Custom crank pulley options for the VH45

[Ford Falcon]

Hey viewers,

I'm rebuilding my VH45 which will eventually end up in my Z31. I will likely be using an electric power steering pump in order to make sure I have enough room.

My question to you all, is there an after market crank pulley out there for the VH45, and if so, would it be worth considering?

Cheers,

Dave

[qsiguy]

Someone was working on an option for this and I believe Wes tried it out. Seems like it was shot down for various reasons, the primary one being assumed balance problems killing the crank bearing/seals or something. Not sure many details, this was quite a while ago. Maybe Wes remembers more details.

[T45]

The stock pulley is balanced for the VH in particular I believe. Money would be better spend on a NICO ecu or lightweight flywheel instead.

[Chrispy300]

How about in regards to running a supercharger or dry sump set up?

[T45]

What did Dixon do?

[John Dixon]

I had one made up for mine. Rear pully is hard anadised ali, front EN40B steel.

[Chrispy300]

What did Dixon do?

I should turn that into an armband

John, did you just have a machine shop knock that up for you, or is it more specialised than that? She still run nicely without the harmonic balancer? I have an ally pulley on the VG at the moment and have no troubles, hoping it's the same for the VH

[John Dixon]

I had it made by the company that made the dry sump pump. They will have the drawings so could re-create it but with $:£ etc I'd think you'd be cheaper getting it done in the US. Any decent machinist should be able to copy the stock one to make something up. The most tricky bit was getting the timing references exactly right.I've not run it up yet but the engine builder wasn't concerned about vibrations, runs lots of engines with very light pulleys (mine is <1kg). Bear in mind I'm not expecting 200k+ miles between rebuilds!Also, it was balanced with the crank as a complete assembly (hence the drilled hole)

[tmorgan4]

The stock pulley is balanced for the VH in particular I believe. Money would be better spend on a NICO ecu or lightweight flywheel instead.

I remember reading about this too. With each balancer being specific to each engine it's hard to just replace them since most of us don't have access to the balancing equipment Nissan does.

I'd like to replace my balancer since there are quite a few good size chips out of it, but replacing it with another junkyard balancer that was balanced for a different engine doesn't seem like a good idea. Balancing the whole assembly won't work either since mine is already put together.

[elwesso]

I have a custom lightweight pulley in my garage. It didnt really do anything that I could notice (I had a bunch of videos at one point in time as well as acceleration test data)..

IVe still got in my attic, probably will just hang onto it as a keep sake. It was made by mossy performance, i believe out in CALI somewhere. If theyre not anymore, they used to be a sponsor on NICO.

[tmorgan4]

Do you remember what the cost was on it?

[elwesso]

i think we were gonna sell them for about $150.

[craigztoyz]

Am I totally wrong here-

I thought that the washer/spacers on the balancer bolts were the weights that keep them balanaced? I notice that mine has a different thickness on each one, and assumed over the years, that that was the balanceing method.

[T45]

Those bolts inside the pulley are the balancing weights. They were balanced at the factory. I believe I read somewhere that all early VH's were balanced and dyno'd at the factory before they even made it into a Q.

[SuperHatch]

Is the pulley balanced or is the assembly balanced? I believe the VH is an internally balanced motor. That's why we can throw on VG flywheels without throwing anything off.

[craigztoyz]

Those bolts inside the pulley are the balancing weights. They were balanced at the factory. I believe I read somewhere that all early VH's were balanced and dyno'd at the factory before they even made it into a Q.

I have seen that over the years too, and believe its true from the sources I have seen, that was the story as to why the first ones where special or more powerful.

[T45]

I'm not sure if the crank pulley is part of the engine balancing or if the engines were balanced before the pulley went on. Maybe Q45Tech knows.

[midnightsliding]

bump****i would liek to get rid of this heavy turd. any more info.

[elwesso]

Ive got a bunch of videos somewhere.. I really dont think this is a worthwhile thing. If you are going to be using stock accessories, then use the stock pulley. If you're going very radical you're gonna need a one-off one anyway..

I got no noticeable change from the pulley.. I was very thorough with this, which is why the project didnt go through.

I think the reason that people with 4/6 cylinders is the crank pulley on them (which is probably about the same weight as it is on the VH45) is a lot more weight relative to the crankshaft than it is on the VH... in other words, the crank on VH weighs a lot more than a crank in a SR20, which means that the crank pulley is less of % weight on a VH than it is on an SR20. removing 5 lbs is a lot bigger deal on an SR than a VH as far as rotating mass.

[midnightsliding]

it just seems like if it was gone it would be awesome. its really heavy so i figured with this gone and a light flywheel its would be sweet revving V8. but ts just seems like everyone thinks its a bad idea so maybe not

[elwesso]

i dont think its a bad idea, i just think there are better areas to concentrate ones effort.

[Mettler]

With a lightened flywheel, the VH is already a sweet revvy V8, don't stress about the front pulley too much

[midnightsliding]

yeah. well see. i just want to get it in and running asap. im working on my bell hosing **** right now.

[Raxephon]

Out of curiousity, are there any other crank pulleys from Nissan that match or are really similiar to the VH?