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572 postsShowing posts 81-120 of 572

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

discogodfather wrote: I think I just answered my own question- cam timing is always TDC on the compression stroke. I think I measured it up ...   05-16-2020 04:50 pm

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

discogodfather wrote: It's hilarious that Dave Bean sent me a big write up on how to degree in cams that completely emphasizes the importance of degreeing ...   05-16-2020 05:32 am

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

discogodfather wrote: So, ready to bolt on the heads, just waiting for a couple extra shims to get me to .007" and .012" on intake and ...   05-16-2020 05:26 am

Body & interior stuff > GT Chrome Hood Knob (11 replies - 9695 views)

Just a guess, but perhaps it's there to create a little turbulence in the slipstream to help disperse the spray from the windscreen washer jet. Regards, Tim ...   05-07-2020 12:08 am

Miscellaneous > Jensen Healey Key (34 replies - 29601 views)

The car is now in my Lotus-friend, Dave's building in St Paul. Ray has not had success finding a shop near him in ...   05-06-2020 04:44 pm

VIN Database for Jensen Healey & Jensen GT > Spark Plugs for Lotus 907 - 2.2L Hi Compression Engine (7 replies - 9298 views)

I perfer magnetic or optical triggers since the engine doesn't have to be cranking at a minimum rpm for them to work. Heck, ...   05-05-2020 01:28 am

Engine & Transmission > ARP Head Stud Installation Procedure (Lotus 907 Jensen Healey) (14 replies - 13676 views)

And another... ...   05-05-2020 01:09 am

Engine & Transmission > ARP Head Stud Installation Procedure (Lotus 907 Jensen Healey) (14 replies - 13676 views)

There is some risk of thread damage if you double nut it. Given the price of ARP studs, treat them well. ...   05-05-2020 01:07 am

VIN Database for Jensen Healey & Jensen GT > Spark Plugs for Lotus 907 - 2.2L Hi Compression Engine (7 replies - 9298 views)

I mentioned the Crane XR700 & XR3000 ignition systems. Rather than leave that dangling, I'll finish the thought. It was originally ...   05-04-2020 12:09 am

VIN Database for Jensen Healey & Jensen GT > Spark Plugs for Lotus 907 - 2.2L Hi Compression Engine (7 replies - 9298 views)

Tom Bradley wrote: One potential problem, though, is that the distributor cap was not made for these kind of voltages and can go bad quicker. ...   05-03-2020 11:46 pm

VIN Database for Jensen Healey & Jensen GT > Spark Plugs for Lotus 907 - 2.2L Hi Compression Engine (7 replies - 9298 views)

See the attached JPEG for the spark plug, gap & plug wires Lotus spec'd for their version of the 2.2 equipped with an electronic ignition ...   05-03-2020 11:13 pm

Engine & Transmission > ARP Head Stud Installation Procedure (Lotus 907 Jensen Healey) (14 replies - 13676 views)

The brown goo is Permatex Aviation Form-a-Gasket. It's readily available at auto parts and hardware stores. It has a sister product ...   05-02-2020 06:00 am

Engine & Transmission > ARP Head Stud Installation Procedure (Lotus 907 Jensen Healey) (14 replies - 13676 views)

Disco, The head stud into the cylinder block is 27-30 Lbs-ft with oiled threads, same as for a standard stud. Once the stud is ...   04-28-2020 04:01 am

Engine & Transmission > ARP Head Stud Installation Procedure (Lotus 907 Jensen Healey) (14 replies - 13676 views)

Disco. I posted that? The tightening sequence is correct, center-out in a criss-cross pattern, regardless of the type of gasket used. But the torque spec is for the ...   04-27-2020 11:18 pm

Electrical & Instruments > WOSP Starter Motor Install, 3x the torque and 1/3 the size and weight (15 replies - 16613 views)

Not to take anything away from WOSP, but Gustafson Specialty Products make a similar product by modifying Nippondenso geared starters to fit a variety of ...   04-21-2020 09:33 pm

Projects > 1973 Jensen Healey #10777 Lotus "Colin Chapman" Edition "Gold Leaf" Build (45 replies - 41006 views)

Off Topic, but... I've owned a number of Lotus 9XX powered cars, and worked on a lot of the engines... I feel I know them. ...   04-21-2020 06:50 pm

Projects > 1973 Jensen Healey #10777 Lotus "Colin Chapman" Edition "Gold Leaf" Build (45 replies - 41006 views)

discogodfather wrote: Valve guides seem fine but I do have to measure a bit more. It's .018" clearance right, both intake and exhaust?You're missing a ...   04-21-2020 06:13 pm

Electrical & Instruments > WOSP Starter Motor Install, 3x the torque and 1/3 the size and weight (15 replies - 16613 views)

Most ignition systems include a ballast resistor prior to the coil. If 12 volts is 'nominal', the resistor will drop the voltage delivered ...   04-21-2020 05:10 pm

Engine & Transmission > Lubrication system diagram (25 replies - 22696 views)

I've had two 907s develop a problem with "ignition scatter". Put a strobe timing light on it, and the ignition timing could be ...   04-20-2020 05:27 pm

Engine & Transmission > Lubrication system diagram (25 replies - 22696 views)

SimonD wrote: Just got her out of her winter slumber and have noticed that the oil pump pulley has moved back against the oil pump housing.Carefully ...   04-20-2020 05:03 pm

Engine & Transmission > Lubrication system diagram (25 replies - 22696 views)

The auxiliary pulley should be installed with Loctite to secure it. The little wire circlip that serves as an abutment for the pulley is not very ...   04-20-2020 04:41 pm

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

And a similar one for the 'Lotus' 107 cam lobe. ...   04-19-2020 07:07 am

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

Here's a basic sketch of the 'Lotus' 104 cam lobe. ...   04-19-2020 07:06 am

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

"LOTUS" Cam ID . . . C. . . . . . . D . . . . . . . E. . . . ...   04-18-2020 02:03 am

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

discogodfather wrote: Ken at Dave Bean didn't seem to have this information, all he could give me was .420 lift/ 290 duration / 104 Lobe Centers. I ...   04-18-2020 12:28 am

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

discogodfather wrote: Intake seems to be marked DB3-104? Could that be Dave Bean?Disco, Have you called Dave Bean Engineering to ask if DB3-104 is theirs? ...   04-17-2020 05:15 pm

Engine & Transmission > Lubrication system diagram (25 replies - 22696 views)

Yes, drill through. A shallow, blind hole that goes nowhere would do nothing. If the oil pump and the rest of the system is ...   04-14-2020 04:18 pm

Engine & Transmission > Lotus 5 speed transmission (47 replies - 79889 views)

The ring dowels are available. Getting new ones shouldn't be a problem. They're a light, tap-in press fit, and aren't usually ...   04-13-2020 06:02 am

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

discogodfather wrote: Intake seems to be marked DB3-104? Could that be Dave Bean?I've never seen the DB3-104 designation before... which means nothing. The ...   04-13-2020 05:57 am

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

Sorry about the redundancy. It seems I posted something similar back in February. Tim ...   04-11-2020 08:07 pm

Ignition > Distributor timing and cam belt on a custom high power engine (55 replies - 48863 views)

Disco, I'm not so sure about the cam being a Lotus 104. A 'Lotus' 104 cam had 44444444... stamped all around the exposed bit ...   04-11-2020 07:50 pm

Projects > 10517 2.2 upgrade (3 replies - 4595 views)

Matthew, Add ten-pinning to your list of machining jobs. The narrow 907 block & main bearing panel were stiff enough for the short-stroke crank ...   04-10-2020 06:21 pm

Carburetors > Carburetor mounting (10 replies - 10303 views)

Or this cross-sectional drawing. It's for the Lotus Europa Twin Cam, not a J-H, so ignore the secondary throttle in the adaptor manifold ...   03-29-2020 03:43 pm

Carburetors > Carburetor mounting (10 replies - 10303 views)

For Strombergs, this is the soft-mount gap that needs to be carefully set to 0.070" (1.78 mm). Regards, Tim Engel ...   03-29-2020 03:26 pm

Carburetors > Carburetor mounting (10 replies - 10303 views)

discogodfather wrote: Just had to do this r&r'ing my webers. The metal spring style washer does not include any washers on either side.When you buy ...   03-27-2020 07:08 pm

Carburetors > Carburetor mounting (10 replies - 10303 views)

Okay... another long one, so pardon the abuse of banndwidth. Using or not using washers with Thackeray Washers (springs) is not the make-it or break-it deal ...   03-27-2020 07:01 pm

Engine & Transmission > cam carriers SB 74-23 modification (19 replies - 15840 views)

The spec valve clearances are stated as a range, typcially two thousandths wide. Lotus specs the clearances as: 0.005"-0.007" Intake 0.010"-0.012" Exhaust The clearances always close-up ...   03-17-2020 08:18 pm

Engine & Transmission > cam carriers SB 74-23 modification (19 replies - 15840 views)

Good job. I'm glad you got it all back together. Now, looking back on it all from a different point of ...   03-16-2020 06:20 am

Suspension > Front Subframe outrigger disassembly (13 replies - 12622 views)

MAX_dvdt wrote: > The rods are the shorter 136mm style The aftermarket 136mm long rods are required in order to make the longer-stroke, 2.4 Litre, aftermarket crank ...   03-05-2020 08:58 am

Engine & Transmission > cam carriers SB 74-23 modification (19 replies - 15840 views)

Chuck, I'm not following your descriptions, so please post pictures so I can see what it is that you have. I'm not sure how to make it ...   02-25-2020 09:07 pm


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