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Been a while since I’ve posted here, and this might be a bit long, so apologies in advance …… I’m looking for specific information on the old Froude G4 hydraulic dynamometers, I’ve spent a fair amount of time researching this but it’s a bit of a desert out there So if you have your comments...

While not directly answering the question, maybe something like this? www.mikalor.com/eng/supra-heavy-duty-clamp-eng "It's not always a case of learning more, but often of forgetting less"

My instinct would be to get a slow taper machined (pref ground) on the rear engine crank nose with a custom corresponding internally tapered flange with lugs to take the donut coupling out of a hide grade steel in one. Sweat the flange onto the crank, you may need to make up a thin split steel...

Thanks, but the bulk of the armatures I test are from starter motors, and the low resistance of the field would not make this feasible. "It's not always a case of learning more, but often of forgetting less"

I occasionally have a use for an armature growler, but not sufficient to actually purchase one. Assuming that they pretty much worked on the same principle (the armature sitting in the vee of an alternating current electo-magnet) I recently employed a portable Magnaflux yoke, mounted upside down...

Predominantly improved low lift valve airflow. 30 deg valve/seat angles are often used on lower speed engines (such as diesels) though not exclusively, with moderate cam events, where the superior low lift flow (over a 45* seat) can improve torque. I don't know of any quicker seating benefits...

Is this just one of those engines that wears cams (as it would seem), or has something happened (lower volume/blocked oil feed to the heads/known secondary problem....) that needs fixing prior to replacing 4 camshafts and 24 finger followers? Haven't pulled the cams yet, but envisage re-using...

Thanks Mike.............. I've been looking out for a manual, including eBay, but nothing has come up. Obviously it's the service/repair field engineers manual that would be of most use. John. "It's not always a case of learning more, but often of forgetting less"

Sorry if this is in the wrong forum, but there doesn't appear to any specific one on air compressors. If it's not please feel free to direct me to the correct one. I need repair/rebuild/overhaul information on the "Hydrovane" (rotary vane) type compressors, specifically the 13/23/33 series. I...

If possible reface all the contact points with silver tips. Both the fixed contacts, and the moving contact. Machine down the existing parts and braze on silver facings. Re-machine. Assuming they are of adequate area already this should give you the best compromise. Some industrial and higher...

Hope it is appropriate to post this here...... I'm trying to gather information as to possible faults, regarding the above, so I am better prepared for a looming problem. The meter is an Ampy Automation UK device, type 5196A, if that helps. Single phase 240v. According to the meter our...

Benta....................Thanks for the graph. It follows closely the one I have, so that is one less variable. TVP................. Perhaps asking for the shear modulus was the wrong question, for here is the enigma: The last thing I want is for it to act like a spring, quite the contrary, as...

The critical alloying elements are approx 1.1% Carbon, 0.35% Manganese and 0.40% Chromium. Through hardening, about 65-68 Rockwell quenched. I would like to use as quenched (and will test in that state) but am a little wary of brittleness, hence thoughts on tempering. Thanks for the replies...

I've got the hardening and tempering information I need regarding the above, but have been unable to find any info regarding hardness (thus tempering temp) versus sheer modulus. Is it wise to assume a linearity? I intend to harden and temper from different temps (probably just in the 180deg to...

Thanks for all the replies, some interesting takes on possible causes. I think Romke is probably closest. I guess what may have triggered the conversion of soot to tar is the fact that three of the injector base seals were "blowing" into the same area, for some time. And finally one last...

Greg, I too would be interested in anthing you have as I'll be doing much the same thing with a water brake, mine an uprated Heenan Froude G4. Regards, John. "It's not always a case of learning more, but often of forgetting less"

Must admit not quite seen anything like it before. Mercedes Vito, fwd 4cyl common rail diesel. In the recess above the cam cover (and below the plastic "shield") where the solenoid injectors and breather/seperator sit, the whole lot full of tar. Not carbon or that spongey black goo you find in...

Statorwinder.............. Internal fan alternators actually draw the air in from the front and rear and, via the centrifugal fans, expel it through the stator windings. This is how they are cooled. The fan on the rear of the rotor often has more/larger blades, obviously biasing the air flow to...

And in addition to the above the 351W is around 50lbs heavier. A fair chunk of weight. Depending where in the world you are buying a 347ci kit would be a better option and allow you to retain most of what you already have. Designed for putting in a 302 I can't see any reason it won't go in a...

Reducing the crush to increase bearing clearance is NOT the way to do it. In fact depending on the intended use, accepted wisdom leans towards setting the housing dia at the lower end of the manufacturers specs, especially for a perf build. Most manufacturers have "graded" bearings available...