william denish is writing an article about air flow in cylinder heads. he has been here at the shop having me try different things for him on this article. plans include to basline a stock cylinder head and then cnc machine different valve angles and valve to seat contact angles. the affect that they have on airflow. how port velocity is figured both mathematically and by using pitot tube to measure velocity. thanks sbc
When I was in Cinci for the dealer show they told me at the Newen booth that they were already working on that. Are you doing something different or was there a change in plans?
Can you direct me to a string on this board where they are discussing the groovies?
So far, mine are behaving like champs. Not surprised a bit. Thanks for turning me on to them.
Can you direct me to a string on this board where they are discussing the groovies?
So far, mine are behaving like champs. Not surprised a bit. Thanks for turning me on to them.
personally, I'm mentally having a hard time seeing the benefit of grooves versus say an angled squish with say a 2* or 3* taper. All the grooves are doing is allowing space for the gas / air to be directed to the chamber. right? or am I missing something here.
personally, I'm mentally having a hard time seeing the benefit of grooves versus say an angled squish with say a 2* or 3* taper. All the grooves are doing is allowing space for the gas / air to be directed to the chamber. right? or am I missing something here.
All the grooves are doing is allowing space for the gas / air to be directed to the c
The results often are quite rewarding.
"All they are doing" seems to be a lot. Leaner afr with less required timing is making my 206ccp chambers run like a lower compression bike. No hard starts or ping. (No releases).
care to share how you do the machine work? calculators show i will be at over 220 ccp if i ever get time to put it back together. no prob experimenting with the grooves for ya. also have a set of 615/585 cams i could report on----given time.
care to share how you do the machine work? calculators show i will be at over 220 ccp if i ever get time to put it back together. no prob experimenting with the grooves for ya. also have a set of 615/585 cams i could report on----given time.
If you want you can send me the heads & I'll groove them for free. Just pay for the shipping. I'd like to see more guys try this from different parts of the country where the gas might not be so good.
If you want you can send me the heads & I'll groove them for free. Just pay for the shipping. I'd like to see more guys try this from different parts of the country where the gas might not be so good.
our gas is good, but temps and humidity are killer. also at or near sea level, beaches are about 60-70 miles south..i will pm ya monday for shipping info.
william denish is writing an article about air flow in cylinder heads. he has been here at the shop having me try different things for him on this article. plans include to basline a stock cylinder head and then cnc machine different valve angles and valve to seat contact angles. the affect that they have on airflow. how port velocity is figured both mathematically and by using pitot tube to measure velocity. thanks sbc
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