180 Degree headers on a VH45DE.

[SeanDean]

Hrmmm, well I will still give it a shot on the 41, but it turns out my spare motor got buried under 3 months of other peoples work while Ive been gone... so it will have to wait a bit.

[Mettler]

Not possible, think about where the oil drain holes are in the heads.

[T45]

Just hook your starter up backwards and let er' eat...

Might be hell on the timing chain tensioners though.

[doctorchee]

hi all

just some update..

sorry for the picture, i did not bring along my digital cams. however, my next trip there will surely bring one.









actually i think all the headers are ready, but they did not put it up for me to see... will make them do so next week.

all comments are welcome

[David Steele]

Great I cant wait for you video for you to fire it up with the configuration.

[doctorchee]

some more update. still via hp camera. becuase its a drop by trip to there during office hour when meeting customer. kekeke

8-4-2-1-2

8-1.75inch4-1.75inch (turbo inlet twin scroll)2- down pipe from turbo (2.5inch)1- 4 inch muffler with 2 outlet2 - 2.5inch pipe straight through all the way to the back fo the car











almost everything is complete. sorting out the return line back to the oil pan. must take out oil pan, make 2 hole for the oil return. intercooler still on order.

[Florida240sx]

If you don't post a finished project I think we will all go crazy. At least I will. Can't wait to hear it

[Mettler]

This has to be one of the most elaborate exhaust systems I've ever seen!

[doctorchee]

some update.

exhuast completed.

water intercooler in progress.

have not start engine, however, new ECU will be in 2days time. haha









will surely make a short video for the car when it fire up.

[T45]

Wow! That is complete insanity. Looks like you'll never have to worry about cold feet...

[maxnix]

PLEAES CONFIRM THIS below

VH41DE

radiator fan 2 1 4 3 6 5 7 8 flywheel

thanks everyone...

Regrdsderrick

Your banks are reversed. Odd are left, even right. Hence your 7 and 8 are actually correct.

See the FSM.

[maxnix]

There's actually an easier way of doing this guys, especially for you doctorchee...

Let me go and find some pictures of 60's Grand Prix motors to demonstrate.

It's pretty unconventional, but I think it's exactly the kind of thing you will be into doc!

Those cars and the early Le Mans Ford V8 had exhaust in the middle of the V and intake on the outside, so it was a lot easier to execute the "bundle of snakes" exhaust. Tough to do on a motor designed with the intake valves inboard side of the heads in the V configuration like most street engines.
Modified by maxnix at 4:30 PM 11/24/2007

[doctorchee]

i have reversed it..

and the exhaust is done with the correct spec.

guess things like helping each other to check their work is the way to go here.

thanks.

[doctorchee]

Those cars and the early Lemans Ford V8 had exhaust in the middle and intake on the outside, so it was a lot easier to execute the "bundle of snakes" exhaust. Tough to do on a moter designed with the intake valves inboard like most street engines.

Hi thanks a lot for your info.

btw, i think its not difficult to do the bundle of snakes. the most difficult part is place constrianed. which i have many place.. haha

as for swapping the cyclinder head, personally i think its much more work than the bundle of snakes. and for engineering point of view, there may be more problem arise that i can think of.

anyway, its always up to individual... thats why each of us trying to put in ideas and info to this forums.. to share.

snake will be heated up and alive soon.. but before that, i have to do heat shied on quite a lot of parts and the snakes gets too near to many things like brake lines.. fuel lines etc...

[doctorchee]

Dear All

due to $$ running low, so the progress also slow...

however, please find below some of the update for my water intercooler. once its ready, it will be bloted up together with all the exhaust which is completed but not yet bolted up because my car is always parked outside the shop, which they worry the turbo will be lost. as such, they test fitted and take out everything to keep.

I also brought a 100mm TB.The original TB is disgarded and a pipe will join from the original intake manifold to the TB which will be located as near to the water intercooler as possible. so this actually increase the plenum volume, which i think its necessary for a FI application.

Can anyone out there advise this TB set up is fine? i do not see anyone have such setup, however, this is the most easy way out to increase the plenum volume and also change to a bigger TB. cheap and easy while retain equal lenght.









Please give comment, all welcome, so things can get better.

lastly, if so happen that my boss is seeing this, please note that i went there during lunch time and i have work serveral overtime without claim, so guess extend lunch time a bit to see my car should be ok right?

thanks.

Derrick (awaits to wake up the beast in 2months.)

[one ton garage]

Wow I'd never seen this thread before.. not sure how I missed it, as this is always a very cool topic. Just wanted to throw an FYI out there... original Ford GT40s ran 180deg/paired headers, so it's not uncommon to see a number of GT40 kit cars/replicas with paired headers on their Ford and Chevy small blocks... BUT... in the mid- to late-90s there was a company in Japan that made GT40 replicas using VH45s with 180deg headers. I heard they did sound awesome, and I had a pic of one somewhere, but can't seem to find it. Afaik, the company might no longer be in business unfortunately...A real GT40 restored:

[elwesso]

Wow I'd never seen this thread before.. not sure how I missed it, as this is always a very cool topic. Just wanted to throw an FYI out there... original Ford GT40s ran 180deg/paired headers, so it's not uncommon to see a number of GT40 kit cars/replicas with paired headers on their Ford and Chevy small blocks... BUT... in the mid- to late-90s there was a company in Japan that made GT40 replicas using VH45s with 180deg headers. I heard they did sound awesome, and I had a pic of one somewhere, but can't seem to find it. Afaik, the company might no longer be in business unfortunately...A real GT40 restored:

Thats pretty intense Van, please try and find those pics!!!

[darinz]

thanks a lot pal.

yes it will be swivelled or rotated. i actually try to put the turbo higher so as the oil can be reutrn via a higher attitude.

you are sharp... thanks.

will update more photo next week.

now busy looking for a ECU. properly a autronic Sm2. a used 1 would be perfect.. $$$ running low fast...

I'm using an Autronic SMC and CDI. It has less auxillary outputs so you need to control some things without using the ecu but gives very good tunabilty and reliabilty.If I was making the choice between SM2 and SMC + CDI then for boosted the CDI is a big advantage and it gets rid of the factory ignitors etc so simiplifys wiring. I'm using thermo to control fans, and will be using a frequency switch for the cams (when we start switching the cams). The ecu is control boost but otherwsie it only does engine functions.

And now tha I've read the whole thread it appear you've done you ecu already, but this may help someone else.

[TreadStone]

Guys in a NutShell:

1) Whats with the 180Deg Headers for the VH45DE?

2) 180deg (flat crank) is great idea, love it. Is that why u guys all talking about the 180deg exhaust?

3) Who sells flat cranks for the VH45DE?

4) whats the Difference between VK45DE and VH45DE?

Thanks

I'm sorta looking into the motor thats suppose to be in the 2009 FX50.. Bad *** SUV and looks like bad *** motor..

[Mettler]

Hi TreadStone... please spend some time searching and browsing the forums, the majority of your questions have already been discussed.

1. There's nothing with 180deg headers for the VH45DE.... I'd expect they'd change the exhaust note a bit, with an immeasurable performance difference. They're a pretty impractical concept because they wouldn't fit in 99.99% of VH45DE fitted vehicles due to needing to cross over, there's simply no room.

2. Flat crank: as seen in Nissan's race motors.

3. No one, you can't get one. Also, the motor isn't designed with balance shafts, so fitting a flat crank to the VH45DE would probably not work the best anyway.

4. VK is the newer generation V8, with no known engineering improvements. The older VH tends to be beefier and stronger, excellent considering it's much more common and cheaper. I can't think of any reason to use a VK45 V8 when you can get your hands on a VH45DE.