Cylinder Head Sectioned

[sanddune51]

Sanddune, would you fill the potential eddy point just before the inlet valve guide?

Dandy, I think it's pretty insignificant in the scheme of things.It's a dead area of the port as far as flow is concerned and soon fills with carbon.There is a lot of good flow area around the valve and it's boss.Slight (1-2mm) shortening of the guide would be beneficial for flow as would narrowing of the guide. If you were intent on streamling the boss after the guide it would be no bad thing.If it could be reached to weld,that would be ok. I'm not so sure that it would be worth the effort though.

I hope these photos show the areas we're discussing





The Carpe boys wanted to see more angles so it's only fair to show them here too

[Mincehead]

any pics of the daughters ports?

I have the rights to those Stank but will give you the Pootube link for a cursory sum.

[dandywarhol]

Welcome back Mince - missed your dry wit!

[lenny]

What did you use to section the head ?. Great job.

[Tarwetijger]

What did you use to section the head ?. Great job.

I think it was a samurai sword. Hai... Chop!

[sanddune51]

What did you use to section the head ?. Great job.

Thanks I used a very big bandsaw,quite coarse toothed. Because the valve seats are so hard I had to take them out,or I'd ruin the blade . I thought the section would work much better,visually, with seats in so made some dummy replacements in much softer steel. I fitted those before I began cutting. Even with lots of coolant it was slow going,but worth the effort .


Mark.

[MotoMarkus]

Aren't those castings pretty smooth for a stock head?

Nice to see the innards of a head

[Mincehead]

No not at all, that is pretty much the quality of Japanese castings since the late 80`s at least.

[Bigblackyammy]

any pics of the daughters ports?

I am stumped as to why you would ask a question like this.

[Killerwhale]

any pics of the daughters ports?

I am stumped as to why you would ask a question like this.

He likes female ports?

[dandywarhol]

any pics of the daughters ports?

I am stumped as to why you would ask a question like this.

He likes female ports?

I think it might be a play on words - stumped????

[alextrx850]

The valve seats were too hard for the cutting blade,..interested to what the seats are made from..a stainless alloy ?
Or a carbon steel ?

Sorry Alex:

Edited by Mince because his works computer system won`t allow him to answer the post with another post ( F*&%)G poxy computers!)

A HIGH carbon steel will be the likely material.

[Stankflapper]

any pics of the daughters ports?

I am stumped as to why you would ask a question like this.

I go through raymond tce on my way to EastenCreek Raceway, I will drop in and you can feed me cold beer, then I will explain to you the virtues of female ports