Installing Cams/Bleeding Lifters?

EVO7mc · 05-09-2009, 15:46

Do you have to bleed the lifters when fitting cams? Watched this video and it would seem not http://videos.streetfire.net/video/H...-on_138721.htm But i've also read that you MUST bleed the lifters can anyone confirm?

starkers · 05-09-2009, 15:59

No need to mate, just change the cams over

grayw · 05-09-2009, 16:07

Release the pressure by depressing the check valve inside, as they will expand when the cams are removed.

leecavturbo · 05-09-2009, 16:42

also need another remap

EVO7mc · 05-09-2009, 17:11

Quote:

Originally Posted by grayw

Release the pressure by depressing the check valve inside, as they will expand when the cams are removed.

Do i need to pump them dry or just release the pressure? Is there a special tool needed or will something like a small allen key or drill bit work?

jamie@evotune · 05-09-2009, 17:13

Quote:

Originally Posted by EVO7mc

Do i need to pump them dry or just release the pressure? Is there a special tool needed or will something like a small allen key or drill bit work?

It is best to pump them in diesel as that cleans them out a welding rod is ideal to use to unseat the check valve you could also use a small allen key if you wish

leecavturbo · 05-09-2009, 18:00

mike why didn't you fit the cams before mapping?

EVO7mc · 05-09-2009, 18:58

I was offered them after the mapping day at R-Spec, My car had a faulty sensor so I had to go back at some point to get the map finished.I spoke to grayw about the cams before I bought them and he was ok about mapping them in for me when i go to see him

leecavturbo · 05-09-2009, 20:39

cool

EVO7mc · 06-09-2009, 18:13

Just out of intrest what is the reason behind bleeding the lifters? Some people do it and others dont.

grayw · 06-09-2009, 19:53

They can clog up, so if you have them removed it worth giving them a clean. When the cam is removed the lifter extends to fully open, so getting it back to gether is much easier if you release them.

EVO7mc · 06-09-2009, 20:24

I read that you can somehow end up with bent valves if you dont bleed the lifters

http://forums.evolutionm.net/evo-eng...d-first-5.html (5th post down) Is there any truth in that??

jamie@evotune · 07-09-2009, 06:15

Quote:

Originally Posted by EVO7mc

I read that you can somehow end up with bent valves if you dont bleed the lifters

http://forums.evolutionm.net/evo-eng...d-first-5.html (5th post down) Is there any truth in that??

Yes they can bend the valves if not bled especially if you are running tight piston to valve clearance

05-09-2009, 15:46	#1
EVO7mc Registered User Join Date: Jan 2006 Location: Midlands Car: Black evo 8 Posts: 464	Installing Cams/Bleeding Lifters? Do you have to bleed the lifters when fitting cams? Watched this video and it would seem not http://videos.streetfire.net/video/H...-on_138721.htm But i've also read that you MUST bleed the lifters can anyone confirm?

05-09-2009, 15:59	#2
starkers Has completed the rebuild Join Date: Aug 2007 Location: Live in Cambridgeshire but originally from West Yorks.... Car: 2L Forged, GT30, Self Mapped Apexi D-jet Posts: 2,833	No need to mate, just change the cams over __________________ Engine built and maintained by Mark@Wraith Evolutions Insured with Pace Ward: 01782 286311

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05-09-2009, 16:07	#3
grayw Geekmapped.com Join Date: Aug 2005 Location: Hampshire Car: Evo Posts: 18,335	Release the pressure by depressing the check valve inside, as they will expand when the cams are removed.

05-09-2009, 16:42	#4
leecavturbo Senior User Join Date: Dec 2004 Location: Tamworth Car: Evo8 gsr Posts: 6,523	also need another remap

05-09-2009, 18:00	#7
leecavturbo Senior User Join Date: Dec 2004 Location: Tamworth Car: Evo8 gsr Posts: 6,523	mike why didn't you fit the cams before mapping?

05-09-2009, 18:58	#8
EVO7mc Registered User Join Date: Jan 2006 Location: Midlands Car: Black evo 8 Posts: 464	I was offered them after the mapping day at R-Spec, My car had a faulty sensor so I had to go back at some point to get the map finished.I spoke to grayw about the cams before I bought them and he was ok about mapping them in for me when i go to see him

05-09-2009, 20:39	#9
leecavturbo Senior User Join Date: Dec 2004 Location: Tamworth Car: Evo8 gsr Posts: 6,523	cool

06-09-2009, 18:13	#10
EVO7mc Registered User Join Date: Jan 2006 Location: Midlands Car: Black evo 8 Posts: 464	Just out of intrest what is the reason behind bleeding the lifters? Some people do it and others dont.

06-09-2009, 19:53	#11
grayw Geekmapped.com Join Date: Aug 2005 Location: Hampshire Car: Evo Posts: 18,335	They can clog up, so if you have them removed it worth giving them a clean. When the cam is removed the lifter extends to fully open, so getting it back to gether is much easier if you release them.

06-09-2009, 20:24	#12
EVO7mc Registered User Join Date: Jan 2006 Location: Midlands Car: Black evo 8 Posts: 464	I read that you can somehow end up with bent valves if you dont bleed the lifters http://forums.evolutionm.net/evo-eng...d-first-5.html (5th post down) Is there any truth in that??