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Posts by Mark Rosenbaum
532 postsShowing posts 41-80 of 532

Engine & Transmission > Oil Pressure Relief Valve (14 replies - 8875 views)

When I fixed my car's oil pump some five or six years ago, I used 10w40 motor oil to lube the various surfaces, anti-sieze on the bolt threads, and a ...   03-04-2007 02:11 pm

Ignition > Failure to start! (7 replies - 8197 views)

Bill, I hadn't thought of going that route -- too simple and obvious an approach, perhaps. The +12 volts to operate the solenoid could come from ...   02-10-2007 05:39 pm

Ignition > Failure to start! (7 replies - 8197 views)

Bill, what you suggest is quite easy to do using almost any automotive-rated switch (such as a pushbutton or momentary-contact toggle switch).  The details vary slightly ...   02-10-2007 03:34 pm

Engine & Transmission > Oil Pressure Relief Valve (14 replies - 8875 views)

Oil pump gaskets are supposed to be available in several thicknesses.  According to the parts book, these are: JH P/N 94097 - Lotus P/N unknown - 0.001,5" thick ...   02-05-2007 04:47 pm

Engine & Transmission > Oil Pressure Relief Valve (14 replies - 8875 views)

To check rotor to rotor clearances, you can use a Plastigauge or a gauge using wires of various thicknesses (like a spark plug gap gauge).  For rotor ...   02-05-2007 01:56 pm

Engine & Transmission > Oil Pressure Relief Valve (14 replies - 8875 views)

AFAIK, while there's an o-ring in the closing cap, there is no gasket involved in the oil pressure relief valve itself. If the gasket you're talking ...   02-05-2007 03:16 am

Electrical & Instruments > Switching Wiper Motor Mounting Location (5 replies - 5037 views)

According to the parts list, LHD and RHD cars use the same parts save for one of the wiper arms.  If so, then the differences would be ...   02-01-2007 01:16 am

Ignition > Battery relocation. (9 replies - 8393 views)

You can do what you're asking about, but there are significant practical problems that need to be addressed.  Those that occur to me at the moment ...   02-01-2007 12:51 am

Engine & Transmission > Has anyone ever seen this? (10 replies - 6850 views)

What Ron said.  It could also be watery oil, or oily water, leaking into the plug cavity of the head, and boiling due to the ...   02-01-2007 12:03 am

Electrical & Instruments > Instrument Lights Don't Work (6 replies - 6119 views)

Your test should have caused all the instrument pod bulbs to illuminate.  Since only the oil gauge light did, then either all the other bulbs are ...   01-28-2007 12:08 am

Wheels > Lug Nut Torque (13 replies - 14356 views)

Totally ignoring all the good, sensible advice I've received over the years, I use anti-sieze compound on my car's lug nuts. The torque value I've chosen ...   01-26-2007 01:47 pm

Electrical & Instruments > Speedometer Calibration (2 replies - 5044 views)

Most speedometer errors are proportional to the car's actual speed.  A fixed error, such as a constant 20 mph regardless of speed, pretty much has to be a fault in the speedometer ...   01-25-2007 04:20 am

Electrical & Instruments > Instrument Lights Don't Work (6 replies - 6119 views)

One of the red-white wires runs from the dimmer to the clock lamp and thence to the heater controls lamp.  The second red-white wire runs ...   01-23-2007 04:43 am

Engine & Transmission > Seeking shims and answer on blocked oil drain (9 replies - 7349 views)

Judson Manning wrote: Leave the epoxy in place.  That was a 'fix' done to the early castings, later castings (mkIII aka JH5) are all solid.  ...   01-18-2007 03:09 am

Engine & Transmission > Pulled out my 907 (12 replies - 7320 views)

I agree with Kurt -- where else can you find an affordable sports car whose engine is just one step away from a Formula 2 powerplant?  That ...   01-12-2007 02:38 am

Body & interior stuff > Dash Instruments, Replacements, Resistance Figures (3 replies - 4601 views)

For the electrical information, see http://www.jensenhealey.com/forums/view_topic.php?id=14&forum_id=7 ...   01-10-2007 02:57 am

Engine & Transmission > Big oil leek. (1 reply - 2539 views)

I've listed some possible causes, and my opinion as to how likely each one is, below.  There may be others that escape me at the moment. Defective o-ring ...   01-10-2007 02:46 am

Engine & Transmission > Coolant to heater with Dellorto conversion (12 replies - 9400 views)

It's my understanding that Lotus engines with the coolant port in the head at the #4 cylinder use a different water pump with two additional ports.  I presume the second ...   01-10-2007 01:50 am

Suspension > Front Suspension Assistance (10 replies - 9080 views)

Here's an approach that should work. Jack up car and support with 4 jack stands.  Forward jack stands must be to rear of crossmember. Remove front wheels.  ...   01-09-2007 01:33 am

Suspension > Front Suspension Assistance (10 replies - 9080 views)

If the through-bolt is frozen into the distance piece (tubular spacer) that's a part of the crossmember assembly, try generous applications of a good penetrating oil ...   01-05-2007 12:33 am

Suspension > Coil-Over Shock/Spring Conversions (22 replies - 18836 views)

As I recall from my early years, a conventional hydraulic shock in good condition offers considerable resistance to motion -- so much so that it might take ...   01-03-2007 02:42 am

Engine & Transmission > Valve clearances and Camshafts (60 replies - 40813 views)

I will again note that the measurements I posted earlier weren't all that accurate -- any or all of the readings I took could easily have been 0.005" ...   01-02-2007 12:22 am

Engine & Transmission > Valve clearances and Camshafts (60 replies - 40813 views)

You can determine a cam's nominal lift by measuring the lobe height (the distance from the tip of the cam lobe to the belly of the base circle) and the ...   01-01-2007 05:00 pm

Engine & Transmission > Valve clearances and Camshafts (60 replies - 40813 views)

Your cams are marked with the correct casting numbers, but that says nothing about the way the cam lobes are ground.  Probably you have the stock JH ...   01-01-2007 01:21 am

Engine & Transmission > Exhaust rattle (2 replies - 3274 views)

You could easily have a loose bit (probably rather small in size) in the rear muffler.  My car once made a fair assortment of funny noises, few ...   12-29-2006 03:49 am

Cooling > Hoses (4 replies - 6537 views)

I'm talking about cracks appearing only in the outer surface of the hose, at the points where the hose flexes due to engine vibration and ...   12-23-2006 11:00 pm

Brakes > Brake light on after hose replacement (22 replies - 30165 views)

See the old archives, specifically: http://www.jensenhealey.com/msgboard.mv?parm_func=showmsg+parm_msgnum=1008604 The offer of a couple of free EP o-rings made in another post is still active.  (Edited to correct errors). ...   12-21-2006 01:58 am

Cooling > Hoses (4 replies - 6537 views)

I've always just bought them from Delta Motorsports.  Their upper and lower radiator hoses use the proper material (kevlar, IIRC).  The manifold hose is a name ...   12-19-2006 01:34 am

Cooling > Block Drains? (4 replies - 6182 views)

While the factory's parts list drawings for the early and late blocks show a drain valve on the engine's left side, neither my car's engine ...   12-18-2006 01:28 am

Engine & Transmission > Tming marks (8 replies - 6321 views)

Don't know as I've never seen a car using the HTD system.  However, I understand that there are several owners here that use it, and perhaps ...   11-22-2006 01:18 am

Engine & Transmission > Tming marks (8 replies - 6321 views)

I don't have an industry standard number for the cam seals, but Delta should have them in stock.  It's fairly easy to remove the old ones and install ...   11-21-2006 06:46 pm

Engine & Transmission > Tming marks (8 replies - 6321 views)

Cam timing is discussed in section A52 of the shop manual as well as other locations in the factory documentation.  What they tried to say is: 100 ...   11-21-2006 04:31 am

Carburetors > Stromberg float chamber plug o-ring? (3 replies - 6189 views)

Shamelessly tooting my own horn, you might also wish to take a look at an older thread: http://www.jensenhealey.com/forums/view_topic.php?id=13&forum_id=10&highlight=o-ring ...   11-20-2006 02:59 am

Engine & Transmission > Another stupid question (2 replies - 3331 views)

Here's a photo I just took. This applies to engines #2760 and up (earlier engines are similar but IIRC the pulley mark is on the front face).  ...   11-20-2006 02:42 am

Engine & Transmission > Stupid questions.......... (4 replies - 4673 views)

To add just a little to what Kurt and Jim have said, here's a drawing showing how all the carb tubes should be hooked up. ...   11-19-2006 01:39 am

Ignition > Electronic Distributor Experiences? (23 replies - 22682 views)

For whatever it's worth to this discussion, the data I've come across indicates that a stock JH engine has the following centrifugal advance curve, regardless of carburetors used: Crank  ...   11-16-2006 03:27 am

Brakes > Soft Brake Pedel (9 replies - 12511 views)

Jay, to answer your questions: As far as I know all JHs and GTs used the same master cylinder and fluid reservoir. The Roadster Factory designation T56 refers ...   11-14-2006 09:03 pm

VIN Database for Jensen Healey & Jensen GT > Jensen Healey & Jensen GT VIN Database (274 replies - 214888 views)

VIN 16371, good condition, engine B7404-6835.  Currently in Kingman AZ. Disassembled spare engine B7410-9384 (bought from Kurt Housh in 2000).   ...   11-14-2006 04:33 am

Brakes > Soft Brake Pedel (9 replies - 12511 views)

I concur with Greg and Ron.  From what I've heard and read, only about one in six to one in eight dual-circuit master cylinders can be ...   11-11-2006 06:11 pm

Electrical & Instruments > My turn signals don't work when it rains (9 replies - 13039 views)

Bill, I collect photos of JHs and their component parts, partly for my own interest, partly to make answering future questions easier.  Most JHs (certainly ...   11-11-2006 02:56 am


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