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295 postsShowing posts 121-160 of 295

Engine & Transmission > Cam belt replacement (43 replies - 9306 views)

qwerty wrote: You can also replace the standard belt with a gates racing belt for apparently 3x the life. Gates Part # T104RBThe Gates Racing blue timing ...   10-15-2016 07:12 am

Engine & Transmission > Cam belt replacement (43 replies - 9306 views)

Joenpate56 wrote: I am replacing the old belt as it is several years (10+) old.The black, trapezoidal tooth timing belt is supposed to be replaced every ...   10-14-2016 03:29 am

Engine & Transmission > Cam belt replacement (43 replies - 9306 views)

Brett Gibson JH5 20497 wrote: (Snip)... cut the belt on the engine in half, length wise, then slide the new belt onto the pulleys (Snip)...dwalls1 wrote: (Snip)... ...   10-14-2016 02:30 am

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

qwerty wrote: Just checked the back of the cam gears and there's a black mark.... ....JUUUUUUST KIDDDING!! Keep that up and we'll make you go sit in ...   10-12-2016 09:00 am

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

Tim Murphy wrote: Hopefully, I will then keep quiet and let the other, more knowledgeable guys offer help :<)Discussion is good, don't go silent on us. Regards, Tim ...   10-12-2016 08:55 am

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

Tim Murphy wrote: (Snip)... With the engine running at 1k (25D Distributor), check the ignition timing at the crank pully, it is usually set around 8 ...   10-11-2016 05:53 am

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

qwerty wrote: I will be taking the cam covers off later this week or on the weekend. I will look for markings.The cam's ID marks are ...   10-10-2016 08:46 pm

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

qwerty wrote: Thinking out loud here, Could this be the end result of the Aux pulley being out by 1 or more teeth and correcting for ...   10-10-2016 08:38 pm

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

qwerty wrote: (Snip)... Maybe it does have non standard cams, as yet i do not know. Maybe it's to let the DHLA 45's breathe.Remove a cam ...   10-10-2016 08:24 pm

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

subwoofer wrote: You have both cams installed with Red Dot (110MOP) as the valid timing mark, but if I am not much mistaken they have been ...   10-10-2016 08:07 pm

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

qwerty wrote: Tim wrote: > If the cams are stock, and the pulleys are 110/100 (97), > then the best cam timing to use is 110 IN ...   10-10-2016 07:56 pm

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

qwerty wrote: (Snip)... I doubt is has a different Cam but i will check ...how do i check? On the stock, OEM cams, there were marks on ...   10-10-2016 07:52 pm

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

JHPS allows file attachments up to 102kb, and your drawing is only 17kb. Do you have a higher resolution version that you could ...   10-10-2016 07:30 am

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 views)

The second file, the camshaft drawing, is pretty illegible. I've reversed the color bias so that it has a white background, but the ...   10-10-2016 06:57 am

Cooling > rebuilding the water pump (11 replies - 4529 views)

Brett Gibson JH5 20497 wrote: You can buy the bearing for $13.10 and the seal for $10.80 from JAE and do it yourself, they even have ...   08-01-2016 03:43 am

Cooling > rebuilding the water pump (11 replies - 4529 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 02:43 am

Engine & Transmission > Oil Pressure too high (23 replies - 4923 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 02:23 am

Engine & Transmission > cams, valve timing and ignition timing (106 replies - 37361 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 08:59 am

Engine & Transmission > Belt idler pulley and bearings. (56 replies - 9947 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 04:29 pm

Miscellaneous > Spring Kick-Off Car Show (0 replies - 810 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 05:14 pm

Electrical & Instruments > Lucas Windshield Wiper ID (1 reply - 1307 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 10:13 pm

Projects > Got it started (76 replies - 22957 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 01:49 am

Wheels > Stock wheel offset (19 replies - 12352 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 01:03 am

Electrical & Instruments > Starter Solenoid (4 replies - 2228 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 07:44 am

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 07:10 am

Carburetors > Dellorto DHLA 45 (7 replies - 4494 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 07:12 pm

Carburetors > Dellorto DHLA 45 (7 replies - 4494 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 05:52 pm

Carburetors > Dellorto DHLA 45 (7 replies - 4494 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 05:33 am

Carburetors > Dellorto DHLA 45 (7 replies - 4494 views)

In the engine's stock configuration, at what rpm did peak power occur? Regards, Tim Engel ...   11-28-2015 01:29 am

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 ...   11-28-2015 12:52 am

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 10:00 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 09:41 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 08:25 pm

Engine & Transmission > Fastner Sizes - Nuts & Bolts (4 replies - 1951 views)

Jim, Is the latest file available somewhere? Regards, Tim Engel ...   11-19-2015 06:43 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 05:59 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 05:47 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 04:33 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 04:19 pm

Projects > 19064 - autocross project car for SCCA's FSP class (42 replies - 12557 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 04:10 pm

Engine & Transmission > removing cylinder head (10 replies - 5142 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 11:04 pm


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