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320 postsShowing posts 161-200 of 320

Cooling > rebuilding the water pump (11 replies - 6224 views)

Brett Gibson JH5 20497 wrote: (Snip)... A new impeller cost about $40 but most of the time you can re-use your old one, or better yet ...   08-01-2016 01:43 am

Engine & Transmission > Oil Pressure too high (23 replies - 8009 views)

907 Oil Pressure Specs Jensen-Healey at normal operating temp (hot) 60 psi (4.2 kg/ sq cm) at 2500 rpm J-H's 60 psi oil pressure spec is possible, but ...   08-01-2016 01:23 am

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 48182 views)

I'm late to this thread, sorry if I'm beating a dead horse. Westsideclay, Subwoofer and Brett have given you good advice on how to time ...   05-10-2016 07:59 am

Engine & Transmission > Belt idler pulley and bearings. (56 replies - 15572 views)

Frank, Jensen-Healy 'assembled' eccentric tensioner Industry Standard ball bearings, such as ... INA 6005-2RS ID .............. 0.9843" (25mm) OD ............. 1.8504" (47 mm) Thickness: ... 0.4724" (12 mm) Two ...   05-05-2016 03:29 pm

Miscellaneous > Spring Kick-Off Car Show (0 replies - 1179 views)

Every Spring in the Twin Cities, Minnesota, there's a mixed-Marque, vintage-foreign car show called the Spring Kick-Off Car Show. It's 'all foreign', but ...   05-04-2016 04:14 pm

Electrical & Instruments > Lucas Windshield Wiper ID (1 reply - 1785 views)

The windshield wiper gearmotor has some ID marks stamped on the gearbox cover (not on the motor). It should be something like: 75720A PARK ...   03-29-2016 09:13 pm

Projects > Got it started (76 replies - 31394 views)

I know, I'm very late, but I just ran across this thread. Maybe this will be of use to the next guy.Bfitz241 wrote: The ...   02-21-2016 12:49 am

Wheels > Stock wheel offset (19 replies - 14437 views)

I've harvested the following from somewhere on the Internet, and cannot verify it's accuracy. Use at your own risk. Jensen Healey Wheels. 13 x 5.5 ...   02-21-2016 12:03 am

Electrical & Instruments > Starter Solenoid (4 replies - 3032 views)

NigelK wrote: OK so the red / white ignition wire should be attached to the diagonally mounted spade terminal NOT to the smaller spade terminal marked ...   02-07-2016 06:44 am

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

Steve, Nice looking diff, but... have you ever autocrossed a lightweight car with a limited slip differential? 1) Limited slip under power will tend to ...   02-07-2016 06:10 am

Carburetors > Dellorto DHLA 45 (7 replies - 6309 views)

Matthew Cooper (Matt) at Eurocarb Ltd is a great tech resource for Dellortos (and Webers). He knows it all, and is willing to ...   12-01-2015 06:12 pm

Carburetors > Dellorto DHLA 45 (7 replies - 6309 views)

Koit, If you were talking about a Lotus 907/ 912 engine, there's enough Dellorto history with those engines, both Jensen-Healey and Lotus versions, that we could ...   12-01-2015 04:52 pm

Carburetors > Dellorto DHLA 45 (7 replies - 6309 views)

Carbs require a little black art to tune them. They are not ECU controlled with sensors and feedback loops, so it's not a ...   11-28-2015 04:33 am

Carburetors > Dellorto DHLA 45 (7 replies - 6309 views)

In the engine's stock configuration, at what rpm did peak power occur? Regards, Tim Engel ...   11-28-2015 12:29 am

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

Exhaust Manifold Gasket (between exhaust manifold flange & cylinder head) Original thru 1985 Steel-Asbestos-Steel Sandwich: A907E0004Z = JH 97263 - Martin Robey JH Parts Manual A907E0004ZC - 907 thru ...   11-27-2015 11:52 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

While I'm on a roll, here's one more thing... The original steel-asbestos-steel exhaust gasket blows too easily (the ones between the exhaust manifold flange and the ...   11-27-2015 09:00 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

Steve, The current head gasket is the Goetze composite gasket (or JAE sells their own aftermarket clone). It requires the use of either Lotus' ...   11-27-2015 08:41 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

Steve, The number cast into a Lotus part is the raw casting number, not the finished part as used on the engine, or that you could ...   11-27-2015 07:25 pm

Engine & Transmission > Fastner Sizes - Nuts & Bolts (4 replies - 2459 views)

Jim, Is the latest file available somewhere? Regards, Tim Engel ...   11-19-2015 05:43 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

stevegarnjobst wrote: Not sure that conversion is allowable under the SCCA rules. If it were, is the update worthwhile?Yes. The round-tooth HTD timing ...   11-18-2015 04:59 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

stevegarnjobst wrote: Were all the stock tappets cast iron?ALL 907s were originally built with chilled cast iron tappets. When Lotus made the change to ...   11-18-2015 04:47 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

Steve, I just edited Post #19 to add a cylinder head torque spec. If it wasn't there when you read it, go read it ...   11-18-2015 03:33 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

The current composite cylinder head gasket's crushed thickness is 0.020" thicker than the old steel-asbestos-steel gasket's. That lifts the head 0.020" higher off ...   11-18-2015 03:19 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 17501 views)

Steve, The very early 907 Mk I intake ports were 24.5 mm tall. Later, they were increased to 25.5 mm as a running change. ...   11-18-2015 03:10 pm

Engine & Transmission > removing cylinder head (10 replies - 6064 views)

Jay wrote: Would anyone have a suggestion on where I could find a workshop manual for the 1974 Lotus 907 engine? I would love to read ...   11-17-2015 10:04 pm

Carburetors > Pierce intake manifold for Weber/Dellorto? (3 replies - 3229 views)

That could be cool. I've talked with Mike, but have never met him in person. He's a good guy, and seriously into ...   11-17-2015 09:45 pm

Engine & Transmission > Internal Oil Breather Pipe (3 replies - 2316 views)

Carl, Vent Pipe: It's used in the 2.0 907 in the Elite, Eclat & Esprit. It is not in the 2.2 912 or 910 Lotus hasn't made new ...   11-17-2015 04:59 am

Engine & Transmission > Crankshaft (12 replies - 11020 views)

Don, I've got 4 new ones, measured them with a micrometer, and got an average of 0.0925" (2.35mm) Lotus = Standard, +0.0025, +0.0050, +0.0075, +0.0100 JAE stocks ...   11-17-2015 03:44 am

Carburetors > Pierce intake manifold for Weber/Dellorto? (3 replies - 3229 views)

Steve, The manifolds (5 available) being offered by Pierce are original NOS parts, not reproductions. The only thing is that, from the photos posted, ...   11-17-2015 03:28 am

Engine & Transmission > Fastner Sizes - Nuts & Bolts (4 replies - 2459 views)

Go to my Dropbox account here: https://www.dropbox.com/sh/4kxqw9vlsnz54lf/AACCyvB-TfYKLI1qM-e_IUlTa?dl=0 In a sub-folder titled "Jensen-Healey Parts & Tech", you'll find an Excel file: Hardware - JH Nuts & Bolts by Jim ...   11-02-2015 01:20 am

Engine & Transmission > Differences between MkII engine and GT engine? (16 replies - 7205 views)

t4brew wrote: If the GT 907 engine you are looking at still has the air rail you may need to find plugs for the air injection ...   09-17-2015 05:45 am

Engine & Transmission > Timing Belt Noise (6 replies - 3255 views)

Are the pulleys worn such that the belt is running against a stepped edge? Worn pulleys should be replaced. Regards, Tim Engel ...   09-02-2015 08:21 pm

Engine & Transmission > Timing Belt Noise (6 replies - 3255 views)

Bogie07 wrote: After sitting for a couple months, I started my car up and drove it for a while. It ran fine, but once it was ...   09-02-2015 08:18 pm

Carburetors > DHLA 45s possibly boiling? (21 replies - 12234 views)

The first step to a good carb tune-up is to give the ignition a good tune-up, so don't give up on that. ...   06-21-2015 05:19 am

Carburetors > DHLA 45s possibly boiling? (21 replies - 12234 views)

These Jenvey twin, long throttle bodies mimic the DHLA / DCOE size and footprint. http://www.jenvey.co.uk/images/stories/virtuemart/product/tb45_d.pdf Quoting: "The TB body is designed with major dimensions identical to twin horizontal ...   06-21-2015 04:59 am

Carburetors > DHLA 45s possibly boiling? (21 replies - 12234 views)

subwoofer wrote: 3. Stale fuel. Fuel is from last year, but it did the same thing last year when the fuel was fresh. Also, expected outcome ...   06-17-2015 08:01 pm

Carburetors > DHLA 45s possibly boiling? (21 replies - 12234 views)

gmgiltd wrote: I understand he is working on a system to go inside DHLA's so it might be worth a call.I've also seen fuel injection systems ...   06-17-2015 07:27 pm

Carburetors > DHLA 45s possibly boiling? (21 replies - 12234 views)

Joachim, Are your Dellortos stock Jensen-Healey spec? And are they emissions or non-emissions? What is the elevation above sea level where you ...   06-17-2015 07:25 pm

Engine & Transmission > renovated engine burning oil (46 replies - 20662 views)

I lied, I do have a liner handy and it's OD at the step/ seat is: 4.294" (109 mm). So a liner shim would need to be ...   04-27-2015 09:33 pm

Engine & Transmission > renovated engine burning oil (46 replies - 20662 views)

I don't recall any liner shims, but then there were a few J-H parts that never made it to the Lotus world. But ...   04-27-2015 08:32 pm


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