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Removing Decompression Assembly

dongskie20

New Member
@bro haen
in my bike bro, the pin and the inner mechanism were removed by our mechanic coz theres no longer pin that hold that thing so theres might be possibelities that have i ticking sound,, his just grinded the part that holds to the cam gear.
 

kurarensu

Veteran
when i travelling on constant speed, i feel my bike has a sound.. i dont know how to explain.. but the sound come from the engine.. and the sound is very constant.. is like something rotating/moving kind.. issit caused by the decomp assy?
 

dongskie20

New Member
@kurarensu
try to remove the inner mechanism bro as what sir Haen said.. my bike has no sound as of now after installing the special tuned vixion kit from Haen.
 

Snippy

New Member
bro haen wat is that inner mechanism that u mention to be
remove in order to ease the tic-tic sound in the engine once u
remove the decompressor pin???
can u pls provide some piture of that thing ....tnx

becoz mine i only removed the pin and yes
it has a little bit tic-tic sound that makes me
nervous in the condition of my bike... :(
 

softice

New Member
iam still blur for this topic?is that good or bad for removing the decompression assembly?if that good its for??or bad for?? ..like mine i use 61mm block with 22/19 valve and high camshaft.. is that good to remove it for btter top speed at gear 4 or if we remove it gear 4 will drop??
thx all pro.. i need this reply ..peace
 

R135LC

New Member
Excellent Trax! 3 pictures say a thousand words.

Pardon my ignorance and lack of familiarity with this engine,
would have been a great help to me (and to some others)
if you could have shown us the steps you went through from when you

1) took the cam cover off (?),
2) alignment of camshaft to crankshaft with piston at top dead centre(?),
3) removal of decompression assy from camshaft/timing chain(?),
4) followed by the steps in your photos,
5) reinstall decompression plate onto camshaft n timing chain,
6) checking of cam alignment with crankshaft as the final.

like a 'Complete Idiots Guide to Decompression Pin Removal'.

For the inexperienced, it could be daunting.
One sprocket out of sync, the motor may not start.
I suppose pushing the bike to the local mechanic whose got a smile
on his face may help fix the problem! :)

I'll understand if it cannot be done this time. :wink:
 

john-locke

Veteran
what is your low Rpm when the motor start and warm ?

for me it is 1850 , because my ECU control this .
you said 1500-2000 . with a little gaz i have 4000 tr/mn .

Only difficult to start .
 

traxxas-modifier

Super LOLO
Staff member
the steps can be followed using the service manual which can download.

no problem with rpm buck.
difficult to start since decompression pin is removed.
the purpse of decomp pin is to have easy start
 

chiglai

Super Veteran
buck-roggers67 said:
do you have really more power ?
well to be honest with you i was forced to do it.. because of the CAM! to answer your question sir..

YES more power from the cam, not from removing it...
 

hass

New Member
chiglai said:
buck-roggers67 said:
do you have really more power ?
well to be honest with you i was forced to do it.. because of the CAM! to answer your question sir..

YES more power from the cam, not from removing it...
You will says because your camshaft was not drilled ?

You can drill them :

On the left one oem camshaft on the right side 4xstage 2 camshaft drilled

.


 
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