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Posts by Mark Rosenbaum
532 postsShowing posts 281-320 of 532

Miscellaneous > "Why did you buy a JH... When you could have bought a New sports Car?" (20 replies - 36336 views)

A few points come to mind: 1.  Since the end of World War II, not once has a major US auto manufacturer been able to come close ...   10-11-2005 05:02 pm

Suspension > KYB SHOCK #s (3 replies - 10588 views)

I have no information on the KYB shocks that fit the rear of the car. For the KYB front shocks I bought recently from Delta, the part number on ...   10-11-2005 03:04 pm

Suspension > Lower ball joint removal (9 replies - 23656 views)

As suggested by the attached photo, the ball joints do just press in, but they fit very tightly.  If you have a 2- or 3-jaw puller of ...   10-08-2005 10:32 pm

Electrical & Instruments > Side Marker Lights (7 replies - 16905 views)

In Grenada, do folks drive on the left or right side of the road? Judging from its photos at the JHP site, your car appears to be a European ...   10-06-2005 08:42 pm

Ignition > Ballast Resistor? (29 replies - 74913 views)

Congratulations on your success in dealing with a particularly difficult set of problems. I'm curious about your 'new and improved' crank pulley.  What is the 'gauge' you're using with it?  How ...   10-03-2005 04:23 pm

Miscellaneous > My anniversary (5 replies - 11675 views)

George, Thanks.  I try to remember what other folks have done to fix problems with their cars, and combine that with my own experiences, a decent background in ...   09-26-2005 06:28 pm

Engine & Transmission > Hesitation (6 replies - 13123 views)

Unlike most cars of the period, which used a vacuum advance mechanism, the vacuum capsule on the JH retards the timing under high vacuum conditions. Supposedly ...   09-25-2005 11:21 pm

Engine & Transmission > Hesitation (6 replies - 13123 views)

Dave, Unfortunately we're getting a bit beyond my area of expertise here, but as I understand things, a good-running engine should have relatively little O2 in the ...   09-24-2005 08:16 pm

Engine & Transmission > Hesitation (6 replies - 13123 views)

The torque peak of a stock 907 is at 4800 rpm.  While an engine in decent tune should pull smoothly from 2000 rpm up, it just won't have ...   09-24-2005 03:52 pm

Body & interior stuff > Seat Headrest, Tonneau Pins, Heater Function (1 reply - 6751 views)

Headrests. Moving the headrest takes some effort, or, if things are badly rusted, brute force.  The headrest is normally held in position by a roller thing in the ...   09-24-2005 12:28 am

Ignition > Ballast Resistor? (29 replies - 74913 views)

That's correct only if the plugs are not shorted.  A shorted plug will not allow the development of a voltage high enough to make a spark, trigger ...   09-23-2005 12:57 am

Ignition > Ballast Resistor? (29 replies - 74913 views)

It sounds like things are good right up to the spark plugs.  Certainly that's about all that's left.  ISTR that you mentioned checking the plugs, ...   09-23-2005 12:11 am

Engine & Transmission > starting (5 replies - 11475 views)

I'll assume you have normal fuel delivery and serviceable carburetors.  A 907 in good shape should start with just a few seconds of cranking using an open throttle ...   09-22-2005 06:31 am

Miscellaneous > Any Jensen Healey Owners in Sacramento CA? (4 replies - 10192 views)

I can recommend my friend the professional mechanic.  The shop where he's working at the moment, which IIRC is near Pittsburg CA, has had at least some experience with ...   09-21-2005 09:12 pm

Carburetors > Single Choke vs Double Choke (1 reply - 8533 views)

Mounted to the front Stromberg is the 'start enrichment valve' that's usually called a choke.  A tube in this carb's float bowl connects the fuel in the ...   09-21-2005 07:59 pm

Ignition > Ballast Resistor? (29 replies - 74913 views)

Joel, The Pertronix gadget is a magnetically activated solid-state switch.  From the user's point of view, it works exactly like a set of points, with none ...   09-20-2005 10:19 pm

Ignition > Ballast Resistor? (29 replies - 74913 views)

It's almost certainly something strange with the distributor.  Check the following: 1.  Exchange the plug wires between a good cylinder and a bad one.  If you now ...   09-20-2005 01:41 am

Engine & Transmission > Engine Damper Location (4 replies - 10339 views)

The damper attaches to the rear of the engine and to the firewall, as indicated in the attached photo.  The far side of the firewall ...   09-19-2005 05:07 am

Brakes > Brake Fade (8 replies - 19352 views)

The symptoms are characteristic of a non-sealing tipping valve inside the master cylinder.  Other possibilities in addition to the tipping valve problem include (a) air in the ...   09-18-2005 04:19 pm

Ignition > Ballast Resistor? (29 replies - 74913 views)

For testing, yes, anywhere that's hot when the ignition is on will work.  But for actual driving, you'll want the tach to work, so you'll ...   09-17-2005 01:01 am

Body & interior stuff > Dash Cap (2 replies - 9270 views)

The dash cap is a good product and I've had one on my car for over four years now, without any ill effects.  The cap is ...   09-16-2005 09:57 pm

Ignition > Ballast Resistor? (29 replies - 74913 views)

Good question, and one which a careful reading of the Pertronix website neglects to answer directly, shame on them.  However, they do mention in their online PDF catalog that there ...   09-16-2005 09:03 pm

Miscellaneous > Hole in Delta header? (6 replies - 13674 views)

Ken, Glad you enjoyed the humor.  I try to use it sparingly, as it sometimes doesn't go over all that well. The JH exhaust gaskets are individual, ...   09-16-2005 06:49 am

Ignition > Ballast Resistor? (29 replies - 74913 views)

Yes, the ballast (whether white ceramic brick or funny wire) reduces the voltage applied to the coil.  The original factory coil, whether Lucas or Delco, requires ...   09-16-2005 06:26 am

Miscellaneous > Hole in Delta header? (6 replies - 13674 views)

Shortly after installation, the Delta exhaust system on my car went through a brief 'burn-in' period and became slightly louder than it had been.  It hasn't changed ...   09-16-2005 12:45 am

Engine & Transmission > Oil Sump fill levels (2 replies - 7978 views)

Tony, Yes, the baffles were installed by Lotus when the engines were built.  It's my understanding -- which may not be correct -- that they were added ...   09-15-2005 02:08 pm

Engine & Transmission > Oil Sump fill levels (2 replies - 7978 views)

Having some time on my hands, I decided to see exactly how full a late-engine JH oil sump gets for various fluid quantities.  Not having ...   09-14-2005 10:45 pm

Miscellaneous > How light can the JH be? (16 replies - 28025 views)

I'm not a structural engineer but did study the field many decades ago.  I greatly doubt you could cut much weight from the frame, front crossmember, ...   09-11-2005 12:53 am

Suspension > Noisy Over Bumps (3 replies - 9981 views)

Finding Noises. I don't know of any special method to find chassis/suspension noises other than to (a) bounce the car with its wheels on the ground, or ...   09-08-2005 10:29 pm

Electrical & Instruments > panel light switch (10 replies - 20954 views)

There's a spring-loaded ball on the side of the shaft and a corresponding hole in the knob.  You have to insert a small punch (1/16" maybe) ...   09-07-2005 03:25 am

Brakes > Different viewpoints on brakes (16 replies - 32658 views)

Ran across the site below involving folks who put V8 engines into things such as Vauxhall Vivas.  Naturally they then need improved brakes, and some ...   09-04-2005 12:28 am

Ignition > Engine cuts off (1 reply - 7776 views)

This is almost always caused by a bad ignition switch or the wiring and connectors associated with it.  Normally, when the engine is cranking, an ...   09-03-2005 08:19 pm

Electrical & Instruments > POLL: Headlights (15 replies - 28022 views)

I drove my car at night recently, for almost the first time, and concluded that its headlights are charitably described as marginal.  I'm interested in what other owners ...   09-01-2005 06:34 pm

Electrical & Instruments > How many amps to fuse the Headlight circuit? (3 replies - 17222 views)

My car's license plate lights only short out to the trunk lid when I try to remove them with the power on.  I don't have a problem with ...   09-01-2005 05:41 pm

Electrical & Instruments > Fusable Link or Mega Fuse? (1 reply - 6918 views)

Ford used to use a really short fusible link for general system protection, but I'm under the impression they quit doing that in the late 1970s ...   09-01-2005 12:08 am

Engine & Transmission > VALVE REPLACEMENT (1 reply - 6926 views)

The 907 is a fairly complex engine and I'd be uncomfortable advising a novice to pull the head unless he/she's seen an engine disassembled in person or at least in a video.  The ...   08-31-2005 11:51 pm

Ignition > A distribution of distributor problems (17 replies - 30450 views)

Joel, The part where the clamp goes doesn't seal or hold pressure, it's just a mechanical stop, so you can try to re-use the distributor at ...   08-31-2005 04:09 am

Suspension > Front suspension (53 replies - 90374 views)

When I finally got around to doing something about my car's suspension, I first installed Superpro bushings in the lower rear arms, as mentioned elsewhere ...   08-30-2005 10:03 pm

Engine & Transmission > Gearbox Ratio's (6 replies - 16509 views)

I agree with Judson, the stock 4-speed has excellent ratios.  The ideal in most applications is to have the ratio between adjacent gears equal to ...   08-26-2005 03:16 pm

Electrical & Instruments > Tachometer affected by brakes/blinkers (4 replies - 11036 views)

Re the voltage stabilizer.  Sorry for the confusion, I didn't explain that at all well.  My thought was that the stabilizer used for the temp and ...   08-26-2005 02:59 pm


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