Lykins Motorsports 427FE Build...

[lippy]

Lash is no big deal. I had never done it before this car. I verified once hot at 0.025" and then checked cold, which was 0.014". From that point I did it cold. I do it every 750-1000 miles or so, maybe 1000-1500 going forward. I use a remote starter to bump the engine. I use a regular wrench and a t-handle hex. I then use a Precision Instrument dual beam torque wrench to snug each lash nut properly, and verify again. Takes me an hour, all in. I'm sure a pro could do it in less than 10m but my method works for me and helps eliminate bonehead mistakes.

[Detroit Bill]

Originally Posted by lippy

Lash is no big deal. I had never done it before this car. I verified once hot at 0.025" and then checked cold, which was 0.014". From that point I did it cold. I do it every 750-1000 miles or so, maybe 1000-1500 going forward. I use a remote starter to bump the engine. I use a regular wrench and a t-handle hex. I then use a Precision Instrument dual beam torque wrench to snug each lash nut properly, and verify again. Takes me an hour, all in. I'm sure a pro could do it in less than 10m but my method works for me and helps eliminate bonehead mistakes.

I guess my questions would be 1.) what is the benefit over hydraulics? 2.) what is the benefit over hydraulic rollers? From what I am reading people are not taking these engines over 6500 rpm and the power peaks much lower that that.

Setting lash every 750-1000 miles in not no maintenance. Just saying.

[blykins]

Originally Posted by Detroit Bill

I guess my questions would be 1.) what is the benefit over hydraulics? 2.) what is the benefit over hydraulic rollers? From what I am reading people are not taking these engines over 6500 rpm and the power peaks much lower that that.

Setting lash every 750-1000 miles in not no maintenance. Just saying.

It's rpm dependent. A hydraulic cam is (in most cases) a 6000 rpm cam.

These cars require maintenance, plain and simple. Most guys buy them because they like to tinker. However, you'll prob only put 3000 miles on a car in a year, so a 1000 mile maintenance interval really isn't anything.

[Detroit Bill]

When you say hydraulic is 6000 rpm does that include hydraulic roller?

[blykins]

Originally Posted by Detroit Bill

When you say hydraulic is 6000 rpm does that include hydraulic roller?

Yes, FE hydraulic rollers are generally done by 6000-6200 unless some specialized parts are used.

As a side note on this build, I will be able to resume progress on it probably tomorrow. The crank is a Lemans crank with screw-in plugs and after I had it ground, I couldn't get the plugs to budge...had to have them burnt out. I couldn't take the chance of 50 years of sludge being trapped there, so the plugs had to come out...

[Dimis]

Originally Posted by blykins

The crank is a Lemans crank with screw-in plugs and after I had it ground, I couldn't get the plugs to budge...had to have them burnt out. I couldn't take the chance of 50 years of sludge being trapped there, so the plugs had to come out...

I heard a rumour that hot wax works...
Did you give that a go?
I was curious when I heard this rumour...

[blykins]

I've heard that too, but haven't tried. I just dropped the crank off at one of my buddy's shops and had him get them out.