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289 postsShowing posts 161-200 of 289

Engine & Transmission > Timing Belt Noise (6 replies - 2458 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 - 2458 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 - 9280 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 - 9280 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 - 9280 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 - 9280 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 - 9280 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 - 14633 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 - 14633 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

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

New liners need to be fitted to the block as required to produce the correct 'nip'... the liner's exposure above the block deck. ...   04-26-2015 05:20 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Barthol, The liner bore is to be measured at 50mm down from top, across the thrust axis Grade A = 3.7510 - 3.7515" (95.275 ...   04-26-2015 04:24 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

The rings should not be gapped to a 'minimum', and there's such a thing as too tight. Each type of ring will have ...   04-25-2015 04:12 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Kim, 'What you describe' indicates the rings are the cause of your smoke problem. If you disassemble the engine again, then take advantage of the opportunity to ...   04-25-2015 03:52 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Barthol wrote: (Snip)... I got the below tolerances measured in 1/100 mm and they all looks to be more than double of the max allowed 4,5 ...   04-06-2015 03:02 am

Wheels > Motor oil viscosoity (12 replies - 6323 views)

rday wrote: Thanks All,    Your comment on a lighter viscosity oil affecting engine temperature makes me wonder if this is why the engine runs hot.  Around ...   03-31-2015 01:53 am

Engine & Transmission > Exhaust Header Removal and Cam Covers (15 replies - 6023 views)

Loosening the left engine mount, and jacking up the left side of the engine will both raise the engine, and rotate it to the right ...   03-30-2015 07:07 pm

Engine & Transmission > Exhaust Header Removal and Cam Covers (15 replies - 6023 views)

The original steel-asbestos-steel gasket between the header and the head aren't bad, but they do tend to blow over time. The exhaust manifold ...   03-30-2015 06:54 pm

Wheels > Motor oil viscosoity (12 replies - 6323 views)

Oil viscosities are ranges, not values (SAE 50 = 900-1300 Saybolt Universal Seconds at 100 F). It's possible for one 50wt oil to ...   03-30-2015 06:32 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Barthol wrote: (Snip)... Using a dealer gauge shows me a clearance of 0,75 mm between the liner and the piston again with the piston in the ...   03-29-2015 10:11 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Illustrations end up pretty lo-res by the time they're uploaded to JHPS. You can download clearer versions from my Dropbox account, here: https://www.dropbox.com/sh/kwl3ckub3in3wrm/AAA3CRJImDKvpslh-ySyQ_sza?dl=0 They're not ...   03-23-2015 09:49 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Review message #21. I've substituted a different JPEG attachment which illustrates a typical T-belt snubber (Aux Pulley location), the short spacers used with ...   03-23-2015 09:27 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Notice the front main seal housing on the left is for use with the early eccentric tensioner, and is similar to the J-H unit. The later ...   03-23-2015 07:21 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Here's an illustration showing the A/C compressor mounting brackets. Note the two welded-in bosses surrounding the bolt holes in the upper right of ...   03-23-2015 05:21 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Barthol wrote: (Snip)... I have a semi automatic tightener but I cannot find out how to mount it. It looks like I am missing threaded ...   03-22-2015 10:15 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Barthol wrote: (Snip)... I need to sort an issue with the belt tightening wheel . The bolt is pulling a little to the left when I ...   03-22-2015 09:48 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Barthol wrote: If I pull the engine out again and need to install my old engine I need to sort an issue with the belt tightening ...   03-22-2015 08:48 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Barthol wrote: I have no idea on how the bottom end is built. It was done from the Guy in Uk from who I bought ...   03-22-2015 08:40 pm

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

Good, they're more fun above 4500 rpm anyway. The 104/107 cam combination is the same as was used in the 912 HC. I've not ...   03-22-2015 06:01 am

Engine & Transmission > renovated engine burning oil (46 replies - 14633 views)

The 907 is not supposed to have valve guide seals. The engine is designed for high rpm operation, and that requires adequate lubrication ...   03-22-2015 05:43 am

Ignition > Static Timing Questions (9 replies - 4509 views)

user=1922]mcguan.2 wrote:I do not know if I have the petronix ignition. How can I tell?.Remove the distributor cap and look inside. If ...   01-26-2015 03:29 am

Carburetors > One more Jetting Question (4 replies - 2926 views)

Barthol wrote:To match the single carb barrels i have to open the air correction screw on the stronger barrel 5-6 turns , and this ...   01-26-2015 02:48 am

Ignition > Static Timing Questions (9 replies - 4509 views)

Mark Rosenbaum wrote about using a multi-meter. That will work, but I prefer to use a continuity light. The light only ...   01-21-2015 05:28 pm

Ignition > Static Timing Questions (9 replies - 4509 views)

Does the distributor still have the original breaker points, or has an electronic ignition system (like Pertronix) been installed? Just considering other things ...   01-21-2015 05:19 pm

Engine & Transmission > 907 Front Main Seal Centering Tool (2 replies - 1908 views)

I wanted to ask you first so I didn't step on any toes if the JHPS club store carried them. The Lotus OEM front seal tool ...   11-07-2014 06:53 pm

Engine & Transmission > 907 Front Main Seal Centering Tool (2 replies - 1908 views)

Greg, Does the JHPS store carry the 907 seal centering tools? Tim ...   11-06-2014 07:00 pm

Carburetors > Velocity Stacks (16 replies - 12705 views)

The Elite-Eclat airbox used to be available through Lotusbits in the UK. However, I talked with Mike Taylor a while ago, and he ...   10-06-2014 12:18 am

Carburetors > Velocity Stacks (16 replies - 12705 views)

Shorter air horns to optimize higher rpm performance, Longer air horns to tune for low rpm performance. Given the range of available air horn lengths, and the ...   10-04-2014 08:13 pm

Electrical & Instruments > GT Rear Washer Pump Wanted (3 replies - 3857 views)

Check out Europa Specialist Spares. They stock a lot of brightwork, mirrors, lights... and windscreen washers... as used on many vintage British cars. Website: http://www.europaspares.com/ Washer ...   10-04-2014 07:42 pm

Ignition > Reinstalling the Lucas 25D distributor (4 replies - 3658 views)

For removal, most people loosen the clamp and pull the distributor out, leaving the clamp attached to the oil pump housing. If that's ...   09-10-2014 12:59 am

Carburetors > Webers or ? (23 replies - 13953 views)

Jay, Nice to meet you and your Jensen-Healey face-to-face this morning A 20W-50 oil is recommended. The 907's lubrication system is designed for relatively low ...   09-09-2014 08:32 pm


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