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 01:11 pm

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 04:39 pm

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 02:34 pm

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 03:47 pm

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 12:56 pm

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 02:16 am

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 12:16 am

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 ...   01-31-2007 11:51 pm

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 ...   01-31-2007 11:03 pm

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 ...   01-27-2007 11:08 pm

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 12:47 pm

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 03:20 am

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 03:43 am

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 02:09 am

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 01:38 am

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

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 01:46 am

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 12:50 am

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 12:33 am

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 ...   01-04-2007 11:33 pm

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 01:42 am

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" ...   01-01-2007 11:22 pm

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 04:00 pm

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 12:21 am

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 02:49 am

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 10:00 pm

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 12:58 am

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 12:34 am

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 12:28 am

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 12:18 am

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 05:46 pm

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 03:31 am

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 01:59 am

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 01:42 am

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 12:39 am

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 02:27 am

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 08:03 pm

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 03:33 am

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 05:11 pm

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 01:56 am