PARTS ACQUIRED DURING THE MONTH OF APRIL
This month I took delivery of two new brake-related parts from Japan. The first was a set of later-model iron Twin Turbo front brake calipers, which I’ve already covered in detail above.
The second item, however, is the one I’m most excited about. It has the potential to significantly reduce future servicing time—particularly when bleeding the braking system—provided I can successfully retrofit it to my car. Based on the research I’ve pieced together so far, it should be possible in theory.
(Above) The package from Japan containing both brake components. As always, Jesse Streeter and his team did an excellent job ensuring everything arrived safely and undamaged.
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(Above) The contents of the package: a set of later-model iron TT brake calipers and a 1994+ ABS pump/actuator assembly.
If you haven’t already spotted it in the photos, the “mystery” item is a later-model 1994+ ABS pump/actuator. I purchased it as a complete unit, including all factory brake hardlines connecting the pump to the hydraulic system. Having the original hardlines intact is a huge advantage—it means I should be able to unbolt my original ABS pump and swap this unit in without needing to fabricate or modify any brake lines.
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(Above) The later-model ABS pump complete with 2+2 base plate and all original hardlines. These lines feed into the hydraulic distribution box, which connects the pump to the rest of the braking system.
The factory part number stamped on the identification plate is 47600-50P00, along with a serial number and the manufacturer’s name, Nippon ABS, LTD.
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(Above) According to Nissan FAST, part number 47600-50P00 was fitted to both NA and TT Z32 models from September 1993 through to October 1998.
As exciting as this purchase is, there’s one obvious issue: surface rust. The unit appears to have been exposed to the elements for some time, and corrosion has formed on several external components.
That said, I’ve dealt with similar surface rust before and had good success restoring parts to a respectable condition. The main challenge will be figuring out how best to submerge the assembly in Evapo-Rust (or treat it in stages) to remove the corrosion thoroughly. After that, I’ll need to apply a suitable protective coating to prevent future rust from returning.
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(Above) While the rust looks significant at first glance, it appears to be surface-level only.
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(Above) A close-up of the five brake hardlines that connect the pump to the car’s main hydraulic distribution box (located beneath the rear center section of the boot). After careful inspection, I found no kinks or damage to any of the lines, which is reassuring.
Next, I inspected the electrical side of the unit, including the main wiring harness and the internal relay box mounted on the rear of the pump. Fortunately, there were no signs of corrosion in any of the connectors, and the internal relay box looks to be in near-new condition.
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(Above) Research suggests that the three main electrical connectors are identical in location and orientation to those on early-model ABS pumps.
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(Above) Inspecting the internal relay box located at the rear of the pump.
I know some people may question the decision to modify the braking system in this way. Before the ongoing brake-bleeding issues began, I likely wouldn’t have considered it either. However, with no clear resolution to the bleeding problem so far, replacing the ABS pump could potentially eliminate a hidden internal fault. And if I’m going to replace it anyway, it makes sense to consider upgrading to the later-model unit.
The biggest unknowns remain:
• Can the later-model ABS pump be successfully retrofitted into an early Z32?
• If installed, will it function correctly?
As far as I can tell, this hasn’t been attempted before—so I may be the first to try this modification on a 300ZX Z32. My approach is simple: if it works, fantastic. If it doesn’t, I can revert to the original pump and share the results with the community so others know whether this path is viable.
At this point, based on the information I’ve gathered, the potential benefits outweigh the risks. Worst-case scenario, I return to stock. Best-case scenario, I resolve the brake bleeding saga and gain a worthwhile upgrade in the process.
By
DJ_Party_Favor ·
Nissan 300ZX Turbo Targa
White with Rare Black Unmarked 2+2 Interior
Tax Sept 02 & Test Nov 02
Recent Full Pro Respray
New Brakes & 4 Brand New Tyres April 02
Automatic Side & Popup Headlights
Reverse Parking Sensors
No Keys & No Door Handles – Button Under Mirrors
2 High Security Multi Frequency Remotes (Scanner Proof)
Almost Unstealable
Remote Ignition with Starter Switch
Full Closure On Electric Windows
Removable Glass ‘T-Top’ Roof Panels, Immobiliser
Stereo
A Very Fast Car, ££££’s Spent
A Real Head Turner
This Classic Sports Car Must Be Seen
Drives Superb
Very Reluctant Good Reason For Sale
£2995.00 ovno - 07776 142079
Wakefield, West Yorkshire
sdb@beeb.net