Hydroboost Problem.

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Sep 12, 2003 | 09:10 AM

#21

Brutus

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Drifting

Joined: May 1999

Posts: 1,610

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From: Goulburn, Australia NSW

Re: Hydroboost Problem. (Hydratech Braking)

Quote:

"unfortunately as it's a dedicated 5/16" line from the steering box"

Hmmm - the 5/16 return line sounds like the culprit, to cause ps system back pressure. Every OE line I have ever seen is 3/8, and for a good reason. How in the world did the return line end up being 5/16 ?

It's the standard return line size from the Toyota steering box that's fitted to the car during it's RHD conversion. I have no other option in this case to alter that dimension. All I can do is try to re-route the return line as you've recommended and hope that it gives me a better result.
Edit...The other option I have in this case would be to increase the return line diameter to 3/8" a lot earlier towards the steering box if that could be considered a possible solution, but I cannot alter the intiial line size exiting the box at all.
The return line from the assist unit has always been 3/8" leading back to the pump so there has been no alteration to that part of the plumbing, just the suspect alignment of the T piece in this configuration.

[Modified by Brutus, 12:32 AM 9/13/2003]

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