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307 postsShowing posts 1-40 of 307

Engine & Transmission > Damaged Cam (5 replies - 372 views)

Rubber seals and O-rings don't age well in static storage. If it has been 23 years since your car was last used, then ...   02-05-2018 10:25 pm

Engine & Transmission > Transmission Leaks 4 Speed 13556 (14 replies - 388 views)

Off topic, but one more illustration while I'm on a roll. This one shows a modification to the rear journal in the Main ...   02-01-2018 08:52 am

Engine & Transmission > Transmission Leaks 4 Speed 13556 (14 replies - 388 views)

This JPEG is another view of the spray shield. It also shows the rear cover and lip seal with the centering tool installed. ...   02-01-2018 08:39 am

Engine & Transmission > Transmission Leaks 4 Speed 13556 (14 replies - 388 views)

answerman wrote: "When you install the seal make sure you hold it back aprox. 0.100" or it will leak like a sieve."The attached JPEG illustrates how ...   02-01-2018 08:28 am

Engine & Transmission > Transmission Leaks 4 Speed 13556 (14 replies - 388 views)

Tim Murphy wrote: Redracer,(or anyone else)do you have a picture or diagram of what you are describing. Or maybe you can explain it more for those ...   02-01-2018 08:24 am

Engine & Transmission > Transmission Leaks 4 Speed 13556 (14 replies - 388 views)

The JH Workshop manual doesn't mention using any sealant or threadlocker on the flywheel bolts. And Jim is correct, oil can wick past ...   01-30-2018 06:02 pm

Engine & Transmission > Damaged Cam (5 replies - 372 views)

Simon, There's no standard for how badly damaged a journal can be, and still be useable. IMHO, this one shouldn't be used as is. ...   01-24-2018 05:54 pm

Projects > 16173 will be entering project status... (161 replies - 87675 views)

Jeff at Advanced Distributors can rebuild it for you. Also talk to him about modifying the Pertronix distributor to accept a seal. Jeff is ...   01-12-2018 05:42 am

Ignition > 1974 Jensen Healey Crank but No Start (13 replies - 545 views)

Dave427 wrote: The carbs have not been touched. I will have a look at them the next time I am over at the car. I will ...   01-04-2018 07:05 am

Ignition > 1974 Jensen Healey Crank but No Start (13 replies - 545 views)

Dave, How large is the photo file? The forum won't allow attachments larger than 102400 bytes (102.4 kb). Don't use the 'Quick Reply' option at ...   01-02-2018 01:39 am

Ignition > 1974 Jensen Healey Crank but No Start (13 replies - 545 views)

Dave, I have no idea what to say about the old alarm system, or any loose wires that may have resulted from removing it. ...   01-02-2018 01:28 am

Carburetors > Zenith Stromberg Carburetor Vacuum Lines Schematic (11 replies - 8846 views)

chrisl wrote: I've acquired a set of Strombergs and am refurbishing them to fit on my GT. It currently has Dellortos on it and runs fine ...   12-16-2017 07:21 pm

Engine & Transmission > Compression Readings for 2.2L Stroker Lotus 907 Engine (2 replies - 369 views)

Cylinder pressures vary with compression ratio, not stroke length/ displacement. It's normal practice to check cylinder pressures on a hot engine, with the plugs removed, the ...   12-13-2017 10:48 pm

Engine & Transmission > Reversed cams effects (12 replies - 1745 views)

It's good to hear the compression has improved. Spec Compression Pressure for 8.4:1 cr are: 110-130 psi COLD = Jensen-Healey spec. 150-170 psi HOT. = Lotus specifies checking ...   12-12-2017 07:23 am

Engine & Transmission > Engine rope rear main seal in early Mk1 (7 replies - 421 views)

Just a general statement about rope seals... I don't know how specifically this applies to the Mk I 907's seal. In the 1980s, asbestos and some ...   12-10-2017 10:11 pm

Engine & Transmission > Engine rope rear main seal in early Mk1 (7 replies - 421 views)

The rope seal is flawed by type. It's old school, and less than perfect. If you install it perfectly, it may ...   12-10-2017 07:26 am

Engine & Transmission > Auto gearbox on a J-H or GT (3 replies - 311 views)

I've never seen a JH converted to automatic, but Lotus did offer a 907/ Borg-Warner 3-spd auto combination in the Series 1 Elite & ...   12-03-2017 06:45 pm

Engine & Transmission > Trans fluid (3 replies - 316 views)

Frank, I don't know what JH's spec is for the 5-speed, so I'm not disagreeing with you as much as asking for clarification. Not all gear ...   12-03-2017 06:24 pm

Engine & Transmission > Reversed cams effects (12 replies - 1745 views)

tonyhawker wrote: If all seems well I will put the new Gates 104 belt on and proceed with other checks.  Don't want to damage a $116 ...   10-17-2017 08:22 pm

Engine & Transmission > Reversed cams effects (12 replies - 1745 views)

Tony, Before you go making changes, how about posting clear, close-up photos of the present pulleys. Clean them so that any markings stamped on ...   10-15-2017 01:51 am

Engine & Transmission > oil pan (11 replies - 5885 views)

I don't 'know' this is what your drain plug is, but... There are aftermarket drain plugs that look much like an old-school Thermos bottle stopper. ...   09-30-2017 03:52 am

Engine & Transmission > Differential Oil-GL-1, GL-4 or GL-5? (10 replies - 875 views)

Steve Duncan wrote: Thanks for the information. Just so I'm clear,there are no "yellow metals" in the differential? All the shims are steel?The Jensen-Healey rear axles ...   09-28-2017 10:37 pm

Engine & Transmission > Differential Oil-GL-1, GL-4 or GL-5? (10 replies - 875 views)

Use a GL-5. It's specifically formulated for use with hypoid gears, such as those used in the final drive's crown wheel & pinion. ...   09-27-2017 10:12 pm

Brakes > JH BRAKE DRUMS (5 replies - 2151 views)

t4brew wrote: My guess is that they are only needed to keep the drum from moving around until the wheel and lug nuts are torqued on. ...   09-27-2017 09:30 pm

Miscellaneous > Where can I find original Passenger side courtesy light? (3 replies - 456 views)

NigelK wrote: They come up on eBay in Australia rarely and for extortionate prices.Yipes... AU$475 on eBay Oz!! That is a little on the ...   09-24-2017 08:54 pm

Engine & Transmission > Reversed cams effects (12 replies - 1745 views)

A full 4-stroke cycle involves two full revolutions of the crankshaft. If the crank is at TDC, and the cam pulley timing marks ...   09-14-2017 05:52 am

Engine & Transmission > Reversed cams effects (12 replies - 1745 views)

tonyhawker wrote: Offhand, are the valves specific to only the 907 engine and made of unobtanium or are there more generic replacements available?  I have the ...   09-13-2017 01:27 am

Engine & Transmission > Reversed cams effects (12 replies - 1745 views)

If you have read my previous post already, read it again. What made sense in the wee hours of the morning read a ...   09-11-2017 08:21 am

Engine & Transmission > Reversed cams effects (12 replies - 1745 views)

As Don mentioned, the stock cams are identical. Even the cam carriers can be interchanged between the intake and exhaust sides of the ...   09-11-2017 07:28 am

Brakes > Pressure Differential Warning Actuator (8 replies - 1199 views)

Dick Fickey wrote: Thanks for the help Tim. Will follow your instructions when I bleed the brakes. Just got the rebuilt PDWA but I have ...   08-30-2017 04:12 am

Brakes > Pressure Differential Warning Actuator (8 replies - 1199 views)

Dick, When you open one hydraulic circuit to bleed it, the PDWA's internal shuttle/ piston will move off to one side, closing the switch contacts in ...   08-30-2017 03:44 am

Cooling > Water Temperature Gauge Calibration (19 replies - 2287 views)

The JPEG compares the later Lotus 907 impeller with backward curved vanes (on the right), with the 910 impeller with the full-length, backward curved vanes. ...   08-23-2017 12:42 am

Cooling > Water Temperature Gauge Calibration (19 replies - 2287 views)

DonBurns wrote: Thanks. Are 910 water pumps something that are available without a rebuildable 910 core?Sorry about being so slow getting back to you. It really helps ...   08-22-2017 03:35 pm

Cooling > Water Temperature Gauge Calibration (19 replies - 2287 views)

The engine needs to come up to normal operating temperture to run right, and to prevent moisture condensation build-up inside the engine. There ...   08-17-2017 08:08 pm

Engine & Transmission > Lotus 5 speed transmission (35 replies - 11475 views)

Interesting. How much does the W58's shifter need to be modified to fit properly in the JH? Is the excessive mfg ...   07-24-2017 09:19 pm

Engine & Transmission > Jensen Healey Specific - Eccentric Tensioner Hub (46 replies - 9852 views)

Rick, One of the blue belt's advantages is it's exceptional stability. Continue to check it's tension on a regular maintenance schedule, but once it's ...   07-24-2017 09:03 pm

Engine & Transmission > Jensen Healey Specific - Eccentric Tensioner Hub (46 replies - 9852 views)

Rick, What tension were you trying to achieve with your blue belt? Regards, Tim Engel ...   07-24-2017 06:37 am

Engine & Transmission > 907 Main Bearing Shells - Conversion to Run Chrysler 318 V8 Shells (7 replies - 1175 views)

Joachim, I've not talked with either of them myself. However, this subject started over on the LotusExcel forum, and the fellow needing the bearing ...   07-22-2017 03:49 am

Engine & Transmission > Auxiliary housing shaft circlip (4 replies - 755 views)

Apply the Loctite to the pulley bore. Maybe just a very little bit on the shaft, wiping most of it back off... ...   07-21-2017 09:28 pm

Engine & Transmission > Auxiliary housing shaft circlip (4 replies - 755 views)

Jim, The Auxiliary pulley is to be mounted with Loctite, and it should require the heat of a propane or MAPP gas torch to remove it. ...   07-21-2017 06:50 pm


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