ls1 into a Q45

[AZ94Q]

Let the jerry rigging begin

[AZhitman]

:Werd

This forum is ON FIRE!!!

The 240sx guys think they have the corner on modding Nissans? HA!

[AZ94Q]

Heh that reminds me..

One day I was looking for someone who posts here with the name of s something.. cant remember exactly..

Holy $hit there is alot of S's on this forum

Sr20 Sr13 all those and about 1x mil variations..

They think of us as the oldsters and we think of them as the kiddies

At least we have wes to help out our avg..

[motorhead]

I found the answer I had earlier about the weight of a dressed q45 engine. It is 545 lbs. About the same weight as an all iron small block. LS1 is about 457, so I lose 90 lbs off the front. Lighter wheels, calipers, rotors(if I can find aluminum hat rotors cheap enough) and a battery relocation to the trunk, and lighter front seats, and I may be able to get 150 lbs off the front end.

[Mav]

Motorhead, could you elaborate on what exactly dressed weight would usually include please.I am thinking of either a 350 chev, LS1 or VH45 into my vehicle and know how much my old engine weighed, so would like to compare weights of the engine options.

Does dressed weight include any of the following?;

power steering pumpalternatorA/C pumpOil and filtersheaderscoolantengine fan & clutchpulleys and beltsflywheel or flex platestarter????????

Thanks

Mav

[AZ94Q]

I don't know how you're going to save weight from the brakes/rotors/tires/wheels..

The Q had 15 inch tires and wheels.. The BBS wheels were pretty much the lightest weight wheel you could get..

The rotors were only 11 inches, and not as thick as their skyline 300zx counterparts...

Relocating the battery and putting in some lightweight racing seats would definetely save some pounds

[AZ94Q]

You have a nissan patrol?

You should do like that other crazy Aussie did, and slap a TT On the VH..

That patrol burned some serious rubber

[Mav]

You have a nissan patrol?

You should do like that other crazy Aussie did, and slap a TT On the VH..

That patrol burned some serious rubber

I would love to do the tt vh45 into my patrol. The bloke who did the TT patrol works in the same town as me. :ylsuper

[motorhead]

For the LS1, i belileve dressed weight includes I believe dressed weight includes the full long block with fluids ready to run, including everything you listed Here is a link to the LS1 notes. Fresh out of the crate is 390lbs. All the accessories and fluids bring it up to 457lbs. The LS1 is extremely light for the power it makes. The only lighter domestic weight would be an all custom job with lightweight forged rotating assembly and heads chosen for their light weight.

[Mr1der]

I take it this is gonna be another solution to the pesky guide problem then?

[twoeightythreez]

Dude,
The LS will be lost in the Q engine bay,
It will look like a 6cyl in comparison to the VH45
Did you even open the hood? Just kidding.
Seriously, though, the VH is bigger in every single dimension.
Did you ever get it done?
Btw, all the Nissan gauges save for the info center could easily be made to work.
I could even venture to guess that the tach would work, both pcm's output a 4cyl signal

Speedometer would need a converter box
Temp gauge just put nissan temp sensor into ls block
Oil light just hook to ls oil press switch
Fuel gauge will work if you keep stock tank
Fuel pump just put in a walbro 255 or similar and bypass the fuel controller.
Gm pcm controls AC compressor....
ABS is pretty much self contained....
In fact the hardest part about this electrically would be keeping the cruise contol.
Good luck

[Desert Rat]

LS1 has to be massaged to get that 450HP you're after. That's about 125HP over stock.

LS3 on the other hand....

[AZhitman]

LS1 has to be massaged to get that 450HP you're after. That's about 125HP over stock.

LS3 on the other hand....

That's a cam, headers and a tune. Ask me how I know.

Oh, and every time someone mentions the word "weight" when someone talks about an LS swap, they should be banned from talking about cars... Ever.

[MinisterofDOOM]

Oh, and every time someone mentions the word "weight" when someone talks about an LS swap, they should be banned from talking about cars... Ever.

Right. OHV packaging's biggest strength is size and weight. Go pop the hood of a V8 mustang. Then do the same on a Camaro. The effing HEADS alone on the Coyote are half as wide as the whole LT1.
I have a particularly tiny OHC V8 in my car, and it is way smaller than a coyote, smaller than a VH45, smaller than a northstar, smaller than Audi's 4.0. But it's still bigger than a SBC. And heavier. And more complex.

I've seen LS3s in S2000 engine bays and they take up LESS space than the F20c including the manifolds.

[AZhitman]

Yep. Drive an LS-powered Miata and tell me how much "it screws up the weight balance."

Yeah. You lose 5 lbs of weight s***ting your pants when you grab 2nd gear.

The best one is when classic Z guys (iron block straight-6) start flapping their gums about LS swaps and "weight." OMG STFU.

[alexnds05]

I have read the discussion with great interest, as an LS engine swap seems like the way to go into a 25 + year old car. There was recently a video made comparing a Coyote 5.0 engine, with DOHC with an LS engine, with the limit being, $10,000 was the dollar amount a person could spend and not a penny more. This video shows that while the dual overhead cam engine shows more power per cubic inch and with variable valve timing and greater volumetric efficiency, the LS engine provided 100 LB/FT more torque and in the real world would be a cheaper engine to build, as the OHV valve design is narrower, and fits a greater number of GM and non-GM cars for that matter. This comparison would be very similar to a comparison of the VH45 engine to the Coyote engine, in that, both are DOHC designs with Variable Valve Timing. The advantage in a 4100 lb car of more torque from a used 5.3 liter, or 5.7 or 6.0 Liter GM engine, is that cars are not driven based on peak power, but are driven based on power under the curve, with the most useful power-band occurring between 2,000 to 4,000 rpm. Sure it's great to know what an engine can do a 6800 rpm or higher, but unless you are racing, you're not going to race a 4100 lb car, as lighter weight alternatives exist.

In terms of fit, I'd like to know that as well. However, here is the Q45's little brother, the J30, with an LS engine:

https://www.youtube.com/watch?v=u1Ft_5Q4gws

If the VG engine, that is heavier than the LS engine can be swapped out for an LS engine, than the wide DOHC VH45 engine should be no problem