What does it take to make a Nypex?

[kinger]

Looking at snow west lots of guys are making nypex's with a apex motor in a nytro chassis however it looks like its not as bad as one would think.

What does it take?

Diamond s makes a adapter plate that bolts to the apex tunnel and lets you use the apex jackshaft, chaincase, and mount the engine to. Then you can use a stock subfame and steering hoop from a nytro. Then you need the steering system, front suspension, etc from a nytro I 'think'

Thinking of a budget build anybody put some thought into what it actually takes to make one? Where do you run the exhaust? Would a SC mount in there or are you forced to use a turbo with a custom header to get it to fit?

I put this in here since most of us are mechanical and I'm guessing some are thinking of this.

Thoughts? Benefits? final weight difference?

 

[dirk_03]

I know they are saying it doesn't just fit in there. I think it has alot to do with the gear reduction. If you recall the apex/rx1 bulkhead is exactly the same and both the 4 cylinder and 3 cylinder fit in there. I actually think that the phazer motor would fit as all with the proper spacers. I would like to find a rx1 motor and a nytro chassis and give it a try.

Kinger, buy two chassis, and we will each buy a motor and I will put them together and Keep one. LOL.

I think even without boost it may be extremely fun.

 

[kinger]

I'm just not sure what all is involved with it and why I would do it.

Not sure if your better off starting with a nytro or a apex and what you need from each to make the sled.

On one hand it sounds cool on the other it sounds cheaper to turbo a nytro. Not sure.

 

[irondave86]

I would think it would be hard to do a S/C nypex, but if you did I'd think you would need to start with a nytro S/C kit and custom build your intercooler for the apex motor.

I think it's a really cool idea but I wonder if the gain is really worth it? Is the apex motor that much better? Or is it just that so many guys have tapex's with a pile of money in their built motors and turbo kits that its just cheaper for them to rework their header and intercooler and reuse what the have vs. Starting over with the nytro motor and turbo kit?

 

[dirk_03]

I think it would be worth it to make big power. I imagine that the apex motor is making about 40 more hp at 18lb of boost than the nytro motor. And even stock I am sure the nytro chassis is lighter. So if you took the 150 hp apex motor and put it in the nytro chassis I am sure it would be alot better sled. Don't get me wrong I have a 3 cylinder. You can just make more hp out of 4 cylinders. They have smaller bore(less prone to denotation), They have 3 exhaust valves, Probally flows a little better. And they run alot of rpm which is fun. . . . And personally I like the rx1/apex sound more.

 

[TurboTime]

I think it would be worth it to make big power. I imagine that the apex motor is making about 40 more hp at 18lb of boost than the nytro motor. And even stock I am sure the nytro chassis is lighter. So if you took the 150 hp apex motor and put it in the nytro chassis I am sure it would be alot better sled. Don't get me wrong I have a 3 cylinder. You can just make more hp out of 4 cylinders. They have smaller bore(less prone to denotation), They have 3 exhaust valves, Probally flows a little better. And they run alot of rpm which is fun. . . . And personally I like the rx1/apex sound more.

I do not agree with this statement. IMO, and has been proven that The Nytro motor holds up much better than the Apex motor under boost. Major mods have to be made to each motor if you plan on running high boost anyway, I.e in excess of 20, 30, and even 40lbs of boost. You have OSP racing, all they run is the Nytro motor and have multiple world records. But then again you have Smith racing, asphalt, that runs a higly modified apex motor, liquid aluminum in the water housings and welded head studs to support the 600+ hp running 50+ lbs of boost.
Would be an interesting project but not a smart one.

 

[dirk_03]

hmmm I think you may wanna check again I don't think OSP is running the nytro motor in there BIG drag sleds. They run the nytro body work but I am pretty sure they run a build 4 cylinder. I have been wrong before though. They do build a nytro kit as well, but I don't think they run it on the BIG GUNS!

 

[dirk_03]

This is a screen front a one stop video. This is definately a rx1 or apex motor. If you watch then entire video you can see another sled in the background with a the 4 cylinder as well. These are both in fully built up chassis. The only one I have heard of making 400 hp in the nytro is Hurricane and I didn't ever hear If he quite made it to that mark or not.

I think on some of the hill drag sleds they race they use the nytro but I don't think that they are pushing them over 30lbs of boost like the apex motor.

There are definately guys on Ty4 that can answer questions like these and I am sure will step in maybe?

 

[kinger]

Guys on snow west do this all the time I better ask over there I guess.

 

[dirk_03]

There is a Nypex on there right now that is in the stock nytro bulkhead. I do not know what is all involved in making it fit but It looks sweet. I think Impulse did the work to make it fit. I know there are others out there as well but some are diamond S bulkheads. Not everyone that builds sweet sleds posts the crap out of the forum.(like Me). I just get bored.

 

[MRFUSION]

I built my own using Scotts front bulkhead and rear tunnel. Lots of work if you take pride in it. The little things like fitting the Apex wiring into the Nytro chassis, the cooling system and the plumbing to fit under the Nytro hood. The stock Nytro front clip has to be modified for the water pump then reinforced after. It took lots of hours and the pay off is worth it for sure. I had a machinist buddy and a welder on call at all times for the little things. I can post some pics if someone is interested. Shad

 

[Zipperno]

You dont need a new bulkhead.

The modifications are:

Modify battery box
Grind lower engine mounts
modify water pump housing

Then you should manage to mount the apex engine.

All the rst is just making stuff fir within the nytro body, like oil tank etc.

 

[kinger]

Really its that simple? Thank you for the picts and time to write up! What do you like about the nypex that you didn't like with nytro or the apex?

 

[Zipperno]

Really its that simple? Thank you for the picts and time to write up! What do you like about the nypex that you didn't like with nytro or the apex?

A friend of mine is building one...

Dont get me wrong its still a lot of work, but to get the engine in the chassis is pretty straight forward. Every little thing has to be modified or redone, like cooling, oiltank etc. Forgott to mention you need to modify the front tunnel cooler also, or delete it.