|
Sponsored Links (Register now to hide all advertisements) |
|
|
Thread Tools | Display Modes |
09-16-2015, 02:27 PM | #1 |
Member
Join Date: May 2010
Posts: 94
|
Pressure plate bolts
How many of you guys are using shoulder bolts on your V8 pressure plate . If you are where are you getting them.Thanks John
|
09-16-2015, 02:50 PM | #2 |
Senior Member
Join Date: May 2010
Location: NorCal
Posts: 2,617
|
Re: Pressure plate bolts
John
Mr. Gasket sells those with the shoulder |
Sponsored Links (Register now to hide all advertisements) |
|
09-16-2015, 03:13 PM | #3 |
Member
Join Date: May 2010
Posts: 94
|
Re: Pressure plate bolts
The bolts they Sell have too long of a shoulder just like the rest of them. Thanks John
|
09-16-2015, 03:28 PM | #4 |
Senior Member
Join Date: May 2010
Location: Jordan, MN
Posts: 1,411
|
Re: Pressure plate bolts
Have you tried Roy Nacewicz?
www.fordbolts.com Page 17 of his Early V-8 catalog lists the following: R-692 Clutch and pressure plate assembly to flywheel attachment $ 3.95/pkg – 6 thick-headed bolts and lock washers: 1935-48 (12 pcs/pkg) Hope this helps.
Good Day! |
09-16-2015, 05:37 PM | #5 |
BANNED
Join Date: May 2010
Location: Gothenburg Nebraska Just off I-80
Posts: 4,893
|
Re: Pressure plate bolts
McCaster sells them in various length shoulders. If all else fails order them to the nearest 1/8 longer than what you need and size them in a lathe. Been there done that that with things other things. Just a thought. Rod
__________________
Do the RIGHT thing - Support the H.A.M.B. Alliance!!!! |
09-16-2015, 06:05 PM | #6 |
BANNED
Join Date: May 2010
Location: Bucks County, PA
Posts: 11,454
|
Re: Pressure plate bolts
Sponsored Links (Register now to hide all advertisements)
|
09-16-2015, 07:36 PM | #7 | |
Senior Member
Join Date: Dec 2010
Location: FRESNO, CA
Posts: 12,560
|
Re: Pressure plate bolts
Quote:
Bill W.
__________________
"THE ASSISTANT GURU OF STUFF" |
|
09-16-2015, 08:19 PM | #8 |
Senior Member
Join Date: May 2010
Location: NorCal
Posts: 2,617
|
Re: Pressure plate bolts
Huh?
I use them on my V8 clutch and they are the correct length, both shoulder and thread. |
09-16-2015, 10:43 PM | #9 |
Senior Member
Join Date: May 2010
Location: PASADENA, CA
Posts: 1,895
|
Re: Pressure plate bolts
Shoulder bolts locate clutch assembly on the flywheel better than bolts that are threaded all the way to the head. The shoulder needs to extend past the mounting surface of the clutch cover apx. 1/8 in or so and the threaded hole in the flywheel needs to be counter bored a little to allow room for the shoulder.
The clutch assembly needs to be balanced with the flywheel and marked so when removed, the clutch can be re-installed in the same orientation as it was when balanced. This may be a very small point but everything will be in better balance if there is no "slop" in the mounting bolts. Regular grade 5 or grade 8 bolts will not fit the holes in the clutch cover as tight as a shoulder bolt. A grade eight bolt will hold the clutch on the flywheel and there may not be a problem as such but a shoulder bolt will help keep things in better balance. With a slow speed Model A engine this is not as much as a problem but it can with more modern engines that rev. higher. Not using shoulder bolts can create a vibration that you can definitely feel. Actually, these are not really shoulder bolts. A true shoulder bolt has a length of the shank of the bolt that is a much larger diameter than the threaded part. I.E. the shoulder may be 1/2 in. dia. where the threaded part is 3/8 dia. I call bolts for a clutch 'clutch bolts" where the un-threaded part under the head is "full diameter" then the threads start. I.E. the "shoulder on a 3/8 in. clutch bolt would be full 3/8 dia. (.375 in.) and then the threads start. Regular grade 5 and grade 8 bolts will have the un-threaded portion under the head slightly smaller than the nominal bolt size. I am very fortunate to have a good speed shop just down the street that has a good selection of this type of hardware. They also do my balancing. My opinion, Chris W. Last edited by CWPASADENA; 09-16-2015 at 11:01 PM. Reason: CLARIFICATION |
09-17-2015, 06:21 AM | #10 |
Member
Join Date: May 2010
Posts: 94
|
Re: Pressure plate bolts
Chris W. Good reply Thanks John
|
09-17-2015, 06:51 AM | #11 |
BANNED
Join Date: May 2010
Location: Gothenburg Nebraska Just off I-80
Posts: 4,893
|
Re: Pressure plate bolts
Here is what came to mind when the OP used the term. I think the term long shanked would have been a better choice. Rod
http://m.partstown.com/is-bin/INTERS...FQtFaQod3vkJiw
__________________
Do the RIGHT thing - Support the H.A.M.B. Alliance!!!! |
09-17-2015, 08:40 AM | #12 |
Senior Member
Join Date: May 2010
Posts: 447
|
Re: Pressure plate bolts
I used the old shoulder bolts in half of the locations to be certain that the clutch plate was centered. Then used new regular bolts in the other locations to "freeze" the plate in the correct position. Then replaced the old bolts with new ones.
|
|
|
Sponsored Links (Register now to hide all advertisements) |
|