<VV> - Flywheel bolts, tapering,and ring questions

Tue May 27 10:36:59 EDT 2014

Taper bolts are often used to center a bolt in a hole, and along with other 
bolts, thereby making a part fit , located where one wants it. The large 
ring is a reinforcement for the tapered plate center section of the flywheel 
(tapered plate - provides a shock absorber-like effect to assist the 
drivetrain). In machinery, often fine thread screws of a stronger material, 
like a Grade 8, are used to fasten pieces without lock-washers.  In the case 
of the Corvair crankshaft to flywheel bolts, the bolt heads are shallow for 
clearance to the clutch disk.

Chuck S
----- Original Message ----- 
From: "Charlie via VirtualVairs" <virtualvairs at corvair.org>
To: "'Daniel Monasterio González'" <dmonasterio at hotmail.com>
Cc: <virtualvairs at corvair.org>
Sent: Tuesday, May 27, 2014 1:16 AM
Subject: <VV> 1967 Monza PG -> 4 Speed Conversion - Flywheel bolts, 
tapering,and ring questions

Thanks for the clarification

More thoughts:

I thought the "taper" was to tighten the bolt as it got deeper into the
part, for a tighter fit, to prevent loosening due to vibration, etc?

Is the point of the flywheel "ring" that it acts as a single lock washer,
since it is "softer" than the flywheel center itself?

Charlie

-----Original Message-----
From: Daniel Monasterio González [mailto:dmonasterio at hotmail.com]
Sent: Monday, May 26, 2014 1:47 PM
To: Charlie
Subject: FW: <VV> PS : Memorial Day ~ need/want (local) clutch fork for 1967
Monza PG -> 4 Speed Conversion

Sorry,

I got confused between taper and shoulder. I understood "tapered" as
"shouldered".

Think I still need to check my English, oftenly.

Daniel

On 26/05/14 15:17, "Daniel Monasterio González" <dmonasterio at hotmail.com>
wrote:

>Pressure plate to flywheel bolts must be tapered to keep both parts
>centered.
>
>Flywheel to crankshaft bolts don't need any taper as the flywheel
>centering is on the crank hub.
>
>Daniel
>
>On 26/05/14 14:53, "Charlie via VirtualVairs"
><virtualvairs at corvair.org>
>wrote:
>
>>Are the flywheel and pressure plate bolts supposed to be tapered ?
>>
>>I have 12 (6 each) grade 8, but not tapered, so do I need to get
>>tapered bolts?
>>
>>Thanks again~
>>
>>Charlie
>>
>>
>>-----Original Message-----
>>From: Charlie [mailto:chaz at properproper.com]
>>Sent: Monday, May 26, 2014 12:50 PM
>>To: 'shortle'
>>Cc: 'virtualvairs at corvair.org'
>>Subject: Memorial Day ~ need/want (local) clutch fork for 1967 Monza
>>PG
>>-> 4
>>Speed Conversion
>>
>>Yep, I knew that, hence I asked : Anyone (local) in the Riverside /
>>Hemet area have on I could pick up while I'm "Memorializing" my Vair
>>this weekend?
>>
>>That way I could go get it myself sans FedEx USPS (or, ugh, UPS)?
>>
>>I wanted to mate up the trans and case and the rest can wait until it
>>actually gets in the car.
>>
>>I can have the shifter, t/o bearing, clutch disk, etc, but not the
>>elusive clutch fork.
>>
>>When I insert the mated up trans and case in the car, then I'll need
>>the shift tube, clutch pedals, etc, but that's the next step (or the
>>one after
>>that?) ~
>>
>>Thanks for your insights though ~ always helpful !
>>Charlie
>>
>>
>>-----Original Message-----
>>From: VirtualVairs [mailto:virtualvairs-bounces at corvair.org] On Behalf
>>Of shortle via VirtualVairs
>>Sent: Monday, May 26, 2014 12:39 PM
>>To: Jay Maechtlen; Charlie; virtualvairs at corvair.org
>>Subject: Re: <VV> Memorial Day ~ need clutch fork for 1967 Monza PG ->
>>4 Speed Conversion
>>
>>"ask the list"? I drove by Fed Ex and the Post Office and both were
>>closed today. Happy Memorial Day! And since there are many parts
>>needed for a conversion like this, I would probably try to find a
>>complete "parts donor"
>>car. I would not just accept a box of stuff thinking "this is all you
>>will need".
>>Timothy Shortle in Durango Colorado 81301
>>
>>
>>-----Original Message-----
>>>From: Jay Maechtlen via VirtualVairs <virtualvairs at corvair.org>
>>>Sent: May 25, 2014 12:19 AM
>>>To: Charlie <chaz at properproper.com>, virtualvairs at corvair.org
>>>Subject: Re: <VV> Memorial Day ~ need clutch fork for 1967 Monza PG
>>>->
>>>4 Speed Conversion
>>>
>>>Of course, here in SoCal you have California Corvair.
>>>But this is Sat night, and I'm guessing that Jeff is gone Sun and Mon.
>>>
>>>- which is another good reason to ask the list!
>>>
>>>On 5/24/2014 10:50 AM, Charlie via VirtualVairs wrote:
>>>> I'm
>>>>
>>>> Primarily, I need a clutch fork for the Saginaw 4-speed I am mating
>>>> up to my
>>>> 140 to get the whole shebang mounted, if at all possible.
>>>>
>>>> I had a lead on a clutch fork, but it fell through, and if I'm not
>>>> mistaken, it needs to be installed before I mate up the trans with
>>>> the block (unless I figure out a way to squeeze it through the hole
>>>> ;>}~? (just kidding, right?)
>>>>
>>>> Anyone in the Riverside / Hemet area have on I could pick up while
>>>> I'm "Memorializing" my Vair this weekend?
>>>>
>>>> Enjoy your Corvair this weekend ~ I'll be working on mine (which is
>>>> my idea of fun when I have the time!)
>>>>
>>>> Charlie
>>>>
>>>>
>>>
>>>--
>>>Jay Maechtlen SoCal '61 2-dr modified w/fiberglass skin, transverse
>>>3.8 Buick V6 TH440T4 trans
>>>
>>>---
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