Wiseco piston ring compressor

General engine tech -- Drag Racing to Circle Track

Moderator: Team

Post Reply
Matt80
Member
Member
Posts: 75
Joined: Tue Jun 09, 2015 7:30 am

Wiseco piston ring compressor

Post by Matt80 » Wed Apr 11, 2018 11:30 am

Hi, never had one in my hand, so can't imagine if it would be doable to enlarge a 3.385" piston ring compressor to 3.395" on a lathe as they do have a teflon coating
Thanks

pamotorman
Guru
Guru
Posts: 2705
Joined: Thu Mar 06, 2014 11:55 pm

Re: Wiseco piston ring compressor

Post by pamotorman » Wed Apr 11, 2018 12:24 pm

i machined my own ring compressors out of steel and used no coating. if they are made from aluminum that may be a problem as it is softer than steel

Matt80
Member
Member
Posts: 75
Joined: Tue Jun 09, 2015 7:30 am

Re: Wiseco piston ring compressor

Post by Matt80 » Wed Apr 11, 2018 12:34 pm

pamotorman wrote:
Wed Apr 11, 2018 12:24 pm
if they are made from aluminum that may be a problem as it is softer than steel
Ah, true. Can you please tell me the lenght, top diameter and taper angle you used on yours?

pamotorman
Guru
Guru
Posts: 2705
Joined: Thu Mar 06, 2014 11:55 pm

Re: Wiseco piston ring compressor

Post by pamotorman » Wed Apr 11, 2018 1:18 pm

Matt80 wrote:
Wed Apr 11, 2018 12:34 pm
pamotorman wrote:
Wed Apr 11, 2018 12:24 pm
if they are made from aluminum that may be a problem as it is softer than steel
Ah, true. Can you please tell me the lenght, top diameter and taper angle you used on yours?
i done that many years ago so i have no idea. i got rid of all those tools i had when i retired 22 years ago. sorry i can not help

Matt80
Member
Member
Posts: 75
Joined: Tue Jun 09, 2015 7:30 am

Re: Wiseco piston ring compressor

Post by Matt80 » Wed Apr 11, 2018 1:21 pm

pamotorman wrote:
Wed Apr 11, 2018 1:18 pm
Matt80 wrote:
Wed Apr 11, 2018 12:34 pm
pamotorman wrote:
Wed Apr 11, 2018 12:24 pm
if they are made from aluminum that may be a problem as it is softer than steel
Ah, true. Can you please tell me the lenght, top diameter and taper angle you used on yours?
i done that many years ago so i have no idea. i got rid of all those tools i had when i retired 22 years ago. sorry i can not help
Ok thanks

User avatar
MadBill
Guru
Guru
Posts: 13592
Joined: Tue Nov 15, 2005 10:41 am
Location: The Great White North

Re: Wiseco piston ring compressor

Post by MadBill » Wed Apr 11, 2018 1:56 pm

Most compressor rings have a short parallel bore at the bottom of the taper, but I don't see that it's presence is critical. Therefore, you should be able to chuck it up in a lathe and face off the small end until the exit diameter 'grows' to the desired size. If you know the taper angle, a little finger work with the trig functions on a calculator will even tell you how far to go the achieve the required diameter.
Felix, qui potuit rerum cognscere causas.

Happy is he who can discover the cause of things.

Matt80
Member
Member
Posts: 75
Joined: Tue Jun 09, 2015 7:30 am

Re: Wiseco piston ring compressor

Post by Matt80 » Wed Apr 11, 2018 2:06 pm

MadBill wrote:
Wed Apr 11, 2018 1:56 pm
Most compressor rings have a short parallel bore at the bottom of the taper, but I don't see that it's presence is critical. Therefore, you should be able to chuck it up in a lathe and face off the small end until the exit diameter 'grows' to the desired size. If you know the taper angle, a little finger work with the trig functions on a calculator will even tell you how far to go the achieve the required diameter.
Sure, thanks
Just wanted to know, if possible, the taper angle and the increase in percentage at the top diameter used on the Wiseco/ARP/etc ones :)

rfast racing
New Member
New Member
Posts: 26
Joined: Wed Jan 04, 2012 4:06 pm

Re: Wiseco piston ring compressor

Post by rfast racing » Wed Apr 11, 2018 2:21 pm

My 4.030 tapered ring compressor starts out at a .250 thick piece of material 1.800 in long the taper is 8 degrees .300 from the end is the bore size so the taper is only 1.5 in long

Matt80
Member
Member
Posts: 75
Joined: Tue Jun 09, 2015 7:30 am

Re: Wiseco piston ring compressor

Post by Matt80 » Wed Apr 11, 2018 2:42 pm

rfast racing wrote:
Wed Apr 11, 2018 2:21 pm
My 4.030 tapered ring compressor starts out at a .250 thick piece of material 1.800 in long the taper is 8 degrees .300 from the end is the bore size so the taper is only 1.5 in long
Thanks!

Post Reply