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Search found 422 matches

by williamsmotowerx
Fri Oct 04, 2019 2:24 pm
Forum: Engine Tech
Topic: Blow-by curve
Replies: 22
Views: 3303

Re: Blow-by curve

Run it with 2 stroke oil in the fuel. 32:1 or 24:1. See if that helps. Would be a fun quick test

I didn't even notice this was a super old post... my bad
by williamsmotowerx
Mon Sep 23, 2019 1:44 pm
Forum: Engine Tech
Topic: Theory of 4 valve poly quad cylinder heads.
Replies: 98
Views: 3354

Re: Theory of 4 valve poly quad cylinder heads.

Production GSXR Suzuki's had a service bulletin and special tool to check squish in early 90's.

If it was .028" you were good. If it was .026" you had to put a new head gasket on.

So yes, there was some tight squish stock
by williamsmotowerx
Wed May 15, 2019 6:56 pm
Forum: Shop Equipment - For Sale or Wanted
Topic: Land and sea dyno for sale
Replies: 1
Views: 674

Re: Land and sea dyno for sale

FYI, this dyno is capable of up to 300hp.

It comes with an test stand, or can be used directly on the end of a snowmobile tapered crankshaft.
by williamsmotowerx
Tue May 14, 2019 3:09 pm
Forum: Shop Equipment - For Sale or Wanted
Topic: Land and sea dyno for sale
Replies: 1
Views: 674

Land and sea dyno for sale

Land and sea dyno 9" water brake.

Full dyno, water tank, computer. $5800.

williamsmotowerx@gmail.com

Email me, will send pics
by williamsmotowerx
Tue Sep 04, 2018 6:02 pm
Forum: Engine Tech
Topic: cordless impact wrenches & drivers
Replies: 24
Views: 2261

Re: cordless impact wrenches & drivers

Ryobi. They're amazing and cheap. I use my 1/4 and 1/2 everday for 7 plus years. Just recently had to buy new batteries. Ryobi has best prices on batteries too.
by williamsmotowerx
Wed Aug 29, 2018 11:46 am
Forum: Engine Tech
Topic: How are limitations of dwell over nose estimated?
Replies: 136
Views: 9614

Re: How are limitations of dwell over nose estimated?

What happened to page 10? There was a bunch of posts deleted?
by williamsmotowerx
Tue Aug 28, 2018 2:32 pm
Forum: Engine Tech
Topic: How are limitations of dwell over nose estimated?
Replies: 136
Views: 9614

Re: How are limitations of dwell over nose estimated?

Dwelling over the nose is the most stressful thing you can do to a valvetrain.

You see it all the time in cam grinders who try to manipulate a copied cam.
by williamsmotowerx
Tue Jul 24, 2018 2:00 am
Forum: Engine Tech
Topic: How are limitations of dwell over nose estimated?
Replies: 136
Views: 9614

Re: How are limitations of dwell over nose estimated?

And obviously you've never designed a cam or measured one.

Those are not infinite design errors. Those graphs are of a measured cam. Those that have ground a cam or designed a cam know exactly what's going on in the "not smoothed enough" graphs
by williamsmotowerx
Tue Jul 24, 2018 1:40 am
Forum: Engine Tech
Topic: How are limitations of dwell over nose estimated?
Replies: 136
Views: 9614

Re: How are limitations of dwell over nose estimated?

As designed you don't you smoothing.

When you measure a cam as ground, you use smoothing sparingly to interpret the profile.

When you have a spike at peak lift it's the cam dwelling. Which causes the valve head to shake like a cold chihuahua. Pop goes the daisy
by williamsmotowerx
Tue Jul 24, 2018 1:16 am
Forum: Engine Tech
Topic: How are limitations of dwell over nose estimated?
Replies: 136
Views: 9614

Re: How are limitations of dwell over nose estimated?

joe 90 wrote:
Tue Jul 24, 2018 12:45 am
Acceleration is ALWAYS zero when at peak lift and zero velocity. So due to the sampling rate and lack of smoothing, that part is wrong.
Lack of smoothing? Why do you need smoothing for zero movement?

That's what you're saying when you have zero accel and velocity.
by williamsmotowerx
Thu Jun 14, 2018 12:30 pm
Forum: Engine Tech
Topic: how do hyper pistons work?
Replies: 61
Views: 4883

Re: how do hyper pistons work?

Running engine, what gets hot first? Piston

Heat travels to cold.

One of the jobs of cylinder is to absorb heat from piston and give it to air ir water.

Your test had both objects same temp. Not the case in running engine
by williamsmotowerx
Thu Apr 19, 2018 12:02 am
Forum: Engine Tech
Topic: Poll - Short Turn Curve Bowl Perspective
Replies: 56
Views: 4388

Re: Poll - Short Turn Curve Bowl Perspective

I think it has to do more with control, what you use for porting tools, how you hold the head.

I'm #2
by williamsmotowerx
Wed Apr 11, 2018 6:02 pm
Forum: Engine Tech
Topic: Tailgate porting..
Replies: 45
Views: 7999

Re: Tailgate porting..

How much did you sell the El Camino for? I've been looking for one
by williamsmotowerx
Thu Mar 08, 2018 3:52 pm
Forum: Engine Tech
Topic: Welding Cast Iron Block
Replies: 28
Views: 2888

Re: Welding Cast Iron Block

Why do they use roller bearings for the cam journals?
by williamsmotowerx
Wed Jan 17, 2018 12:38 pm
Forum: Engine Tech
Topic: Camshaft design
Replies: 95
Views: 10505

Re: Camshaft design

The rotation is set to CCW when you receive Audie box. To change rotation direction you have to change setting on box, not software. I had already measured 30 or so cams... when I had a suspicion my graphing was reading right to left. To verify i put a small piece of tape on opening side. Of course ...