Engine heads: Low deck height vs lower bowl volume? Material?

[jaxracer]

Hey guys,

Diving more into head design, shape, etc. but was looking for input on characteristics seen from an engine with too large of bowl volume with low head clearance vs the characteristics of an engine which has the correct bowl volume but running too high of head clearance? What would that engine sound like/how would it affect the plug on rich vs lean runs? What are the trade-offs from the aforementioned combos, HP, RPM, etc? This is in relation to a .21 engine running 60-65% nitro.

Also I've heard a lot about guys using brass as head button material. What would be noticed by switching to a head button made out of brass in the exact same dimensions as a stock head button (same bowl, head clearance, etc) vs the stock aluminum that most engine manufacturers use?

Thanks in advance!

 

[LohringMiller]

See my article below.

Lohring Miller

 

[Davidkrienke]

See my article below.

Lohring Miller

I would like to see the whole article is this available? This is really interesting.

 

[John Beardslee]

See my article below.

Lohring Miller

Lohring, I can’t get the article to open. Is there a way on your end to help us DINOSAURs?????
Thanks John

 

[dr gary turner]

See my article below.

Lohring Miller

Your attachment will not open in a PDF FILE

 

[Mike Hughes]

I have no issues opening the file. It downloads to a tab then you need to open it from there.
Mike

 

[John Beardslee]

I have no issues opening the file. It downloads to a tab then you need to open it from there.
Mike

Thanks Mike, I was on my phone and didn’t see the tab, found it and it opens fine.
John

 

[LohringMiller]

The series is on the NAMBA web site.
namba.com/content/library/propwash/2018/october/14/

namba.com/content/library/propwash/2019/april/24/

namba.com/content/library/propwash/2019/october/4

namba.com/content/library/propwash/2020/april/4/

namba.com/content/library/propwash/2020/October/4/

namba.com/content/library/propwash/2021/march/16/

Lohring Miller

 

[Alan Elzer]

The series is on the NAMBA web site.
namba.com/content/library/propwash/2018/october/14/

namba.com/content/library/propwash/2019/april/24/

namba.com/content/library/propwash/2019/october/4

namba.com/content/library/propwash/2020/april/4/

namba.com/content/library/propwash/2020/October/4/

namba.com/content/library/propwash/2021/march/16/

Lohring Miller

 

[Alan Elzer]

Can a non namba person access these articles on namba site ?

 

[DON MAHER]

As far as I know,yes you can.

 

[Brian Sorgente]

Can a non namba person access these articles on namba site ?

Yep, they are all there. Lots of good stuff too.

Brian