Piston
#1
Posted 18 January 2020 - 01:00 AM
#2
Posted 18 January 2020 - 11:15 AM
That is not much information, it would help if you could tell us what is the diameter of the piston, and the distance from the top of the piston to the center line of the gudgeon pin ?.
#3
Posted 18 January 2020 - 11:36 AM
No marking on the inside?
#4
Posted 18 January 2020 - 12:17 PM
#5
Posted 18 January 2020 - 12:54 PM
#7
Posted 19 January 2020 - 10:40 AM
Maybe. And maybe it is one of the very poor ones with a big slot either side in the oil control ring that makes then only fit fir a standard engine.
normally there is info on the inside.
get hold of the pistons and stop guessing.
#8
Posted 19 January 2020 - 05:29 PM
It looks like a Hepolite for a 1098 engine, now at 0.020" oversize.
#9
Posted 20 January 2020 - 12:32 AM
Hello Nicklouse. Sorry, but I don't know what you mean with "maybe it is one of the very poor ones". Are you talking about the quality?Maybe. And maybe it is one of the very poor ones with a big slot either side in the oil control ring that makes then only fit fir a standard engine.
normally there is info on the inside.
get hold of the pistons and stop guessing.
Regards, Luis
Edited by PACINO, 20 January 2020 - 12:49 AM.
#10
Posted 20 January 2020 - 12:47 AM
#11
Posted 20 January 2020 - 02:45 PM
- Piston diameter 71,10mm
- Distance between head and base 70.2mm
- Distance head to gudgeon pin 37.15mm
#12
Posted 20 January 2020 - 04:43 PM
As most people will know in the meantime Federal Mogul has concentrated piston manufacturing with Nüral (Nürnberger Aluminiumwerke). Some of the old Hepolite designs are still available now with Nüral numbering.
For the big engines those are:
Hepolite Nüral Interchange.png 11.5K 4 downloads
Edit: Yes, sorry, not deck height but compression height is correct.
@Pacino: perhaps you can find a number somewhere, maybe in the inner part of the piston.
Nick is correct in this not being performance-oriented. In my list the only performance pistons are the 73.5 as they are the old STR310 Powermax ones.
Edited by r.tec, 21 January 2020 - 02:18 PM.
#13
Posted 20 January 2020 - 10:43 PM
#14
Posted 21 January 2020 - 12:27 AM
Theese are the measures:
- Piston diameter 71,10mm
- Distance between head and base 70.2mm
- Distance head to gudgeon pin 37.15mm
71.1mm bore is a plus twenty thou Cooper S piston, and 38.12mm ( only about 1mm out from your measurement ) from the top of the piston to the center line of the gudgeon pin would be a 1071 cc piston
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