Hello,
Has anyone confirmed that the tranny bolt pattern is the same or different than the VQ30/35's?


thanks
allen

 

Why is this thread labeled VQ40DE?

 

Because he's asking about the bellhousing bolts on the 40... Um???

I couldn't tell ya but I can speculate that it is the same because the Frontier uses the the 40 and some of them have the 6Spd. I wouldn't think Nissan would completely re-engineer the tranny when they have a very stout package available already. Go to the dealer and crawl under a frontier. Why do you ask though? You keep switching motors when your about to get the current one running.

 

I'd like to know if the VQ40DE tranny bolt pattern is the same or different than the VQ30/VQ35's. The bolts on the block are the important ones, the ones on the upper pan are not so important.

allen

 

We have a Frontier here at work and I just got out from underneath it! But, I couldn't see the upper bolts at all.

Don't worry bro, I'm keeping the 3.5 for quite a while. I'm just researching the interchangability. If I ever come across a good deal on a 4.0 I'd like to know if it would be feasible to swap it in.

allen

 

.. Reading > me.

 

I have an 05 frontier in my garage. I believe the that 6spd from the 350z is the same one used in the frontier, so it ought to work fine.

Just a further thought....

350z 6spd is the same as frontier 6spd so...
frontier uses 5spd automatic also, same unit as titan/armada so...
6spd from 350z would bolt onto VK56DE from titan/armada

That engine is an intake manifold and headers away from 400hp.

 

How strong is the 6-speed, really? I imagine the lighter tha car the more reliable it will be, but I'm curious how well it can take really hard drag launches in a 2200 lbs car...

 

 

Allen, why dont you ask the guy doink the VH41 s13 swap? He might know a little more about interchangeability of those parts.

~Alex

 

Well, I haven't blown it up yet. Although I haven't had any serious tire until recently. But from the shear size of the case I'd say its way overengineered. Take a look at my homepage to see what I'm talking about. I've never seen anything as wide.

I highly doubt the gearing is the same. So yes, the casing is probably the same but the internals are probably very different sizes. What do the frontiers rev to? Quick search on the gearing of the frontier doesn't bring up anything. Have a look in your owners manual. The Z's have the following cogs:

1: 3.794:1
2: 2.324:1
3: 1.624:1
4: 1.271:1
5: 1.000:0
6: 0.794:1
Final drive: 3.538:1


Now theres an idea!

 

One thing to note is that the Frontier's tranny has a removable bell housing so, any tranny swapping may involve interchanging bell housings. I suspect the Titan also has a removable bell housing.

allen

 

you are right.

Frontier
1: 4.368:1
2: 2.518:1
3: 1.743:1
4: 1.283:1
5: 1.000:0
6: 0.769:1

Final drive: 3.538:1 or 3.692:1 with the 6spd
Final drive: 3.133:1 or 3.357:1 with the auto

The VQ40 does not rev near as high as other VQ's, with a long stroke (95.5 bore, 92 stroke).

 

Internals specifics > me

MAYBE we can swap the pistons to stroke the VQ35????

 

maybe.

 

You mean bore? VQ40 and VQ35 pistons have the same bore. It's only the crank and block that's different.

VQ35= 81.4x95.5mm
VQ40= 92x95.5 mm

 

It's alright, I have a 2005 350z 6-speed tranny sitting next to my VQ35 in my garage... Just looking for extra peace of mind when I beat on it lol

It's pretty heavy too... 30 pounds heavier than the stock KA tranny. So "overengineered" sounds about right. An overengineered transmission mated to an overengineered engine... sounds good.

 

holy crap I didnt know there was more Engine Codes... VQ40 and VH41?

geeuz

 

I wouldn't call the 350Z tranny overengineered. From what i've seen it's the weakest link.

 

The stock rods go well before the stock tranny goes.

The tranny is definitely heavier but the motor is significantly lighter. Allen, didn't you weigh the combo. What were the results?

1: 4.368:1? D@mn! No wonder people complain about that first gear. Its basically useless. Its not like the suspension can handle hauling that much weight so it doesn't need a semi-like stoplight gear. Do those things not have 4 low?

 

so.....wat ur sayin is that someone should build a 400hp vk56de 6 spd....maxima?

 

Someone on my350z.com said he couldn't get the VQ40 to fit in the engine bay and he said the 350z tranny didn't bolt on. He said the VQ40 was too tall in the engine bay using stock mounts. So he had to notch the block to fit VQ40 crank in the VQ35, and he was saying something about rods not being different also. The bearing size was different I think, and it was a hassle since he bought forged rods and they were not working.

 

We need a picture of the back of the block or the front of the tranny so we can put this question to rest. The height issue could have been the intake manifold, if not it would be easy to adjust for if you're building custom mounts anyway.

allen

 

The VQ40 is a taller block to accomodate the stroke, its not the intake manifold that would be the problem because its not very big.

 

Are you positive the block is taller? I believe it is possible to increase the stroke without changing the block just by changing the crank design.

allen

 

Nevermind, I read the old post where it's said the block height is increased by 29mm. Now, I need more proof of the block bolt pattern for the tranny...


allen

 

this thread is useless...think about it this way...would u put a ford f-150 5.4 triton V8 in a taurus? NO!! SO WHY ON A MAX???

 

Its for a 240 smarty...

Hey Allen, you should put in your profile that you have an s14 so people don't get confused like previous moronic poster.
<

 

gtfo.

 

ok which stock mounts? and we established that hood clearance is not a issue on maxima.org

 

He tried to put a VQ40 in a 350z and it did not fit, trying to use stock 350z mounts. It was too tall. I guess everyone doesn't want a scope on the hood.

 

i guess that means he wasnt that serious about power

 

Well, since I have no picture or numbers to back up my claim, what I am about to say will still be a little unclear but....

I have seen the two blocks side by side. Not engines in cars, I mean the blocks. They are very different. The 3.5 has the heaxagonal style bolt pattern for the bellhousing, you know like sorta following the outer perimeter of a hexagon shape.

The 4.0 is more closely a circle shape if the bolts were connected with a line.

That description is vague at best, I know.

 

So how much power does a hood scoop give?

 

Hey Allen.. Tim at SCC Mag was looking for you... something about featuring your car in the Hybrid How To section? He said a guy with a VQ in a S14.. so, I assume that's you.. He said he's been trying to get in touch with you..

Travis

 

keeps the im cooler cause the air is hitting it directly

 

NOOOOOOOOOOOOOOoooooooooooooooooooooo.....there goes the cheap VQs in junkyards. Then again...maybe SR20DETs won't be raped so much.

 

And so that makes "serious" power?

 

Ouch...i saw that one coming...

 

Lol.. well, the following month, will be this car...



VQ Frenzy in SCC Mag!