4AG BT with CP High comp piston.. compression 10?

[meg_omen]

i think the mech worry about the piston/valve clearance...
you need to check it if you use aftermarket high comp piston...
my mech normally do something to CP piston valve pocket...:hmmmm:

 

[mafia_staff]

Problem identified... need to skim head and block.. thanks guys.. Mechanic admit his fault.. moral of the story- whatever you want to do, make sure you have knowledge or 'concept' what you should do.. adios

 

[beyond]

Too thick right?

 

[mADmAN]

Problem identified... need to skim head and block.. thanks guys.. Mechanic admit his fault.. moral of the story- whatever you want to do, make sure you have knowledge or 'concept' what you should do.. adios

skim head n block???? if ur doing this bcoz ur head gasket is too thick...then u should definitely change gasket instead of skim... that is an irreversible mod...remember that

 

[D7zul]

usually people skim head bcoz of uneven surface

to get more compression ?

gudluck

 

[Jac83]

usually people skim head bcoz of uneven surface

to get more compression ?

gudluck

Yea agree partially, skimming head and/block's purposes are to prevent loss of compression due to uneven surface on either or both the head and block aka to attain the optimum compression ratio. But I don't think u can get more compression from skimming either/both the head and block. Do correct me if I'm wrong.

 

[mafia_staff]

I have clearance between TDC and top level of head about 3mm, I don't know how this happen... and do you know what is the purpose metal head gasket? from my two cents knowledge metal head gasket is a variable to adjust the compression.. so I shave head and block and counter it with metal head gasket.. do correct me if I'm wrong..

 

[bera]

ermm...if the block and head not warped no point skimming it...i'd try thinner gasket first...like madman said earlier once skimmed there no turning back...if something happens along the way...you'll be looking for a new block and/or head...

 

[meg_omen]

how much to skimmed?
wierd coz 3mm clearance is too much coz you're using CP piston...

if i can remember; only skim max 0.5mm if using 0.8mm TRD gasket...
this is with Toyota 0.5mm oversize piston...
if more than 'engine tak sedap'...:hmmmm:

 

[1JZtezza]

how much to skimmed?
wierd coz 3mm clearance is too much coz you're using CP piston...

if i can remember; only skim max 0.5mm if using 8.0mm TRD gasket...
this is with Toyota 0.5mm oversize piston...
if more than 'engine tak sedap'...:hmmmm:

its been many years but 8 mm gasket??

Devil in the details...but are the CP pistons supposed to be paired with their rods.. check the pin location first..just my 2 cents mate...no experience with CP stuff or 3S engine!

---------- Post added at 11:56 AM ---------- 6 hour anti-bump limit - Previous post was at 11:25 AM ----------

Attached CP catalog

http://www.cp-carrillo.com/LinkClick.aspx?fileticket=yrZ5T5U6dHU%3d&tabid=82

 

[^pomen_GTR^]

I have clearance between TDC and top level of head about 3mm, I don't know how this happen... and do you know what is the purpose metal head gasket? from my two cents knowledge metal head gasket is a variable to adjust the compression.. so I shave head and block and counter it with metal head gasket.. do correct me if I'm wrong..

errr..have you check the piston deck height/wrist pin height comparing them to original piston?

 

[meg_omen]

8.0mm...
huh! typo error la bros... old already...

 

[spoon civic]

correct compression?

i think its 2 different things, compression ratio and static compression...
sigh... need to learn more...

yes bro..maybe compression ratio...static compression different.....

 

[cuscostrutbrace]

yes bro..maybe compression ratio...static compression different.....

Compression ratio and static compression is same thing..

---------- Post added at 09:17 AM ---------- 6 hour anti-bump limit - Previous post was at 09:08 AM ----------

yes bro..maybe compression ratio...static compression different.....

Compression ratio and static compression is same thing..

 

[chinozie]

Soo what's the current update ?

mafia_staff ...are you to increased the dynamic compression...my old engine with 0.5mm oversize piston, I've manage to get a value of 14... :D