My friend has a 240sx and is thinking of putting the 300zx VG30DETT in it and i was wondering how much you guys think it would cost to buy the engine and if its a good idea or bad your replys would be very helpful.

 

I'd love to help you out, but just advising you this is a Honda board and most likely will not get much responses.

 

The engine is too big. You need to have someone fabricate new mounts and modify your subframe to fit it and the tranny. It'd easier putting an RB20DET in an S13 or a RB26DET (RWD) in a S14.

 

Not too big, I meant too much work.

 

just tell him to get a SR20det... thats going to be the best bang for the buck.... or tell him to wait until the new silvia engine becomes available.... its a VG20DET..... its a SR20 with that valve timing goodness.....

 

sr20det will be fine. just add more boost.

 

http://www.freshalloy.com

 

Thanks for helping me out guys i appreciate it.

 

sr20's suck IMO....my friend's building a VG30et and droppin into his 89 240; it's gonna be a beast! It fits nicely, he's usin a Maxima crossmember, I believe. He had to make his own motormounts, but he's a master of cars and fabrication. He also had an old 280zx turbo w/ a t3/t4 that had the wastegate jammed shut. He took it to the track and ran it, spun through every gear and ran a 10.02 and got kicked out of the track for lack of safety equipment. If you have any questions, i'll ask him.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RiceNmotioN &raquo;</TD></TR><TR><TD CLASS="quote">The engine is too big. You need to have someone fabricate new mounts and modify your subframe to fit it and the tranny. It'd easier putting an RB20DET in an S13 or a RB26DET (RWD) in a S14.</TD></TR></TABLE>

the RWD RB is the RB25DET not 26
you can also put the 25 in a s13 or any 240 for that matter. same with th rb20.

 

SR20 is crap....???you've obviously have never seen JUN's hyperyellow S15 then!!
the SR20 is a mechanical marvel similar to the likes of the FJ20, EJ20, 2JG and RB26DETT!! I'm a honda through and through, but i know a good engine when i see it. the SR20DET will drop straight into the 240, as they came standard in S13-15 in the asiapacific and other markets. the VG engine will fit, but you'll require custom mounts. if u want twin turbo, i suggest u go with a RB26DETT. much much more potential...oh hang on..they only come in right hand drive..my bad.
if not, RB25DET......the RB20 is an older engine, but lower displavement. better of with either the SR20 or RB25

 

The only rear drive maxima used the old 240/280z inline 6. All the v6 maxima's are front drive. What good would the crossmember be in a 240sx?

A 300zxtt is really packed under the hood. Putting all that stuff under a 240 hood will be worse. The 300 is only ok for cooling and intercooler size and space, the 240 will be worse.

From the power curves I've seen for the "disco potato" version of the sr20det, that looks like a way better way to go.

The 240 is deisgned for inline motors, not V. Seems like a huge layout in time and money just to be different.

The iron block v6 plus two turbos and intercoolers and plumbing and bigger radiator and extra structure and heavier drivetrain pieces will make it very nose heavy and increase weight in general. There is a reason the 300tt weighed around 3500lbs.

 

I have to agree... I love nissans as much as hondas, but if you want the VG30 buy a Z. If you have a 240, go SR20 or RB if you wanna spend the money. It's hard to argue with the Disco Potato power band, especially for the price. For the amount of custom fab work you'll have to get done to cram the VG30 into your 240, you could have already had the new turbo. Just my opinion tho...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mohudsolo &raquo;</TD></TR><TR><TD CLASS="quote">From the power curves I've seen for the "disco potato" version of the sr20det, that looks like a way better way to go.</TD></TR></TABLE>

Or spend half the money on a brand new S15 turbo and make more power...

 

Boost the ka! [flame suit on] I know everyone loves the sr, but a built ka will put down just as much hp and more torque. We're shooting for 400 rwhp/400 ftlbs on pump gas.

 

hehe, let me clear up that last statement...

I think that a boosted ka is the best way to go for a cheap, fast 240. I have a friend running one, and it's decently quick. The SR20det is a very nice motor, but it's still just a 4 cylinder, and it's still got a relatively low power-potential. For the money, I think the RB engines are a MUCH better option; there's a guy running around here w/ an RB26, I believe.

And I'm not sure about the maxima crossmember thing, but i remember him saying he used one and it worked. Why are ya'll raggin on a VG-swapped 240? Have you ever even seen one? I didn't think so. The VG30 that he's using is outta the first gen 300zx's, so it's the single turbo. It fits very nicely in the engine bay w/ almost no mods whatsoever, except for the custom motor mounts, of course. It's also not too much heavier than the other options; it may be heavier, but it isn't really noticeable when driving. And the main advantage to the VG? TORQUE! Try riding in a car w/ a motor like that, and you'll wonder why you ever went w/ a honda.

 

For myself I guess I just have an autocross/roadcourse mentality. Adding frontend weight to add power just is against my basic thinking. I admire anyone willing/able to take on such a project. I hope it works out well. I guess I missed the part about it being the single cam single turbo version of the v6. That is way smaller than the tt version.

Those motors only made around 200 hp stock, will they go up to 400/400 with reliability? I love torque but I also love a light car that can be tossed around corners. I've been in a Z06 vette which is around the power level you are trying for, and I have to say "wow that is strong!" Are you building straight line drag car, fun street car, or something that corners too?

 

well, like i said before, it's not my car, it's my friends. It still handles good, but you're right; its prob. not what you'd want to do for an autox car. And adding a bit of power while sacrificing a bit of handling may not be too worthy, adding a LOT of powre while only sacrificing a bit of handling is well worth it, IMO. And yeah, he's pretty much living for drag cars; he doesn't ever really get involved in anything other than drags.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote">The SR20det is a very nice motor, but it's still just a 4 cylinder, and it's still got a relatively low power-potential.</TD></TR></TABLE>

Low potential:
http://forums.freshalloy.com/u...32762

 

I meant max. potential, and how hard it is to pull out the horsepower. Not only do the RB's and VG's start w/ more hp, but they have more torque and are easier to pull more horsepower out of. What's the max you've seen pulled out of an SR, and then what's the max you've seen pulled out of an RB? I've seen over 1100hp out of an RB....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by LudeyKrus &raquo;</TD></TR><TR><TD CLASS="quote">What's the max you've seen pulled out of an SR, and then what's the max you've seen pulled out of an RB?</TD></TR></TABLE>

~750hp at the wheels for an SR, ~1400hp at the wheels for an RB, ~750hp to the wheels on a VG30DETT with HKS head gaskets being the only modification to the motors internals...all of which mean absolutely nothing when discrediting or promoting a swap in to another chassis, especially a street car. Of course therein lies the glaring flaw of the US import scene, big dyno numbers are the chief priority(i.e. gets the most hUnNyZ) and gearing considerations, engine longevity, useable and manageable power bands(goes hand in hand with gearing), realistic budgeting, etc, are nowhere in the minds of the NOPI Nats aficionado.

 

If you put in an RB26DETT in your 240sx would it have to be a right hand drive?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ToMMyF20C &raquo;</TD></TR><TR><TD CLASS="quote">If you put in an RB26DETT in your 240sx would it have to be a right hand drive?</TD></TR></TABLE>
No.

you cant run a TT setup with the stock manfiold on the rb26. and you cant run AWD.

so to get a RB26 in you need to eithre convert to sigle turbo or make a custom TT manifold and all the piping for it and you have to use the RWD rb25 transmission.

the reason you cant run a TT setup is because its LHD. the steering rack is in the way of the second turbo.

 

So would it be better if you put an RB25DET?

 

Yes.
unless you absolutley have to have a GTR motor.