Building up a spare 1098

Common upgrades - A-Series mods, brakes,wheels, handling, interior.

Re: Building up a spare 1098

Postby Monty-4 » Mon May 01, 2017 3:55 pm

Cam bearings, knackered?

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Re: Building up a spare 1098

Postby woodywoodchipper » Tue May 02, 2017 3:36 pm

yep they are, :(
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Re: Building up a spare 1098

Postby Monty-4 » Thu May 25, 2017 3:40 pm

Cam bearings have been replaced.

Build will come together over the next few weeks in-between work, holidays and so on. I have cam lube for everything but the bores (it says don't use there) so I gather I'm just supposed to smear those with engine oil before installing the pistons?

I've also been reading about running in procedures and many state that the engine must not be allowed to run too lean or too rich - how on earth are you supposed to manage that without running the engine to time it and setup the carb(s)?!
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Re: Building up a spare 1098

Postby woodywoodchipper » Tue May 30, 2017 7:48 pm

yes plenty oil on pistons on reassembly

get it running and tune it, do not over rev at this stage, dont forget to retorque head after warming up,
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Re: Building up a spare 1098

Postby Monty-4 » Wed Oct 04, 2017 3:32 pm

Engine is in but I couldn't get it to start last weekend. Fuel pump working and appropriate fuel smell emanates from carbs (yes plural I got carried away), plus I tested and had a spark. I think the timing was way, way out. I'm sure I checked I put the dizzy gear in the right way around but after finding TDC (yet again) and looking where the rotor arm is I had to rotate the dizzy about 40 degrees clockwise to line the leading edge of the arm up with lead #1's contact. I may just shuffle the leads around if it becomes a bother.

Now the starter motor has refused to work. Just a single loud click when the key is turned. Jump-starting did nothing and the motor worked when put directly across the battery, so I'm thinking solenoid (repros seem to be weak and unreliable, the posts flex a lot) or my engine earth needs serious attention.

Super frustrating when the project is so close to completion... except for that rusty wing... and the rear door. :roll:
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