V35 Saloon VK45DE build

[30ed32]

On 5/25/2022 at 8:44 PM, Maruku said:

The Nissan V8's are awesome engines, very underrated. Must have been a hell of a job considering the Z has the same amount of engine bay room? I am finding that it is quite the task 😄

Yeah it was pretty tight, these 90 degree v8s are so wide there was about 6mm clearance on each side between the exhaust manifolds and chassis.  Front was pretty tight as well but I didn't move the engine back like you are.

[Maruku]

 😆😆😆😆😆

I am well chuffed!

 

[V35_Paul]

thats sooo cool 😍👍

[Vee37]

@Maruku Just looked at one of your old photos, and noticed how puny the oil filter was. I noticed when changing the oil & filter on my V6 370, the Nissan filter recommendation for the 3.7l was the same as what is recommended for a  1.2L  on other makes see the following for photos (ie visual diffs) (the link preview shown below is not the post it leads to....)

 for some photos of he difference of the upgrade option someone else found, for the 3.7. Basically the thread size & depths for the inner and the outer match, but the filter is much bigger.

[Maruku]

On 5/31/2022 at 8:55 AM, Vee37 said:

@Maruku Just looked at one of your old photos, and noticed how puny the oil filter was. I noticed when changing the oil & filter on my V6 370, the Nissan filter recommendation for the 3.7l was the same as what is recommended for a  1.2L  on other makes see the following for photos (ie visual diffs) (the link preview shown below is not the post it leads to....)

 for some photos of he difference of the upgrade option someone else found, for the 3.7. Basically the thread size & depths for the inner and the outer match, but the filter is much bigger.

Thanks for the info mate. To be honest I haven't delved much into that but the puny got even punier cause I went with a Nismo oil filter. NS4 or 15208-RN011. I only imagine the smaller one will need to be replaced sooner cause of the size, not worried about this at the moment. But that is what they recommend on the Cima F50 which my engine is from.

[Maruku]

Some updates, finished the exhaust and fitted the dual fan assembly on the radiator (very snug fit!). Going to fit two extra o2 bungs for a wideband sensor and heat wrap the cats for emissions, if it helps. Now need to fix some tiny rust spots and finish up the suspension so I can test if it moves, well once I get my propshaft 😄

[GTSBoy]

On 6/13/2022 at 4:42 AM, Maruku said:

heat wrap the cats

Yeah, be careful with that. Perhaps heat wrap up to the cat but not the cat itself. Overheat a cat at your peril.

[Maruku]

On 6/13/2022 at 1:27 AM, GTSBoy said:

Yeah, be careful with that. Perhaps heat wrap up to the cat but not the cat itself. Overheat a cat at your peril.

Thanks for the tip, but isn't the cat working properly when at correct temperature? Hence they are fitted as close to the engine as possible and come with heatshields from factory with some insulating fibre in between. Reason I want to wrap them is that they are way back from the stock position so to pass emissions testing. What I heard is that the cats will melt if running too lean which would mean very high EGT. 

I might see how it will do with emissions testing, if it may struggle then I will consider wrapping but could do some EGT measurement and see what temperatures will be present. I believe the honeycomb structure is ceramic with deposited rare metals on the surface so I can determine the melting point.

 

[GTSBoy]

No. Cats have heat shields on them, usually mostly on the top, to stop their incredibly high running temperature from baking the crap out of the underside of the car.

They are placed close to the engine to heat them up as FAST as possible, not to the highest temperature possible.

[Maruku]

On 6/13/2022 at 9:00 AM, GTSBoy said:

No. Cats have heat shields on them, usually mostly on the top, to stop their incredibly high running temperature from baking the crap out of the underside of the car.

They are placed close to the engine to heat them up as FAST as possible, not to the highest temperature possible.

Got it, so probably some heat shield to protect the floor then, thanks for the good info!

[V35_Paul]

my 2 cents... My cats on my Fj Cruiser go over 800c 🥵 

[Maruku]

Bit of update.

Got a propshaft joiner made up in a machine shop to connect the shaft pipe to the new flange. Got the runout down to 0.3mm so quite happy with that. FSM specifies max of 0.6mm.

Jig I made up to get it done:

 

I will see if the prop vibrates at high speed cruising, if so I'll get it balanced. Changed the bearing and I expect the donut coupler will dampen some slight imbalance. Found a leak on my transmission sump so need to change the gasket but looks like I am almost there. Will post some more photos later this week. 

[Maruku]

Quick question or rather thoughts.

I am about to connect the stock airbox with a standard panel filter to the TB. Luckily the throttle body outer diameter is the same as the MAF so no worries there.

I have slight concerns that it will not flow enough, to be proven by measurement later. Just want to get the car running but it looks kind of silly with the short odd shape intake duct that I need there. Might look stock though

Ideas?

 

[Duncan]

So, standard throttle body and standard AFM/airbox from the engine? I've never had a good look at the cima packaging (covered in plastic covers of course), is it connected directly from factory? I know there are complex inlet runners but I assume they are post TB and therefore you have those in place.

Anyway, the engine made about 280kw from factory through that system, it is unlikely to be a restriction if you stick with all stock sizing. The focus was efficiency over performance of course, but having an overly small air inlet is not efficient either

[Maruku]

Standard throttle body but standard airbox from the V35. I only had a part of the stock intake duct that came with the Cima engine, connected to the TB with all those resonators and stuff. I ditched all of that cause it will not clear the strut turret.

I am hoping to make a bit more power with the much much free-er flowing exhaust and 4-1 headers. Came across some intake filter calculator and it seems the V35 panel might be a bit too small. With the minimum space left in the engine bay my only option is a CAI style intake with a cone filter somewhere behind the bumper. Wonder if I need to worry about getting the filter wet?

The CAI might give me better low-mid range torque as the duct would be quite long. At least that is how I understand the post TB duct working in that way. Short is better for top range.

With the stock V35 airbox everything is a bit too tight and had to chop off a portion of the box as well. Might be too much of a bodge..

If anyone has any experience with n/a intakes or any pointers?

Thanks!

[Maruku]

More progress.

I found a online filter cfm calculator, not sure on the math but the filter surface area calculation proved to be quite useful as well as the pointer from Duncan that the stock panel filter will allow 280bhp.

To put some numbers into perspective:

Stock panel filter is approximately 281x168mm which should be 472cm2.

Got a proram cone filter 150mm diameter and 125mm height. That equates to 578cm2.

So here is my intake solution for now.

And also got all things sorted in the engine bay, just minor details with the electric fan control and that's it!

Hope to start the engine this weekend, get it up to temperature and hope it won't leak any fluids

If not I will have my first test run!!!

Edited August 18, 2022 by Maruku

[Maruku]

Hey, just a quick update. 

I drove it over the weekend and it's mental! Loving the V8 sound and the torque 😆

Have had a problem with the MAF connection, I did not have the newer 6pin but the older 5pin MAF. There was a change in ECU connectors between 2004-2005 on the Infiniti M45 that I used as reference but Nissan Cima F50 never changed the ECU connector so both schematics confused me. Now the engine is running well but still showing P0113 so will do some measurements and check the live data to see what is wrong. Apart from that I had issues with VDC off and SLIP when turning, that ended up being the steering angle sensor that needed resetting.

Nearing completion after a longer break from this project so hope I get it on the road soon!

Will pop over a video later of the Skyline on the road. It's been a long project this one and lot's of stuff I have learned, mainly not to attempt something like this again! 😅 Way too much work to get it done alone.

[Duncan]

Great to hear, you've done this really quickly for such a complex project

[Maruku]

Thanks Duncan, I started the project in June 2021 so it took a while but also I did push it a bit and ended up being annoyed by the amount of work. But it's almost done 😄

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