I called JE and they said the new piston COULD NOT be used as a replacement for an old one, without replacing all 4. He claimed the new part number is "about 30 grams lighter" than the old one, even though that website shows it as 1 gram heavier. They still have the old number on their website.
Question 1) Is Howell's domed piston a misprint/typo?
Question 2) Can I use 1 new one with my 3 good old ones?
#64853, "RE: NEW JE piston part number + Howell domed" In response to Reply # 0
Originally posted by thedawg Question 1) Is Howell's domed piston a misprint/typo?
To my knowledge, convex or concave shaped piston heads, otherwise known as vortex (?) create a swirling motion of the air/fuel mixture as they move, thus creating a better mix. Supposedly when they came out with this discovery and took it to the track, they had to make a separate class for the cars with the vortex pistons because it made such a difference. Hope this helps....I myself have been looking for some for awhile.
#64863, "RE: NEW JE piston part number + Howell domed" In response to Reply # 3
generally speaking for our cars
dished are turbo (have to remove material to provide more room for air and fuel)
domed and generally hi compression 10.5:1 + usually 12.5:1
You can have it cheap, fast or good. Pick any two.
If you want it cheap and fast, it's not going to be good. If you want it cheap and good, it's not going to be fast. If you want it good and fast, it's not going to be cheap.
#64936, "RE: NEW JE piston part number + Howell domed" In response to Reply # 3
Originally posted by weepulTo my knowledge, convex or concave shaped piston heads, otherwise known as vortex (?) create a swirling motion of the air/fuel mixture as they move, thus creating a better mix. Supposedly when they came out with this discovery and took it to the track, they had to make a separate class for the cars with the vortex pistons because it made such a difference.
#64964, "RE: NEW JE piston part number + Howell domed" In response to Reply # 6
haha, I didn't make that shit up! =) Was what they told us in the army when I was training to be a mechanic. Not sure what the piston is called exactly, but it would force the air/fuel into a vortex (swirl) in the cylinder and mix it better.
#64966, "RE: NEW JE piston part number + Howell domed" In response to Reply # 7
Originally posted by weepul Was what they told us in the army when I was training to be a mechanic.
That was your first freakin mistake right there....beleiving anything the army tells you!!!!! they once gave me 60lbs and told me to walk a few miles down hill. it turned out to be 90lbs and 15 miles mostly up hill....
USED TO HAVE...Everything you wish you had, and then some...
You are somebody special Tim, you matter! - from the admins (but nobody likes you, because your username is just like that other guy's, and you whine a lot)
#65068, "RE: NEW JE piston part number + Howell domed" In response to Reply # 8
owned by the army ^^
You can have it cheap, fast or good. Pick any two.
If you want it cheap and fast, it's not going to be good. If you want it cheap and good, it's not going to be fast. If you want it good and fast, it's not going to be cheap.
Search
Printer-friendly copy
1 User in Chat
