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Hr31 Hicas Question

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HR31COUPE

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I have a HR31 Skyline fitted with a RB25DETneo and I'm in the process of having more work done to my car, this includes a custom front entry intake plenum and having the HICAS rear wheel steering locked out.

My question is, on the drivers side of the engine bay there is what looks to be a valve sort of thing that is connected to the steering rack and to lines that head off to the rear of the car for the HICAS obviously.

Now to the more technically inclined people, seeing as I am getting the hydraulic rams on the rear rack replaced with solid locking bars, would it be safe to remove the valve thing and associated lines from the side of the engine bay and just block up the feed and return holes in the rack. To me it looks as though all this device would do is control how much fluid goes to each of the rams at the rear.

Basically the main reason I want to know if it can be taken out is so that there is more workable room for the plenum. I also am using the standard RB25 power steering pump so I'm thinking I should even be able to swap my steering rack with an aus spec one and do away with the entire HICAS system.

I also have this posted on the R31 Skyline club but I thought I would try here too to see if anyone has played around with the HR31 HICAS system before.

post-12742-1125650675.jpg

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https://www.sau.com.au/forums/topic/86270-hr31-hicas-question/
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kwazza11 Rising Star

kwazza11

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Posted (edited)
I also am using the standard RB25 power steering pump so I'm thinking I should even be able to swap my steering rack with an aus spec one and do away with the entire HICAS system.

answered ya own question there dude! Thats the best option really, as from memory the rack itself has the feed lines to the rear rams, that valve block with the electric solinoid in it is just the means to control the flow. also the aus rack is probably about 1-2kg lighter than the jap hicas one so there should be no question! :P

also as for replacing the rams, i've done this on my gts-x and its all good but still allows a small amount of east-west movement, i think the best way would be to remove the member bushes and get solid rubber or noly ones made up, like the gibson one. ie:

post-1089-1125657162.jpg

Edited by kwazza11

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