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Posts by Jim Ketcham
192 postsShowing posts 41-80 of 192

Engine & Transmission > Worn Cam Shaft Timing wheels ? (22 replies - 12268 views)

The cam sprockets do not come this way. These are worn. ...   04-27-2014 12:31 am

Engine & Transmission > Cylinder Head to Camshaft Housing oil port (9 replies - 3852 views)

Claus, I found some o-rings marked for the cam housing from one of my 907 gasket kits.  Trying to match it up it by eye the ...   03-07-2014 02:32 pm

Engine & Transmission > Cylinder Head to Camshaft Housing oil port (9 replies - 3852 views)

CORRECTION.  The part number for the O-ring should be: A907E6202Z. Sorry about that. Jim ...   03-07-2014 01:51 pm

Engine & Transmission > Cylinder Head to Camshaft Housing oil port (9 replies - 3852 views)

Claus, The service bulletin specifies o-ring No. A907E620Z for the cam housing.  This part number shows up in many Lotus parts suppliers lists but no one ...   03-07-2014 01:50 pm

Engine & Transmission > Cylinder Head to Camshaft Housing oil port (9 replies - 3852 views)

Yes. Service bulletin JN76-2 issued 3/10/76 discusses this but only refers to the tool for making the recess and the o-ring part number. ...   03-06-2014 03:07 pm

Engine & Transmission > Cylinder Head to Camshaft Housing oil port (9 replies - 3852 views)

I can't confirm the dimensions of the groove, but assuming the dimensions you have in your post are correct a metric o-ring of 8.0mm ID ...   03-05-2014 09:16 pm

Carburetors > Dellorto Manifold 40/45 (1 reply - 2295 views)

No changes required. The 40 and 45 are identical in size and mounting. The only difference is the bore size. For a stock ...   11-23-2013 01:22 am

Engine & Transmission > Good oil seal - bad oil seal (9 replies - 7342 views)

You should also confirm that the cam is not leaking oil through the bolt that holds the cam gear. I have found that the ...   10-22-2013 12:31 am

Cooling > Securing Water pump inlet "pipe" (7 replies - 4604 views)

It's a stud. If I recall it's an M8-1.25. Hose fitting slides directly on stud and secured with flat washer and lock nut. ...   10-19-2013 01:52 am

Engine & Transmission > Head bolt torque for hi compression engine? (7 replies - 4066 views)

I believe the nip spec is .004-.006" liner over block and .001" between adjacent liners. ...   10-11-2013 10:12 pm

Engine & Transmission > Head bolt torque for hi compression engine? (7 replies - 4066 views)

Make sure cylinder liner nip is correct. Especially between adjacent cylinders. ...   10-11-2013 03:20 pm

Carburetors > DHLA 45 Idle Mixture Setting Help (17 replies - 12209 views)

For a 2.2 liter your previously mentioned jetting should work fine. For a 2.0 liter JHPS recommended jetting mentioned by Jensen Healey should work ...   09-27-2013 08:47 pm

Carburetors > Carburetor (2 replies - 2563 views)

Assuming properly installed mixture screw the most common problems I have encountered: 1) Respective cylinder not firing - check spark and plug 2) Air leak at manifold ...   09-16-2013 06:54 pm

Electrical & Instruments > Starter running via the Ghost of Lucas? (23 replies - 11166 views)

Lucas Sport Coil DB105 has internal resistance of 3 ohms so it does NOT require ballast resistor. ...   08-21-2013 12:56 am

Electrical & Instruments > Starter running via the Ghost of Lucas? (23 replies - 11166 views)

I am not familiar with the Lucas Sport coil but you can check it with an ohm meter to see if it has internal resistance ...   08-21-2013 12:49 am

Electrical & Instruments > Starter running via the Ghost of Lucas? (23 replies - 11166 views)

The lower voltage via the ballast is supposed to benefit contact breaker point life. If you are using Petronix or equivalent setup you do ...   08-19-2013 09:56 pm

Electrical & Instruments > Starter running via the Ghost of Lucas? (23 replies - 11166 views)

Art, Your coil has an internal 3 ohm resistor and does not require the external ballast resistor. Therefore, the wire from the tach (white/slate) should ...   08-18-2013 01:49 pm

Electrical & Instruments > Starter running via the Ghost of Lucas? (23 replies - 11166 views)

Answerman is correct. The yellow/white wire provides 12v to coil bypassing ballast resistor only when starter solenoid is engaged, otherwise power comes from ...   08-17-2013 10:18 pm

Engine & Transmission > Timing gears (3 replies - 2219 views)

I have seen solid gears. The one in your pic looks fine. I would go back to basics and line everything up at ...   07-23-2013 01:05 pm

Fuel Stuff > Fuel type (3 replies - 3638 views)

Remember that the JH manual specifies RON. In the US the octane rating on the pump is (R+M)/2., that is, the average of the ...   07-16-2013 09:34 pm

Engine & Transmission > Camshaft resistance (2 replies - 1745 views)

You should be able to turn the cams by hand turning the cam cogs. Remember you are compressing valve springs so there will be ...   07-10-2013 03:57 pm

Brakes > Stuck rear brake, weak brakes (2 replies - 3029 views)

The vacuum booster diaphragm can be checked by seeing if it holds vacuum. If you do not have a vac pump or gauge try ...   06-28-2013 07:23 pm

Body & interior stuff > Yet another paint scheme question (1 reply - 1928 views)

My white JH came from the factory with black rockers (sills). I believe the coating was called "rock guard". When I restored it ...   06-26-2013 01:51 pm

Suspension > firewall steering shaft bushing (15 replies - 10745 views)

You must remove the bolt completely from the steering knuckle as it acts as a safety lock against the flat of the shaft. The ...   06-20-2013 01:34 pm

Engine & Transmission > 4-speed Gearshift Linkage Question (4 replies - 3480 views)

Check the parts manual schematic for the proper order of the pieces. If you do not have one you can see the schematic on ...   06-05-2013 12:18 am

Engine & Transmission > Crank case ventillation hose (5 replies - 3406 views)

The original design had the crankcase vent going to the "air box" at it's bottom where heavy vapors could condense and flow back to the ...   05-15-2013 09:51 pm

Engine & Transmission > removing cylinder head (10 replies - 4915 views)

I can't imagine pulling the head with the engine in the car. I believe you'll find it easier in the long run to pull ...   05-10-2013 05:00 pm

Fuel Stuff > pressure relieve valve (8 replies - 6754 views)

You can buy fuel check valves 1/4 or 5/16" on eBay or Amazon. The lines on both my cars had tiny check valves installed ...   04-04-2013 12:02 am

Fuel Stuff > pressure relieve valve (8 replies - 6754 views)

Do not forget that there is a check valve in the anti-syphon line. Jensen placed it completely inside the hose so most got thrown ...   04-02-2013 09:28 pm

Engine & Transmission > 40/45 DelOrtto's (6 replies - 3819 views)

It's been done. I do not know how well they work. There are a pair of converted 40 to 45s on eBay. ...   02-14-2013 12:34 am

Engine & Transmission > 40/45 DelOrtto's (6 replies - 3819 views)

On the top of each carb body there is casting identifying the carb. it should read DHLA45 or 40. Immediately after should be ...   02-13-2013 11:45 pm

Miscellaneous > Jensen-Healey in Yogurt Commercial (1 reply - 2795 views)

You are correct. Here is the commercial: http://www.ispot.tv/ad/7w1E/dannon-light-and-fit-greek-yogurt-no-ordinary-low-fat-yogurt ...   01-14-2013 01:10 pm

Body & interior stuff > interior trim (2 replies - 1864 views)

Macgregor in Canada lists it. I tried ordering a few times online but never received a response. Here is the link: http://www.macgregorukcarparts.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=JH-cockpit ...   12-27-2012 09:14 pm

Suspension > Suspension lock nuts (9 replies - 5837 views)

Metal expansion locknuts are available from mcmaster-Carr. That said, nylock grade 8 are stronger than original. Surprisingly, the original are only grade 5. ...   11-20-2012 12:43 am

Engine & Transmission > Replacing an alternator (7 replies - 4086 views)

I have replaced a Lucas with a Bosch and it fit the existing brackets and plugs exactly. The more amps the better. ...   07-03-2012 12:33 am

Electrical & Instruments > Battery Size and Type (10 replies - 13677 views)

It appears that some group 56 batteries have an extruded lip on the bottom that make them too wide. I've trimmed off the lip ...   06-24-2012 02:30 am

Suspension > Steering (7 replies - 5592 views)

Sounds like steering shaft knuckle is hitting exhaust manifold or corner of cam tower. It is not uncommon and is fixed by checking engine ...   06-12-2012 12:10 am

Engine & Transmission > Toyota W58 gearbox & bellhousing progress (10 replies - 8371 views)

Unfortunately I do not think you can get the volumes to make this economically feasible. I have done 3 W58 conversions, one using the ...   05-15-2012 01:22 pm

Body & interior stuff > Complete dash removal for dashpad install (5 replies - 4616 views)

They are not metric. Engine metric, body SAE. ...   02-16-2012 05:00 pm

Engine & Transmission > Engine and Transmission (8 replies - 3914 views)

Yes, I simply cut them from the appropriate shim stock with scissors. It cuts quite easily. I take particular care to make sure ...   12-03-2011 10:25 pm


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