|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
02-13-2023, 01:47 PM | #21 |
Senior Member
Join Date: May 2010
Location: on the Littlefield
Posts: 6,159
|
Re: Need some pistons Knurled
It is a way to increase the diameter when they are worn, a knurl is formed on the pistons, it is then filed some until the pistons fit the bore, usually done by feel,
|
02-13-2023, 01:54 PM | #22 |
Senior Member
Join Date: Sep 2019
Location: Fort Gratiot, Michigan
Posts: 2,296
|
Re: Need some pistons Knurled
|
Sponsored Links (Register now to hide all advertisements) |
|
02-13-2023, 04:09 PM | #23 |
Senior Member
Join Date: Nov 2010
Location: Lambsburg Va
Posts: 296
|
Re: Need some pistons Knurled
I can knurled pistons
|
02-13-2023, 05:25 PM | #24 | |
Senior Member
Join Date: Jun 2014
Location: Melbourne, Australia
Posts: 7,496
|
Re: Need some pistons Knurled
Quote:
Personally, I don't go that route because I don't think the saving is worth the time and effort required for a little more life.
__________________
I'm part of the only ever generation with an analogue childhood and a digital adulthood. |
|
02-13-2023, 11:21 PM | #25 |
Senior Member
Join Date: May 2010
Location: Campbell,CA, USA
Posts: 319
|
Re: Need some pistons Knurled
In the 1950's and 1960's, used car dealers or individuals who wanted to sell a worn-out car would have the engine rebuilt where the only new parts were a set of new gaskets and some paint.
In my area, "Automotive Engineering" was the place to go, and their radio jingo was "Make your car run like new". Instead of new parts, knurling was used on almost every wearing surface to reduce clearances. If I recall, the cost of a V-8 "rebuild" was $69.00. Without the engine in the car, the engine compartment could be steam cleaned to look like new, and the newly painted engine looked great to the potential customer. After purchase and 1000 miles, the engine and engine compartment were worse than before the rebuild. |
02-14-2023, 12:05 AM | #26 |
Senior Member
Join Date: May 2010
Posts: 886
|
Re: Need some pistons Knurled
Sponsored Links (Register now to hide all advertisements)
|
02-14-2023, 02:42 AM | #27 |
Senior Member
Join Date: Jul 2010
Location: Auckland, New Zealand
Posts: 515
|
Re: Need some pistons Knurled
I have a piston expander from 1930's called a Koetheriser. It expands by squeezing the skirt into a more cam-shaped form and then stress relieving the piston by shot blasting inside with small steel shot, so it holds the new closer tolerance shape at the skirt.
It has done many thousands of engines with great success over 80 yars and I still use it now. Most recently on a 2.5 litre Riley engine and a 34 V8. Apologies that it is not much help to the original poster, since I am too far away. But somewhat relevant to the topic and maybe interesting to a few SAJ in NZ Last edited by SAJ; 02-14-2023 at 05:00 AM. Reason: Added an apology for topic drift |
|
|
Sponsored Links (Register now to hide all advertisements) |
|