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As engine warms up, the temp needle rises to spang in the middle of the scale. After a few minutes of driving, it rises to very near to the top (somewhat, but not entirely, in the red), sits there for a minute or so, then marches back down to sit in the middle. Repeats every 4-5 minutes. New...

Long story short, I currently have a Range Rover 3.9l engine (9.25 CR, Crower Stage 2 cam) in my 1971 NADA P6. I am using two SU HIF6's for carbs. I made a few earlier postings documenting adventures with tuning. The leap forward that I report here comes after acquisition of an Innovate...

1971 3500S NADA dual system. Brakes were completely redone about a year ago, cleaned, lubed, new rubber everywhere etc. Symptom is after braking the car feels like the brakes are dragging--it moves from a stop with the accelerator, but slowly. After a few seconds things even out. Or, when...

The pistons in my HIF6 carbs (AUD623) have a rectangular slot milled in the bottom of the piston, about 2 mm deep, 4 mm wide and parallel to the airflow. It goes all the way across the piston. However, there is a steel insert in the middle of the piston (into which the needle bush is fit) the...

My old water pump (1971 3500S NADA) leaks. Yep, it's the one with the viscous coupling and big fan (AC, y'know, which is long dead). I have a replacement pump with the big aluminium casting on the nose. The two pumps look essentially the same, though it appears that the new one has a slightly...

1971 NADA 3500S--had to replace my PAS lines, which entails removing the entire front from the car. During this process I removed the (tatty but more or less intact) front motif by gently prising a couple of u-shaped metal grabbers from the (smooth, about 0.2") posts. The operation being now...

Fiddling with my engine, which doesn't run right. Scenario is 3.9L replacement mill (original engine gone gone) with Crower 50230 (mild boost) and HIF6 carbies. I am using the original distributor on this rig. It is a 41277B. Even though timing at idle is set to 6 deg BTDC (as per manual)...

I have been struggling with my 1971 NADA 3500S for some time. The original engine blew, was replaced (before I bought it) with an Oldsmobile engine, I subsequently replaced with a 3.9L from a 1982 Range Rover, but that engine does not work well with the bodge of a fuel delivery system that I...

The PAS hoses on my 1970 3500S were leaking, so I got a new set from JR Wadhams. The high-pressure hose is fine. The low-pressure hoses are made of a (reinforced) material that is so stiff that I cannot get it onto the nipples. It will not stretch over the lip. I have struggled with this for...

The short version of the story is that my 1970 NADA P6 suffered a carb swap (to HIF6's) and when I got the car the accelerator linkage was a total bodge. The BW35 tranny cable was not even connected. I have made efforts to rationalize the carb linkage, which required fabricating a crank arm...

I have recently declared victory for the 3.9 L transplant into my 1970 NADA 3500S. The procedure was necessary because when I received the car it had a '62 Oldsmobile engine. The Olds mill is lacking many of the mounting bosses for both engine mounts and accessories, and stability was dubious...

1970 NADA 3500S The fuel filler has a conical insert into which the filler nozzle fits. The insert ultimately bends towards the tank and has a corrugated hose attached to it (about a foot long) that takes the fuel past the outer rubber casing joints and into the tank. The problem with this is...

NADA 3500S, LHD. My PAS pump leaked a few drops each day. It was coming from the seal. I removed the pump (non-trivial and very messy) and replaced the seal with the two-lip part that is now being supplied. After buttoning everything up, it still leaks, about the same amount and from the...

I have gone through my BW35 rather thoroughly and fitted a new pan gasket. As supplied it was composition cork, about 3/32" thick. I sealed on both sides with aviation permatex and torqued the fasteners to whatever the shop manual said. Now I find that I am getting seepage (enough to drip)...

I have kept the original manifold and HIF6's on the transplanted 3.9L mill in my 1970 3500S, which I have just now started running. The engine seems to run rather lean at idle even with the jet adjustment screws all the way clockwise. The carbs have the original metering needles--me being old...

I have transplanted a 36D 3.9L LR engine into my 1970 NADA 3500S. The original engine had gone walkabout and had been replaced with an Oldsmobile mill, which emphatically did not fit. I've had the car out on the road and the new engine runs reasonably well, though I have some tuning issues to...

I am trying to piece together my ride (1970 NADA 3500S) from a bodged conversion, replacing an Oldmobile engine with a 3.9L. I am using the original intake manifold. I am trying to sort out the piping. There are three small vacuum ports on this manifold (In addition to the brake booster)...

Our favourite rides come equipped with a starter that has a solenoid with a separate pole to handle delivery of unadulterated 12v directly to the coil (bypassing the resistor) during start. Unfortunately, the starter for my ride (1970 3500S) is long vanished due to a series of unfortunate...

This may be relevant only to NADA 3500S cars. From 1970. Built on a Tuesday. The brake warning light lines that go to the reservoir on the servo side (right side, for these export cars) has four wires. One is a ground. Two are married to one connector, presumably reflecting parallel lines...

I have a big problem. I have probably the last car on earth with the rear sight glass filler tube for the BW35 transmission. The white "top hat" sealer cap is plastic, which has become brittle over 45 years, and it broke. I doubt that an epoxy repair will hold to the material, and the tube...

This is a matter of curiosity more that anything else, and I'll bet that Harvey can answer it. The speedo gear on the output shaft of my BW35 box is a slip fit. Nothing appears to hold it in place save the surface tension of the lube. How come? I notice that my speedo is kinda bouncy, though...

The air intake for the heater/AC unit on my 3500S NADA has a rubber drain hose. The hose is about 3/4" ID, has a rubber flange for attachment to the box, then an immediate right angle bend. What's left of it is about 10 inches long. It has crumbled. Can anyone suggest a source for...

I am stumped. I am transplanting a 3.9L into my 1970 NADA 3500S. The engine I removed was an Oldsmobile, so all of the accessory mounts for that were improvised. The good news was that the DPO (Dreaded Previous Owner) a least threw some of the original brackets into the boot, so I have them...

I am transplanting a 3.9L 36D engine into my P6. I have what appears to be an original P6 oil sump (has a notch in the rear to permit passage of the exhaust pipe). There was no dipstick with the 36D engine, and it would have fitted a different sump anyway. I do have a dipstick that came with...

Since the engine I removed from my NADA P6 was not a Rover engine, there were no lift brackets attached to it. The DPO (Dreaded Previous Owner) at least showed enough courtesy to put some removed brackets in a box that was in the boot. Where do they go? There is one bracket that, according to...