450sx part 2

[gsracer]

actually a guy in the uk gave me the idea that was swapping a vh45 into a gtr.... I had thought about a modular ford intake but for the deal i got on this one it was to good to pass up

[sexcii-zenki]

dayum! i havent finished my VQ and now i wana do a v8 swap lol...lookz amazing

[gsracer]

got the materials...

[WYT R1CE]

That manifold looks nuts haha, I want to make a custom one soon, maybe once I go to boost it.

Glad to see you're still messing with the car!

[pandaroo]

who thought hmm... i think a Porsche manifold will work! i cant imagine how that was thought of lol. but looks sick none the least!

[gsracer]

made some progress...

[gsracer]

well I've measured and measured, and drawn diagrams, and gaskets and measured some more. it looks to be on point.

Final machining will be done today.


heres some pics

[4-20sx]

awesome... it actually looks like it woudl sit higher but i dont know lol

[gsracer]

well the finished product is gonna be 10mm lower than that, its being milled down as we speak. I wanted to make it higher on purpose. From experience its much harder to add material than remove it.

It also looks really tall because there are no valve cover on the engine. In the end it should either be as tall or slightly shorter than the stock one.

We shall see

[vas570sx]

lookin good dood

[4-20sx]

yea. im loving the top feed injectors!

[SicBastard]

What's the purpose of the Porsche intake swap? Just noodl'n around? Is it actually supposed to be worth some horsepower? Did you flow it vs the vh intake?

[slok6]

Jerry When you get this done will you produce a kit.. I really need one for my vh.. Let me know man! I am on v8nissans as well same name..

[gsracer]

Originally Posted by SicBastard

What's the purpose of the Porsche intake swap? Just noodl'n around? Is it actually supposed to be worth some horsepower? Did you flow it vs the vh intake?

No i didn't flow it. I don't know for sure although i hope it will make some more hp up top. Having said that i will be doing a before and after dyno comparison.

reasons i did this...

1. bored
2. top feed fuel injectors
3. aesthetics / packaging.
4. cool factor

who knows... it might be an epic failure in the end haha.

and no i won't be producing a kit.

[SicBastard]

Originally Posted by gsracer

No i didn't flow it. I don't know for sure although i hope it will make some more hp up top. Having said that i will be doing a before and after dyno comparison.

reasons i did this...

1. bored
2. top feed fuel injectors
3. aesthetics / packaging.
4. cool factor

who knows... it might be an epic failure in the end haha.

and no i won't be producing a kit.

Top feed injectors are a bonus. You can buy 8 top feed injectors meant for the v8 world for 1/3 the cost of anything meant for "imports", even if they are rated the same/look the same. It also looks like you'll be able to ditch at least a foot of intercooler piping... bonus. And plastic intakes usually weigh under 7 lbs, while most aluminum intakes weigh over 24 lbs... bonus. Being able to say that your Nissan swap is rocking a Porsche intake manifold/custom self-made adapters... Awesome!

Can't wait to see the new dyno sheets. I've got my fingers crossed for ya.

[future]

Just went through all 16 pages. Nice build

[gsracer]

so today was a nice and chilly day, went to the dyno to get a base line before the intake... made EXACTLY the same power i did at 6.5 psi but at 9psi. It was pretty strange. The maf was pegging 5.114 volts after 5500 rpm and i was hitting 90 % duty cycles around the same rpm. I would think it should have made way more power, i tried throwing some timing, removing timing, leaning it out, riching it, nothing seemed to make any appreciable differences. any one have a thought.

Here is my 9psi dyno from today, this made with in 5 hp of what i made at 6.5 psi....

[GSXRJJordan]

... on the same dyno, I'm guessing?

If the MAF is pegged, what's the engine management using for fuel table? Did you have a wideband on it too?

[gsracer]

yea it was the same dyno.. im on nistune, i can tune real time with it..


heres the a/f/r from the dyno, my aem was reading the same in the exhaust, more or less.





heres the link to the data log as well if anyone is curious


https://docs.google.com/spreadsheet/...3VLdy04aUltMUE

[gsracer]

back on topic... almost done..

[Dorifto Machine]

This swap is pure awesomeness. Looking forward to the end result!

[gsracer]

Here is the semifinished product. All thats left is massage (by hand) the ports for the injector indentation.

Its all bolted up here. I only messed up in i got the blind allen bolts slightly too long, ill exchange them tomorrow. They bottom out before going below the deck.


what a week....

[soreballz]

Way cool. I love seeing stuff like this.

[gsracer]

well I'm one of those people that gets bored and looks for things to do and even though I'm still waiting on parts to finish.. i though id go ahead and bolt it in.


started with this..







then




and then




looking better already...





at this point i tried to stick on the manifold however no avail... it was hitting the lip on the firewall and the thermostat housing.

so i had to bang that in a bit. and remove the thermostat housing for now until i figure out what to do with it.




and low and behold here it is sitting on the engine all bolted in just waiting on a few details.....













and finally the bad news... hood hits, its hitting where the hood turns down on the vent, id say i need to space it up another 1/4 of an inch and trim the area around the vent... i can however force it closed as seen in this picture.

[codyace]

That's pretty Dandy I must say

[GSXRJJordan]

I'd just trim it. I had to trim the vent of my BRS hood to clear the LS's throttle body, similar deal.

[tryangle]

The hood would look boss perfectly notched out for the intake runners.

[gsracer]

yea thats what I'm gonna do.

[bb4_96]

what are the fittings you used earlier on that looked like nickel plated aluminum? And the braided hose?

[OBEEWON]

This is so cool.