General Rotary Tech Support Use this forum for tech questions not specific to a certain model year

3M Roloc disc suitable for iron de-glazing?

Old 02-24-19, 01:59 PM
  #1  
Card-carrying Rotorhead
Thread Starter
 
Unseen24-7's Avatar
 
Join Date: May 2006
Location: Manitoba, Canada
Posts: 457
Likes: 0
Received 0 Likes on 0 Posts
3M Roloc disc suitable for iron de-glazing?

I've recently discovered the 3M Roloc bristle disc and it works wonders on cleaning up stuck on gaskets, etc. This got me thinking, would this be too abrasive to deglaze irons and housings before assembly? Does anyone know if its abrasive enough to eat through the nitride or chrome surfaces?

Thanks!
Unseen24-7 is offline  
Old 02-24-19, 03:59 PM
  #2  
Spankin' the Wank
iTrader: (21)
 
highnitro12187's Avatar
 
Join Date: Dec 2007
Location: Dallas, Texas
Posts: 535
Received 2 Likes on 2 Posts
I've used the green pads for cleaning up around the irons where the coolant seals go, I'm sure the bristle discs would be ok for that too, just don't go too crazy with it.

Matt
highnitro12187 is offline  
Old 02-24-19, 11:02 PM
  #3  
Original Gangster/Rotary!

iTrader: (206)
 
GoodfellaFD3S's Avatar
 
Join Date: Mar 2001
Location: FL-->NJ/NYC again!
Posts: 29,999
Received 138 Likes on 111 Posts
I'm very familiar with and love using the (green) Roloc bristles for cleaning the oil pan sealing surface on the pan and engine side. I've also used it carefully to clean the sides of the rotor housings to help get rid of excessive coolant build up from old original engines. Having said that, I don't think it's a good idea to use on the sealing surfaces of the irons or rotor housings and don't recommend it.

My opinion:

On rotor housing/apex seal surfaces, brake cleaner & shop towels should be sufficient. Anything worse and the housing should be professionally resurfaced or used as a core/paperweight.

On the sides of the irons, again brake cleaner & shop towels, a razor blade, and if needed a little very fine grit sandpaper and water for a gentle 'wet sanding effect.'

Anything harsher and you're doing more harm than good. Best not to **** around too much with engine internals
GoodfellaFD3S is offline  
Old 02-25-19, 10:14 AM
  #4  
Card-carrying Rotorhead
Thread Starter
 
Unseen24-7's Avatar
 
Join Date: May 2006
Location: Manitoba, Canada
Posts: 457
Likes: 0
Received 0 Likes on 0 Posts
Thanks for the responses!

My thinking was that when you install new piston rings in an engine, you always do a deglaze to help wear-in or seat the new seals. To me it seems that should also be done for new side/corner/apex seals. Basically, can you deglaze or scuff up the irons and housings sufficiently for new seals without eating through all the hardened surface? I've heard of some guys doing some sort of wet-sanding to deglaze and the 3M Roloc discs seemed like a possibly gentler alternative.
Unseen24-7 is offline  
Old 02-25-19, 02:18 PM
  #5  
Rotary Enthusiast
 
Join Date: Jan 2005
Location: hsv al
Posts: 828
Received 7 Likes on 6 Posts
if they made roloc discs in a 12 inch diameter that you could but on a DA orbital then i would say go for it.

But the little 3" discs shouldn't be used to rough up a surface that should have a precise flatness or bore size.

You are better off getting some lapping compound and rubbing 2 irons together that trying to use a small roloc disc.
Gilgamesh is offline  
Old 02-26-19, 06:53 PM
  #6  
Armchair engineer
iTrader: (2)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: http://www.k2rd.com
Posts: 24,650
Likes: 0
Received 131 Likes on 117 Posts
i have used them on the surfaces that seal, like water seals, front cover gaskets, etc, and it works well. you do need to be a little careful that you're not overdoing it
j9fd3s is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Keith13b
Interior / Exterior / Audio
0
02-06-10 07:40 AM
89t295k
2nd Generation Specific (1986-1992)
12
09-16-07 10:43 PM
Rotaryrockstar
2nd Generation Specific (1986-1992)
8
07-11-04 02:37 AM
e_heinemann
2nd Generation Specific (1986-1992)
8
04-13-02 01:32 AM
milkman2k52
Single Turbo RX-7's
14
02-03-02 07:59 PM


Thread Tools
Search this Thread
Quick Reply: 3M Roloc disc suitable for iron de-glazing?


Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: