How to: SQUISHBAND your engine
- Thread starter traxxas-modifier
- Start date
LoL.. it's kinda like Republican and Democrat party here.. let's vote then..hahahahah... peace :mrgreen:
i dunno maybe different experience.. IMHO mirror finish gave me fuel spots due to smooth finish gives less turbulence.. smooth is good but i prefer textured to promote swirl and turbulence.. to test this.. get into ur car.. bring a mirror and a smoothly textured surface.. let it out of the window for a while (have ur friend to do this and on less dense road).. drive about 30-50 kph while its a bit raining.. see which gets most wet... textured surface breaks the water droplets to smaller droplets.. while mirror just splashes.. as for fuel injection i think it doesnt require much texture coz the fuel already atomized and "injected" instead of "sucked" by piston movement..
To prove my point.. hi end carbs like TM28-1 has an "atomizer" with rough surface to promote better fuel atomization.. take a look at that yellowish thing on the spigot of the carb..
Here's the link courtesy of our friend vnduck.. The TM28-1..
http://www.yamahat135.com/forum/viewtopic.php?t=932
CMIIW
i dunno maybe different experience.. IMHO mirror finish gave me fuel spots due to smooth finish gives less turbulence.. smooth is good but i prefer textured to promote swirl and turbulence.. to test this.. get into ur car.. bring a mirror and a smoothly textured surface.. let it out of the window for a while (have ur friend to do this and on less dense road).. drive about 30-50 kph while its a bit raining.. see which gets most wet... textured surface breaks the water droplets to smaller droplets.. while mirror just splashes.. as for fuel injection i think it doesnt require much texture coz the fuel already atomized and "injected" instead of "sucked" by piston movement..
To prove my point.. hi end carbs like TM28-1 has an "atomizer" with rough surface to promote better fuel atomization.. take a look at that yellowish thing on the spigot of the carb..
Here's the link courtesy of our friend vnduck.. The TM28-1..
http://www.yamahat135.com/forum/viewtopic.php?t=932
CMIIW
what do you mean sound hard?
Haen - Agreed on the smooth port part.
But please note that on F1 engines, since they have a completely downdraft port they run a plastic inset through the ports to make the surface as smooth as possible.
however on sidedraft ports like the Vixion/T135, a textured port makes sense. So the texturing or smoothening part is based on the type of port as well.
But please note that on F1 engines, since they have a completely downdraft port they run a plastic inset through the ports to make the surface as smooth as possible.
however on sidedraft ports like the Vixion/T135, a textured port makes sense. So the texturing or smoothening part is based on the type of port as well.
knocking sound on idle?justkir said:
if you increase rev, the knocking sound gone?
compression happens only on the top gasket.Azzurri said:
lower gasket dont have compression as its only sealer.
its safe to remove the bottom gasket.
if tik tik sound on idle but the sound is gone on rpm increasedphl6684 said:
that sound is timing chain bro...
(see service manual)
what you need to do is adjust the timing chain tensioner
1. TURN the chain tensioner full compression (CLOCKWISE) using small flat short screw driver
2. once fully compressed, release it.
3. run your engine and see if it still have sound.
4. it still has sound, adjust it (counter clockwise)
very very small turn at a time only until sound is gone.
i have done my port n shaved my block, my timing chain i set just like an ori setting ang once i start it sound like a knocking valve anyone can tell me how to set my timing chain marking and after i did my mod white smoke comes out from my exhaust..... tell me how to solve it
white smoke most likely color of oil burning...?
did you remove and clean the piston RINGs ?
its might be piston rings were not properly installed...
improper installation of rings like inverted installation
wont scrape off oil thus rings were not working its designed for...
most reason why smoke appears after the installation of piston ring
is not correct installation of ring.
Wrong orders or installed inverted
did you remove and clean the piston RINGs ?
its might be piston rings were not properly installed...
improper installation of rings like inverted installation
wont scrape off oil thus rings were not working its designed for...
most reason why smoke appears after the installation of piston ring
is not correct installation of ring.
Wrong orders or installed inverted
Formula confuse...
V = ¶ x r² x H
V = Volume (Cylindrical)
¶ = phi (3.1415926535897932384626433832795)
r = radius of the cylinder
H = height of the cylinder
Conversion Unit: 1cc = 1cm³ = 1.000mm³
So i thought the formula to calculate a cylindrical volume from mm unit to cc in volume unit should become (correct me if i'm wrong):
V = ¶ x r² x H / 1.000
My question is based on what conversion unit / maybe some trick formula calculation, u got the divider 4000 (V= phi x D^2 x H / 4000) from? is it because of the dome shaped from the Head? please enlighten me...
Sorry for the stupid question from a newbie here
Sorry, I'm a little bit confuse here... I thought the formula to calculate a cylindrical Volume was:haen said:
V = ¶ x r² x H
V = Volume (Cylindrical)
¶ = phi (3.1415926535897932384626433832795)
r = radius of the cylinder
H = height of the cylinder
Conversion Unit: 1cc = 1cm³ = 1.000mm³
So i thought the formula to calculate a cylindrical volume from mm unit to cc in volume unit should become (correct me if i'm wrong):
V = ¶ x r² x H / 1.000
My question is based on what conversion unit / maybe some trick formula calculation, u got the divider 4000 (V= phi x D^2 x H / 4000) from? is it because of the dome shaped from the Head? please enlighten me...
Sorry for the stupid question from a newbie here
@dms5 : yeah thanks for reminding.. that's if u use the standard V=phi x (r)^2 x H / 1000 but.. if u want to use diameter.. its V= phi x (1/2D) ^ 2 x H / 1000 divided by 4000 if u don't divide the D first by 2... remember (1/2) ^ 2 * 1/1000... it's a basic math bro..
Example :
for vixion block :
Diameter formula
V= 3,1416 x (57 mm) ^ 2 x 58,7 mm = 599154,32808 / 4000 = 149,78858202 cc
Radius formula
r = 1/2 D = 1/2 x 57 mm = 28,5 mm
so..
V=3,1416 x (28,5 mm) ^ 2 x 58,7 mm = 149788,58202 / 1000 = 149,78858202 cc
tell me.. isn't it the same result ?
Example :
for vixion block :
Diameter formula
V= 3,1416 x (57 mm) ^ 2 x 58,7 mm = 599154,32808 / 4000 = 149,78858202 cc
Radius formula
r = 1/2 D = 1/2 x 57 mm = 28,5 mm
so..
V=3,1416 x (28,5 mm) ^ 2 x 58,7 mm = 149788,58202 / 1000 = 149,78858202 cc
tell me.. isn't it the same result ?