How to make a thrust washer thinner
Created by: Jamison70
Orig. Posting Date | User Name | Edit Date |
Oct 6, 2018 05:51PM | Jamison70 | Edited: Oct 6, 2018 05:53PM |
Oct 6, 2018 11:47AM | DRMINI | |
Oct 5, 2018 06:05PM | Jamison70 | |
Oct 5, 2018 04:26PM | DRMINI | |
Oct 5, 2018 01:44PM | jedduh01 | |
Oct 5, 2018 04:45AM | CooperTune | |
Oct 5, 2018 04:22AM | Alex | |
Oct 4, 2018 10:07PM | Spank | |
Oct 4, 2018 06:18PM | Jamison70 | |
Oct 4, 2018 05:00PM | Jamison70 | |
Oct 4, 2018 04:49PM | Spank | |
Oct 4, 2018 04:32PM | CooperTune | |
Oct 4, 2018 03:52PM | Jamison70 |
Total posts: 82
Last post: Jul 27, 2019 Member since:Jun 24, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
I would change the topic to thinning a c-ring if I could, because that is what I did. Here's some images of what I did to accomplish it. It seemed a little weird at first, but totally worked.
I purchased a sanding pad thing that goes into a drill and used some double faced tape to adhere it to the pad. I did sand down the pad to make it smoother. Then I used 400 grit sand paper and a wood block to move the sand paper around. I did use a drill press, not a cordless drill.
Jamie
I purchased a sanding pad thing that goes into a drill and used some double faced tape to adhere it to the pad. I did sand down the pad to make it smoother. Then I used 400 grit sand paper and a wood block to move the sand paper around. I did use a drill press, not a cordless drill.
Jamie
Total posts: 8645
Last post: Dec 16, 2020 Member since:Oct 27, 2000
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
Bevel towards block. To clear the crank radius.
Kevin G
1360 power- Morris 1300 auto block, S crank & rods, Russell Engineering RE282 sprint cam, over 125HP at crank, 86.6HP at the wheels @7000+.
Total posts: 82
Last post: Jul 27, 2019 Member since:Jun 24, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
Thanks for all the replies everyone. The piece that I’m reusing is the “C” ring, not the thrust washer. In my first post I mentioned I bought a new thrust washer.
Unfortunately I don’t have access to a machine lathe. I do have access to a drill press. I think I’m going to buy a sanding attachment for a drill at Harbor Freight and hot glue the c ring onto it. Then put it in the drill press and carefully push it into a sharpening stone. I figure I need to take off about .005” for it to fit right. I also figured it would be safer to take material off the c ring then it would the thrust washer. Let me know if you think I’m crazy.
BTW, which side does the bevel go towards? Primary gear or block?
Jamie
Unfortunately I don’t have access to a machine lathe. I do have access to a drill press. I think I’m going to buy a sanding attachment for a drill at Harbor Freight and hot glue the c ring onto it. Then put it in the drill press and carefully push it into a sharpening stone. I figure I need to take off about .005” for it to fit right. I also figured it would be safer to take material off the c ring then it would the thrust washer. Let me know if you think I’m crazy.
BTW, which side does the bevel go towards? Primary gear or block?
Jamie
Total posts: 8645
Last post: Dec 16, 2020 Member since:Oct 27, 2000
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
Quote:
Originally Posted by Alex
Quote:
Originally Posted by Jamison70
I am trying to re-use the one from my 998 donor engine. However, without the trust washer installed, the C ring fits.
Kevin G
1360 power- Morris 1300 auto block, S crank & rods, Russell Engineering RE282 sprint cam, over 125HP at crank, 86.6HP at the wheels @7000+.
Total posts: 1649
Last post: Jun 22, 2022 Member since:Apr 30, 2009
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
just a thought... For the Primary gear, Measuring thrust , would or could you also ' sand the front of the primary gear bush? its 'sintered bronze? Soft?
Just a thought?
Just a thought?
Total posts: 4134
Last post: Oct 13, 2020 Member since:Oct 8, 2011
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
That's why I ask, you are not dealing with a crank thrust washer but a primary gear thrust washer. As suggested be sure you are installing right way around. Also mentioned it would be nice to have that problem. I keep a MK1 sliding door glass with different grades of emery paper spray glued to both sides. With a mike or dial caliper, you can sand a little and check for parallel and thickness. A machine shop won't have a good way to do it otherwise. Shoot for the low side of spec, with 1275s getting within spec at all can be a challenge. Steve (CTR)
Total posts: 10232
Last post: Mar 26, 2024 Member since:Mar 24, 1999
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
Quote:
Originally Posted by Jamison70
I am trying to re-use the one from my 998 donor engine. However, without the trust washer installed, the C ring fits.
Total posts: 6349
Last post: Oct 22, 2023 Member since:Mar 9, 1999
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
Oh, you're talking about the primary gear thrust on the snout of the crank. I've never had one that didn't fit because i was too thick. Usually there is too much slop because they are too thin and I've found that using a new C washer will help.
If you use an Old C washer, they are often worn/hammered with 2 divots where they hit the crank slots and you can flip them to play with the available clearance.
Also, pay attention that the thrust washers are beveled. Try flipping it around the other way (bevel goes inwards)
If you use an Old C washer, they are often worn/hammered with 2 divots where they hit the crank slots and you can flip them to play with the available clearance.
Also, pay attention that the thrust washers are beveled. Try flipping it around the other way (bevel goes inwards)
Total posts: 82
Last post: Jul 27, 2019 Member since:Jun 24, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
I am trying to re-use the one from my 998 donor engine. However, without the trust washer installed, the C ring fits.
Total posts: 82
Last post: Jul 27, 2019 Member since:Jun 24, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
I need to take off the thickness of a piece of paper... maybe. do I take some off the primary gear C ring? I can’t fit the C part in. Do I need to take it to a machine shop?
Total posts: 6349
Last post: Oct 22, 2023 Member since:Mar 9, 1999
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
reuse an old one on the pulley side, have the new one take the pressure when you are pushing on the clutch.
Done this many times to get the float I like
Done this many times to get the float I like
Total posts: 4134
Last post: Oct 13, 2020 Member since:Oct 8, 2011
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
|
What crank and block are you working with? There are different combinations that work together. Have you determined how much needs to come off? Steve (CTR)
Total posts: 82
Last post: Jul 27, 2019 Member since:Jun 24, 2014
|
Cars in Garage: 0
Photos: 0 WorkBench Posts: 0 |
I purchased a .112-.114 trust washer,which is the thinnest one they sell, and it’s still too thick. What do I do now? Do I need to take it somewhere and get it machined?
Jamie
Jamie