Small pseudo-update

[mtcookson]

So, I've decided to go with a standard wet sump oil system. Not that I can't make the dry sump work, just that for the route I'm going as far as being a street car, it will be a bit overkill.

Due to that I'm going to try out "Tri-Y" headers. Supposedly the next best setup to a 180 degree header.

Lastly, I'm also working on a totally different boost setup which will be pretty exciting. I think there will be quite a few people interested in it. I'll leave it at that and give you guys some more info once I start piecing everything together.

Should be running NA before spring!

[Hodo]

So got a few questions seeing as my VH45DE has been sitting in my garage for the past 3 months.

Ok do you have any pictures on the header setup in the car. And what do you plan on doing with the intake? Oh and can you tell me what manufacture you are going through for the headers or are you inhousing them?

My 95 Z32 is coming up on borrowed time and I am looking at tring to get this engine in the car before the end of next summer. My goals are 500HP and close to that in Torque. All motor no turbo no N2O. I am sure it can be done with a decent header setup and custom intake with underdrive pulleys, larger injectors, better ECU mapping, and a better exhaust. And do you have any current pics on the project?

[SuperHatch]

My goals are 500HP and close to that in Torque. All motor no turbo no N2O. I am sure it can be done with a decent header setup and custom intake with underdrive pulleys, larger injectors, better ECU mapping, and a better exhaust.

I'm not usually one to knock someone's goals, but you really need to consider some other mods to get you there NA. The main one being cams. If you search around on this forum you'll find some options currently being worked out.

The only issue I see is that you may need to run such a wild cam that the pistons will need to be modified to clearance the valves. If that's the case, I would go with some aftermarket pistons anyway that are designed to give you some better quench, higher compressions, and that have sufficient clearance for cams with .500" lift...

[mtcookson]

I'll be making the headers myself. I don't have anything put together yet as I need to get the engine in for measurements before I start putting them together so it will be a while. Its relatively easy to do though. Its a 4-2-1 style. Cylinders 1 and 3 are connected, 7 and 5 connected, then you connect the two remaining pipes together to the exit. Same for the other side. 2 and 6 are connected and 4 and 8 are connected. That should make the proper Tri-Y header.

[Hodo]

I have been watching the cam debates, And I have been looking for cam options too... but all in all not many available for the VH45DE. I have done alot of research on this engine and I know it is capable of 500BHP NA. Its already a 280-310BHP engine (depending on your sources). With a good multi-angle valve job, better cams, porting and polishing 33% more effeciant intake and exhaust system and underdrive pulleys with larger fuel injectors, also upgraded twin turbo twin throttlebodies which have a larger area than the stock VH45 throttlebody. The engine by all mathmatical estimates would see an increase of at least 33% in power to a max of 50%. That would put it anywhere around 400-450BHP. This is without screwing with the inside of the block. I could always bump the compression ratio up to 11.0:1 but I dont want to do that. I would rather keep it factory settings... but I could also find lighter rods and pistons that would decrease the rotational mass around the crank thus alowing it to rev up faster and free up some horse power but that also goes way above and beyond my current timelines and budget settings. As I said I have done MUCH research into it.

Also thanks for the information on the headers. Hopefully I can get a freind of mine to weld them up for me once I get to that level. The funny thing is all the good welders I know are women......

[Mettler]

I could also find lighter rods and pistons that would decrease the rotational mass around the crank thus alowing it to rev up faster and free up some horse power

Have you read the SAE documents on the VH45DE ?

[Hodo]

I have read... but thats where the arguments begin. Some sources say that it already has a great internal setup. Others say that it can be improved. I belive the ladder.

[Mettler]

Results speak louder than text.

I know of actual real world examples of highly strung VH engines that rev out to 9000rpm & bounce off limiter on stock rods and handle it fine.

I personally won't be changing my internals for my 8000rpm street engine, that would be an unwise, unnecessary expenditure.

[elwesso]

IVe always said as a decent rule of thumb the VH should be able to take whatever you can throw at it N/A, outside of running crazy fuels.