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What should I consider when switching to a high compression head? |
Posted by: Hurvinek - 21-09-2024, 10:34 PM - Forum: Forum chat...
- Replies (11)
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Hi folks!
I am unsure...
Can I just change the cylinder head without any problems, or are there other things that need to be done?
Do I maybe need to change the ignition timing, adjust the valves, or something else? Or just screw the other head on... bam, done? Using the correct head gasket is obvious.
If someone could explain this to me, I would be happy.
Thank you very much!
Oliver
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Bacon Slicer Starter question |
Posted by: Robin Gooders - 20-09-2024, 11:56 AM - Forum: Forum chat...
- Replies (6)
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Good Morning.
I hope someone may be able to help me with this ? I'm trying to put together a good Bacon Slicer Starter from two units, and in the process also cure the annoying habit my old unit has of the pinion creeping forward and touching the flywheel ring gear (Ting ting noise)
My question is, should the sprung damping pin, which prevents the pinion from creeping, bear on the bottom of the spiral thread/ groove? or the outside/ top of the groove? Of the two units I have, one seems to naturally align to the bottom of the groove, and one to the outside. Not sure if this is as a result of mixing up parts from different units. Anyone know which is correct please?
Best wishes,
Robin
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Rear shocks |
Posted by: Erich - 20-09-2024, 03:17 AM - Forum: Forum chat...
- Replies (2)
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Hi All,
My son and I returned from the 90th Anniversary week and I can proudly say he is now a prewar convert! We have been working on finishing my Ulster Rep. A few things have cropped up. One concerns the rear shocks. The chassis is a short wheel base one, but with the rear axle changed to the wider later one. It was done fairly well. But the shocks are a bit of a dog's dinner. As they came, there were no brass disks and only one spring cup which was on the nut side with the raised portion facing outward. The nut was a nylock. According to Woodrow, there should be two spring cups, with the raised portions facing into the spring, I presume to help locate it. However, when I reversed the one existing spring cup, the ID of the spring was too small to accept the raised portion of the spring cup. So, it appears that I have springs with too small an ID to accept the raised portion of the spring cup. These could be aftermarket springs that are stiffer as the car was once raced, hence the mods with the semi girling brakes, wider rear axle, boxed chassis, etc.
Should I reassemble with the one spring cup reversed as it apparently once worked well, or get new springs and spring cups and assemble as stock. Another question is how much tension on the spring? We've set both at 15 psi.
Erich in Seattle
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