse. LS1's are great engines and un-arguably cheaper for small-pie mods, but the VH would require much less internal modification, therefore cost, to severely modify (I.E. turbocharge or supercharge). Not to mention the cost and time spent on putting an LS1 into a car that doesn't need it. If one were to go through all the trouble to transplant another engine you may as well have just fabbed headers and a new exhaust for the VH, and spent the rest of the dough you would have spent on securing the parts for the swap on a supercharger or nitrous kit and then have ended up with a more bulletproof engine making more power than a transplanted engine. It's just plain more cost effective and SMARTER to stick with a VH. Plus, modding the VH would be much more fun and rewarding since there isn't an aftermarket and you'd have to do it all custom. With the right knowledge and patience you'd come out ahead in every way and more satisfied that you were creative with a powerplant of amazing potential. Pulling head to port and mounting a supercharger/nitrous setup wouldn't be any more difficult with a VH than any other engine. Custom cams can be ground. Any decent machinist would tell you to swap such a well built engine as a VH45 for something of less strength would be less cost effective and pointless.

[irax]

Not per the "letter of the law" of the Clean Air Act.

please expand on this statement.

[maxnix]

What about a VK45DE off a F50?? 340HP stock! all motor! doesn't sound too bad.

They both provided about the same torque peak. The VK is has a little more area under the curve due to the more advaced engine mangement across the RPM range.

HP, being a calculated number from peak torque, is a generally useless concept kind of like the DJIA.

jimbyjimb gets it.

[Rex]

please expand on this statement.

Basically, you can only "legally" put in the same motor or one that was offered in a newer version of the car .... may even require it have been the same chassis, but I'd have to dig it up again.

[MinisterofDOOM]

HP, being a calculated number from peak torque, is a generally useless concept kind of like the DJIA.

EXACTLY. HP is a function of torque and RPM and provides little useful info on it's own. Torque is a measurement or FORCE, not POWER (which is a RATE) and therefore provides much more useful info alone than HP does. HP looks good on paper, but torque is the figure that represents the real energy a motor outputs.

That's why I prefer motors that make close HP and Torque numbers and don't rev past 8k or so: ANY motor can make "lots of horsepower" if you rev it high enough. But the best motors make GOBS of torque and don't need to rev very high to put it to use. Don't tell any of that to the new breed of kid tuners, though. 9k+ redlines are god's gift to man in their eyes. Probably because they've never studied basic physics.

[irax]

that might be something specific to your state. Because in california, supposedly the most strict automotive laws around, and its legal to put a 7mgte into an 86 corolla

california has 50 state smog, if its legal here, its legal everywhere.

so I don't see how 'to the letter of the law' it would be illegal to put a 94 vg30dett into a 90-94 q45

I love the enthusiasm because i am too sick of all the **** offs putting sr's just because they can get buy. It is a federal law that SR's and JDM motors that were not sold here are illegal. JDM motors are not supposed to be sold here either if they are not the exact same as US offered motors.

Though fortunately for us Nissan makes the US VQ's make more power than japan VQ's. But they can get higher top speeds but that is an ECU and TCM deal and not the motor it self.

[Rex]

Here's the section discussing engine switchinghttp://www.epa.gov/compliance/...h.pdf

Here's the excerpt I was referring to above

It should be noted that while EPA's policy allows engine switches as long as the resulting vehicle matches exactly to anv certified configuration of the same or newer model year as the chassis ...

Obviously, there's some room for interpretation, but it seems that the intent behind the CAA was that the "replacement" engine had been certified for the chassis.

Please don't take my comments as a disagreement with what some are doing, I just want to make sure they're aware before the spend the time and effort and "run the risk" of having a car impounded/destroyed.

[irax]

OMG I really appreciate you posting that,

because I have spoken to the ref's out here about motor swaps and I hate when q45tech always brings it up

BUT!!!!

Read Out Loud the last paragraph of page.

It's not upto interpretation BECAUSE

"It is not a violation if a certified configuration if there is reason for knowing that the emissions are not adversely affected."

[paranoidjack]

I think not, it is much easier to over build [over spend] for longevity than to cost control an engine so that it just survives warranty pr 100k. Too expensive if you make a mistake and end up replacing engines like Nissan found out in 2.5, 3.5, and 4.5.

That right there, really does make a ton of sense tech. Unfortunately, to compete with one another, manufacturers have to follow the downward quality tendency until the line reveals itself as you stated above so painfully. Then it's too late.

[Rex]

I couldn't find the exact sentence you referenced, but in reference to the closest ...

I think the next sentence is a step skipped, at least outside of CA

In many cases, proper emission testing according to the Federal Test Procedure would be necessary to make this determination.

And I think this one "closes" the loop holes created by the statement you referenced??

State or local programs which pass illegally engine switched vehicles may mislead federally regulated parties into believing that engine switching is allowed by federal law.

Of course it's all moot, if the person swapping the engine doesn't care or feels no pressure to comply with the CAA.

[naladude911]

wow. Maybe go VG30DETT, but VG30DE? All us J owners want to do a VH swap, and here you want to do a VG swap?

[Infinitiguy19]

I think it the case of the grass is greener on the other side of the fence.

Just like JDM VS USDM.

[rps13dn]

ok im back i was busy adding a new member to my family 2 week old baby girl lol, ok here was going on i decided to stick with the vh45 so far what i got is a 90 q45 ac, heater, emission remove somewhat gutted interior custom intake jic coilovers and of couple of misc. suspention parts. also i mite go with s14 seats does anybody know if they bolt right on? i need to put the q on a weight lost program i was also thinking of aftermarket oil and transmission coolers. got a little illegal battle going on cant get into details but i need to make my q faster without any force induction need help asap any idea would help

[jimbyjimb]

A nice helping of nitrous.

[MinisterofDOOM]

Wow. VH's rule!

Yes. But the reason for the weight difference is that the VG has an iron block while the VH is aluminum.

[Q45tech]

There are different revisions to Clean Air Act and the chassis date and engine date are the critical mix.

Obviously a chassis older than 1990 is much easier to modify just as a 1994 is harder and 1996 almost impossible due to OBDII required matching.

The problem often occurs when you are forced to pay for testing to Prove the swap meets Federal Emission Standards for idle and cruise.

Unlike the simple fast State tests on a dyno the Feds capture all the exhaust in giant bags and analyse it in totality.

The new Carbon taxes and regulations [amount of CO2 + CO created per mile] will fix the problem once and for all concerning larger displacements or Higher HP mods of any type.

[maxnix]

ok im back i was busy adding a new member to my family 2 week old baby girl lol, ok here was going on i decided to stick with the vh45 so far what i got is a 90 q45 ac, heater, emission remove somewhat gutted interior custom intake jic coilovers and of couple of misc. suspention parts. also i mite go with s14 seats does anybody know if they bolt right on? i need to put the q on a weight lost program i was also thinking of aftermarket oil and transmission coolers. got a little illegal battle going on cant get into details but i need to make my q faster without any force induction need help asap any idea would help

Let's hope your new daughter has a better future fate than your car!

[rps13dn]

what do u mean by that

[irax]

get the 4.63 R&P from the skyline