Nomad C4 chassis assembly

[chevynut]

I was incorrect, the supply line to the pump is the bigger line, and the small line is for the return. Even so, AN10 supply seems bigger than needed, except on maybe a dirt track car than never stops turning for the whole race.

Go search on "power steering pump fittings" or "power steering pump hose ends" and you'll see that nearly every one out there has an AN6 supply and an AN10 pump inlet. Then go search on "power steering reservoir" and you'll see that virtually all of them have an AN10 outlet, with only a few that have AN8 outlets. Again, you just don't understand the problem. The reservoir I bought has an AN10 outlet as most do.....call Concept One and tell them they screwed up on the design.

[chevynut]

Weird, I just noticed that this thread had started with the title of "Firing up the 502", and now it's not.

No it didn't. Go take another shot.

[chevynut]

I received the Concept One reservoir and DAMN that's a nice part . It's a fully machined billet reservoir with a nice heavy, baffled o-ringed lid that screws onto it. The inlet line has a custom-cut AN6 fitting that has a tee on it inside the reservoir, I assume to help with turbulence of the incoming fluid.

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Once I put the AN10 90 degree hose end on it, it barely fits in the space I have over the frame rail. Also, in order to mount it you have to install screws from the backside of the panel, which I can't do since the radiator is on the other side. I tried installing the reservoir on the inner fender and it needs to sit too high for the 90 degree hose end to clear the frame. So I made a mounting plate and installed it on the reservoir mount, and now I can screw it on from the reservoir side.

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This is about where it needs to go. I got 90 degree AN10 hose ends for both the reservoir and the pump, but I don't think they're going to work. The hose comes off of the reservoir and runs right into the serpentine belt. So I'm going to try a 45 degree hose end on the reservoir, and a 120 or 150 degree hose end on the pump after I make the new o-ringed fitting. The hose is big and hard to route, but I'm sure glad I got rubber instead of teflon. The rubber is a LOT more flexible. With the 45 and 120/150 fittings, the hose will go down under the serpentine belt and back up under the pump to the inlet. Then I can route the AN6 lines which I already have made up on one end.

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[chevynut]

I would be willing to bet that a Chevy VSS sensor will screw in to the port on the transmission.

I haven't looked for one, but other guys have and have not been able to make anything work. The Chevy VSS is a 2-wire sensor, and the Dodge one is a Hall-Effect 3-wire sensor so they work differently. I don't know if the ring on the tranny tailshaft has to be different for one or the other.

The Chevy connector is pretty widely available. Sold as a pigtail, but you can probably buy the connector and terminals so that you can do it without wire splices. It might even be the same connector as the Viper. Worth checking out.

Trust me, I've looked at every available connector and NOTHING works on the Viper VSS. I called guys who sell all sorts of weird automotive connectors and they can't find one. Even Wells doesn't know what it is. I would call Dodge but I know I'd get a run-around so I won't do it. I ordered the mini-connector I linked and it was only $14 so that's what I'm going with. The Viper VSS for this particular tranny is expensive, but I don't know how it's different from the other Viper VSSs.

On the p/s loop, most Chevys use a 3/8" inverted flare or metric o-ring line for both pressure and return to the reservoir.

That's what mine is. The pump pressure line is AN6 at the pump outlet and the rack and the line from the rack to the reservoir is AN6. ONLY the line from the reservoir to the pump inlet is AN10. If you look inside the pump inlet it has a pretty large hole. An AN10 line is only .500" ID and the inlet to the pump is close to that size.

I think I'm going to have to remove the pump to press the new fitting into the inlet once I machine it. I sure thought there would be threads there.

[chevynut]

https://www.thirdgen.org/forums/tran...vss-wires.html

One guy says you can supposedly get the pigtail from Dodge....never tried them. It's $79 . And the GM VSS doesn't fit according to that thread.

Also, the Viper VSS outputs 10 pulses per revolution. I still don't know how to interface this to the VHX gauges, but I'm sure Dakota Digital has dealt with this before.

[Rick_L]

The Dakota Digital won't care what the number of pulses/rev or /mile is.

[chevynut]

The Dakota Digital won't care what the number of pulses/rev or /mile is.

I know the VHX system is programmable to the number of pulses per mile, but I'm wondering about the signal itself. Lots of guys have had problems interfacing the sensor to electronic speedos and I even found out on an LS forum that the Dodge wiring diagram is WRONG. One guy said he could only get .2V out of it wiring it up like Dodge says to, and I'll bet the VHX needs more of a signal than that. The sensor is made by Honeywell/Micro Switch and their spec for the location of the signal wire is different than Dodge's. Dodge says to wire 5V to the sensor but you can go all the way from 4.5V up to 24V according to the spec sheet for the sensor. So once I start wiring it up inside the car I'll call Dakota Digital and see if they can give me a definitive answer.

What the hell would I do without the internet?

[MadMooks]

That billet cap is sweet! You gonna polish it???

[chevynut]

That billet cap is sweet! You gonna polish it???

Yeah I'm impressed with the design and quality of the whole reservoir. They offer it polished for a few more bucks but I figured I'd have to re-polish it anyhow after messing with it, so I got it with a machined finish. It looks cool with the machined finish but I probably will polish it since everything else around it is shiny. Should be easy to do.

They offer it black anodized too and I would have gotten it that way if I had black hoses and other black stuff in the engine compartment.

[MadMooks]

Parts like that really get my juices goin. Gonna look killer polished