Q45 V8 in a 240sx

Post by **A_Rivers** » Mon Mar 31, 2003 7:39 am

Alright... if Aries can shove an LT-1 SB Chevy motor in his 240 what about a Q45 DOHC V8 in my 240. I am wanting to gather as much info about the Q45 V8 and possibly swapping it into my 240. I would do the Chevy conversion but I would like to keep it all Nissan if possible any help, info, advice would be greatly appreciated. Has this been done before if so any links?

Thanks, Aaron

Post by **djtodd** » Mon Mar 31, 2003 7:39 am

Just toss in a rb26dett :ylsuper

To reply to your question: I don't think I've ever heard of anyone attempting this.

Post by **PalmerWMD** » Mon Mar 31, 2003 7:39 am

Aaron,

I understand your sentiment and I agree: putting in a VH45DE into a 240 has more "purity" to it, from an enthusiasts standpoint than A GM product.But, evryone who who has looked into it so far has said it wont work (even though cursory inspection suggests it could)The measurements of the engine are posted in Buy/Sell in my "parting out Q" thread.

Sopadope from the Infiniti sections here, who owns both Q's and 240SX got pretty close to doing it and even started a test fit, but found that the VH45DE is just ever so sligthly too wide.

Fred..

Post by **A_Rivers** » Mon Mar 31, 2003 7:39 am

Well that sucks..thanks for the input palmer and to answer the reason I don't want to put a RB26DETT or SR20DET in it is I want to have a USDM engine with every part available at the dealership near me should something break.

Post by **Aries** » Mon Mar 31, 2003 7:39 am

the swap is possible.I'm even tempted to do it on an S13...ONly thing is that it requires going to a tube frame chasis to accomodate the extra width of the motor.

Post by **Stock-S13** » Mon Mar 31, 2003 7:39 am

talk to sopadope he said it would be very difficult there are like 2 threads of his so check it out there.

Edgar

Post by **PalmerWMD** » Mon Mar 31, 2003 7:39 am

I really wish some one would.Its gonna be a lot of work and $$ tho.But..It would be very cool...

Fred...

Post by **lessthanjakejohn** » Mon Mar 31, 2003 7:39 am

Talk about expensive...

You guys think that this could easily become a 30,000 dollar project?

Post by **PalmerWMD** » Mon Mar 31, 2003 7:39 am

No not nearly that much i wouldnt think.You can get a good VH45DE used (from me for 1300 if you are willing to pick it up and pull it yourself, soon I'll have it shippabvle and it'll be more)Your gonna need a standalone ECU and a to do a manual transmission swap for teh right feel.There are all sorts of manual transmission's out there, but you'd have to make a custom bellhousing maybe flywheel too (maybe not).I know nothing about the tubeframe costs though:oface.

Fred..

Post by **lessthanjakejohn** » Mon Mar 31, 2003 7:39 am

palmerwmd wrote:No not nearly that much i wouldnt think.You can get a good VH45DE used (from me for 1300 if you are willing to pick it up and pull it yourself, soon I'll have it shippabvle and it'll be more)Your gonna need a standalone ECU and a to do a manual transmission swap for teh right feel.There are all sorts of manual transmission's out there, but you'd have to make a custom bellhousing maybe flywheel too (maybe not).I know nothing about the tubeframe costs though:oface.

Fred..

doh i'm retarded, the only time I remember hearing the price of a VH is a long time ago when someone had their engine replaced for like 8 thousand or so and then when you parted out your car for 1300

Post by **Aries** » Mon Mar 31, 2003 7:39 am

palmerwmd wrote:No not nearly that much i wouldnt think.You can get a good VH45DE used (from me for 1300 if you are willing to pick it up and pull it yourself, soon I'll have it shippabvle and it'll be more)Your gonna need a standalone ECU and a to do a manual transmission swap for teh right feel.There are all sorts of manual transmission's out there, but you'd have to make a custom bellhousing maybe flywheel too (maybe not).I know nothing about the tubeframe costs though:oface.

Fred..

I will tubeframe a chasis of ANY Nissan for $5800.That is $2600 cheaper than any shop I have talked to about doing it on Nissans as there are only like 7 of us in the US willing to do them.

The swap would definately not be cheap, and would be comparable in price to my now $15000 Chevy swap.

Post by **lessthanjakejohn** » Mon Mar 31, 2003 7:39 am

5800 for a tubeframe? wow, I had gotten the idea that a frame would be a ton more.

Post by **Aries** » Mon Mar 31, 2003 7:39 am

tubeframing can be done cheaply because we can reuse most of the body of the car.This allows us to do away with anything that we see as unnessecary to the final use of the car; weather it be track racing or drag racing.The use of a tube frame also allows us to spread out braces such as the two lowers in the engine bays on 240's.

But because the tubing is fairly cheap, all you really pay for is the labor time on welding.

Post by **nlzmo400r** » Mon Mar 31, 2003 7:39 am

Aries, u say u can do it on ANY nissan , well i have an o2 altima 2.5s and am curious if u could work that out, ive thought of the VH45DE motor for all of the torque and just uniqueness, just curious man, dont bend over backwards looking for information for me, thanx man

Post by **themadscientist** » Mon Mar 31, 2003 7:39 am

I was playing with the ide myself, I was willing to make a manifold for the 6-71 supercharger, change out the crossmember etc but I couldn't find a Nissan transmission for a 90 degree banked V-type engine and there was no aftermarket support so I scrapped the idea. I have my eye on the new 5.6 V8 in the new Titan, it could be what I need.

Post by **Aries** » Mon Mar 31, 2003 7:39 am

nlzmo400r wrote:Aries, u say u can do it on ANY nissan , well i have an o2 altima 2.5s and am curious if u could work that out, ive thought of the VH45DE motor for all of the torque and just uniqueness, just curious man, dont bend over backwards looking for information for me, thanx man

It can be done.Not really any harder than converting a civic to RWD for drag racing.

hang a Moser 12 bolt under the back end on a 4 link suspension, create a trans tunnel to accomodate the driveshaft, and then tube the front half.

Post by **A_Rivers** » Mon Mar 31, 2003 7:39 am

Well heres what I was thinking. I want the VK45DE out of the 02 Q, beside the fact that it has 340 hp instead of 280, it also has a 5 speed auto instead of the 4 speed. The fact that the 5 speed weights 45 lbs lighter than the 4 is just an added bounus. If I have to I have no issues with having to cut the inner fender wells out for more side to side clearance. Does anyony have the diminsions on the VK engine? I know this sounds like a lot to try and tackle for a 19 year old but hey I might actualy finish it before I die if I start now. Also has anyone seen anywere possible prices on the entire drivetrain and harnesses that I'll need for the swap.

Thanks, Aaron

Post by **Nismo_Freak** » Mon Mar 31, 2003 7:39 am

it is all possible.Just look at all of your options and prices before you decide to begin.

Post by **PalmerWMD** » Mon Mar 31, 2003 7:39 am

A rivers:

I can see about wanting the newer transmission but as for the engine the VH45de is a lot stronger in many ways.Overengineered as this was Nissan first V8.4 bolt mains plus two cross bolts, so 6 bolt mains 2 of which are cross.

The VK makes 333lb/ft torqueThe VH makes 337 w/ the JWT ECU

Also the VH can be easily chipped via JWT for a 7200 redline and handles it very easy ( one member has had the chip for 174k miles as gives the car WOT all the time)

Fred...

Q45 V8 in a 240sx

Q45 V8 in a 240sx

Nissan Forums

Infiniti Forums

Datsun Forums

Technical Forums

Classifieds / Marketplace

Nissan Motorsports

General Forums