Twins with Twins, Anyone?

[PureHybrid]

What about anodizing? Top fuel pistons are anodized all over

 

[2004LB7]

My understanding is it could be difficult to anodize cast aluminum, as Jon mentioned the high silicone content, doesn't anodize at all

Possiblity a great Idea if it could be done

 

[kidturbo]

For reference I found a couple pic of these pistons before and right after they were first installed.

Here is what Diamond has to say on hard anodizing.

http://blog.diamondracing.net/what-is-piston-hard-anodizing

 

[2004LB7]

Thats pretty good info right there. I did notice that it seems that they only do it to their forged pistons and not cast. I would fathom that if anyone knows it would be them

 

[PureHybrid]

Good info

 

[kidturbo]

This thread so far off topic now, we're going to have to change the title to none of the above...

Edit: maybe we call it all of the above... Lol

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[2004LB7]

Aren't we still talking about your pistons from this engine (s) build?

 

[kidturbo]

Yeah on twins with singles now though... we have covered quite the wide range of topics lately. Just joking

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[PureHybrid]

The thread of all knowledge

 

[NC-smokinlmm]

Just another typical boat build...:rofl::rofl::rofl:

Do you know why you keep doing it to yourself? BC I don't know why I do...

 

[kidturbo]

After I sold the little boat, I bought a big cat with full intentions doing this build. Then I realized I sure the hell couldn't afford it. So I sold that boat, a month later I get a call from some crazy dude in Australia, who says no one over here we'll attempt this build for me.. think I should have considered that statement a little harder.. lol

But in the infamous words of Jerry Reed I replied, we're gonna to do what they say can't be done...

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[TheBac]

Just another typical boat build...:rofl::rofl::rofl:

Do you know why you keep doing it to yourself? BC I don't know why I do...

There's your real thread title right there.

 

[Fingers]

I have had no luck anodizing the cast pistons. The coating is splotchy and uneven.

 

[kidturbo]

I brought second engine home Danville last night. Will pop the head off tomorrow and compare the innards.. Then I'll make the call on which way we go forward. Leaning hard towards cleaning polishing the piston tops, since there looks to be a few scuffs in cylinder walls that don't match up with ring gaps.

Also got see the latest stand along Bosch ECU and harness in action on Marks little Duramax yesterday. Nice piece of hardware for controlling big power. :woott:

 

[kidturbo]

Ok time for a little something new.

Broke out one the NLX turbos today to try and see how, and where I'm gonna mount these puppies. Gonna have to be tight to the Banks intake, and low as possible to clear some boat restrictions.

Also need to finalize the positive air shutoff placement. Just happen to have a new LS throttle body setting on the bench, which got me thinking. What if I modify one to fit between the turbo outlet and main intake. Maybe spring loaded with solenoid actuator design.

Comments?

 

[kidturbo]

My wife just handed me an old ceramic coated pan to cook in. And I said, think it's time to retire this for health reasons..

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[2004LB7]

How much of that ceramic coating do you think you flushed down the toilet and how much from cleaning it:roflmao:

 

[kidturbo]

Not sure, but now I know why the eggs kept getting crunchier..

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[kidturbo]

Almost ready to pull pistons on first engine. So decided to mark all scuffs on cyl walls to position on pistons. Then can inspect the rings and skirts for matching debris fields.

Another interesting find. Piston in Cyl 8 [second pic] shows least pitting, and least wall scuffing overall. However, where there is one wide scuff, it starts above the top ring.

Be interesting to see that once out, won't it...

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[Fingers]

Pistons are rocking in the bores.