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572 postsShowing posts 201-240 of 572

Carburetors > correct manifold for 40 mm Dellortos? (12 replies - 10056 views)

You stated that the Dellortos are 45mm DHLAs, and you quoted a Lotus part number for the manifold. That would be a match. ...   06-25-2019 04:42 am

Engine & Transmission > Valve clearances and Camshafts (67 replies - 115056 views)

Greg Fletcher wrote: I believe a 104 cam originally from Lotus would be marked on the nose with a "444".Correct. Lotus Markings are on the exposed bit ...   06-21-2019 05:15 pm

Engine & Transmission > Valve clearances and Camshafts (67 replies - 115056 views)

Dakota123 wrote: Weird... well, one groove looks a bit different than the other two now that I look more closely, so I’m betting it started life ...   06-21-2019 04:29 pm

Engine & Transmission > Valve clearances and Camshafts (67 replies - 115056 views)

LOTUS Cam ID . . . C . . . . . . D . . . . . . E . . . . ...   06-21-2019 01:34 am

Engine & Transmission > What cams do I have and is my timing off by a tooth? (15 replies - 15692 views)

See the file attachment in the previous message, #9. The upper-left view shows the pulleys. There's a dot on the bottom ...   06-20-2019 07:36 am

Engine & Transmission > What cams do I have and is my timing off by a tooth? (15 replies - 15692 views)

What type of ignition system do you have? Stock breaker points, an early electrronic ignition that uses magnets (Pertronix Ignitor) or a light ...   06-19-2019 05:32 am

Electrical & Instruments > where is the temperature sending unit located? (1 reply - 4107 views)

Ralph, See the temp sender, item 14 in the attached JPEG. It appears twice, once on each manifold, between the two carbs in each ...   06-13-2019 04:10 am

Engine & Transmission > Need to change out the Timing Belt Tensioner (23 replies - 35724 views)

Tom Bradley wrote: What I have had to do is rotate the cam pulley half a tooth or so CW, install the pulley over the cam ...   06-08-2019 04:20 am

Engine & Transmission > Need to change out the Timing Belt Tensioner (23 replies - 35724 views)

cjwilson wrote: It read 38 pounds. Maybe that's why it was off a tooth.The KR-1 has two scales. Are you sure you read 38 ...   06-08-2019 03:17 am

Engine & Transmission > Need to change out the Timing Belt Tensioner (23 replies - 35724 views)

That 'IS' the bearing. Unlike the early JH tensioner, there is no outer ring/ roller into which the bearings fit. The ...   06-06-2019 06:23 pm

Engine & Transmission > What cams do I have and is my timing off by a tooth? (15 replies - 15692 views)

The main point is to stay focused while working, and be aware of where the pistons are before independently rotating the cams. Which ...   06-03-2019 09:38 pm

Engine & Transmission > What cams do I have and is my timing off by a tooth? (15 replies - 15692 views)

cjwilson, Draw in the imaginary centerline between the pulleys, and that photo pretty much confirms that, "IF" you wish to preserve the Original JH 115° ...   06-03-2019 05:31 pm

Engine & Transmission > What cams do I have and is my timing off by a tooth? (15 replies - 15692 views)

cjwilson wrote: When I purchased this car years ago, I remember the PO saying something about upgraded cams. I am wondering if I have the 2.2 ...   06-02-2019 04:59 pm

Engine & Transmission > What cams do I have and is my timing off by a tooth? (15 replies - 15692 views)

...   06-02-2019 04:33 pm

Engine & Transmission > What cams do I have and is my timing off by a tooth? (15 replies - 15692 views)

cjwilson, In your photo of the crank position, it's a little past TDC. Not a biggie, but accuracy helps when you're trying to judge ...   06-02-2019 04:04 pm

Engine & Transmission > Need to change out the Timing Belt Tensioner (23 replies - 35724 views)

Frank Schwartz wrote: Which one in particular? Seems they are for V belts...Frank, Of the various Krikit models, use only the KR-1. And read ...   05-28-2019 03:28 am

Engine & Transmission > Need to change out the Timing Belt Tensioner (23 replies - 35724 views)

Frank, See message #4, above, for tension to use with the Gates Racing BLUE timing belt (both trapezoidal and round-tooth HTD). Lotus specified the Burroughs BT-33-86J gauge, ...   05-28-2019 03:06 am

Engine & Transmission > Need to change out the Timing Belt Tensioner (23 replies - 35724 views)

Chris, A 'thin' wrench is easier to bend, and easier to use in the tight space. And torque capacity isn't a factor for simply ...   05-25-2019 06:13 pm

Engine & Transmission > Need to change out the Timing Belt Tensioner (23 replies - 35724 views)

cjwilson, Have you replaced timing belts before? The 907 is an interference engine, which means that if the timing is off, or if the ...   05-23-2019 04:16 pm

Engine & Transmission > Main Bearing Clearance (12 replies - 28269 views)

Have you ever read about Lotus carb, cam or ignition specs, and wondered what a "Spec" number meant, like Spec 5 or Spec 9? ...   05-21-2019 05:56 pm

Engine & Transmission > Main Bearing Clearance (12 replies - 28269 views)

Oops... I should give up on writing technical stuff at 2:00AM. In message #7, I originally gave a URL to Section TDB (910 ...   05-21-2019 04:45 pm

Engine & Transmission > Main Bearing Clearance (12 replies - 28269 views)

redracer wrote: Thanks once again Tim; I'll print these "updates" & put them in my shop manual. Keep rolling!, bruceYou're welcome. But if you have ...   05-21-2019 04:07 pm

Engine & Transmission > Main Bearing Clearance (12 replies - 28269 views)

TDA - Technical Data, A - Engine, Naturally Aspirated 907, 912LC & 912HC From the Lotus 1980-87 Service Notes (aka Workshop Manual) https://tinyurl.com/yxfsfvrl TDA Download a ...   05-21-2019 03:45 pm

Engine & Transmission > Main Bearing Clearance (12 replies - 28269 views)

Dakota123 wrote: Many thanks, guys. Strictly out of curiosity, any data, anecdotal or otherwise, on what running clearances open up to once up to operating ...   05-21-2019 03:45 pm

Engine & Transmission > Main Bearing Clearance (12 replies - 28269 views)

Crankshaft Journals & Balance Main Journals: 63.487 - 63.513 mm (2.4995 - 2.5005 inch) Outside Dia, #1, 2, 3, 4 63.500 - 63.513 mm (2.5000 ...   05-21-2019 06:43 am

Engine & Transmission > Rear mount Turbo (6 replies - 7740 views)

Or Supercharge it... ...   04-26-2019 05:16 am

Engine & Transmission > Rear mount Turbo (6 replies - 7740 views)

If there is a 'pro' to such a set-up, it's far out-weighed by the cons. First and foremost, such a system would have ...   04-25-2019 06:31 am

Wheels > MK1 Lug nut size and or source for a replament set (5 replies - 9838 views)

The Workshop Manual says 51 Lbs-ft (7.05 Kg-m). ...   04-04-2019 03:41 pm

Fuel Stuff > Engine (5 replies - 7574 views)

Steve, What is the shop's hourly rate ($$/hr). Don't be shy... ask. That's a fair question that you should have asked up ...   03-15-2019 08:34 pm

Fuel Stuff > Fuel tank vent lines...etc. (21 replies - 37435 views)

Rick, Sorry to keep you waiting... I don't visit the JHPS site every day. I'm a Lotus guy who tries to help with 907 ...   02-13-2019 10:20 pm

Fuel Stuff > Fuel tank vent lines...etc. (21 replies - 37435 views)

I've just read through this thread. There are two functions & parts being discussed in different posts, and it appears to me that ...   02-07-2019 07:09 pm

Brakes > Removing the rear brake brake back plate (2 replies - 5163 views)

JPJH wrote:It looks like you need to take the axle apart.You're right. Pull the axle shafts out of the housing. Or, ...   12-27-2018 05:09 am

Carburetors > Rebuild or upgrade? (14 replies - 16660 views)

There should be two gaskets in the choke (aka, enrichment device). One internal to the choke itself, and one between the choke and ...   12-20-2018 06:26 pm

Carburetors > Rebuild or upgrade? (14 replies - 16660 views)

Constant Depression carburetors, like Zenith-Strombergs & SUs don't have the crisp throttle response that's typical of a venturi carb. Opening the throttle starts ...   12-19-2018 03:58 am

Body & interior stuff > carburetor (4 replies - 6243 views)

Jomac, Your first message sounds familiar to me. For starters, replace the fuel filter, preferrably with a large one. Then inspect the contents of the ...   11-16-2018 05:55 pm

Miscellaneous > MK I vs MK II Differences (4 replies - 7071 views)

DonBurns wrote: I don't think rope seals were the distinguishing factor. Only very early Mark I had those. Correct? All Mk I 907s had rope ...   11-10-2018 08:17 pm

Fuel Stuff > Fuel Pump vs Fuel Lines (42 replies - 43624 views)

When you're standing in front of the car, looking at the front of the engine, it's normal running direction is CLOCKWISE. That includes ...   11-08-2018 06:17 pm

Fuel Stuff > Fuel Pump vs Fuel Lines (42 replies - 43624 views)

Randallclary@icloud.com wrote: Thanks Tim. Do my other comments seem ok?No problems. Tim ...   11-08-2018 04:29 pm

Fuel Stuff > Fuel Pump vs Fuel Lines (42 replies - 43624 views)

Close, but not quite. The firing order is 1-3-4-2. The cylinders fire from center out, front pair, then rear pair. So 2-1-3-4-2-1-3-4... Since ...   11-05-2018 04:00 pm

Fuel Stuff > 1976 Jensen GT (12 replies - 14232 views)

The Workshop Manual specifies an SU AUF 300 pump as standard. That pump's pressure output is 2.7 psi 'minimum' (2.7-3.8 psi range). ...   10-25-2018 12:59 am


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