We are currently running on the new domain and server: www.Speed-Talk.com

IMPORTANT: Update your bookmarks to https://www.speed-talk.com/forum/
(Right-click the URL and select "Bookmark this link")

Search found 252 matches

by strokersix
Mon Oct 14, 2019 1:30 pm
Forum: Engine Tech
Topic: flywheel to balancer weight proportion- inline 6
Replies: 48
Views: 1529

Re: flywheel to balancer weight proportion- inline 6

Harry, I drilled and tapped a hole in the front of my water pump near the inlet and plumbed 3/8 hard line from there. Source is also 3/8 hard line from the cylinder head. Both lines are plumbed under the manifold in the usual way. Seems to have plenty of heat. Point of reference if you find it helpf...
by strokersix
Sat Oct 12, 2019 9:21 am
Forum: Engine Tech
Topic: flywheel to balancer weight proportion- inline 6
Replies: 48
Views: 1529

Re: flywheel to balancer weight proportion- inline 6

The more I hear about the fluid filled type dampners, the less I want to use one on this particular engine. Why? Please post links or explain. I am not arguing, just want to learn. As I've said before, I'm running a modified SBC streetdampr on my inline six. If that is a bad choice I want to know w...
by strokersix
Tue Oct 08, 2019 6:25 pm
Forum: Engine Tech
Topic: Do pushrods generally bend in the middle or near the lifter end?
Replies: 10
Views: 524

Re: Do pushrods generally bend in the middle or near the lifter end?

Pushrod distributed mass means that pushrod stress at the lifter end will be greater than pushrod stress at the rocker end at valve opening acceleration. In other words, the lifter end has to accelerate the pushrod but the rocker end does not. Significant or not, I have no idea.
by strokersix
Mon Sep 23, 2019 9:26 am
Forum: Engine Tech
Topic: Richer AFR in higher gears
Replies: 47
Views: 1022

Re: Richer AFR in higher gears

Aerodynamic pressure perhaps?
by strokersix
Sat Sep 14, 2019 7:22 am
Forum: Engine Tech
Topic: Torque To Yield
Replies: 30
Views: 938

Re: Torque To Yield

It is wrong to assume that if a bolt is rotated x amount of degrees, then the bolt will stretch y amount of inches. The amount the bolt stretches will depend on the material it is made of & the thickness/composition of the material it is clamping. The amount of 'stretch' could be shared by the bolt...
by strokersix
Sat Sep 14, 2019 12:26 am
Forum: Engine Tech
Topic: Torque To Yield
Replies: 30
Views: 938

Re: Torque To Yield

Here is another "twist" to bolted joints: When using torque to tension a fastener there is not only a tensile force which is what we are after and what we all think about but there is also a torsion force in the fastener. Stress in the fastener is the combination of tensile and torsion. Over time th...
by strokersix
Thu Sep 12, 2019 8:55 am
Forum: Engine Tech
Topic: Torque To Yield
Replies: 30
Views: 938

Re: Torque To Yield

boltscience is a good resource. Bickford's "Introduction to the Design and Behavior of Bolted Joints" Is another if you want more. Pay special attention to joint diagrams. Then in every bolted joint discussion, design trade-off, parts swap, etc. think about how it affects the joint diagram and you w...
by strokersix
Wed Sep 11, 2019 12:50 pm
Forum: Engine Tech
Topic: Torque To Yield
Replies: 30
Views: 938

Re: Torque To Yield

As I expect most here know, using torque to achieve fastener stretch is notoriously variable due to inconsistent friction effects underhead and threads. Yield point of a fastener is likely less variable. OEMs use this to optimize the bolted joint. Local yield underhead is a guarantee in my opinion. ...
by strokersix
Wed Sep 11, 2019 10:14 am
Forum: Engine Tech
Topic: Torque To Yield
Replies: 30
Views: 938

Re: Torque To Yield

How it works: In a typical bolt the underhead radius sees a significant stress concentration. TTY actually causes the material in that radius to yield. If you then removed the bolt and could look inside you will find residual compressive stress in that radius, not unlike rolled fillets in a cranksha...
by strokersix
Tue Aug 27, 2019 1:06 pm
Forum: Engine Tech
Topic: Titanium solid lifters
Replies: 12
Views: 1010

Re: Titanium solid lifters

englertracing wrote:
Mon Aug 26, 2019 1:11 am
I'm wondering if they are just titanium nitrided, and when a numb nuts sells it, it becomes just titanium
Yup. My first thought too.
by strokersix
Thu Aug 22, 2019 3:12 pm
Forum: Engine Tech
Topic: pressed in pins (rod temperature)
Replies: 35
Views: 1226

Re: pressed in pins (rod temperature)

ProPower engines wrote:
Thu Aug 22, 2019 12:58 am
sm. end to purple or burnt black. Way too hot. the pin will get the
edge heated and stick part way through then its all over till you press it out and start again.
Interesting point about heat transfer to the pin
by strokersix
Tue Aug 13, 2019 4:03 am
Forum: Engine Tech
Topic: Dipsticks
Replies: 18
Views: 507

Re: Dipsticks

No need to make measurements. Check oil level with old stick. Put in new stick and then mark it where the oil level is. A center punch mark works fine.
by strokersix
Tue Aug 13, 2019 3:42 am
Forum: Engine Tech
Topic: Dipsticks
Replies: 18
Views: 507

Re: Dipsticks

A small steel tape measure might be a source of flexible strip if you try to make your own. Just a thought.
by strokersix
Thu Aug 08, 2019 10:16 pm
Forum: Race Cars & Parts - For Sale or Wanted
Topic: 1969 Chevy BB Factory 2 bbl intake-rare
Replies: 2
Views: 247

Re: 1969 Chevy BB Factory 2 bbl intake-rare

I have one of these with matching carb. I think it works great to test fire new engines.
by strokersix
Fri Jul 05, 2019 1:05 pm
Forum: Engine Tech
Topic: carbon fiber push rods and wrist pins
Replies: 45
Views: 5141

Re: carbon fiber push rods and wrist pins

[/quote] Call them up, and ask them to bring a couple of the used rods they were running last year. [/quote] Agree, this would be very interesting and educational IF they can actually deliver. What kind of thread insert holds the bolt threads??? Carbon fiber/resin covers, intake manifold, maybe push...